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FMT QUESTION PAPER - MODEL ANSWERS
10 MARKS
1. MEDICAL NEGLIGENCE (MALPRACTICE)
Definition:
Professional Negligence is defined as "Want of reasonable care and skill or willful negligence on the part of the medical practitioner while treating a patient, resulting in bodily injury, ill health or death."
Negligence was first defined by Justice Baron Alderson (1856): "The omission to do something which a reasonable man could do, or doing something which a prudent and reasonable man could not do."
Lord Wright (1934) laid down 4 essential elements (the 4 Ds):
- Duty - The doctor owes a duty of care to the patient (doctor-patient relationship established)
- Dereliction (Breach) - Breach of that duty by omission or commission
- Direct causation - Direct/proximate causal link between breach and damage
- Damage - The patient suffered actual damage/injury
Types of Medical Negligence:
A. Civil Negligence (Tort):
- Most common form
- Patient sues for monetary compensation
- Standard: Balance of probabilities
- Governed by Consumer Protection Act (CPA) 1986 in India - doctors' services are covered under "services" definition
B. Criminal Negligence:
- Gross, reckless, and wanton disregard for human life
- Punishable under Sec. 304-A IPC (culpable homicide not amounting to murder)
- Standard: Beyond reasonable doubt
- Examples: administering wrong drug, leaving instruments in abdomen, operating on wrong limb
Landmark Cases:
- Bolam test (1957): A doctor is not negligent if he acts in accordance with a practice accepted as proper by a responsible body of medical men. ("Standard of the ordinary skilled man exercising and professing to have that special skill")
- Jacob Mathew vs. State of Punjab (2005): Supreme Court of India laid down guidelines - a doctor cannot be prosecuted criminally unless there is gross negligence. Prior consultation with an independent expert required before arresting a doctor.
- Hatcher vs. Black & Others (1954): Lord Denning compared negligence to a dagger that wounds the doctor's reputation.
Specific Situations:
- Duty to choose patient: A doctor has the right to refuse any patient before accepting. Once accepted, duty of care begins.
- Emergency duty: Morally and ethically bound to provide best possible help to save life, even without formal doctor-patient relationship. If patient dies in such circumstances, doctor cannot be sued.
- Res Ipsa Loquitur ("the thing speaks for itself"): Doctrine applied when negligence is self-evident - e.g., swab left inside abdomen, operation on wrong limb. No expert opinion needed; burden of proof shifts to the doctor.
Defences against negligence:
- Volenti non fit injuria - patient consented to the risk
- Error of judgment - one among acceptable alternatives was chosen
- Contributory negligence - patient's own negligence contributed
- Following standard textbook/protocol
- No doctor-patient relationship established
Prevention of Medical Negligence:
- Maintain proper records and consent forms
- Informed consent before procedures
- Do not exceed competence
- Refer when in doubt
- Keep updated with current medical knowledge
(P C Dikshit Textbook of Forensic Medicine and Toxicology)
2. AUTOEROTIC SEXUAL ASPHYXIA
Definition:
Sexual asphyxias are asphyxial deaths principally due to hanging in which the asphyxia is intentionally induced to enhance sexual arousal produced by masturbation. Also called "Scarfing," "Terminal Sex," or "Asphyxiophilia."
Mechanism:
- The individual uses transitory anoxia produced by a noose to intensify sexual gratification produced by masturbation
- Impaired circulation leads to impaired consciousness
- This impaired consciousness causes hallucinations and feelings of erotic rapture
- The degree of asphyxia is controlled by mechanical means (by extending/flexing arms/legs)
- A failure of the mechanism accidentally causes death
Victim Profile:
- Virtually always male (>99% male victims)
- Homosexual tendency may be present
- Abnormal sexual behaviour such as masochism, transvestism may be associated
- Usually occurs in the victim's own house (bedroom or attic)
- Repetitive pattern of behaviour
Scene Findings (Crucial for Differentiation from Suicide):
- Incomplete hanging - feet on ground (can relieve pressure by standing straighter)
- A stool or chair found near the hanging victim
- Evidence of previous episodes - old scars on the neck
- Victim is usually naked or partly naked
- Padding between ligature and neck (pad/cloth between rope and skin to prevent visible marks)
- Erotic or pornographic photographs/literature at scene
- Articles of female clothing (transvestism)
- A mirror placed opposite the individual
- Evidence of recent ejaculation (seminal stains)
- No suicidal note
- Electrical stimulation devices (low voltage stimulation of genitalia) may be present
Other Methods Used:
- Plastic bags over the head to induce partial anoxia
- Inhalation of anaesthetics or narcotic vapours
- Inhalation of carbon tetrachloride, bichloroethane, petroleum products (glue sniffing)
Cause of Death:
Accidental death due to failure of the mechanism of neck constriction; death is unintentional.
Autopsy Findings:
- Asphyxial signs: petechiae, cyanosis, conjunctival hemorrhages
- Ligature mark (usually padded, hence incomplete mark)
- No features of suicidal intent
- No features of homicide (no self-defence injuries, no signs of struggle)
(P C Dikshit Textbook of Forensic Medicine and Toxicology)
5 MARKS
3. PUTREFACTION
Definition:
Putrefaction is the final stage following death in which destruction of soft tissues of the body occurs by bacterial and enzymatic action. The terms decomposition and putrefaction are used synonymously.
Timing:
- Usually follows the disappearance of rigor mortis
- During hot season, may commence before rigor mortis has completely disappeared from lower extremities
- Begins immediately after death at the cellular level (not grossly evident initially)
Mechanism:
- Gram-negative organisms from the alimentary canal enter tissues shortly after death and through the respiratory tract or skin wounds
- Bacteria multiply using tissue carbohydrates and proteins; peak reached in all body parts within 24-30 hours
- Fall in O2 and rise in H+ after death favours bacterial growth
- Absence of protective agencies allows spread through blood vessels
- Chief destructive agent: Clostridium welchii (causes haemolysis, liquefaction of clots, tissue disintegration, gas formation)
- Lecithinase produced by Cl. welchii hydrolyses lecithin in all cell membranes - causes postmortem hemolysis
- Other organisms: Streptococci, Staphylococci, Bacteroids, B. proteus, B. coli
Stages/Signs of Putrefaction:
| Stage | Signs |
|---|
| Early (1-2 days) | Greenish discolouration of right iliac fossa (due to action of H2S on Hb → sulphaemoglobin) |
| 3-4 days | Greenish discolouration spreads over abdomen; marbling of skin (due to haemolysis) |
| 5-6 days | Bloating of face, abdomen (gas formation); blebs/bullae on skin |
| 7-10 days | Blackish green discolouration; body swollen; foul odour |
| 2-4 weeks | Skin peeling; liquefaction of organs; skin slippage |
| Months | Skeletonisation |
Gases of Putrefaction:
- Hydrogen sulphide (H2S) - characteristic foul odour
- Carbon dioxide, methane, ammonia, nitrogen
Factors Accelerating Putrefaction:
- Heat (optimal: 21-38°C)
- Moisture
- Air (surface bodies decompose faster)
- Obesity
- Traumatised tissue, infections, septicaemia
- Shallow burial
Factors Retarding Putrefaction:
- Cold (below 0°C halts putrefaction)
- Dryness (leads to mummification)
- Deep burial
- Submersion in water (initially retards, then accelerates)
- Antiseptics/embalming
- Antimicrobials given before death
(The Essentials of Forensic Medicine and Toxicology, 36th ed., 2026)
4. COCAINE
Source: Erythroxylon coca (leaves); active alkaloid - cocaine hydrochloride
Street names: Coke, snow, crack, Charlie, blow
Routes of Administration:
- Intranasal snorting (most common)
- Intravenous injection ("shooting up")
- Smoking as "crack" cocaine (free base form)
- Oral (rare)
Mechanism of Action:
- Blocks reuptake of dopamine, serotonin, and norepinephrine (monoamine reuptake inhibitor)
- Local anaesthetic - blocks Na+ channels
- Powerful CNS stimulant and euphorigenic
Acute Toxicity - Clinical Features:
CNS: Euphoria, excitement, grandiosity, restlessness, insomnia, then headache, vertigo, tremors, convulsions, respiratory failure
CVS: Tachycardia, hypertension, coronary artery spasm, myocardial infarction, arrhythmias, sudden cardiac death
Fatal dose: ~1.2 g (IV); variable by route
Chronic Poisoning (Cocainism/Cocainomania):
- Anorexia, loss of weight, weakness, tremors
- Impotence, moral deterioration, insanity
- Magnan's symptom (Cocaine bugs/Formication): Sensation of grains of sand under skin or small insects creeping on skin - most characteristic tactile hallucination
- Tongue and teeth black (in cocaine eaters)
- Nasal septal ulceration/perforation (snorters)
- Women: Increased erotic tension, nymphomania
- Men: Sexual perversions, mainly homosexuality
- Delusions of persecution, visual and tactile hallucinations
Post-mortem Findings:
- Nasal septum perforation
- Cardiac hypertrophy
- Pulmonary oedema
- Chemical analysis of blood/urine for benzoylecgonine (metabolite)
Treatment:
- Benzodiazepines for agitation/seizures
- Cooling for hyperthermia
- Drugs to AVOID:
- Beta-blockers (propranolol) - cause paradoxical hypertension/coronary spasm
- Haloperidol/phenothiazines - hyperpyrexia, convulsions
- Lignocaine/quinidine - arrhythmias
- Dantrolene - cardiac insufficiency
- Bromocriptine 0.625 mg 6-hourly reduces craving and counters withdrawal
(Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology)
5. GUSTAFSON'S METHOD OF AGE ESTIMATION
Gustafson (1950) proposed a method for age estimation from teeth (dental age estimation) - most reliable method especially when other skeletal methods are unreliable.
Six Criteria (APART + T) - each scored 0-3:
| # | Criterion | Description | Score |
|---|
| 1 | A - Attrition | Wearing away of crown (0=none, 1=enamel only, 2=dentin involved, 3=pulp exposed) | 0-3 |
| 2 | P - Periodontosis | Resorption of alveolar bone/periodontal membrane changes | 0-3 |
| 3 | A - Apical root resorption | Shortening of root tip | 0-3 |
| 4 | R - Root dentin translucency | Translucency starts at apex, progresses upward with age | 0-3 |
| 5 | T - Tooth root transparency (Secondary dentin) | Deposition of secondary dentin in pulp cavity (narrowing of pulp canal) | 0-3 |
| 6 | C - Cementum apposition | Deposition of cementum around root apex | 0-3 |
Formula:
Age = 11.43 + 4.56 × (Total Score)
Total Score Range: 0-18
Age Estimation Range: ±3.6 years accuracy
Most Reliable Indicators by Age:
- Young adults: Attrition most useful
- Older adults: Root dentin translucency most reliable
Advantages:
- Can be used even with fragmentary remains
- Teeth resistant to putrefaction, fire, trauma
- Applicable from adolescence to old age
- Most accurate among dental methods
Modifications by Johanson (1971): Used 7 criteria with half-points for better accuracy.
Mnemonic: "PARTAC" - Periodontosis, Attrition, Root translucency, Tooth (secondary dentin), Apical resorption, Cementum
6. SIDS (Sudden Infant Death Syndrome)
Definition (NICHD): "The sudden death of an infant under 1 year of age which remains unexplained after a thorough case investigation, including performance of a complete autopsy, examination of the death scene, and review of the clinical history." (Also known as "crib death" or "cot death")
Epidemiology:
- Leading cause of death between ages 1 month and 1 year in developed countries
- 90% of cases: infant younger than 6 months
- Peak age: 2-4 months
- More common in males
- Winter months more common
- Usually dies while asleep
- SIDS in a previous sibling: 5-fold relative risk
Risk Factors:
Parental:
- Young maternal age (<20 years)
- Maternal smoking during pregnancy
- Drug use (maternal opiate/cocaine use, paternal marijuana)
- Short inter-gestational intervals
- Late or no prenatal care
- Low socioeconomic group
Infant:
- Brainstem abnormalities (delayed development of arousal and cardiorespiratory control)
- Prematurity and/or low birth weight
- Male sex
- Product of multiple birth
Environmental:
- Prone sleeping position (most important modifiable risk factor)
- Soft sleeping surface
- Hyperthermia (overheating)
- Bed-sharing (co-sleeping)
- Second-hand smoke exposure
Pathophysiology (Triple Risk Model):
- Vulnerable infant (intrinsic susceptibility - brainstem serotonin receptor abnormality)
- Critical developmental period (2-4 months - transitional arousal period)
- Exogenous stressor (prone position, soft bedding, overheating)
Autopsy Findings (non-specific):
- Petechial haemorrhages on pleural and pericardial surfaces (most constant finding)
- Pulmonary oedema
- Thymic petechiae
- Mild bronchopneumonia/laryngeal inflammation
- No definitive cause of death identified
Prevention - "Back to Sleep" Campaign:
- Supine sleeping position
- Firm flat sleeping surface
- Avoid soft bedding, pillows
- Room temperature comfortable
- Avoid smoking during pregnancy
- Breastfeeding encouraged
(Robbins & Kumar Basic Pathology)
7. CIVIL RESPONSIBILITIES OF A MENTALLY ILL PERSON
Under Indian law (Mental Healthcare Act, 2017 and Indian Contract Act), mental illness affects civil legal capacity in the following ways:
1. Contractual Capacity (Section 11 & 12, Indian Contract Act, 1872):
- Contracts made by a person of unsound mind are void ab initio
- A person who is occasionally of sound mind may contract during lucid intervals
- Burden of proof: The party seeking to avoid contract must prove unsoundness at the time of contract
2. Marriage:
- Under the Hindu Marriage Act, 1955: Marriage is voidable if one party was of unsound mind at the time of marriage (Sec. 5 & 12)
- Under Special Marriage Act: Any mental illness/unsoundness that prevents valid consent makes marriage void
3. Testamentary Capacity (Making a Will):
- A Will made by a person of unsound mind is invalid (Sec. 59, Indian Succession Act)
- "Lucid interval" doctrine: A Will made during a lucid interval is valid
- Test of testamentary capacity: Person must know the nature of the act, extent of property, persons naturally expected to benefit, and be free from delusion
4. Guardianship:
- Courts may appoint a guardian for a person with mental illness
- National Trust Act 1999 covers guardianship for autism, cerebral palsy, mental retardation, multiple disabilities
5. Property Rights:
- Manager may be appointed by court to manage estate (Committee of the Person/Estate under old MHA 1987)
- Under MHCA 2017: Nominated Representative concept replaces committee system
6. Driving License:
- Mental illness is a disqualification for obtaining a driving license
7. Right to Vote:
- Persons of unsound mind are disqualified from voting (Representation of People's Act)
8. Witness:
- A mentally ill person may give evidence if the court is satisfied they understand the questions and can give rational answers (Sec. 118, Indian Evidence Act)
8. MTP (MEDICAL TERMINATION OF PREGNANCY) AND RECENT AMENDMENTS
MTP Act, 1971 - Governs termination of pregnancy in India.
Original Provisions (1971):
- Termination allowed up to 20 weeks
- By a Registered Medical Practitioner (RMP)
- In a Government hospital or approved private facility
- Grounds for termination:
- Risk to life or grave injury to physical/mental health of the woman
- Substantial risk of serious physical/mental handicap in the child
- Pregnancy due to rape (presumed to cause grave mental injury)
- Failure of contraceptive device (for married couple)
MTP (Amendment) Act 2021 - Key Changes:
| Aspect | Before Amendment (1971) | After Amendment (2021) |
|---|
| Upper gestation limit | 20 weeks | 24 weeks (for special categories) |
| Opinion required up to 12 weeks | 1 RMP | 1 RMP (unchanged) |
| Opinion required 12-20 weeks | 2 RMPs | 1 RMP |
| Opinion required 20-24 weeks | Not allowed | 2 RMPs (special category) |
| Beyond 24 weeks | Not allowed | Medical Board only (for fetal anomalies) |
Special Categories Eligible for 24-Week Limit:
- Survivors of sexual assault or rape or incest
- Minors
- Change of marital status during ongoing pregnancy (widowhood, divorce)
- Women with physical disabilities (50% disability as per RCI Act)
- Mentally ill women (including intellectual disability)
- Fetal malformation incompatible with life/substantial fetal abnormality
- Women in humanitarian settings/disasters/emergencies
Medical Board (for >24 weeks):
- Each state/UT must constitute a Medical Board
- Comprises: Gynaecologist, Paediatrician, Radiologist/Sonologist, and other members as prescribed
- Decision must be given within 3 days of reference
Other Important Provisions:
- Unmarried women included: Previously only married women could use contraceptive failure as ground; 2021 amendment extends to "any woman or her partner" (unmarried women included)
- Confidentiality: Details of the woman cannot be disclosed except to authorized persons
- Name and privacy protected
Mnemonic for Grounds: "RCFM" - Rape, Contraceptive failure, Fetal anomaly, Mother's health risk
9. DACTYLOGRAPHY
Definition:
Dactylography (from Greek dactylos = finger) is the scientific study of fingerprints for the purpose of identification. Also called Dermatoglyphics (scientific term), Fingerprint science, or Dactiloscopy.
Historical Background:
- Francis Galton (1892): First to classify and study fingerprints scientifically; first to prove permanence and uniqueness
- Sir William Herschel (1858): First to use fingerprints for identification in India (Bengal, British India)
- Henry Faulds (1880): First to suggest fingerprints could identify criminals
- Edward Henry (1901): Developed the Henry Classification System (still used); established Scotland Yard fingerprint bureau
- Juan Vucetich (1892): Developed fingerprint classification (South America)
Properties of Fingerprints (3 Ps):
- Permanence - Fingerprint ridges are formed at 12th week of fetal life and remain unchanged until decomposition after death
- Uniqueness (Individuality) - No two individuals have identical fingerprints (even identical twins); probability of two identical prints: 1 in 64 billion
- Practicability - Can be easily taken and classified
Basis of Fingerprints:
- Formed by dermal papillae in dermis and ridges of epidermis (friction ridges)
- Papillary ridges are permanent - burn/injury damages but ridges regenerate (Eguchi's case - skin grafted after deliberate destruction still shows original pattern)
Types of Fingerprints:
- Plastic/Three-dimensional prints: Left in soft substances (wax, clay, putty, butter)
- Visible/Patent prints: Left by fingers contaminated with coloured substance (blood, grease, ink)
- Latent prints: Invisible impressions left by sweat; require development by:
- Dusting with aluminium powder (light surfaces), carbon black (dark surfaces)
- Chemical development: Ninhydrin (reacts with amino acids), silver nitrate
- Iodine fuming
Classification (Galton's 3 Types → Henry's 5 Types):
| Type | Description | Frequency |
|---|
| Arch | Ridges enter one side, rise, and exit the other; no delta | 5% |
| Loop (Ulnar) | Opens toward ulnar side (little finger) | 60-65% |
| Loop (Radial) | Opens toward radial side (thumb) | 5% |
| Whorl | Circular/spiral ridges; 2 deltas | 30% |
| Composite | Combination of above | Rare |
Delta: Point of divergence of ridges; triangular area where three ridges meet.
Medicolegal Importance:
- Identification of criminals (AFIS - Automated Fingerprint Identification System)
- Identification of unknown dead bodies
- Identification of victims of mass disasters (MCI)
- Identification of unknown persons (amnesia, unconscious)
- Thumb impression on legal documents
- Detection of forgery of thumb impressions
Limitation: Fingerprints cannot determine race, sex, or age.
10. ARSENIC POISONING
Source: Arsenic trioxide (white arsenic, As2O3); Paris green (copper arsenite), Fowler's solution (liquor arsenicalis - 1% potassium arsenite)
Routes: Oral ingestion (most common), inhalation of arsenic gas, skin absorption, rectal/vaginal introduction
Fatal Dose: Arsenic trioxide - 180 mg (range 130-300 mg)
Fatal Period: 12-48 hours (can be fatal in 2-3 hours)
Mechanism of Toxicity:
- Reversible combination with sulphydryl (-SH) groups in tissue proteins
- Interference with enzyme systems essential for cellular metabolism
- Capillary dilation and damage (capillary poison)
- Fatty degeneration of liver
- Hyperaemia and haemorrhages in intestine
- Renal tubular necrosis
- Peripheral axonal neuropathy (axis cylinder disintegration)
Acute Arsenic Poisoning - Clinical Features (within 30 minutes of ingestion):
- Metallic taste, slight garlicky odour in breath, xerostomia, dysphagia
- Severe nausea, vomiting, colicky abdominal pain
- Profuse diarrhoea with rice-water stools (due to vasodilation with transudation into bowel lumen)
- Intense thirst; cold, clammy skin
- Hyperpyrexia, acute haemolysis
- Periorbital oedema, skeletal muscle cramping
- Oliguria, proteinuria, haematuria
- Cardiac manifestations: Cardiomyopathy, prolonged QT interval, ST-T changes
- Hepatic and renal failure (if dose not immediately fatal)
- Convulsions, encephalopathy, death from irreversible circulatory insufficiency
Chronic Arsenic Poisoning (Arsenicism):
- Skin changes: Raindrop pigmentation (hyperpigmented spots on white background), keratosis of palms and soles, Bowen's disease
- Mee's lines: White transverse lines on nail plate (1-2 mm wide, 1-2 mm from lunula; seen 2-4 weeks after ingestion)
- Aldrich-Mee's lines are pathognomonic
- Hair loss (alopecia)
- Sensorimotor peripheral neuropathy ("glove and stocking" distribution)
- Peripheral vascular disease (Blackfoot disease in Taiwan)
- Skin, lung, and bladder cancer (carcinogen)
- Arsenic has predilection for keratin (high concentration in hair, nails, skin)
Post-mortem Findings:
- Gastroenteritis pattern
- Fatty degeneration of liver
- Renal tubular necrosis
- Well-preserved body (arsenic retards putrefaction)
- Hair analysis (Reinsch test, Marsh's test positive)
Forensic Tests:
- Marsh's test (most reliable) - arsenic deposits as shiny black mirror
- Reinsch test - arsenic deposits on copper strip
- Gutzeit test
- Atomic absorption spectrophotometry (gold standard)
Treatment:
- Gastric lavage with water
- BAL (Dimercaprol/British Anti-Lewisite) - chelating agent; forms non-toxic complex with arsenic
- DMSA (Succimer) - oral chelator, preferred
- Supportive care
(P C Dikshit Textbook of Forensic Medicine and Toxicology)
3 MARKS
11. RUN AMOK (AMOK)
- A condition of sudden homicidal frenzy seen originally among Malay people (Malaysia, Indonesia)
- The individual suddenly starts running about indiscriminately attacking anyone he meets with weapons
- The person has no recollection of events afterwards (amnesia for the episode)
- Classification: Medically classified as a dissociative disorder or culture-bound syndrome (ICD-10: F44)
- In Malay language "amok" = engaging furiously in battle
- Medicolegal importance: Persons committing acts during amok state may be held partially or fully non-responsible (diminished responsibility)
- After the frenzy, the individual may commit suicide or is overpowered
Features:
- Prodrome: brooding, social withdrawal
- Acute phase: Sudden outburst of violent homicidal behaviour
- Post-episode: Exhaustion, amnesia for the episode
- Usually triggered by frustration, humiliation, or perceived insult
12. PHOSSY JAW (Phosphorus Necrosis of Jaw)
- An occupational disease caused by chronic phosphorus poisoning - specifically white/yellow phosphorus
- Historically seen in match factory workers (banned after 1906 Berne Convention when red phosphorus replaced white)
- Still seen with exposure to rodenticides, munitions, and fireworks containing white phosphorus
Pathology:
- White phosphorus vapours inhaled → periodontal disease
- Periostitis of the jaw (mandible more than maxilla), progressing to osteomyelitis and necrosis
- The jaw becomes soft, swollen, painful
- Affected bone gives off faint greenish-white phosphorescence in dark (characteristic sign)
- Disfiguring - jaw may become grossly distorted
- Fatal if spreads to vital organs; may cause brain abscess if extends intracranially
Stages:
- Toothache, gum inflammation
- Alveolar bone absorption
- Periostitis, osteomyelitis
- Necrotic bone - sequestrum formation
- Pathological fracture and disfigurement
Modern Relevance: Bisphosphonate-related osteonecrosis of jaw (BRONJ) is the modern analogue seen with medications like alendronate.
13. COUP AND CONTRECOUP INJURY
Definitions:
- Coup injury: Brain injury occurring at the site of impact (directly beneath the blow)
- Contrecoup injury: Brain injury occurring at the site opposite to the point of impact
Mechanism:
- When a moving head hits a fixed object (fall): Contrecoup > Coup (brain lags behind moving skull, hits opposite pole)
- When a stationary head is hit by a moving object: Coup > Contrecoup
- Due to: (1) Pressure waves generated at impact, (2) Movement of brain within skull (translational/rotational acceleration), (3) Negative pressure (cavitation) at contrecoup site
Common Pattern:
- Fall backward (occiput hits ground): Bifrontal contrecoup injuries (most common)
- Fall forward: Occipital contrecoup
Types of Brain Injury:
- Contusions, haemorrhage, laceration at coup and/or contrecoup site
- Extradural haematoma (EDH): usually coup side (middle meningeal artery tear)
- Subdural haematoma (SDH): often contrecoup or rotational injury (bridging veins)
Medicolegal Importance:
- Presence of contrecoup injury indicates the head was moving at impact (fall) rather than stationary head being struck (assault)
- Helps determine mechanism of injury
14. HESITATION CUTS (Tentative Cuts)
- Linear incised wounds made before the fatal wound in suicidal cases
- Found at the same site as the main wound; usually parallel to each other and the main wound
- Characteristics:
- Multiple, parallel, superficial incisions
- Shorter than the fatal wound
- Usually located on wrists (ventral surface), throat, or forearms
- Do not penetrate deeply - involve only skin and superficial fascia
- Often overlying the main fatal wound or adjacent to it
- Dried scabs/healed marks indicate they were made earlier
- Old healed scars from previous attempts may also be present
Medicolegal Significance:
- Strong indicator of suicidal intent - reflects the victim's hesitation before the decisive act
- They are virtually never found in homicidal wounds
- The absence of hesitation cuts does NOT exclude suicide
15. SUMMONS
A legal document issued by a court directing a person (accused, witness, or expert) to appear before it.
Types in Indian Law:
- Summons to witness (Sec. 61, CrPC): Directs a person to appear as witness
- Summons to accused (Sec. 204, CrPC): Issued in summons cases (minor offences)
- Summons to produce a document (Sec. 91, CrPC)
Summons Case vs. Warrant Case:
- Summons case: Offence punishable with up to 2 years imprisonment
- Warrant case: Offence punishable with >2 years imprisonment
Service of Summons:
- Served personally by a police officer or court officer
- If person not found, may be given to adult male member of family
- If service not possible, affixed to house
- Must be in duplicate; recipient must sign one copy
Failure to Appear:
- Can be treated as contempt of court
- A bailable or non-bailable warrant may then be issued
For Doctors (Expert Witness):
- On receiving summons, doctor must attend court
- Cannot refuse unless valid reason given
- Should bring original records/documents as specified
16. DYING DECLARATION
Definition:
A statement made by a person who is dying and who is conscious of his impending death, regarding the cause of his/her death or the circumstances surrounding it.
Legal Basis:
- Section 32(1) of Indian Evidence Act, 1872
- Principle: "Nemo moriturus praesumitur mentire" - "A man will not meet his Maker with a lie in his mouth"
- Not subjected to cross-examination (declarant is dead)
Types (Forms) of Dying Declaration:
- Written - written by the patient themselves or by another at their dictation
- Oral - spoken declaration recorded by physician, magistrate, or any reliable person
- Gestural - signs, nods, or other gestures in response to questions (if unable to speak)
- Thumb impression - signed by thumb impression
Who Can Record:
- Best: Executive Magistrate (preferred)
- Judicial Magistrate
- Doctor (when magistrate not available)
- Any person present (when imminent death is likely before a magistrate arrives)
Legal Requirements/Validity:
- Declarant must be in fit mental state to make declaration
- Doctor must certify mental fitness before recording
- Must be voluntarily made (no coercion)
- Declarant should believe death is imminent (proximity to death)
- Need NOT be corroborated - can be sole basis for conviction
Important Points:
- Does NOT require oath
- No need for presence of accused
- Multiple dying declarations: All are admissible; court decides consistency
- If declarant recovers - the declaration becomes irrelevant (hearsay rule)
- Must relate to cause of death or circumstances of the transaction resulting in death
17. FRACTURES OF HYOID BONE WITH DIAGRAMS
The hyoid bone (U-shaped bone at the base of tongue, between C3-C4) is the only bone in the body with no bony articulation. It is suspended by muscles and ligaments.
Parts of Hyoid Bone:
[Body]
/ \
[Lesser horn] [Lesser horn]
[Greater horn] [Greater horn]
___________
| Body |
/| |\
/ | | \
Lesser Lesser
cornu cornu
| |
Greater Greater
cornu cornu
When Does Hyoid Fracture Occur?
- Fracture is rare in young (bone is cartilaginous and elastic up to 30-40 years)
- Fracture occurs most commonly after 40 years (bone becomes ossified/brittle)
Significance in Forensic Medicine:
Hyoid fracture is a specific indicator of manual strangulation (throttling)
Types of Fractures:
- Greater cornu fracture - Most common in strangulation; bilateral compression causes lateral to medial fracture of greater horns
- Body fracture - Less common
- Lesser cornu fracture - Rare
Fracture in Different Types of Asphyxia:
| Type | Hyoid Fracture |
|---|
| Manual strangulation (throttling) | 33-40% cases (most common) |
| Ligature strangulation | Less common |
| Hanging | Less common (unless judicial hanging with drop) |
| Burking/smothering | Not seen |
Diagram of Fracture Sites:
Body
_______
| |
LH----+ +----LH LH = Lesser Horn/Cornu
|_______|
/ \
GH* *GH GH = Greater Horn/Cornu
* = Common fracture sites (bilateral)
Cause of Fracture in Strangulation:
- Hands grip the neck
- Greater cornua are compressed medially against the spine
- Fracture occurs at the junction of body and greater cornu
- Fracture usually associated with haemorrhage at fracture site
Note: Absence of hyoid fracture does NOT exclude strangulation.
18. TYPES OF HYMEN
The hymen is a thin membrane of fibro-elastic tissue partially occluding the vaginal orifice. It is a remnant of the urogenital sinus.
Normal Types of Hymen:
1. ANNULAR (Circular) 2. CRESCENTIC (Semilunar)
___________ _________
| O | | _ |
| (hole) | | ( ) |
|___________| |_________|
Most common type Opening at anterior
3. CRIBRIFORM 4. SEPTATE
___________ _________
| o o o | | | o | |
| o o o | | | | |
|___________| |_________|
Multiple small holes Band crosses opening
5. IMPERFORATE 6. FIMBRIATED (Denticulate)
___________ _________
| | |~~~~~~~~~|
| No opening| | scalloped edges
|___________| |_________|
7. SLEEVE/TUBULAR 8. BIFENESTRATE/BIFORAMINATE
(Tubiform) Two openings
Classification:
| Type | Description | Medicolegal Importance |
|---|
| Annular (Ring) | Opening in centre, membrane surrounds completely | Most common; can accommodate |
| Crescentic | Opening anteriorly, membrane posteriorly | Very common; elastic |
| Cribriform | Multiple small perforations | May impede menstruation |
| Septate | Band dividing opening into two | Rarely torn in intercourse |
| Imperforate | No opening at all | Hematocolpos at puberty - medical emergency |
| Fimbriated | Irregular, fringe-like edges | Difficult to assess integrity |
| Sleeve/Tubular | Tube-like projection | Allows even delivery |
| Bifenestrate | Two separate openings | Can be confused with old laceration |
Hymenal Tears (Forensic Significance):
- Fresh tear: Bleeds, red, swollen edges
- Old tear: Complete, healed, smooth edges, reaching base
- Old scars/incomplete tears are not reliable indicators of virginity
- Carunculae myrtiformes: Remnants of hymen after defloration/delivery
19. JOULE'S BURN (Crocodile Burn / Contact Burn)
Definition:
A specific type of electrical burn produced at the points of entry and exit of electrical current through the body.
Also called: Electrothermal burn, contact burn, Joule burn (named after James Prescott Joule, who described electrical heating effect)
Features of Joule's Burn (Entry Wound):
- Shape: Round or oval, punched-out appearance
- Central area: Depressed, pale/grey-white or yellowish charred centre
- Margins: Raised, hyperaemic, reddened border ("heaped up" edges like a crater rim)
- Surface: Dried, hard, parchment-like
- Crocodile skin appearance - alternating ridges and furrows on the burnt surface (hence "crocodile burn")
- Surrounding area: Redness, vesicles
- Size usually small (0.5-2 cm)
Entry vs. Exit Wound:
| Feature | Entry Wound | Exit Wound |
|---|
| Appearance | Punched-out, depressed centre | Usually explosive, more irregular |
| Size | Usually smaller | Usually larger, irregular |
| Borders | Raised, indurated | Blown-out, everted |
Histological Features:
- "Comet cells" or "streaming" of nuclei due to electrical force
- Palisading of nuclei
- No inflammatory reaction (death is instantaneous)
- Vacuolation of epidermal cells
Medicolegal Importance:
- Confirms death by electrocution
- Helps determine entry and exit points
- Helps reconstruct the incident
- May be absent in high voltage cases (flash burns predominate)
20. BANSDOLA
Definition:
A form of mechanical asphyxia and a method of torture/homicide using a bamboo lever device, used in India.
Mechanism:
- A bamboo stick (or heavy pole) is placed across the victim's neck while the victim is lying on the ground
- The executioner/assailant stands or sits on both ends of the bamboo pole, pressing it down forcibly onto the neck
- This causes compression of the neck structures leading to:
- Compression of trachea and major vessels
- Asphyxia due to obstruction of airway
- Venous obstruction leading to cerebral congestion
- Possible fracture of cervical vertebrae
- Occasionally cervical cord injury
Historical/Regional Context:
- Used as a method of execution in certain parts of India
- Occasionally used in homicidal cases (disguised as accident or suicide)
- Also encountered in accidental cases (vehicle accidents with rods)
Post-mortem Findings:
- Signs of asphyxia (petechiae, cyanosis, congestion)
- Broad, horizontal ligature mark or compression mark across the neck (differs from narrow ligature mark)
- Fracture of thyroid cartilage and/or cervical vertebrae
- Bruising and haemorrhage in neck muscles
- No signs of struggle if victim was pinned down
Differentiation from Throttling:
- Bansdola produces a broad compression mark
- No finger marks or nail abrasions (unlike throttling)
- Evidence of the bamboo/stick may be found at scene
Sources: P C Dikshit Textbook of Forensic Medicine and Toxicology; The Essentials of Forensic Medicine and Toxicology (36th ed., 2026); Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology; Robbins & Kumar Basic PathologyAll 20 topics from your FMT Question Paper have been covered above. Here is a quick navigation guide:
QUICK REFERENCE INDEX
| Topic | Marks | Answer Location |
|---|
| Medical Negligence | 10 | Answer #1 - includes 4 Ds, Bolam test, Jacob Mathew case, Res Ipsa Loquitur |
| Autoerotic Sexual Asphyxia | 10 | Answer #2 - scene findings, victim profile, mechanism |
| Putrefaction | 5 | Answer #3 - mechanism, stages, factors |
| Cocaine | 5 | Answer #4 - Magnan's symptom, Mee's lines, drugs to avoid |
| Gustafson's Method | 5 | Answer #5 - 6 criteria (APARTC), formula |
| SIDS | 5 | Answer #6 - Triple Risk Model, risk factors, Back to Sleep |
| Civil Responsibilities of Mentally Ill | 5 | Answer #7 - contracts, will, marriage, guardianship |
| MTP & Recent Amendments | 5 | Answer #8 - 2021 amendments, 24-week limit, Medical Board |
| Dactylography | 5 | Answer #9 - Galton's 3 types, Henry's 5 types, 3 Ps |
| Arsenic Poisoning | 5 | Answer #10 - rice-water stools, Mee's lines, Marsh's test, BAL |
| Run Amok | 3 | Answer #11 - dissociative disorder, cultural context |
| Phossy Jaw | 3 | Answer #12 - white phosphorus, jaw necrosis, phosphorescence |
| Coup & Contrecoup | 3 | Answer #13 - mechanism, medicolegal importance |
| Hesitation Cuts | 3 | Answer #14 - suicidal significance, features |
| Summons | 3 | Answer #15 - CrPC sections, types, failure to appear |
| Dying Declaration | 3 | Answer #16 - Sec. 32(1) IEA, types, validity |
| Hyoid Bone Fractures + Diagrams | 3 | Answer #17 - manual strangulation, greater cornu, diagrams |
| Types of Hymen | 3 | Answer #18 - 8 types with diagrams and ML significance |
| Joule's Burn | 3 | Answer #19 - entry/exit wound, crocodile appearance, histology |
| Bansdola | 3 | Answer #20 - bamboo compression, PM findings |
Key exam tips:
- For Medical Negligence (10 marks): Always mention the 4 Ds, Bolam test, Res Ipsa Loquitur, Jacob Mathew case, and civil vs. criminal distinction
- For Autoerotic Asphyxia (10 marks): The scene examination checklist is the most important component - examiners expect all 10 points
- For MTP amendments: The 2021 amendment is very likely to be tested; stress the expansion to 24 weeks, inclusion of unmarried women, and the Medical Board provision
- Hyoid bone fracture diagram should always be included when asked