Fatal Self-Inflicted Chop Wound by a Supari Cutter (Sudi): A Rare Case With Forensic Analysis of Wound Patterns and Weapon Biomechanics.

Chop wounds on the body, produced by the forceful impact of a heavy swinging blade, are conventionally considered telltale signs of homicide in forensic pathology, as a person cannot plausibly inflict such a wound upon themselves, since it appears to demand the momentum and arc of another individual's swinging arm. Existing literature has extensively documented suicidal deaths involving incised and stab wounds, where the mechanics of a short blade wielded by the victim's own hand are well established and readily accepted. Until now, however, no prior study has documented such a case of suicide resulting from a chop wound. The case describes a rare instance in which a 51-year-old man died from a self-inflicted chop wound to his own neck. He did not employ a conventional blade but instead used a Sudi, a device commonly found in Indian shops and ordinarily used for cutting areca nut or betel nut. He positioned his neck within the cutting mechanism of the Sudi and self-actuated its lever, producing a deep, transecting wound that divided the cervical soft tissues, the major neurovascular structures, the cervical vertebra, and the spinal cord. What renders this case forensically noteworthy is that the morphology of the wound did not conform to the pattern typically associated with an assault delivered by a swinging blade. Instead, forensic examination identified asymmetric wound depth, bevelling along the wound margins, and pressure and traction marks on the adjacent skin. These features could not be reconciled with the conventional arc and impact mechanics of a wielded chopping weapon. They became fully explicable once the compressive and shearing action of the Sudi's lever-based mechanism was taken into account. The Sudi does not operate through a freely swung strike but rather functions through a hinged lever that compresses and shears through tissue placed within its jaws. Consequently, the wound superficially resembled a homicidal chop injury while actually bearing the mechanical signature of a self-actuated, static compression event. It must be emphasized that no single category of evidence was sufficient in isolation. Rather, it was the convergence of multiple strands like the findings at the crime scene, the contextual history of the deceased's financial distress and a rigorous biomechanical analysis of the weapon that proved pivotal in establishing suicide as the definitive manner of death. This case demonstrates concretely how the reflexive assumption that chop wounds are inherently homicidal can mislead investigators if the specific mechanics of the implicated weapon are not meticulously scrutinized. Exceptions can and do arise when atypical weapons with unconventional mechanical actions are involved. By documenting morphological features that diverged from the expected homicidal pattern and by tracing those divergences to the specific engineering of the Sudi's cutting action, the report illustrates how the boundary between homicide and suicide can sometimes become obscured. Features characteristic of one manner of death may, paradoxically manifest in a case belonging to the other. Forensic pathologists and investigating authorities must resist the temptation to arrive at hasty conclusions regarding manner of death based on wound appearance alone. A comprehensive and evidence integrated approach is essential, one in which weapon biomechanics, scene reconstruction, and circumstantial history are weighed collectively.