What is the key difference between a sprain and a strain?

The distinction between a sprain and a strain is critical for understanding injuries related to the musculoskeletal system. A sprain specifically refers to an injury of a ligament, which is the connective tissue that links bones together at a joint. This type of injury can occur due to overstretching or tearing of the ligament, often resulting from sudden movements or twisting.

On the other hand, a strain concerns muscles or tendons, which attach muscles to bones. A strain occurs when these soft tissues are overstretched or torn, often due to overexertion or excessive force applied to a muscle or tendon.

Thus, recognizing that a sprain affects ligaments and a strain affects muscles or tendons is crucial for proper diagnosis and treatment. Understanding this difference helps in evaluating the nature of an injury and implementing appropriate medical response and rehabilitation strategies.