The Clean Pass: Upper Limb Impalement with Complete Neurovascular Preservation

Impalement injuries of the upper limb represent a rare and striking form of penetrating trauma, often associated with significant risk of neurovascular and tendinous damage due to the compact anatomical arrangement of the forearm. Despite their alarming external appearance, actual morbidity is determined by the trajectory relative to critical structures. Effective management requires careful pre-hospital stabilization, thorough pre-operative assessment, appropriate imaging, and meticulous surgical extraction under direct visualization to minimize complications.

A 29-year-old male presented with a trans-forearm impalement injury sustained after falling over a metal gate while under the influence of alcohol. The iron rod, approximately one inch in diameter, entered the volar aspect of the left forearm and exited dorsally near the base of the thumb. Emergency responders appropriately shortened the rod in situ with an angle grinder to facilitate transport without removing it. On arrival, the patient was hemodynamically stable, with intact motor and sensory function in the radial, median, and ulnar nerve distributions, and palpable distal pulses. Plain radiographs confirmed absence of fractures or bony involvement.Surgical exploration under general anesthesia revealed that the rod traversed a superficial subcutaneous plane, sparing major neurovascular structures and tendons. Controlled extraction under direct vision was performed without complication. The wound was irrigated thoroughly with normal saline, povidone-iodine, and hydrogen peroxide, and closed over a glove drain. The patient received broad-spectrum intravenous antibiotics and tetanus prophylaxis per protocol. Post-operative recovery was uneventful, with full preservation of neurovascular function and a complete range of motion at discharge on post-operative day ten and at subsequent follow-up.

This case highlights the critical importance of adhering to established trauma management principles in impalement injuries, including stabilization at the scene, avoidance of pre-mature removal, comprehensive pre-operative evaluation, and extraction under direct visualization. Despite the dramatic presentation, the foreign body followed a superficial trajectory that spared vital structures, resulting in an excellent functional outcome. This report contributes to the limited literature on upper limb impalement with complete neurovascular preservation and underscores the need for a structured, anatomy-respecting, multidisciplinary approach to optimize patient outcomes in such complex trauma scenarios.