ANATOMY - FIRST YEAR MBBS (BFUHS) - 10 MARK ANSWERS

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// ════════════════════════════════════════════════════════════════
//  CONTENT SECTIONS
// ════════════════════════════════════════════════════════════════

const children = [];

// ── COVER PAGE ───────────────────────────────────────────────────
children.push(
  new Paragraph({
    children: [new TextRun({ text: "FIRST YEAR MBBS", bold: true, size: 56, color: WHITE })],
    alignment: AlignmentType.CENTER,
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  new Paragraph({
    children: [new TextRun({ text: "ANATOMY", bold: true, size: 72, color: TEAL })],
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  new Paragraph({
    children: [new TextRun({ text: "10-Mark Answer Bank", bold: true, size: 40, color: "37474F" })],
    alignment: AlignmentType.CENTER,
    spacing: { before: 200, after: 200 },
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  new Paragraph({
    children: [new TextRun({ text: "Lower Limb  |  BFUHS Unsolved Papers", size: 28, color: "607D8B" })],
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    spacing: { before: 200, after: 200 },
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  new Paragraph({
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  new Paragraph({
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// ════════════════════════════════════════════════════════════════
//  Q1  AVASCULAR NECROSIS
// ════════════════════════════════════════════════════════════════
children.push(
  h1("SECTION: LOWER LIMB – BONES"),
  h2("Q1. Why does avascular necrosis of the head of femur occur following fracture neck of femur? (2021)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 21 | Gray's Anatomy for Students (South Asia Ed.)", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("Avascular necrosis (AVN) of the femoral head is one of the most serious complications of a fractured neck of femur. It is directly related to the precarious blood supply to the femoral head."),

  h3("Blood Supply to the Head of Femur"),
  para("The femoral head receives its blood supply from three main sources:"),
  bullet("Medial circumflex femoral artery (MCFA) – most important; gives retinacular branches (superior and inferior) that ascend along the femoral neck beneath the synovial reflection to supply the head. It is a branch of the profunda femoris artery."),
  bullet("Lateral circumflex femoral artery (LCFA) – minor contribution via retinacular branches."),
  bullet("Artery of ligamentum teres (branch of obturator artery) – supplies a small area around the fovea; functionally insignificant in adults."),
  para("The retinacular vessels run along the neck of the femur in subsynovial retinacular folds (Weitbrecht's retinacula). These are the DOMINANT supply in adults."),

  h3("Mechanism of AVN After Fracture Neck of Femur"),
  bullet("The retinacular vessels are torn or compressed by displaced bone fragments."),
  bullet("Since the femoral head lies entirely within the joint capsule (intracapsular fracture), all intracapsular vessels are disrupted."),
  bullet("The artery of the ligamentum teres is too small in adults to compensate."),
  bullet("Intra-articular haematoma raises pressure within the joint capsule, compressing remaining vessels (tamponade effect)."),
  bullet("Result: complete ischaemia → osteonecrosis of femoral head."),

  h3("Risk Factors"),
  twoColTable([
    ["Degree of displacement", "Garden Stage III & IV → highest risk"],
    ["Age",                    "Elderly, osteoporotic patients"],
    ["Delay in fixation",      "Longer delay = higher AVN rate"],
    ["Fracture pattern",       "Subcapital fractures most dangerous"],
  ], ["Risk Factor", "Details"]),
  new Paragraph({ spacing: { before: 120 } }),

  note("AVN may manifest as femoral head collapse weeks to months post-fracture. Treatment: hemiarthroplasty or total hip replacement."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q2  FEMORAL TRIANGLE
// ════════════════════════════════════════════════════════════════
children.push(
  h1("SECTION: FRONT OF THIGH"),
  h2("Q2. Draw and label boundaries and contents of femoral triangle. (2015, 2014, 2007)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 52–54 | Gray's Anatomy for Students, p 675", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("The femoral triangle is a wedge-shaped subfascial space on the upper anterior thigh, just below the inguinal ligament. It is the gateway between the abdomen and the lower limb."),

  h3("Boundaries"),
  twoColTable([
    ["Base (superior)",  "Inguinal ligament"],
    ["Lateral border",   "Medial border of Sartorius muscle"],
    ["Medial border",    "Medial border of Adductor longus muscle"],
    ["Apex",             "Junction of sartorius & adductor longus; continues as adductor canal"],
    ["Floor",            "Laterally – Iliopsoas; Medially – Pectineus + Adductor longus"],
    ["Roof",             "Fascia lata (pierced by great saphenous vein at saphenous opening)"],
  ], ["Boundary", "Structure"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Contents – mnemonic 'NAVEL' (Lateral → Medial)"),
  bullet("N – Nerve (Femoral nerve): most lateral; divides into anterior and posterior divisions within the triangle"),
  bullet("A – Artery (Femoral artery): central; palpable at mid-inguinal point"),
  bullet("V – Vein (Femoral vein): medial to artery"),
  bullet("E – Empty space (Femoral canal): most medial compartment of femoral sheath"),
  bullet("L – Lymphatics: deep inguinal lymph nodes + lymphatic vessels"),

  h3("Femoral Sheath"),
  para("Formed by:"),
  bullet("Anterior wall: Transversalis fascia"),
  bullet("Posterior wall: Iliacus fascia"),
  para("Contains 3 compartments: Lateral (artery) | Middle (vein) | Medial (femoral canal). NOTE: Femoral nerve is lateral to the sheath and NOT enclosed within it."),

  h3("Diagram (Schematic)"),
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"    ┌─────────── Inguinal Ligament (Base) ───────────┐\n" +
"   Sartorius                               Adductor Longus\n" +
"   (lateral)                               (medial)\n" +
"        \\                                    /\n" +
"                        APEX\n" +
"                  (→ Adductor Canal)\n\n" +
"Floor:    Iliopsoas  |  Pectineus + Adductor Longus\n" +
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  note("Femoral pulse palpated at mid-inguinal point. Femoral artery catheterisation uses this triangle for cardiac procedures. Femoral hernia emerges through the femoral ring."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q3  ADDUCTOR CANAL
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q3. Describe the boundaries and contents of adductor canal. (2023, 2022, 2010, 2008)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 63–64", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("The adductor canal (Hunter's canal / subsartorial canal) is a fascial tunnel in the middle third of the thigh that transmits the femoral vessels and saphenous nerve from the femoral triangle to the popliteal fossa."),

  h3("Extent"),
  para("From the apex of the femoral triangle (superiorly) to the adductor hiatus in adductor magnus (inferiorly)."),

  h3("Boundaries"),
  twoColTable([
    ["Anterior / Lateral wall", "Vastus medialis muscle"],
    ["Posterior wall (upper)",  "Adductor longus muscle"],
    ["Posterior wall (lower)",  "Adductor magnus muscle"],
    ["Roof / Medial wall",      "Sartorius muscle (overlies the canal; fascial roof)"],
  ], ["Wall", "Structure"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Contents"),
  bullet("Femoral artery – main occupant; exits at adductor hiatus to become the popliteal artery"),
  bullet("Femoral vein – lies posterior to the artery within the canal"),
  bullet("Saphenous nerve – largest cutaneous branch of femoral nerve; exits through fascia between sartorius and gracilis to supply medial leg and foot"),
  bullet("Nerve to vastus medialis – travels briefly in canal before entering the muscle"),
  bullet("Descending genicular artery – branch of femoral artery given off in canal; supplies knee joint"),

  h3("Openings"),
  twoColTable([
    ["Superior",  "Apex of femoral triangle"],
    ["Inferior",  "Adductor hiatus (gap in adductor magnus tendon) → femoral vessels become popliteal vessels"],
  ], ["Opening", "Structure"]),
  new Paragraph({ spacing: { before: 120 } }),

  note("Adductor canal block: anaesthesia for knee surgery blocks saphenous nerve without affecting motor power (motor-sparing). Femoral artery stenosis in canal → thigh claudication. The canal is a pathway for infection spread between thigh and popliteal fossa."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q4  VASTUS MEDIALIS
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q4. Describe the vastus medialis muscle – Origin, Insertion, Action. (2021)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 62 | Thieme Atlas of Anatomy, p 507", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("Vastus medialis is the most medially placed component of the quadriceps femoris. It forms the prominent bulge on the medial lower thigh above the patella, and its oblique fibres (VMO) are critical for patellar stability."),

  h3("a. Origin"),
  bullet("Medial lip of the linea aspera (entire length)"),
  bullet("Distal part of the intertrochanteric line"),
  bullet("Medial supracondylar line of the femur"),
  bullet("Tendons of adductor longus and adductor magnus (via intermuscular septum)"),

  h3("b. Insertion"),
  bullet("Medial border of the patella via the quadriceps femoris tendon"),
  bullet("Medial aspect of the tibial tuberosity via the medial patellar retinaculum"),

  h3("c. Actions"),
  bullet("Extension of the knee joint (primary action)"),
  bullet("Prevention of lateral patellar displacement – the oblique fibers (VMO) apply a medially directed force on the patella, keeping it in the trochlear groove"),
  bullet("Stabilisation of the knee joint during weight-bearing"),

  h3("Nerve Supply & Blood Supply"),
  twoColTable([
    ["Nerve supply",  "Femoral nerve (L2, L3, L4)"],
    ["Blood supply",  "Lateral circumflex femoral artery; muscular branches of femoral artery"],
  ], ["Property", "Details"]),
  new Paragraph({ spacing: { before: 120 } }),

  note("VMO is the last part of quadriceps to recover post-surgery — specifically targeted in physiotherapy after TKR. VMO weakness → patellofemoral pain syndrome and patellar subluxation. Wasting of vastus medialis is an early sign of femoral nerve palsy or quadriceps disease."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q5  FEMORAL CANAL
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q5. Write a short note on femoral canal / femoral sheath. (2021, 2006)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 54–55 | Gray's Anatomy for Students, p 676", { italics: true, color: "546E7A" }),

  h3("Femoral Sheath"),
  para("In the femoral triangle, the femoral artery, vein and lymphatics are enclosed in a funnel-shaped fascial sleeve – the femoral sheath. It is:"),
  bullet("Continuous superiorly with transversalis fascia (anteriorly) and iliac fascia (posteriorly)"),
  bullet("Merges inferiorly with connective tissue around the vessels"),
  bullet("Divided into 3 compartments by fibrous septa: Lateral (artery) | Middle (vein) | Medial (femoral canal)"),
  para("NOTE: The femoral nerve is lateral to the sheath and NOT contained within it."),

  h3("Femoral Canal – Detailed"),
  para("The femoral canal is the most medial and smallest compartment of the femoral sheath."),

  h3("Boundaries of Femoral Ring (Superior Opening)"),
  twoColTable([
    ["Anterior",  "Inguinal ligament (medial part)"],
    ["Posterior", "Pectineus muscle and its fascia"],
    ["Medial",    "Lacunar ligament (Gimbernat's ligament)"],
    ["Lateral",   "Femoral vein"],
  ], ["Boundary", "Structure"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Contents of Femoral Canal"),
  bullet("Deep inguinal lymph node of Cloquet (Rosenmuller's node) – at the top of the canal"),
  bullet("Lymphatic vessels"),
  bullet("Areolar (loose connective) tissue and fat"),

  h3("Function"),
  para("The femoral canal provides dead space that allows the femoral vein to expand during increased venous return (e.g., during exercise or Valsalva)."),

  note("Femoral hernia: increased intra-abdominal pressure forces peritoneal fat/bowel through the femoral ring into the canal. The aberrant obturator artery along the lacunar ligament (corona mortis) must be identified during surgical repair to avoid haemorrhage."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q6  FEMORAL HERNIA
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q6. Why does femoral hernia occur? / Why is it more common in females? (2023, 2021)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 55 | Gray's Anatomy for Students, p 789", { italics: true, color: "546E7A" }),

  h3("Definition"),
  para("A femoral hernia is a protrusion of abdominal contents (usually a peritoneal sac containing omentum or small bowel) through the femoral ring into the femoral canal."),

  h3("Why Femoral Hernia Occurs"),
  bullet("The femoral ring is a naturally weak point in the lower abdominal wall, covered only by the thin femoral septum."),
  bullet("There is no muscular support at the femoral ring – only fascial layers."),
  bullet("Increased intra-abdominal pressure (obesity, straining, pregnancy, chronic cough) forces contents downward."),
  bullet("The hernia descends through the femoral ring → canal → turns upward at the saphenous opening → lies anterior/superior to the inguinal ligament in superficial fascia."),

  h3("Anatomical/Embryological Reasons for Higher Prevalence in Females"),
  bullet("Wider female pelvis (gynecoid type): broader pelvic outlet makes the femoral ring inherently larger and weaker."),
  bullet("Smaller content in inguinal canal: Males have a larger spermatic cord traversing the inguinal canal, which provides extra bracing to the adjacent femoral ring area. In females, the round ligament is much smaller."),
  bullet("Pregnancy: growing uterus repeatedly increases intra-abdominal pressure; pelvic floor is stretched."),
  bullet("Multiparity: repeated pregnancies progressively weaken fascial coverings of the femoral canal boundaries."),
  bullet("Embryological: the gubernaculum in females forms the round ligament of uterus – less bulky than male spermatic cord – leaving the region less reinforced."),

  h3("Comparison: Femoral vs Inguinal Hernia"),
  twoColTable([
    ["Sex",               "Femoral: Female >> Male",            "Inguinal: Male >> Female"],
    ["Position",          "Below and lateral to pubic tubercle", "Above and medial to pubic tubercle"],
    ["Strangulation risk","HIGH (rigid ring)",                   "Lower for indirect; rare for direct"],
    ["Age",               "Middle-aged women",                   "Any age"],
  ], ["Feature", "Femoral Hernia", "Inguinal Hernia"]),
  new Paragraph({ spacing: { before: 120 } }),

  note("Femoral hernias are 4× more common in females and prone to strangulation due to the rigid, unyielding femoral ring. Emergency surgery is often required."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q7  DIRECT vs INDIRECT INGUINAL HERNIA
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q7. Differentiate direct and indirect inguinal hernia. (2020)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 252–254", { italics: true, color: "546E7A" }),

  h3("Definition"),
  para("An inguinal hernia is a protrusion of abdominal contents through the inguinal region. It may be direct (through the posterior wall of inguinal canal) or indirect (through the deep inguinal ring following the inguinal canal)."),

  twoColTable([
    ["Age group prevalence",          "Middle-aged to elderly",                                 "Young adults, children; all ages"],
    ["Sex",                           "Almost exclusively male",                                "Male >> Female"],
    ["Cause",                         "Acquired weakness of posterior wall of inguinal canal",  "Congenital patent processus vaginalis; increased IAP"],
    ["Site of protrusion",            "Through Hesselbach's triangle (posterior wall)",          "Through deep inguinal ring, lateral to inf. epigastric vessels"],
    ["Relation to inf. epigastric a.","Medial",                                                  "Lateral"],
    ["Peritoneal sac",                "No true sac (diffuse bulge)",                             "True peritoneal sac present"],
    ["Direction of descent",          "Straight through wall; rarely enters scrotum",            "Along spermatic cord; can descend into scrotum"],
    ["Controlled by deep ring pressure","No",                                                    "Yes"],
    ["Strangulation",                 "Rare",                                                    "More prone to strangulation"],
    ["Cough impulse",                 "Diffuse, medial",                                         "At deep inguinal ring"],
  ], ["Feature", "Direct Inguinal Hernia", "Indirect Inguinal Hernia"]),
  new Paragraph({ spacing: { before: 160 } }),

  h3("Hesselbach's Triangle (Site of Direct Hernia)"),
  para("Boundaries of Hesselbach's (inguinal) triangle:"),
  bullet("Inferior: Inguinal ligament"),
  bullet("Medial: Lateral border of rectus abdominis"),
  bullet("Lateral: Inferior epigastric vessels"),
  para("Direct hernias pass through this triangle medial to the inferior epigastric artery."),

  note("Indirect hernias are the commonest hernia overall. Direct hernias are due to acquired weakness. Both may coexist (pantaloon hernia). Laparoscopic (TEP/TAPP) repair covers both types simultaneously."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q8  GLUTEUS MAXIMUS
// ════════════════════════════════════════════════════════════════
children.push(
  h1("SECTION: GLUTEAL REGION"),
  h2("Q8. Write a short note on gluteus maximus – nerve supply and action. (2007, 2018)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 77–81 | Gray's Anatomy for Students, p 678–679", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("Gluteus maximus is the largest and heaviest muscle in the body. It forms the bulk of the buttock and is the primary extensor and lateral rotator of the hip."),

  twoColTable([
    ["Origin",          "Ilium (behind posterior gluteal line); dorsal sacrum and coccyx; sacrotuberous ligament; thoracolumbar fascia; fascia over gluteus medius"],
    ["Insertion",       "Upper fibers and superficial lower fibers → iliotibial tract (ITB); Deep lower fibers → gluteal tuberosity of proximal femur"],
    ["Nerve supply",    "Inferior gluteal nerve (L5, S1, S2)"],
    ["Blood supply",    "Superior and inferior gluteal arteries (branches of internal iliac artery)"],
  ], ["Property", "Details"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Actions"),
  bullet("Extension of the hip joint (primary) – crucial for climbing stairs, rising from a chair, running"),
  bullet("Lateral rotation of the femur at the hip joint"),
  bullet("Via iliotibial tract: stabilises the knee in extension and prevents hip adduction"),
  bullet("Stabilises the sacroiliac joint"),

  h3("Relations"),
  para("The gluteus maximus overlies: gluteus medius, piriformis, obturator internus and gemelli, quadratus femoris, the sciatic nerve, and the posterior femoral cutaneous nerve. The sciatic nerve exits the greater sciatic foramen below piriformis and passes deep to the gluteus maximus."),

  note("Best IM injection site = upper outer quadrant of the buttock (avoids sciatic nerve). Used as a gluteal flap in reconstructive surgery. Gluteus maximus paralysis (inferior gluteal nerve injury) causes hip extension weakness; patient leans forward over the hip to compensate."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q9  GLUTEUS MEDIUS
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q9. Origin, insertion, nerve supply and actions of gluteus medius. (2017, 2012)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 77–78 | Gray's Anatomy for Students, p 678", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("Gluteus medius is a fan-shaped muscle deep to the gluteus maximus. It is the primary abductor of the hip and plays a fundamental role in stabilising the pelvis during the stance phase of walking."),

  twoColTable([
    ["Origin",       "Outer surface of ilium between anterior and posterior gluteal lines; gluteal aponeurosis"],
    ["Insertion",    "Lateral surface and superior border of the greater trochanter of femur"],
    ["Nerve supply", "Superior gluteal nerve (L4, L5, S1) – passes between gluteus medius and minimus"],
    ["Blood supply", "Superior gluteal artery (branch of internal iliac artery)"],
  ], ["Property", "Details"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Actions"),
  bullet("Abduction of the hip (primary action)"),
  bullet("Stabilisation of the pelvis during single-leg stance phase of walking – prevents the contralateral pelvis from dropping"),
  bullet("Anterior fibres: medial rotation of the femur"),
  bullet("Posterior fibres: lateral rotation of the femur"),

  h3("Mechanism of Pelvic Stabilisation"),
  para("During the stance phase (weight on one leg), gluteus medius on the weight-bearing side contracts to hold the pelvis horizontal. The greater trochanter acts as the fulcrum; body weight is the load; gluteus medius contraction is the effort. This is the mechanical basis of the Trendelenburg test."),

  note("Gluteus medius weakness → positive Trendelenburg sign and Trendelenburg gait. Superior gluteal nerve injury (during posterior approach to hip) → abductor weakness. Ventrogluteal injection site uses the mid-belly of this muscle (safe from sciatic nerve)."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q10 TRENDELENBURG TEST
// ════════════════════════════════════════════════════════════════
children.push(
  h2("Q10. Write a short note on Trendelenburg test for hip. (2023, 2015, 2008)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 152 | Firestein & Kelley's Textbook of Rheumatology", { italics: true, color: "546E7A" }),

  h3("Introduction"),
  para("The Trendelenburg test is a clinical test that assesses the ability of the hip abductors (primarily gluteus medius and minimus) to stabilise the pelvis on the femur during single-limb weight bearing."),

  h3("Anatomical Basis"),
  para("During the stance phase of walking, when one foot lifts off the ground, the entire body weight is borne on the stance limb. Gluteus medius and minimus on the weight-bearing side contract powerfully to keep the pelvis horizontal, preventing the opposite side from dropping. Any weakness in this mechanism results in the Trendelenburg sign."),

  h3("Procedure"),
  bullet("Patient stands erect, facing the examiner."),
  bullet("Patient raises one foot off the ground (non-weight-bearing leg)."),
  bullet("Examiner observes the pelvis level."),

  h3("Interpretation"),
  twoColTable([
    ["Negative test (Normal)",
     "When right leg is raised, right hip abductors contract → left (non-weight-bearing) side of pelvis ELEVATES slightly. Pelvis tilts toward the raised side = NORMAL."],
    ["Positive test (Abnormal)",
     "When left leg is raised, if right hip abductors are weak → right side of pelvis DROPS. Patient tilts trunk toward the affected (weight-bearing) side = TRENDELENBURG GAIT."],
  ], ["Result", "Description"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Causes of Positive Trendelenburg Test"),
  bullet("Gluteus medius/minimus weakness or paralysis (superior gluteal nerve injury)"),
  bullet("Non-union/malunion of fracture neck of femur (altered mechanics)"),
  bullet("Dislocation of hip (altered fulcrum)"),
  bullet("Coxa vara (reduces lever arm of abductors)"),
  bullet("Perthes disease / AVN (altered femoral head geometry)"),
  bullet("Congenital hip dysplasia"),
  bullet("Poliomyelitis affecting L4, L5, S1 segments"),

  h3("Embryological/Anatomical Basis"),
  para("The superior gluteal nerve (L4, L5, S1) can be injured during a posterior approach to the hip or by pressure during prolonged labour. The muscle acts as a lever: greater trochanter = fulcrum; body weight = load; gluteus medius = effort. Any condition shortening the lever arm or weakening the muscle produces a positive test."),

  note("A mild Trendelenburg gait is occasionally seen in healthy individuals. The test is non-specific – can be positive in primary neurological or muscle disorders as well as hip diseases. A positive test does NOT always mean gluteus medius paralysis alone."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  Q11 DERMATOMES OF LOWER LIMB
// ════════════════════════════════════════════════════════════════
children.push(
  h1("SECTION: SURFACE MARKING"),
  h2("Q11. Draw and label dermatomes of lower limb. (2005)"),
  para("Reference: BDC Human Anatomy, 9th ed., Vol. 2, p 154–155", { italics: true, color: "546E7A" }),

  h3("Definition"),
  para("A dermatome is an area of skin whose sensory innervation is derived from the posterior (dorsal) root of a single spinal nerve segment."),

  h3("Dermatomes of Lower Limb"),
  twoColTable([
    ["L1", "Groin and inguinal region"],
    ["L2", "Anterior and medial upper thigh"],
    ["L3", "Anterior thigh, anterior knee, medial leg"],
    ["L4", "Medial leg, medial foot, big toe (medial side)"],
    ["L5", "Lateral leg, dorsum of foot, medial three toes"],
    ["S1", "Posterior thigh (part), posterior calf, lateral foot, little toe, heel"],
    ["S2", "Posterior thigh and leg (narrow midline strip)"],
    ["S3–S5", "Perianal region, perineum, medial upper thigh (saddle area)"],
  ], ["Spinal Level", "Area Supplied"]),
  new Paragraph({ spacing: { before: 120 } }),

  h3("Diagram (Anterior & Posterior Views – Schematic)"),
  new Paragraph({
    children: [new TextRun({
      text:
"ANTERIOR VIEW                POSTERIOR VIEW\n" +
"─────────────────────────    ─────────────────────────\n" +
"L1 → Groin                  S3–S5 → Perineum / Saddle\n" +
"L2 → Ant. upper thigh       S2 → Post. thigh (strip)\n" +
"L3 → Ant. thigh / knee      S1 → Post. thigh & calf\n" +
"L4 → Medial leg / big toe   L5 → Post. lateral leg\n" +
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      font: "Courier New", size: 18, color: "263238"
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    spacing: { before: 120, after: 120 },
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  h3("Key Clinical Correlation"),
  twoColTable([
    ["L4 lesion", "Loss of sensation medial leg/foot; loss of knee jerk reflex"],
    ["L5 lesion", "Foot drop; loss of sensation dorsum of foot; no specific reflex lost"],
    ["S1 lesion", "Loss of ankle jerk; loss of sensation lateral foot and little toe"],
    ["L3/L4",     "Quadriceps weakness; knee jerk absent"],
    ["L5/S1",     "Hamstring, calf, peroneal weakness"],
  ], ["Level", "Clinical Implication"]),
  new Paragraph({ spacing: { before: 120 } }),

  note("Dermatomes are tested clinically by pinprick (pain) and light touch. Important for diagnosing disc prolapse levels: L4/L5 disc compresses L5 root; L5/S1 disc compresses S1 root."),
  pageBreak(),
);

// ════════════════════════════════════════════════════════════════
//  QUICK REFERENCE / EXAM TIPS PAGE
// ════════════════════════════════════════════════════════════════
children.push(
  h1("EXAM TIPS & QUICK REFERENCE"),

  h2("Mnemonics"),
  twoColTable([
    ["Femoral triangle contents",  "'NAVEL' – Nerve, Artery, Vein, Empty space (canal), Lymphatics (lateral → medial)"],
    ["Femoral ring boundaries",    "'PILM' – Pectineus (posterior), Inguinal lig. (anterior), Lacunar lig. (medial), feMorel vein (lateral)"],
    ["Gluteal injections",         "Upper outer quadrant = safe (avoids sciatic nerve)"],
    ["Trendelenburg positive",     "Pelvis DROPS on NON-weight-bearing side = abductors WEAK on weight-bearing side"],
  ], ["Topic", "Mnemonic / Memory Aid"]),
  new Paragraph({ spacing: { before: 160 } }),

  h2("High-Yield Diagrams to Practice"),
  bullet("Femoral triangle: boundaries, floor, contents with NAVEL labelling"),
  bullet("Femoral sheath: 3 compartments (artery/vein/canal)"),
  bullet("Adductor canal: walls (vastus medialis, adductor longus/magnus, sartorius), contents"),
  bullet("Blood supply to femoral head (medial circumflex femoral artery + retinacular vessels)"),
  bullet("Dermatomes of lower limb (anterior and posterior views)"),
  new Paragraph({ spacing: { before: 120 } }),

  h2("Answer Writing Strategy for 10 Marks"),
  bullet("Introduction (1 mark): brief definition or overview"),
  bullet("Main anatomy – boundaries/origin/insertion/contents (4 marks)"),
  bullet("Labelled diagram (2 marks)"),
  bullet("Applied anatomy / clinical significance (2 marks)"),
  bullet("Summary or conclusion (1 mark)"),
  new Paragraph({ spacing: { before: 120 } }),

  h2("References"),
  para("1. BDC Human Anatomy, 9th Edition, Volume 2 – B.D. Chaurasia"),
  para("2. Gray's Anatomy for Students, South Asia Edition – Drake, Vogl & Mitchell"),
  para("3. Thieme Atlas of Anatomy – General Anatomy and Musculoskeletal System"),
  para("4. Firestein & Kelley's Textbook of Rheumatology – Hip examination section"),
);

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