Bursitis and Tendonitis

UMass Memorial Health rheumatologists are experts at diagnosing and treating bursitis and tendonitis. We work to address the pain, help your body heal and prevent these conditions in the future.

What Is Bursitis?

A bursa is a small sac that rests between tendons and over joints. There are more than 100 of these sacs in your body. They’re made of the same type of tissue that lines joints. Most of these sacs exist around your shoulders, hips, knees and elbows.

Bursitis occurs when these sacs become inflamed due to injury, overuse or infection. This inflammation can be painful and occasionally causes swelling.

What Is Tendonitis?

A tendon is the fibrous end of a muscle that connects to your bone. Tendonitis happens when a tendon becomes irritated and painful from an injury, overuse or infection. It is also sometimes considered a sprain or strain.