What differentiates a sprain from a strain?

A sprain and a strain are both types of soft tissue injuries, but they affect different structures in the body. A sprain occurs when ligaments, which are tough bands of connective tissue that connect bones to other bones at a joint, are overstretched or torn. This can happen during activities that involve twists, falls, or impacts that force a joint out of its normal position.

On the other hand, a strain involves the muscles or tendons, which are tissues that connect muscles to bones. Strains occur when these muscles or tendons are overstretched or torn, often due to overexertion, lifting heavy objects, or eccentric movements where the muscle elongates while under tension.

Understanding this distinction is crucial for diagnosis and treatment; knowing whether the injury is a sprain or a strain can guide appropriate management and rehabilitation strategies tailored to the specific structures involved.