What type of injuries are caused by the rubbing of two surfaces together?

Shearing injuries occur when two surfaces move against each other, causing a disruption in the tissue. This type of injury is frequently observed in situations where there is a sliding or rubbing motion, such as in contact sports or when a person falls and their skin is rubbed against a rough surface. The shearing action often results in damage to the skin and underlying tissues, leading to abrasions or lacerations.

In contrast, compression injuries occur when a force is applied to a body part, which can lead to bruising or fractures, while tension injuries arise from forces that pull tissues apart, often leading to strains or ruptures. Avulsion injuries involve a body part being forcibly detached, often seen in severe trauma cases. Understanding the mechanics behind these injuries helps in assessing and providing appropriate first aid and treatment options.