A Baker cyst (popliteal cyst) is a fluid-filled sac that forms behind the knee.

A bone bruise is a traumatic injury to a bone that is less severe than a bone fracture.

Bone grafting is a surgical procedure that uses transplanted bone to repair and rebuild diseased or damaged bones. During a bone graft, your surgeon inserts a new piece of bone in the place where a bone needs to heal or join. The cells ...

A boxer's fracture is a break in the neck of the fifth metacarpal bone in the hand. It gets its name because the injury is common in inexperienced boxers.

Bunion surgery is done to reduce the pain and correct the deformity caused by a bunion. A bunion (hallux valgus) is an enlargement of the bone or tissue around a joint at the base of the big toe or at the base of the little toe.

Bursitis is inflammation of a bursa, a closed, fluid-filled sac that works as a cushion and gliding surface to reduce friction between tissues of the body. Bursitis of the shoulder (impingement syndrome) occurs when there is swelling and...