Forensic Medicine · Medico-Legal Autopsy and Postmortem Changes (Thanatology)

A man is found dead at the scene of an assault with a dagger still tightly gripped in his right hand. The grip cannot be broken even by considerable force. This finding is best explained by:

  • A Gas stiffening
  • B Rigor mortis
  • C Heat stiffening
  • D Cadaveric spasm
Correct answer: D. Cadaveric spasm

Explanation

Cadaveric spasm is instantaneous rigidity occurring at the moment of death without a preceding primary flaccidity, typically affecting a small group of muscles actively contracted at death, such as the hand gripping a weapon. It cannot be overcome by force and is highly significant because it indicates antemortem voluntary action, helping distinguish suicide from homicide. Rigor mortis develops after a delay of 1 to 2 hours and follows the usual onset sequence, so it would not fix the grip at the instant of death.

Reference: The Essentials of Forensic Medicine and Toxicology (K.S. Narayan Reddy), 34th ed.

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