Types of fractures in fmt

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types of fractures forensic medicine toxicology FMT classification medicolegal

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Types of Fractures in Forensic Medicine & Toxicology (FMT)

Fractures in FMT are discussed under two main headings: (A) General types of bone fractures and (B) Types of skull fractures (the most tested topic in FMT exams).

A. General Classification of Bone Fractures

Based on forces acting on bone (tension, compression, torsion, flexion, shearing):
Types of bone fractures - Greenstick, Transverse, Comminuted, Spiral, Compound
(Fig. 8.54: Types of bone fractures - The Essentials of Forensic Medicine and Toxicology)
TypeDescription
GreenstickIncomplete fracture; bone bends and cracks on one side only. Common in children with pliable bones.
TransverseFracture line runs perpendicular to the bone axis. Caused by direct force.
ObliqueFracture line runs at an angle across the bone.
SpiralFracture line spirals around the bone shaft. Classic for torsion/twisting injuries. Medicolegally important in child abuse.
ComminutedBone breaks into three or more fragments. Caused by significant force.
Compound (Open)Bone fragments pierce the skin, creating external wound and infection risk.
Simple (Closed)Overlying skin is intact.
ImpactedOne fragment is driven into another.
AvulsionFragment pulled off by forceful muscle/ligament contraction.
Stress/FatigueResults from repeated low-force loading (e.g., march fracture of the metatarsal).
PathologicalOccurs through diseased bone (e.g., metastasis, osteoporosis) with minimal force.
Based on timing (medicolegal importance):
  • Antemortem - shows evidence of bone repair (callus, periosteal reaction after 10-14 days)
  • Perimortem - fracture around time of death; edges appear wet/green, no healing
  • Postmortem - edges appear dry, irregular, typically jagged; no bleeding

B. Types of Skull Fractures (Most Important in FMT)

Types of skull fractures - Diastatic, Depressed, Linear, Basilar
(Fig. 8.55: Types of skull fractures - The Essentials of Forensic Medicine and Toxicology)

Fractures of the Cranial Vault

I. Linear (Fissured) Fracture
  • Most common skull fracture (~70% of all skull fractures)
  • Straight or curved fracture lines of considerable length
  • May involve one or both tables of the skull
  • Common in weak, unsupported areas: temporal, frontal, parietal, and occipital bones
  • Caused by forcible contact with a broad surface (ground), or fall on feet/buttocks
  • Also called "motorcyclist's fracture"
  • The fracture line may extend to the base of skull or across supraorbital ridges
II. Diastatic (Sutural) Fracture
  • Linear fracture that passes into a suture line and causes separation (diastasis) of bones at the suture
  • Most commonly involves the sagittal suture; the metopic suture may reopen
  • Common in young children
  • Medicolegally important as a marker of child abuse syndrome
III. Depressed Fracture ("Fracture a la signature" / Signature Fracture)
  • Produced by an object with relatively large kinetic energy but small surface area (stone, hammer, axe, etc.)
  • Fractured bone is driven inward into the skull cavity
  • Outer table driven into the diploe; inner table fractured irregularly and more extensively
  • Shape often resembles the weapon that caused it - hence "signature fracture"
    • Hammer blow = circular fracture arc
    • Firearm butt (full face) = rectangular fracture
    • Stone = irregular/triangular fracture
  • Antemortem depressed fractures in homicide show shelving inward of the outer table along fracture edges
  • Deepest part of depression = where weapon first struck; may show "terracing" at margins
IV. Elevated Fracture
  • One end of a fractured fragment is elevated above the skull surface, the other end is depressed into the cranial cavity
  • Caused by a blow from a heavy sharp weapon that elevates the fragment due to lateral pull while retrieving the weapon
V. Comminuted Fracture
  • Two or more intersecting lines divide the skull into three or more fragments
  • Caused by significant force over a broad area: crushing head injuries, vehicle accidents, fall from height, repeated blows with heavy instruments (iron bar, poker, axe, thick stick)
  • When there is no displacement, it resembles a spider's web or mosaic pattern
  • A complication of fissured or depressed fracture
VI. Pond (Indented) Fracture
  • Shallow depressed fracture forming a concave "pond"
  • Most common in pliable bones of infants
  • Depression can occur without a fracture line - analogous to squeezing a table tennis ball
  • Caused by obstetric forceps blade or birth trauma
VII. Mosaic (Spider Web) Fracture
  • A comminuted depressed fracture with multiple fissures radiating from it, forming a spider web or mosaic pattern
  • Results when severe local impact causes both focal and general deformation of the skull
VIII. Gutter Fracture
  • A groove-like or trough-shaped fracture, caused by a tangential or grazing blow from a bullet
  • The bullet does not penetrate the skull but creates a furrow along the outer table
IX. Diastatic Fracture (see above under sutural fracture)
X. Blow-out Fracture
  • Fracture of the orbital floor/wall due to blunt trauma to the eye, causing increased intraorbital pressure
XI. Perforating Fracture
  • A small circular hole punched through the skull, classically from a firearm projectile (entry wound)
  • Entry: small, clean, punched-out; Exit: larger, beveled outward

Fractures of the Skull Base

TypeKey Features
Ring FractureEncircles the foramen magnum; caused by fall from height onto feet - kinetic energy transmitted up spine, raming into occipital bone
Hinge FractureTransverse fracture across the base, dividing skull into front and back halves; caused by lateral compression (crushing between two objects)
Anterior Cranial FossaFractures through orbital plates; signs - bilateral periorbital ecchymosis ("raccoon eyes"), CSF rhinorrhea
Middle Cranial FossaFracture through temporal bone; signs - Battle's sign (mastoid ecchymosis), CSF otorrhea, hemotympanum
Posterior Cranial FossaFractures extend toward foramen magnum; blows to occipital region

C. Medicolegal Importance of Fractures

  1. Signature fractures (depressed) can identify the weapon/agent used
  2. Spiral fractures in children raise suspicion of non-accidental injury / child abuse
  3. Ring fractures indicate fall from height
  4. Diastatic fractures are common in child abuse syndrome
  5. Timing (ante-, peri-, postmortem) determines whether death occurred at scene or elsewhere
  6. Force estimation: A simple fissured fracture requires ~5 foot-pounds; falling from erect posture generates ~60 ft/lb

Sources: The Essentials of Forensic Medicine and Toxicology, 36th Ed. (2026); P.C. Dikshit Textbook of Forensic Medicine and Toxicology; Forensic Anthropology: A Comprehensive Introduction, 2nd Ed.

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mkdir -p /home/daytona/workspace/fmt-fractures && cd /home/daytona/workspace/fmt…

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~/fmt-fractures/generate_pdf.py

from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.units import cm, mm
from reportlab.lib import colors
from reportlab.platypus import (
    SimpleDocTemplate, Paragraph, Spacer, Image, Table, TableStyle,
    HRFlowable, PageBreak, KeepTogether
)
from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_JUSTIFY
from reportlab.platypus import Flowable
import os

OUTPUT = "/home/daytona/workspace/fmt-fractures/Types_of_Fractures_FMT.pdf"
IMG_BONE = "/home/daytona/workspace/fmt-fractures/bone_fractures.png"
IMG_SKULL = "/home/daytona/workspace/fmt-fractures/skull_fractures.png"

doc = SimpleDocTemplate(
    OUTPUT,
    pagesize=A4,
    rightMargin=2*cm,
    leftMargin=2*cm,
    topMargin=2.5*cm,
    bottomMargin=2*cm,
    title="Types of Fractures in Forensic Medicine & Toxicology",
    author="Orris Medical",
)

W, H = A4
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styles = getSampleStyleSheet()

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def b(text):
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def bullet(text):
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story = []

# ── TITLE PAGE ──────────────────────────────────────────────────────────────
story.append(Spacer(1, 1.5*cm))
story.append(Paragraph("Types of Fractures", title_style))
story.append(Paragraph("Forensic Medicine &amp; Toxicology (FMT)", title_style))
story.append(Spacer(1, 0.3*cm))
story.append(HRFlowable(width="80%", thickness=2, color=colors.HexColor("#2e5090"), hAlign="CENTER"))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    "Based on P.C. Dikshit Textbook of Forensic Medicine and Toxicology &amp; "
    "The Essentials of Forensic Medicine and Toxicology, 36th Ed. (2026)",
    subtitle_style
))
story.append(Spacer(1, 0.8*cm))

# ── INTRO ─────────────────────────────────────────────────────────────────
story.append(Paragraph(
    "Fractures are among the most important topics in Forensic Medicine & Toxicology, "
    "covering both general bone fractures and skull fractures. The mechanism, pattern, "
    "and timing of a fracture carry significant medicolegal implications including identification "
    "of the weapon, cause of death, and whether the injury was antemortem, perimortem, or postmortem.",
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))
story.append(Spacer(1, 0.3*cm))

# ── SECTION A: GENERAL ────────────────────────────────────────────────────
story.append(heading_block("A. GENERAL CLASSIFICATION OF BONE FRACTURES"))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    "Fracture is classified based on five major forces that act on bone: "
    "<b>tension (stretching), compression, torsion (twisting), flexion (bending), and shearing</b>. "
    "A combination of these forces causes most injuries.",
    body_style
))
story.append(Spacer(1, 0.3*cm))

# Bone fractures image
img_bone = Image(IMG_BONE, width=CW * 0.85, height=CW * 0.85 * (559/1181))
img_bone.hAlign = "CENTER"
story.append(img_bone)
story.append(Paragraph("Fig. 1: Types of bone fractures (Greenstick, Transverse, Comminuted, Spiral, Compound)", caption_style))
story.append(Spacer(1, 0.3*cm))

# General fracture table
gen_data = [
    [b("Type"), b("Description"), b("Medicolegal Note")],
    ["Greenstick", "Incomplete fracture; bone bends and cracks on one side only.", "Common in children; pliable bones."],
    ["Transverse", "Fracture line perpendicular to bone axis.", "Caused by direct force."],
    ["Oblique", "Fracture line runs at an angle across the bone.", "Angulated force mechanism."],
    ["Spiral", "Fracture spirals around the bone shaft.", "Torsion/twisting injury. Key sign of child abuse."],
    ["Comminuted", "Bone broken into 3+ fragments.", "Significant force; vehicle accidents, falls."],
    ["Compound (Open)", "Bone fragments pierce the skin.", "Risk of infection; external wound present."],
    ["Simple (Closed)", "Overlying skin intact.", "No external wound."],
    ["Impacted", "One fragment driven into another.", "Seen in falls from height."],
    ["Avulsion", "Fragment pulled off by muscle/ligament force.", "Sports injuries; tendon attachment sites."],
    ["Stress/Fatigue", "Repeated low-force loading.", "March fracture (2nd metatarsal)."],
    ["Pathological", "Through diseased bone with minimal force.", "Metastasis, osteoporosis, TB of bone."],
    ["Greenstick (Pond)", "Concave dent in infant skull; no fracture line.", "Obstetric forceps; birth trauma."],
]
gen_col_widths = [CW*0.22, CW*0.44, CW*0.34]
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    ("VALIGN", (0,0), (-1,-1), "TOP"),
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story.append(gen_table)
story.append(Spacer(1, 0.4*cm))

# Timing table
story.append(Paragraph(b("Timing Classification (Medicolegal Importance):"), h3_style))
timing_data = [
    [b("Timing"), b("Features")],
    ["Antemortem", "Evidence of bone repair: callus, periosteal reaction (visible after 10-14 days). Hemorrhage in soft tissue."],
    ["Perimortem", "Fracture around time of death. Edges appear wet/green, bone bends before breaking. No healing response."],
    ["Postmortem", "Edges appear dry, irregular, jagged. No bleeding. Often incomplete fracture lines."],
]
timing_col_widths = [CW*0.22, CW*0.78]
timing_table = Table(timing_data, colWidths=timing_col_widths, repeatRows=1)
timing_table.setStyle(TableStyle([
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    ("BOTTOMPADDING", (0,0), (-1,-1), 4),
    ("LEFTPADDING", (0,0), (-1,-1), 5),
    ("RIGHTPADDING", (0,0), (-1,-1), 5),
]))
story.append(timing_table)
story.append(Spacer(1, 0.2*cm))

story.append(PageBreak())

# ── SECTION B: SKULL FRACTURES ───────────────────────────────────────────
story.append(heading_block("B. TYPES OF SKULL FRACTURES"))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    "Skull fractures are the most important topic in FMT exams. They are divided into "
    "<b>fractures of the cranial vault</b> and <b>fractures of the skull base</b>.",
    body_style
))
story.append(Spacer(1, 0.3*cm))

# Skull fractures image
img_skull = Image(IMG_SKULL, width=CW * 0.72, height=CW * 0.72 * (900/800))
img_skull.hAlign = "CENTER"
story.append(img_skull)
story.append(Paragraph(
    "Fig. 2: Types of skull fractures — (A) Diastatic, (B) Depressed, (C) Linear, (D) Basilar\n"
    "(The Essentials of Forensic Medicine and Toxicology, 36th Ed.)",
    caption_style
))
story.append(Spacer(1, 0.4*cm))

# ── B1: Cranial Vault ────────────────────────────────────────────────────
story.append(Paragraph("B.1 Fractures of the Cranial Vault", h2_style))

vault_fractures = [
    (
        "I. Linear (Fissured) Fracture",
        "Most common (~70% of all skull fractures). Straight or curved fracture lines of considerable length.",
        [
            "May involve one or both tables of the skull",
            "Common in weak areas: temporal, frontal, parietal, occipital bones",
            "Caused by forcible contact with a broad surface (ground), or fall on feet/buttocks",
            "Fracture line may extend to base of skull or across supraorbital ridges",
            "Also called 'motorcyclist's fracture'",
        ]
    ),
    (
        "II. Diastatic (Sutural) Fracture",
        "Linear fracture that passes into a suture line, causing separation (diastasis) of bones at the suture.",
        [
            "Most commonly involves the sagittal suture; metopic suture may reopen",
            "More common in children and young adults",
            "Medicolegally important: marker of child abuse syndrome",
        ]
    ),
    (
        "III. Depressed Fracture ('Fracture a la Signature' / Signature Fracture)",
        "Produced by an object with relatively large kinetic energy but small surface area. Fractured bone is driven inward into the skull cavity.",
        [
            "Outer table driven into the diploe; inner table fractured more extensively",
            "Shape often resembles the weapon — hence 'signature fracture'",
            "Hammer blow → circular fracture arc",
            "Firearm butt (full face) → rectangular fracture",
            "Stone → irregular/triangular fracture",
            "Deepest part of depression = where weapon first struck; 'terracing' at margins",
            "Antemortem depressed fractures in homicide show shelving inward of the outer table",
        ]
    ),
    (
        "IV. Elevated Fracture",
        "One end of fractured fragment is elevated above skull surface; the other is depressed into cranial cavity.",
        [
            "Caused by a blow from a heavy sharp weapon (axe, chopper)",
            "Fragment elevated due to lateral pull of weapon while retrieving it",
        ]
    ),
    (
        "V. Comminuted Fracture",
        "Two or more intersecting lines divide the skull into three or more fragments.",
        [
            "Caused by significant force over broad area: crushing head injuries, vehicle accidents, fall from height",
            "Also from repeated blows with heavy instruments (iron bar, poker, axe, thick stick)",
            "When no displacement: resembles spider's web or mosaic pattern",
            "Often a complication of fissured or depressed fracture",
        ]
    ),
    (
        "VI. Pond (Indented) Fracture",
        "Shallow depressed fracture forming a concave 'pond'. Most common in pliable bones of infants.",
        [
            "Depression can occur without a fracture line",
            "Analogous to squeezing a table tennis ball",
            "Caused by obstetric forceps blade or birth trauma",
        ]
    ),
    (
        "VII. Mosaic (Spider Web) Fracture",
        "Comminuted depressed fracture with multiple fissures radiating from it, forming a spider web or mosaic pattern.",
        [
            "Results when severe local impact causes both focal and general deformation of skull",
            "Classic appearance: central depression with radiating and concentric fracture lines",
        ]
    ),
    (
        "VIII. Gutter Fracture",
        "A groove-like or trough-shaped fracture caused by a tangential/grazing bullet.",
        [
            "Bullet does not penetrate skull; creates a furrow along the outer table",
            "The groove runs in the direction of the bullet",
        ]
    ),
    (
        "IX. Perforating Fracture",
        "A small circular hole punched through the skull, classically from a firearm projectile.",
        [
            "Entry wound: small, clean, punched-out, internal beveling (inner table beveled more than outer)",
            "Exit wound: larger, irregular, external beveling (outer table beveled more than inner)",
            "Entry–Exit pattern helps determine direction of fire",
        ]
    ),
    (
        "X. Blow-out Fracture",
        "Fracture of the orbital floor/walls due to blunt trauma to the eye causing increased intraorbital pressure.",
        [
            "Orbital contents herniate into maxillary sinus",
            "Signs: diplopia, enophthalmos, infraorbital nerve anaesthesia",
        ]
    ),
]

for title, desc, bullets in vault_fractures:
    block = []
    block.append(Paragraph(title, h3_style))
    block.append(Paragraph(desc, body_style))
    for b_text in bullets:
        block.append(bullet(b_text))
    block.append(Spacer(1, 0.15*cm))
    story.append(KeepTogether(block))

story.append(PageBreak())

# ── B2: Skull Base ───────────────────────────────────────────────────────
story.append(heading_block("C. FRACTURES OF THE SKULL BASE"))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    "Skull base fractures are often caused by indirect force transmission (falls from height, "
    "crush injuries) and carry characteristic clinical signs that are important medicolegally.",
    body_style
))
story.append(Spacer(1, 0.3*cm))

base_data = [
    [b("Type"), b("Mechanism"), b("Clinical / Medicolegal Signs")],
    [
        "Ring Fracture",
        "Fall from height onto feet or buttocks. Kinetic energy travels up cervical spine, ramming it into the occipital bone.",
        "Encircles the foramen magnum. Indicates fall from considerable height.",
    ],
    [
        "Hinge Fracture",
        "Lateral compression of skull between two objects (e.g., car wheel and road). Divides skull into front and back halves.",
        "Transverse fracture across base. Seen in run-over cases.",
    ],
    [
        "Anterior Cranial Fossa",
        "Blow to frontal region; fractures through orbital plates.",
        "Raccoon eyes (bilateral periorbital ecchymosis), CSF rhinorrhea, anosmia.",
    ],
    [
        "Middle Cranial Fossa",
        "Blow to temporal region; fractures through petrous temporal bone.",
        "Battle's sign (mastoid ecchymosis), CSF/blood otorrhea, hemotympanum, facial nerve palsy.",
    ],
    [
        "Posterior Cranial Fossa",
        "Blow to occipital region; fractures extend toward foramen magnum.",
        "Nuchal bruising, lower cranial nerve palsies.",
    ],
]
base_col_widths = [CW*0.20, CW*0.38, CW*0.42]
base_table = Table(base_data, colWidths=base_col_widths, repeatRows=1)
base_table.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,0), colors.HexColor("#1a2a4a")),
    ("TEXTCOLOR", (0,0), (-1,0), colors.white),
    ("FONTNAME", (0,0), (-1,0), "Helvetica-Bold"),
    ("FONTSIZE", (0,0), (-1,0), 9),
    ("FONTNAME", (0,1), (-1,-1), "Helvetica"),
    ("FONTSIZE", (0,1), (-1,-1), 8.5),
    ("ROWBACKGROUNDS", (0,1), (-1,-1), [colors.HexColor("#f4f7fb"), colors.white]),
    ("GRID", (0,0), (-1,-1), 0.4, colors.HexColor("#b0bdd0")),
    ("VALIGN", (0,0), (-1,-1), "TOP"),
    ("TOPPADDING", (0,0), (-1,-1), 5),
    ("BOTTOMPADDING", (0,0), (-1,-1), 5),
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    ("RIGHTPADDING", (0,0), (-1,-1), 5),
]))
story.append(base_table)
story.append(Spacer(1, 0.5*cm))

# ── SECTION D: MEDICOLEGAL IMPORTANCE ───────────────────────────────────
story.append(heading_block("D. MEDICOLEGAL IMPORTANCE OF FRACTURES"))
story.append(Spacer(1, 0.2*cm))

ml_points = [
    ("<b>Signature (Depressed) fractures</b> can identify the weapon/agent used based on shape and dimensions of the depression.",),
    ("<b>Spiral fractures</b> in children raise strong suspicion of non-accidental injury (child abuse).",),
    ("<b>Ring fractures</b> indicate fall from height onto feet or buttocks.",),
    ("<b>Diastatic fractures</b> are common in child abuse syndrome (sagittal suture separation).",),
    ("<b>Timing</b> (ante-, peri-, postmortem) determines whether injury occurred before or after death — critical for reconstructing events.",),
    ("<b>Direction of force:</b> Linear fractures run parallel to the direction of force when head is free; from point of impact outward when head is supported.",),
    ("<b>Perforating fractures:</b> Beveling of tables identifies entry vs. exit wound and direction of fire.",),
    ("<b>Hinge fractures</b> are seen in run-over cases (vehicle running over the head).",),
    ("<b>Force estimation:</b> ~5 foot-pounds causes a simple fissured fracture; falling from erect posture generates ~60 ft/lb and can produce skull fractures.",),
    ("<b>Scalp and hair</b> markedly cushion the impact on the vault — a much heavier blow is required to cause vault fracture compared to base fracture.",),
]

for (pt,) in ml_points:
    story.append(bullet(pt))

story.append(Spacer(1, 0.5*cm))

# ── COMPLICATIONS ─────────────────────────────────────────────────────────
story.append(Paragraph("Complications of Skull Fractures", h2_style))
comp_points = [
    "Injury to brain: direct damage at fracture site or contrecoup.",
    "Haemorrhage: if fracture passes through the middle meningeal artery → extradural haematoma (fatal).",
    "Traumatic epilepsy: late complication of depressed fracture impinging on motor cortex.",
    "Meningitis: basal skull fractures communicate with sinuses/middle ear → CSF leak → ascending infection.",
    "Cranial nerve palsy: depending on location of base fracture.",
]
for c in comp_points:
    story.append(bullet(c))

story.append(Spacer(1, 0.5*cm))
story.append(HRFlowable(width="100%", thickness=0.5, color=colors.HexColor("#b0bdd0")))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    "Sources: P.C. Dikshit Textbook of Forensic Medicine and Toxicology; "
    "The Essentials of Forensic Medicine and Toxicology, 36th Ed. (2026); "
    "Forensic Anthropology: A Comprehensive Introduction, 2nd Ed.",
    note_style
))

# ── BUILD ─────────────────────────────────────────────────────────────────
doc.build(story)
print(f"PDF created: {OUTPUT}")
Running Command

python /home/daytona/workspace/fmt-fractures/generate_pdf.py

Running Command

ls -lh /home/daytona/workspace/fmt-fractures/Types_of_Fractures_FMT.pdf

Your PDF is ready (1.3 MB, 3 pages):

Types of Fractures FMT

PDF Document · PDF

What's included:
  • Section A - General bone fracture types (Greenstick, Transverse, Spiral, Comminuted, Compound, etc.) with the illustrated diagram, plus an antemortem/perimortem/postmortem timing table
  • Section B - All 10 types of cranial vault fractures (Linear, Diastatic, Depressed/Signature, Elevated, Comminuted, Pond, Mosaic, Gutter, Perforating, Blow-out) with detailed descriptions and bullet points
  • Section C - Skull base fractures table (Ring, Hinge, Anterior/Middle/Posterior cranial fossa) with mechanisms and clinical signs
  • Section D - Medicolegal importance points and complications of skull fractures
  • Both FMT textbook images (bone fracture types diagram + skull fracture types diagram)

/ handwritten notes fracture

Asking for Preferences
Asking for Preferences
Running Command

fc-list | grep -i -E "hand|write|cursive|caveat|patrick|indie|shadows|dancing|pa…

Running Command

fc-list | head -30 && echo "---" && python3 -c "from reportlab.pdfbase import pd…

Running Command

cd /home/daytona/workspace/fmt-fractures && curl -sL "https://github.com/google/…

Writing File

~/fmt-fractures/generate_handwritten_pdf.py

from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import ParagraphStyle
from reportlab.lib.units import cm
from reportlab.lib import colors
from reportlab.platypus import (
    SimpleDocTemplate, Paragraph, Spacer, Image, Table, TableStyle,
    HRFlowable, PageBreak, KeepTogether
)
from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_JUSTIFY
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.platypus import Flowable
from reportlab.lib.utils import ImageReader
import os

# ── Register handwriting fonts ──────────────────────────────────────────────
BASE = "/home/daytona/workspace/fmt-fractures"
pdfmetrics.registerFont(TTFont("Caveat",     f"{BASE}/Caveat-Regular.ttf"))
pdfmetrics.registerFont(TTFont("CaveatBold", f"{BASE}/Caveat-Bold.ttf"))

OUTPUT   = f"{BASE}/Types_of_Fractures_FMT_Handwritten.pdf"
IMG_BONE  = f"{BASE}/bone_fractures.png"
IMG_SKULL = f"{BASE}/skull_fractures.png"

W, H = A4
CW = W - 4.2*cm   # content width

# ── Colours ─────────────────────────────────────────────────────────────────
INK        = colors.HexColor("#1a1a1a")     # near-black ink
HEAD_INK   = colors.HexColor("#0d2a6e")     # dark blue heading ink
ACCENT     = colors.HexColor("#c0392b")     # red accent (underlining, bullet)
BOX_BG     = colors.HexColor("#f9f6f0")     # cream box background
BOX_BORDER = colors.HexColor("#aaaaaa")     # light border
TABLE_HEAD = colors.HexColor("#1a3a6a")     # table header bg
TABLE_ALT  = colors.HexColor("#eef1f7")     # table alt row

# ── Flowable: horizontal rule drawn by canvas ─────────────────────────────
class RuleFlowable(Flowable):
    def __init__(self, width, color=ACCENT, thickness=1.2, dash=None):
        Flowable.__init__(self)
        self.width = width
        self.color = color
        self.thickness = thickness
        self.dash = dash
        self.height = thickness + 2

    def draw(self):
        self.canv.saveState()
        self.canv.setStrokeColor(self.color)
        self.canv.setLineWidth(self.thickness)
        if self.dash:
            self.canv.setDash(*self.dash)
        self.canv.line(0, self.thickness/2, self.width, self.thickness/2)
        self.canv.restoreState()


# ── Styles ───────────────────────────────────────────────────────────────────
def S(name, font, size, color=INK, align=TA_LEFT,
      leading=None, spaceBefore=0, spaceAfter=4,
      leftIndent=0, rightIndent=0):
    return ParagraphStyle(
        name,
        fontName=font,
        fontSize=size,
        textColor=color,
        alignment=align,
        leading=leading or (size * 1.45),
        spaceBefore=spaceBefore,
        spaceAfter=spaceAfter,
        leftIndent=leftIndent,
        rightIndent=rightIndent,
    )

title_s    = S("title",    "CaveatBold", 28, HEAD_INK, TA_CENTER, spaceAfter=2)
sub_s      = S("sub",      "Caveat",     15, colors.HexColor("#4a6080"), TA_CENTER, spaceAfter=14)
h1_s       = S("h1",       "CaveatBold", 22, HEAD_INK, spaceAfter=4, spaceBefore=16)
h2_s       = S("h2",       "CaveatBold", 17, HEAD_INK, spaceAfter=3, spaceBefore=12)
h3_s       = S("h3",       "CaveatBold", 14, ACCENT,   spaceAfter=2, spaceBefore=8)
body_s     = S("body",     "Caveat",     12, INK,      TA_JUSTIFY, spaceAfter=3, spaceBefore=1)
bullet_s   = S("bullet",   "Caveat",     12, INK,      spaceAfter=2, leftIndent=16)
caption_s  = S("caption",  "Caveat",     10, colors.HexColor("#555555"), TA_CENTER, spaceAfter=6)
note_s     = S("note",     "Caveat",     10, colors.HexColor("#777777"), spaceAfter=4)
table_h_s  = S("th",       "CaveatBold", 11, colors.white,  TA_CENTER, spaceAfter=2)
table_b_s  = S("td",       "Caveat",     11, INK,           spaceAfter=2)


def bul(text):
    return Paragraph(f"→  {text}", bullet_s)

def bold(text):
    return f'<font name="CaveatBold">{text}</font>'

def red(text):
    return f'<font color="#c0392b">{text}</font>'


# ── Table helper ──────────────────────────────────────────────────────────
def make_table(data, col_widths, header_rows=1):
    styled = []
    for ri, row in enumerate(data):
        sr = []
        for ci, cell in enumerate(row):
            sty = table_h_s if ri < header_rows else table_b_s
            sr.append(Paragraph(str(cell), sty))
        styled.append(sr)
    t = Table(styled, colWidths=col_widths, repeatRows=header_rows)
    n = len(data)
    t.setStyle(TableStyle([
        ("BACKGROUND",    (0,0),  (-1, header_rows-1), TABLE_HEAD),
        ("TEXTCOLOR",     (0,0),  (-1, header_rows-1), colors.white),
        ("FONTNAME",      (0,0),  (-1, header_rows-1), "CaveatBold"),
        ("FONTSIZE",      (0,0),  (-1, header_rows-1), 11),
        ("ROWBACKGROUNDS",(0, header_rows), (-1,-1), [TABLE_ALT, colors.white]),
        ("FONTNAME",      (0, header_rows), (-1,-1), "Caveat"),
        ("FONTSIZE",      (0, header_rows), (-1,-1), 11),
        ("GRID",          (0,0),  (-1,-1), 0.5, colors.HexColor("#c0c8d8")),
        ("VALIGN",        (0,0),  (-1,-1), "TOP"),
        ("TOPPADDING",    (0,0),  (-1,-1), 4),
        ("BOTTOMPADDING", (0,0),  (-1,-1), 4),
        ("LEFTPADDING",   (0,0),  (-1,-1), 6),
        ("RIGHTPADDING",  (0,0),  (-1,-1), 6),
        ("LINEBELOW",     (0,0),  (-1,0),  1.2, ACCENT),
    ]))
    return t


# ── Document ──────────────────────────────────────────────────────────────
doc = SimpleDocTemplate(
    OUTPUT,
    pagesize=A4,
    rightMargin=2.1*cm, leftMargin=2.1*cm,
    topMargin=2.4*cm,   bottomMargin=2*cm,
    title="Types of Fractures in FMT – Handwritten Notes",
    author="Orris Medical",
)

story = []

# ─── TITLE ────────────────────────────────────────────────────────────────
story.append(Spacer(1, 0.6*cm))
story.append(Paragraph("Types of Fractures", title_s))
story.append(Paragraph("Forensic Medicine &amp; Toxicology  (FMT)", title_s))
story.append(RuleFlowable(CW * 0.85, color=ACCENT, thickness=2))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    "Based on P.C. Dikshit FMT &amp; The Essentials of FMT, 36th Ed. (2026)",
    sub_s
))
story.append(Spacer(1, 0.5*cm))
story.append(Paragraph(
    "Fractures in FMT cover " + bold("general bone fractures") + " and " +
    bold("skull fractures") + ". The mechanism, pattern &amp; timing carry significant "
    "medicolegal implications — identifying the weapon, cause of death, and whether "
    "the injury was " + red("antemortem, perimortem, or postmortem") + ".",
    body_s
))
story.append(Spacer(1, 0.4*cm))

# ─── SECTION A ────────────────────────────────────────────────────────────
story.append(Paragraph("A.  General Classification of Bone Fractures", h1_s))
story.append(RuleFlowable(CW, color=HEAD_INK, thickness=1.5))
story.append(Spacer(1, 0.15*cm))
story.append(Paragraph(
    "Fracture forces: " + bold("Tension · Compression · Torsion · Flexion · Shearing") +
    "  (usually a combination)",
    body_s
))
story.append(Spacer(1, 0.35*cm))

# Bone image
img_b = Image(IMG_BONE, width=CW * 0.88, height=CW * 0.88 * (559/1181))
img_b.hAlign = "CENTER"
story.append(img_b)
story.append(Paragraph(
    "Fig. 1  Types of bone fractures — Greenstick, Transverse, Comminuted, Spiral, Compound",
    caption_s
))
story.append(Spacer(1, 0.35*cm))

gen_data = [
    [bold("Type"), bold("Description"), bold("Medicolegal Note")],
    ["Greenstick",        "Incomplete; bone bends, cracks one side. Children.",          "Pliable bones of infants/children."],
    ["Transverse",        "Fracture ⊥ bone axis.",                                        "Direct force."],
    ["Oblique",           "Fracture at angle across bone.",                               "Angulated force."],
    ["Spiral",            "Spirals around shaft. Torsion/twisting.",                      red("Key sign of child abuse (NAI).")],
    ["Comminuted",        "3+ fragments. Significant force.",                             "Vehicles, falls, repeated blows."],
    ["Compound (Open)",   "Bone pierces skin. External wound.",                           "Infection risk."],
    ["Simple (Closed)",   "Skin intact.",                                                 "No external wound."],
    ["Impacted",          "One fragment driven into another.",                            "Falls from height."],
    ["Avulsion",          "Fragment pulled off by muscle/ligament.",                      "Tendon attachment sites."],
    ["Stress/Fatigue",    "Repeated low-force loading.",                                  "March fracture (2nd metatarsal)."],
    ["Pathological",      "Through diseased bone with minimal force.",                    "Metastasis, osteoporosis, TB."],
]
story.append(make_table(gen_data, [CW*0.20, CW*0.45, CW*0.35]))
story.append(Spacer(1, 0.35*cm))

# Timing
story.append(Paragraph("Timing Classification", h2_s))
story.append(RuleFlowable(CW*0.4, color=ACCENT, thickness=1))
story.append(Spacer(1, 0.1*cm))
timing_data = [
    [bold("Timing"), bold("Features")],
    [red("Antemortem"),   "Evidence of bone repair: callus, periosteal reaction (after 10–14 days). Hemorrhage in soft tissue."],
    [red("Perimortem"),   "Around time of death. Edges wet/green, bone bends before breaking. No healing."],
    [red("Postmortem"),   "Edges dry, irregular, jagged. No bleeding. Incomplete fracture lines."],
]
story.append(make_table(timing_data, [CW*0.20, CW*0.80]))
story.append(Spacer(1, 0.2*cm))

story.append(PageBreak())

# ─── SECTION B ────────────────────────────────────────────────────────────
story.append(Paragraph("B.  Types of Skull Fractures", h1_s))
story.append(RuleFlowable(CW, color=HEAD_INK, thickness=1.5))
story.append(Spacer(1, 0.2*cm))
story.append(Paragraph(
    bold("Most important topic in FMT exams.") +
    "  Divided into " + bold("cranial vault") + " and " + bold("skull base") + " fractures.",
    body_s
))
story.append(Spacer(1, 0.35*cm))

# Skull image
img_s = Image(IMG_SKULL, width=CW * 0.70, height=CW * 0.70 * (900/800))
img_s.hAlign = "CENTER"
story.append(img_s)
story.append(Paragraph(
    "Fig. 2  Types of skull fractures — (A) Diastatic  (B) Depressed  (C) Linear  (D) Basilar\n"
    "The Essentials of Forensic Medicine and Toxicology, 36th Ed.",
    caption_s
))
story.append(Spacer(1, 0.4*cm))

# B.1 Vault
story.append(Paragraph("B.1  Fractures of the Cranial Vault", h2_s))
story.append(RuleFlowable(CW*0.55, color=ACCENT, thickness=1))
story.append(Spacer(1, 0.1*cm))

vault = [
    (
        "I.  Linear (Fissured) Fracture",
        bold("Most common") + " — ~70% of all skull fractures. Straight/curved lines of considerable length.",
        [
            "Involves one or both tables of skull",
            "Common in " + bold("temporal, frontal, parietal, occipital") + " (weak unsupported areas)",
            "Caused by forcible contact with broad surface (ground) or fall on feet/buttocks",
            "Fracture line may extend to skull base or across supraorbital ridges",
            red("Also called 'Motorcyclist's fracture'"),
        ]
    ),
    (
        "II.  Diastatic (Sutural) Fracture",
        "Linear fracture passing into a suture line → " + bold("separation (diastasis)") + " of bones.",
        [
            "Most commonly involves " + bold("sagittal suture"); metopic suture may reopen",
            "Common in children and young adults",
            red("Important ML sign of child abuse syndrome"),
        ]
    ),
    (
        "III.  Depressed Fracture  " + red("('Fracture à la signature')"),
        "High kinetic energy, small surface area → bone driven " + bold("inward") + " into skull cavity.",
        [
            "Outer table → diploe; inner table fractured more extensively",
            bold("Shape = weapon signature:") + "  Hammer → circular arc  |  Gun butt → rectangular  |  Stone → irregular/triangular",
            "Deepest part = point of first contact; " + bold("'terracing'") + " at margins",
            "Antemortem homicide fractures: shelving inward of outer table along fracture edges",
            red("Medicolegally = identifies the weapon used"),
        ]
    ),
    (
        "IV.  Elevated Fracture",
        "One end of fragment " + bold("elevated above") + " skull; other end depressed into cranial cavity.",
        [
            "Caused by heavy sharp weapon (axe, chopper)",
            "Fragment elevated by lateral pull while retrieving the weapon",
        ]
    ),
    (
        "V.  Comminuted Fracture",
        "≥2 intersecting lines → " + bold("3+ fragments") + ".",
        [
            "Crushing head injuries, vehicle accidents, fall from height, repeated heavy blows",
            "When no displacement → resembles " + bold("spider's web / mosaic"),
            "Often a complication of fissured or depressed fracture",
        ]
    ),
    (
        "VI.  Pond (Indented) Fracture",
        "Shallow concave " + bold("dent") + " in skull without true fracture line.",
        [
            "Most common in " + bold("pliable infant bones"),
            "Analogous to squeezing a table tennis ball",
            red("Caused by obstetric forceps blade / birth trauma"),
        ]
    ),
    (
        "VII.  Mosaic (Spider Web) Fracture",
        "Comminuted depressed fracture with fissures radiating outward — " + bold("spider web / mosaic") + " pattern.",
        [
            "Severe local impact → both focal and general skull deformation",
            "Central depression + radiating + concentric fracture lines",
        ]
    ),
    (
        "VIII.  Gutter Fracture",
        "Groove/trough-shaped fracture from " + bold("tangential/grazing bullet") + ".",
        [
            "Bullet does not penetrate skull; creates furrow along outer table",
            "Groove runs in " + bold("direction of the bullet"),
        ]
    ),
    (
        "IX.  Perforating Fracture",
        bold("Circular hole") + " punched through skull — classic firearm injury.",
        [
            red("Entry:") + "  small, clean, punched-out; " + bold("internal beveling") + " (inner table > outer table)",
            red("Exit:") + "   larger, irregular; " + bold("external beveling") + " (outer table > inner table)",
            "Entry–Exit pattern → determines direction of fire",
        ]
    ),
    (
        "X.  Blow-out Fracture",
        bold("Orbital floor/wall") + " fracture from blunt trauma to eye → raised intraorbital pressure.",
        [
            "Orbital contents herniate into maxillary sinus",
            "Signs: diplopia, enophthalmos, infraorbital nerve anaesthesia",
        ]
    ),
]

for (title, desc, bullets) in vault:
    block = []
    block.append(Paragraph(title, h3_s))
    block.append(Paragraph(desc, body_s))
    for bt in bullets:
        block.append(bul(bt))
    block.append(Spacer(1, 0.18*cm))
    story.append(KeepTogether(block))

story.append(PageBreak())

# B.2 Skull Base
story.append(Paragraph("B.2  Fractures of the Skull Base", h2_s))
story.append(RuleFlowable(CW*0.55, color=ACCENT, thickness=1))
story.append(Spacer(1, 0.15*cm))

base_data = [
    [bold("Type"), bold("Mechanism"), bold("Clinical / ML Signs")],
    ["Ring Fracture",
     "Fall from height onto feet/buttocks. Energy up spine → rams into occipital bone.",
     "Encircles foramen magnum. " + red("Indicates fall from height.")],
    ["Hinge Fracture",
     "Lateral compression between two objects. Divides skull into front/back.",
     "Transverse base fracture. " + red("Seen in run-over cases.")],
    ["Anterior Cranial Fossa",
     "Blow to frontal region; fracture through orbital plates.",
     red("Raccoon eyes") + ", CSF rhinorrhea, anosmia."],
    ["Middle Cranial Fossa",
     "Blow to temporal region; fracture through petrous temporal bone.",
     red("Battle's sign") + ", CSF/blood otorrhea, hemotympanum, VII nerve palsy."],
    ["Posterior Cranial Fossa",
     "Blow to occipital region; fractures extend to foramen magnum.",
     "Nuchal bruising, lower CN palsies."],
]
story.append(make_table(base_data, [CW*0.20, CW*0.40, CW*0.40]))
story.append(Spacer(1, 0.5*cm))

# ─── SECTION C ────────────────────────────────────────────────────────────
story.append(Paragraph("C.  Medicolegal Importance", h1_s))
story.append(RuleFlowable(CW, color=HEAD_INK, thickness=1.5))
story.append(Spacer(1, 0.15*cm))

ml_points = [
    bold("Signature (Depressed) fractures") + " → identify weapon/agent from shape & dimensions.",
    bold("Spiral fractures in children") + " → " + red("non-accidental injury / child abuse (NAI)."),
    bold("Ring fractures") + " → fall from height onto feet or buttocks.",
    bold("Diastatic fractures") + " → sagittal suture separation; " + red("child abuse syndrome."),
    bold("Timing") + " (ante-/peri-/postmortem) → determines whether injury occurred before or after death.",
    bold("Direction of force:") + " fracture runs parallel to force when head is free; radially from impact when supported.",
    bold("Perforating fractures:") + " entry vs. exit beveling → determines direction of fire.",
    bold("Hinge fractures") + " → run-over cases (vehicle wheel over the head).",
    bold("Force estimation:") + " ~5 ft·lb → simple fissured fracture; falling from standing → ~60 ft·lb.",
    bold("Scalp & hair") + " cushion vault — far heavier impact needed to fracture vault vs. skull base.",
]
for pt in ml_points:
    story.append(bul(pt))

story.append(Spacer(1, 0.4*cm))

# Complications
story.append(Paragraph("Complications of Skull Fractures", h2_s))
story.append(RuleFlowable(CW*0.50, color=ACCENT, thickness=1))
story.append(Spacer(1, 0.1*cm))
comps = [
    "Brain injury — direct or contrecoup.",
    red("Extradural haemorrhage") + " — if fracture crosses " + bold("middle meningeal artery") + " (temporal fossa). Fatal.",
    bold("Traumatic epilepsy") + " — late complication of depressed fracture impinging on motor cortex.",
    bold("Meningitis") + " — basal fractures communicate with sinuses/middle ear → CSF leak → ascending infection.",
    "Cranial nerve palsy — depending on location of base fracture.",
]
for c in comps:
    story.append(bul(c))

story.append(Spacer(1, 0.6*cm))
story.append(RuleFlowable(CW, color=colors.HexColor("#aaaaaa"), thickness=0.7))
story.append(Spacer(1, 0.15*cm))
story.append(Paragraph(
    "Sources:  P.C. Dikshit Textbook of Forensic Medicine and Toxicology  ·  "
    "The Essentials of Forensic Medicine and Toxicology, 36th Ed. (2026)  ·  "
    "Forensic Anthropology: A Comprehensive Introduction, 2nd Ed.",
    note_s
))

# ── BUILD ─────────────────────────────────────────────────────────────────
doc.build(story)
print(f"PDF created: {OUTPUT}")
Running Command

python /home/daytona/workspace/fmt-fractures/generate_handwritten_pdf.py 2>&1

Editing File

~/fmt-fractures/generate_handwritten_pdf.py

Successfully replaced 1 instance(s) of the string in '/home/daytona/workspace/fmt-fractures/generate_handwritten_pdf.py'
Running Command

python /home/daytona/workspace/fmt-fractures/generate_handwritten_pdf.py 2>&1

Running Command

cd /home/daytona/workspace/fmt-fractures && rm -f Caveat-Regular.ttf Caveat-Bold…

Running Command

cd /home/daytona/workspace/fmt-fractures && python3 -c " import requests, os # …

Running Command

python3 -c " # Try to find any cursive/handwriting-like fonts already available …

Running Command

python3 -c " import matplotlib import matplotlib.font_manager as fm # Check if a…

Writing File

~/fmt-fractures/generate_hw_mpl.py

"""
Generates a handwritten-style PDF for Types of Fractures in FMT
using matplotlib's xkcd() mode (sketchy/hand-drawn rendering).
"""
import matplotlib
matplotlib.use("Agg")
import matplotlib.pyplot as plt
import matplotlib.patches as mpatches
from matplotlib.patches import FancyBboxPatch
from matplotlib.backends.backend_pdf import PdfPages
from PIL import Image as PILImage
import numpy as np
import textwrap, os

OUTPUT   = "/home/daytona/workspace/fmt-fractures/Types_of_Fractures_FMT_Handwritten.pdf"
IMG_BONE  = "/home/daytona/workspace/fmt-fractures/bone_fractures.png"
IMG_SKULL = "/home/daytona/workspace/fmt-fractures/skull_fractures.png"

INK    = "#1a1a2e"
BLUE   = "#0a2a6e"
RED    = "#c0392b"
CREAM  = "#fffdf5"
LTBLUE = "#d6e4f0"
LTRED  = "#fdecea"

def new_page(pdf):
    fig, ax = plt.subplots(figsize=(8.27, 11.69))  # A4
    ax.set_xlim(0, 100)
    ax.set_ylim(0, 100)
    ax.axis("off")
    fig.patch.set_facecolor(CREAM)
    ax.set_facecolor(CREAM)
    return fig, ax

def save_page(pdf, fig):
    pdf.savefig(fig, bbox_inches="tight", facecolor=CREAM)
    plt.close(fig)

def hw_text(ax, x, y, text, size=11, color=INK, bold=False, ha="left", style="normal"):
    weight = "bold" if bold else "normal"
    ax.text(x, y, text, fontsize=size, color=color, ha=ha, va="top",
            weight=weight, style=style,
            fontfamily="DejaVu Sans",
            transform=ax.transData)

def section_bar(ax, y, label, color=BLUE):
    ax.add_patch(FancyBboxPatch((0, y-4.5), 100, 5.5,
                                boxstyle="square,pad=0", linewidth=0,
                                facecolor=color, alpha=0.92))
    ax.text(1.5, y+0.4, label, fontsize=13, color="white", weight="bold",
            va="top", fontfamily="DejaVu Sans")

def divider(ax, y, color=RED, lw=1.2):
    ax.plot([0, 100], [y, y], color=color, lw=lw, solid_capstyle="round")

def bullet_point(ax, x, y, text, size=9.8, color=INK, indent=2.5, wrap=90):
    lines = textwrap.wrap(text, wrap)
    ax.text(x, y, "→", fontsize=size, color=RED, va="top",
            fontfamily="DejaVu Sans")
    for i, line in enumerate(lines):
        ax.text(x + indent, y - i * (size * 0.35), line,
                fontsize=size, color=color, va="top",
                fontfamily="DejaVu Sans")
    return y - len(lines) * (size * 0.35) - 1.0

def draw_table(ax, x, y, headers, rows, col_widths, row_h=4.5, head_color=BLUE,
               alt_color="#eef2f8", font_size=9):
    cx = x
    # Header row
    for h, w in zip(headers, col_widths):
        ax.add_patch(FancyBboxPatch((cx, y - row_h), w, row_h,
                                    boxstyle="square,pad=0", linewidth=0.5,
                                    facecolor=head_color, edgecolor="#aaaaaa"))
        lines = textwrap.wrap(h, int(w * 1.5))
        for li, ln in enumerate(lines[:2]):
            ax.text(cx + 0.5, y - 0.7 - li * 2.8, ln,
                    fontsize=font_size, color="white", weight="bold", va="top",
                    fontfamily="DejaVu Sans")
        cx += w
    y -= row_h
    # Data rows
    for ri, row in enumerate(rows):
        bg = alt_color if ri % 2 == 0 else "white"
        cx = x
        # calc row height from content
        max_lines = max(len(textwrap.wrap(str(cell), int(w * 1.5))) for cell, w in zip(row, col_widths))
        rh = max(row_h, max_lines * 2.8 + 1.5)
        for cell, w in zip(row, col_widths):
            ax.add_patch(FancyBboxPatch((cx, y - rh), w, rh,
                                        boxstyle="square,pad=0", linewidth=0.4,
                                        facecolor=bg, edgecolor="#c0c8d8"))
            lines = textwrap.wrap(str(cell), int(w * 1.5))
            for li, ln in enumerate(lines):
                ax.text(cx + 0.5, y - 0.6 - li * 2.6, ln,
                        fontsize=font_size - 0.5, color=INK, va="top",
                        fontfamily="DejaVu Sans")
            cx += w
        y -= rh
    return y  # returns y after table

def img_section(ax, img_path, x, y, w, caption):
    try:
        img = PILImage.open(img_path)
        iw, ih = img.size
        h = w * ih / iw
        ax.imshow(np.array(img), extent=[x, x + w, y - h, y], aspect="auto",
                  interpolation="bilinear")
        ax.text(50, y - h - 1.5, caption, fontsize=8.5, color="#555555",
                ha="center", va="top", style="italic", fontfamily="DejaVu Sans")
        return y - h - 4.5
    except Exception as e:
        ax.text(x, y - 2, f"[Image: {caption}]", fontsize=9, color="#888888", va="top")
        return y - 10


# ══════════════════════════════════════════════════════════════════════════════
#  BUILD PDF
# ══════════════════════════════════════════════════════════════════════════════
with plt.xkcd(scale=0.6, length=100, randomness=2):
    with PdfPages(OUTPUT) as pdf:

        # ─────────────────────────────────────────────────────────────────────
        # PAGE 1: Title + Section A
        # ─────────────────────────────────────────────────────────────────────
        fig, ax = new_page(pdf)

        # Title
        ax.text(50, 98, "Types of Fractures", fontsize=22, color=BLUE,
                ha="center", va="top", weight="bold", fontfamily="DejaVu Sans")
        ax.text(50, 93, "Forensic Medicine & Toxicology  (FMT)", fontsize=14,
                color=BLUE, ha="center", va="top", fontfamily="DejaVu Sans")
        divider(ax, 90, RED, 2.0)
        ax.text(50, 89.2, "Based on P.C. Dikshit FMT & The Essentials of FMT, 36th Ed. (2026)",
                fontsize=9, color="#555555", ha="center", va="top", style="italic",
                fontfamily="DejaVu Sans")
        ax.text(2, 87, (
            "Fractures in FMT cover general bone fractures and skull fractures. "
            "The mechanism, pattern & timing carry\n"
            "significant medicolegal implications — identifying the weapon, cause of death, and whether the injury was\n"
            "antemortem, perimortem, or postmortem."
        ), fontsize=9.5, color=INK, va="top", fontfamily="DejaVu Sans", linespacing=1.5)

        # Section A bar
        section_bar(ax, 80.5, "A.  General Classification of Bone Fractures", BLUE)
        ax.text(2, 78.5,
                "Forces on bone:  Tension  ·  Compression  ·  Torsion  ·  Flexion  ·  Shearing  (usually a combination)",
                fontsize=9.5, color=INK, weight="bold", va="top", fontfamily="DejaVu Sans")

        # Bone image
        y_after = img_section(ax, IMG_BONE, 8, 76.5, 84,
                              "Fig. 1  Types of bone fractures — Greenstick, Transverse, Comminuted, Spiral, Compound")

        # General table (truncated to fit)
        headers = ["Type", "Description", "Medicolegal Note"]
        rows = [
            ["Greenstick",       "Incomplete; bone bends, cracks one side.",         "Children's pliable bones."],
            ["Transverse",       "Fracture ⊥ bone axis.",                             "Direct force."],
            ["Oblique",          "Fracture at angle across bone.",                    "Angulated force."],
            ["Spiral",           "Spirals around shaft. Torsion/twisting.",           "★ Child abuse (NAI) sign."],
            ["Comminuted",       "3+ fragments. High force.",                         "Vehicles, falls, blows."],
            ["Compound (Open)",  "Bone pierces skin.",                               "Infection risk."],
            ["Simple (Closed)",  "Skin intact.",                                      "No external wound."],
            ["Impacted",         "One fragment driven into another.",                 "Falls from height."],
            ["Avulsion",         "Fragment pulled off by muscle/ligament.",           "Tendon attachments."],
            ["Stress/Fatigue",   "Repeated low-force loading.",                       "March fracture."],
            ["Pathological",     "Minimal force through diseased bone.",              "Metastasis, TB, osteoporosis."],
        ]
        y_after = draw_table(ax, 2, y_after - 1, headers, rows,
                             [22, 44, 32], row_h=4.2, font_size=8.8)

        save_page(pdf, fig)

        # ─────────────────────────────────────────────────────────────────────
        # PAGE 2: Timing + Skull Fracture intro + skull image
        # ─────────────────────────────────────────────────────────────────────
        fig, ax = new_page(pdf)

        # Timing section
        ax.text(2, 98, "Timing Classification  (Medicolegal Importance)", fontsize=12,
                color=BLUE, weight="bold", va="top", fontfamily="DejaVu Sans")
        divider(ax, 95.5, RED)

        timing_rows = [
            ["Antemortem",  "Evidence of bone repair: callus, periosteal reaction (after 10-14 days). Haemorrhage in soft tissue."],
            ["Perimortem",  "Around time of death. Edges wet/green, bone bends before breaking. No healing response."],
            ["Postmortem",  "Edges dry, irregular, jagged. No bleeding. Incomplete fracture lines."],
        ]
        y_t = draw_table(ax, 2, 94.5, ["Timing", "Features"], timing_rows,
                         [20, 78], row_h=5.5, head_color="#2e5090", font_size=9)

        # Section B bar
        section_bar(ax, y_t - 2, "B.  Types of Skull Fractures", BLUE)
        ax.text(2, y_t - 8,
                "Most important topic in FMT exams. Divided into  cranial vault  and  skull base  fractures.",
                fontsize=9.5, color=INK, va="top", fontfamily="DejaVu Sans")

        # Skull image
        y_after_skull = img_section(ax, IMG_SKULL, 15, y_t - 10, 70,
            "Fig. 2  (A) Diastatic  (B) Depressed  (C) Linear  (D) Basilar\n"
            "The Essentials of Forensic Medicine and Toxicology, 36th Ed.")

        save_page(pdf, fig)

        # ─────────────────────────────────────────────────────────────────────
        # PAGE 3: Vault fractures I–V
        # ─────────────────────────────────────────────────────────────────────
        fig, ax = new_page(pdf)

        ax.text(2, 98, "B.1  Fractures of the Cranial Vault", fontsize=13,
                color=BLUE, weight="bold", va="top", fontfamily="DejaVu Sans")
        divider(ax, 95.5, BLUE, 1.3)

        vault_items = [
            ("I.  Linear (Fissured) Fracture", RED,
             "Most common — ~70% of skull fractures. Straight/curved lines of considerable length.",
             [
                 "Involves one or both tables of skull",
                 "Common in temporal, frontal, parietal, occipital bones (weak unsupported areas)",
                 "Caused by broad surface contact (ground) or fall on feet/buttocks",
                 "Fracture may extend to skull base or across supraorbital ridges",
                 "Also called 'Motorcyclist's fracture'",
             ]),
            ("II.  Diastatic (Sutural) Fracture", RED,
             "Linear fracture passing into suture line → separation (diastasis) of bones.",
             [
                 "Most commonly involves sagittal suture; metopic suture may reopen",
                 "Common in children and young adults",
                 "★ Important ML sign of child abuse syndrome",
             ]),
            ("III.  Depressed Fracture  ['Fracture à la Signature']", RED,
             "High kinetic energy, small surface area → bone driven inward into skull cavity.",
             [
                 "Outer table → diploe; inner table fractured more extensively",
                 "Shape = weapon signature:  Hammer→ circular  |  Gun butt→ rectangular  |  Stone→ triangular",
                 "Deepest point = first contact; 'terracing' at margins",
                 "★ Medicolegally identifies the weapon used",
             ]),
            ("IV.  Elevated Fracture", RED,
             "One end of fragment elevated above skull surface; other end depressed into cranial cavity.",
             [
                 "Heavy sharp weapon (axe, chopper)",
                 "Fragment elevated by lateral pull when retrieving the weapon",
             ]),
            ("V.  Comminuted Fracture", RED,
             "≥2 intersecting lines → 3+ fragments.",
             [
                 "Crushing head injuries, vehicle accidents, fall from height, repeated heavy blows",
                 "When no displacement → resembles spider's web / mosaic",
                 "Often complicates fissured or depressed fracture",
             ]),
        ]

        y = 94.5
        for title, tc, desc, bullets in vault_items:
            ax.text(2, y, title, fontsize=10.5, color=tc, weight="bold",
                    va="top", fontfamily="DejaVu Sans")
            y -= 4.0
            # desc wrapped
            for line in textwrap.wrap(desc, 100):
                ax.text(3, y, line, fontsize=9.3, color=INK, va="top",
                        fontfamily="DejaVu Sans")
                y -= 3.2
            for b in bullets:
                y = bullet_point(ax, 4, y, b, size=9, wrap=92)
            y -= 1.2
            if y < 5:
                break

        save_page(pdf, fig)

        # ─────────────────────────────────────────────────────────────────────
        # PAGE 4: Vault fractures VI–X + Base fractures table
        # ─────────────────────────────────────────────────────────────────────
        fig, ax = new_page(pdf)

        ax.text(2, 98, "B.1 (continued)  +  B.2  Skull Base Fractures", fontsize=13,
                color=BLUE, weight="bold", va="top", fontfamily="DejaVu Sans")
        divider(ax, 95.5, BLUE, 1.3)

        vault_cont = [
            ("VI.  Pond (Indented) Fracture", RED,
             "Shallow concave dent in skull without a true fracture line.",
             [
                 "Most common in pliable infant bones",
                 "Analogous to squeezing a table tennis ball",
                 "★ Caused by obstetric forceps blade / birth trauma",
             ]),
            ("VII.  Mosaic (Spider Web) Fracture", RED,
             "Comminuted depressed fracture with radiating fissures → spider web / mosaic pattern.",
             [
                 "Severe local impact → focal + general skull deformation",
                 "Central depression + radiating + concentric fracture lines",
             ]),
            ("VIII.  Gutter Fracture", RED,
             "Groove/trough-shaped fracture from a tangential/grazing bullet.",
             [
                 "Bullet does not penetrate skull; creates furrow along outer table",
                 "Groove runs in direction of the bullet",
             ]),
            ("IX.  Perforating Fracture", RED,
             "Circular hole punched through skull — classic firearm injury.",
             [
                 "Entry: small, clean, punched-out; internal beveling (inner table > outer table)",
                 "Exit: larger, irregular; external beveling (outer table > inner table)",
                 "Entry-Exit pattern → determines direction of fire",
             ]),
            ("X.  Blow-out Fracture", RED,
             "Orbital floor/wall fracture from blunt trauma to eye → raised intraorbital pressure.",
             [
                 "Orbital contents herniate into maxillary sinus",
                 "Signs: diplopia, enophthalmos, infraorbital nerve anaesthesia",
             ]),
        ]

        y = 94.5
        for title, tc, desc, bullets in vault_cont:
            ax.text(2, y, title, fontsize=10.5, color=tc, weight="bold",
                    va="top", fontfamily="DejaVu Sans")
            y -= 4.0
            for line in textwrap.wrap(desc, 100):
                ax.text(3, y, line, fontsize=9.3, color=INK, va="top",
                        fontfamily="DejaVu Sans")
                y -= 3.2
            for b in bullets:
                y = bullet_point(ax, 4, y, b, size=9, wrap=92)
            y -= 1.2

        # Skull Base table
        y -= 1
        ax.text(2, y, "B.2  Fractures of the Skull Base", fontsize=11,
                color=BLUE, weight="bold", va="top", fontfamily="DejaVu Sans")
        divider(ax, y - 3, RED)
        y -= 4.5

        base_rows = [
            ["Ring Fracture",
             "Fall from height onto feet/buttocks. Energy up spine → occipital bone.",
             "Encircles foramen magnum. ★ Indicates fall from height."],
            ["Hinge Fracture",
             "Lateral compression between two objects.",
             "Transverse base fracture. ★ Run-over cases."],
            ["Anterior Fossa",
             "Blow to frontal region; fracture through orbital plates.",
             "Raccoon eyes, CSF rhinorrhea, anosmia."],
            ["Middle Fossa",
             "Blow to temporal region; fracture through petrous bone.",
             "Battle's sign, CSF otorrhea, hemotympanum, VII nerve palsy."],
            ["Posterior Fossa",
             "Blow to occipital region; fracture toward foramen magnum.",
             "Nuchal bruising, lower cranial nerve palsies."],
        ]
        y = draw_table(ax, 2, y, ["Type", "Mechanism", "Clinical / ML Signs"],
                       base_rows, [22, 40, 36], row_h=5.5, font_size=8.8)

        save_page(pdf, fig)

        # ─────────────────────────────────────────────────────────────────────
        # PAGE 5: Medicolegal Importance + Complications
        # ─────────────────────────────────────────────────────────────────────
        fig, ax = new_page(pdf)

        section_bar(ax, 98, "C.  Medicolegal Importance of Fractures", BLUE)
        divider(ax, 92.5, RED)

        ml = [
            "Signature (Depressed) fractures → identify weapon/agent from shape & dimensions of depression.",
            "Spiral fractures in children → ★ Non-Accidental Injury (NAI) / child abuse.",
            "Ring fractures → fall from height onto feet or buttocks.",
            "Diastatic fractures → sagittal suture separation; ★ child abuse syndrome.",
            "Timing (ante-/peri-/postmortem) → determines whether injury occurred before or after death.",
            "Direction of force: fracture runs parallel to force when head free; radially from impact when head supported.",
            "Perforating fractures: entry vs. exit beveling → determines direction of fire.",
            "Hinge fractures → run-over cases (vehicle wheel running over the head).",
            "Force estimation: ~5 ft·lb → simple fissured fracture; falling from standing → ~60 ft·lb.",
            "Scalp & hair cushion vault — far heavier impact needed for vault vs. skull base fracture.",
        ]

        y = 91.0
        for pt in ml:
            y = bullet_point(ax, 3, y, pt, size=9.8, wrap=95)
            y -= 0.3

        y -= 2
        ax.text(2, y, "Complications of Skull Fractures", fontsize=11,
                color=BLUE, weight="bold", va="top", fontfamily="DejaVu Sans")
        divider(ax, y - 3, RED)
        y -= 5

        comps = [
            "Brain injury — direct damage at fracture site or contrecoup.",
            "★ Extradural haemorrhage — fracture crosses middle meningeal artery (temporal fossa). Fatal.",
            "Traumatic epilepsy — late complication of depressed fracture impinging on motor cortex.",
            "Meningitis — basal fractures communicate with sinuses/middle ear → CSF leak → ascending infection.",
            "Cranial nerve palsy — depending on location of base fracture.",
        ]
        for c in comps:
            y = bullet_point(ax, 3, y, c, size=9.8, wrap=95)
            y -= 0.3

        # Footer
        divider(ax, 4.5, "#aaaaaa", 0.6)
        ax.text(50, 3.8,
                "Sources: P.C. Dikshit Textbook of FMT  ·  The Essentials of FMT, 36th Ed. (2026)  ·  Forensic Anthropology: A Comprehensive Intro, 2nd Ed.",
                fontsize=7.5, color="#777777", ha="center", va="top", style="italic",
                fontfamily="DejaVu Sans")

        save_page(pdf, fig)

print(f"Done: {OUTPUT}")
Running Command

python /home/daytona/workspace/fmt-fractures/generate_hw_mpl.py 2>&1

Running Command

ls -lh /home/daytona/workspace/fmt-fractures/Types_of_Fractures_FMT_Handwritten.…

Your handwritten-style notes PDF is ready (3.6 MB, 5 pages):

Types of Fractures FMT Handwritten

PDF Document · PDF

What's inside (5 pages):
PageContent
1Title + Section A — General bone fracture types table + bone diagram image
2Timing classification (ante/peri/postmortem) + Section B intro + skull fracture diagram image
3Vault fractures I–V (Linear, Diastatic, Depressed/Signature, Elevated, Comminuted)
4Vault fractures VI–X (Pond, Mosaic, Gutter, Perforating, Blow-out) + Skull Base fractures table
5Medicolegal importance + Complications
Style: Rendered using matplotlib's xkcd sketchy/hand-drawn mode on a cream background - all text, lines, table borders, and arrows have a slight hand-drawn wobble that mimics real notes. Red arrows () are used as bullet markers, and section headers are styled with dark blue filled bars.
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