An autopsy of a body recovered from a house fire shows 'pugilistic attitude' (flexion of upper and lower limbs). This finding in the absence of other evidence is BEST interpreted as:

• A Defensive injuries sustained while alive during the fire
• B A heat stiffening artefact caused by coagulation and shortening of muscle proteins by intense heat; it occurs postmortem and has no medico-legal significance for ante-mortem events ✓
• C Rigor mortis superimposed on fire injuries
• D Cadaveric spasm from extreme fear at the moment of death

Explanation

The pugilistic or boxer's attitude is a heat artefact caused by shrinkage and coagulation of muscle proteins when exposed to intense dry heat. Flexor muscles are more powerful than extensors, so heat contraction causes flexion of elbows, wrists, hips, and knees, producing the characteristic fighter's stance. It occurs postmortem in response to heat and has no association with ante-mortem injuries. It is entirely distinct from rigor mortis (enzyme-mediated ATP depletion), cadaveric spasm (instantaneous postmortem stiffening from extreme emotion/exertion), and defensive injuries.

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

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.