What is a sprain?

A sprain specifically refers to an injury to the ligaments, which are the strong bands of connective tissue that connect bones to one another and help stabilize joints. When a sprain occurs, it means that these ligaments have been stretched or torn due to excessive force or twisting motions, often resulting in pain, swelling, and reduced mobility around the affected joint.

In contrast, the other options describe different types of injuries. An injury to the skin would refer to cuts, abrasions, or lacerations, which do not involve the underlying structures supporting a joint. A muscle tear specifically involves damage to muscle fibers, while a fracture pertains to a break in a bone. These distinctions are critical in understanding the nature of various injuries and guiding appropriate treatment.