Pierced by Force: Forensic reconstruction of two fatal High-Energy Workplace impalements

Impalement injuries represent a rare but forensically relevant form of penetrating trauma that combines characteristics of both blunt and sharp force injury. The mechanisms and reconstruction of such injuries are often complex, particularly in the context of high-energy occupational accidents. Two fatal occupational cases with unusual impalement-like mechanisms are presented. In the first case, a construction worker was struck by a falling metal scaffold tube, resulting in a vertical cranial impalement with destruction of the occipital region and posterior skull base. In the second case, a worker in a high-voltage tunnel sustained fatal injuries caused by a recoiling steel cable, leading to complete transection of the trachea and near-complete rupture of the aorta. Postmortem computed tomography (PMCT) in both cases enabled detailed three-dimensional reconstruction of the injury mechanisms and confirmed the high-energy trajectories of impact. These findings illustrate that impalement injuries, from a forensic perspective, should not be restricted to classical transfixion events. Complex high-energy mechanisms involving secondarily accelerated objects-such as falling rods or recoiling cables-can produce functionally equivalent injury patterns. Their forensic assessment requires interdisciplinary analysis integrating radiological, biomechanical, and technical expertise.