Behind-the-knee pain could be due to muscle strain or arthritis—or something far more serious. Orthopedic experts say these ...

An injury or arthritis most likely causes pain outside the knee. A doctor can determine the cause based on your other symptoms and the results of imaging tests. Pain on the outer (or lateral ...

Ankle bursitis occurs when one or more of the bursae sacs in the ankle become inflamed. This can cause pain, swelling, and difficulty moving the ankle. Bursae are small, fluid-filled sacs ...

Bursitis is a painful swelling of the bursae, the fluid-filled sacs that support the joints and reduce friction between tendons, muscles, and bones near the joints. Bursitis occurs when these sacs ...

Locked knee can be a distressing condition that affects mobility and daily activities. While some cases can be managed with ...

Though frustrating and difficult, hip pain is often preventable—and even when it isn't, it's nearly always treatable.

If you have hip bursitis, you know the pain and discomfort can keep you from ... Bursae are found throughout the body, including around the shoulder, knee, heel and hip. When a bursa becomes ...