Hanging

Hanging: Intro & Types - The Noose Knows

• Hanging: Asphyxia from neck constriction by a ligature; constricting force is body weight (full or partial).
• Types by Suspension:
  • Complete: Body fully suspended; feet off ground.
  • Partial: Body partly suspended; some part touches ground.
• Types by Knot Position:
  • Typical: Knot at nape of neck (occiput). Common in suicide.
  • Atypical: Knot elsewhere (e.g., chin, side of neck).

⭐ In typical hanging, the ligature mark is usually non-continuous, running obliquely upwards towards the point of suspension (knot).

Hanging: Mechanisms - Breathless Finale

• Multifactorial; often combined, with cerebral hypoperfusion typically predominant:
  • Asphyxia: Airway compression (tongue, larynx) - lesser role in most cases.
  • Cerebral Anoxia/Ischemia: Vascular occlusion - primary mechanism.
    • Jugular veins: ~2 kg force → congestion.
    • Carotid arteries: ~5 kg force → ischemia.
    • Vertebral arteries: ~20 kg force (less common in suicide).
  • Neurogenic Shock: Vagal inhibition (carotid sinus).
  • Spinal Injury: Cervical fracture/dislocation (judicial/long drop) - always investigate.

⭐ In typical suicidal hanging (short drop, incomplete suspension), death is primarily due to cerebral ischemia from arterial occlusion combined with venous congestion, rather than pure asphyxia. Spinal injury must always be thoroughly investigated per BNSS procedures.

Hanging: External Findings - Skin Deep Secrets

• Ligature Mark:
  • Oblique, non-continuous, directed upwards towards suspension point.
  • Typically above thyroid cartilage (Adam's apple).
  • Base: pale, dry, hard, parchment-like. Margins: reddish-brown, congested.
  • Ligature material pattern may be imprinted.
• Face & Eyes:
  • Usually pale (typical hanging); can be congested, cyanotic with petechiae (Tardieu spots) if venous obstruction prominent (atypical hanging).
  • Conjunctival petechiae common.
• Tongue:
  • May be protruded, swollen, and/or bitten between teeth.
• Saliva:
  • Dribbling from angle of mouth opposite to knot.
• Neck: Appears stretched and elongated.
• Post-mortem Lividity (Hypostasis):
  • Prominent in dependent parts: lower limbs, hands.
• Other Signs:
  • Occasional involuntary discharge of urine, feces, or semen.

⭐ The presence of a hard, dry, parchment-like base of the ligature mark is a key indicator of ante-mortem hanging (occurred while alive).

Hanging: Internal Findings - Inside Story

• Hyoid Bone: Fracture common (esp. judicial, outward bend); less in typical suspension. (📌 Hyoid Hangs High)
• Laryngeal/Tracheal Cartilages: Thyroid/cricoid fractures; less common.
• Carotid Arteries: Intimal tears (Amussat's sign); thrombosis.
• Neck Muscles: SCM bruising/hemorrhage. Simon's sign (anterior IV disc hemorrhage).
• Lungs & Brain: Congestion, edema. Tardieu's spots (lungs).
• Vertebral Fractures: Rare in suicidal; C2 (Hangman's) in judicial.

⭐ Fracture of the hyoid bone is more common in judicial hanging (due to the drop) than in typical suicidal suspension, often with an outward displacement of the fractured ends.

Hanging: Medico-Legal - Law & The Rope

• Legal Aspects (BNS):
  • Suicidal intent: While BNS Sec 226 (attempt to commit suicide) remains on the books, the Mental Healthcare Act, 2017 presumes severe stress and mandates care over prosecution.
  • Foul play: BNS Sec 194 (abetment of suicide), BNS Sec 103 (murder).
• Manner of Death:
  • Predominantly suicidal.
  • Accidental (e.g., auto-erotic asphyxia) or homicidal: Rare; requires careful scene & autopsy evaluation.
• The Rope (Ligature):
  • Material (soft/hard) influences ligature mark characteristics.
  • Knot: Position (typical/atypical), type (fixed/slip).

⭐ Differentiating suicide from homicide or abetted suicide (BNS Sec 194) is paramount in medico-legal investigations of hanging deaths.

High‑Yield Points - ⚡ Biggest Takeaways

• Ligature mark: Oblique, incomplete, above thyroid, towards suspension point.
• Cause of death: Primarily cerebral ischemia (carotid compression) and cerebral hypoxia/anoxia; rarely vagal inhibition or C-spine injury.
• Salivary dribbling: Runs from mouth angle opposite the knot.
• Hyoid fracture: In ~15-25%; commoner in judicial hanging.
• Amussat's sign (carotid intimal tears) variably present; strap muscle hemorrhage more consistent.
• Typical hanging: Knot at occiput; Atypical: knot elsewhere.
• Key signs: Ligature furrow, facial congestion, petechiae (Tardieu's spots), tongue protrusion, cyanosis.