What condition is best described as the inflammation of a tendon due to overuse?

Tendinitis is the best description for the inflammation of a tendon due to overuse. This condition occurs when the tendon, which connects muscle to bone, becomes irritated and inflamed, typically as a result of repetitive motion or excessive strain placed on it. This can happen in various parts of the body, often in areas like the shoulders, elbows, wrists, knees, and ankles.

In contrast, bursitis is the inflammation of the bursa, a small fluid-filled sac that cushions the bones, tendons, and muscles near joints, and is typically caused by repetitive motion or prolonged pressure. A sprain involves the stretching or tearing of ligaments, which connect bones at a joint, usually due to a sudden twist or impact that doesn’t typically relate to overuse. A strain pertains to the stretching or tearing of muscles or tendons, often resulting from acute injury rather than chronic overuse.

Thus, tendinitis is specifically aligned with chronic inflammation of tendons due to repetitive activities, making it the correct choice for this question.