Which condition is characterized by inflammation of a tendon?

Tendonitis is characterized by inflammation of a tendon, which connects muscle to bone and facilitates movement at joints. This condition often arises from repetitive motion or acute injury, leading to pain, swelling, and limited mobility in the affected area. It commonly occurs in various parts of the body, such as the shoulder, elbow, wrist, or knee. Recognizing tendonitis is essential for timely treatment, which may include rest, ice, anti-inflammatory medications, and physical therapy to promote healing and restore function.

While other conditions listed relate to musculoskeletal health, they do not specifically involve tendon inflammation. Arthritis involves inflammation of joints and can lead to changes in cartilage and bone, while osteoporosis is characterized by decreased bone density and increased fracture risk. Bursitis involves inflammation of the bursa, a small fluid-filled sac that reduces friction between tissues in the joints, but does not directly affect tendons. Thus, understanding the specific characteristics of tendonitis helps in identifying the correct answer in this scenario.