The Injury Certificate is the official document issued by a medical practitioner to certify the nature, extent, and severity of injuries sustained by an individual, particularly in cases of assault. It provides crucial clinical details such as the type of injury, location, and whether the injury is grievous or simple, which assists legal authorities in understanding the medical aspect of the assault. This certificate plays a vital role in medico-legal investigations as it serves as evidence to support claims and prosecutions. Unlike a death certificate or fitness certificate, it specifically focuses on documenting injuries. Without it, accurate legal assessment and further judicial action would be impeded.

Reference: API Textbook of Medicine, Dr. K. Madan, 10th Edition.