In-depth

Twisting the knee can cause a common knee injury known as a torn meniscus. Treatment sometimes includes surgery.

Baker's cyst

A Baker's cyst is a swollen area behind your knee. Treating the primary cause — such as arthritis or a cartilage tear — usually helps relieve pain.

Chondromalacia patella

Chondromalacia patella is a knee condition that plagues many runners. It's often caused by overuse or injury.

Knee pain

Find out what could cause knee pain.

Posterior cruciate ligament injury

Less common than an ACL knee injury, a torn posterior cruciate ligament can be painful and sideline you for months. Find out more.

Thumb arthritis

Thumb arthritis (basal joint arthritis) occurs when the joint at your wrist and the base of your thumb develops osteoarthritis.

Water on the knee

Water on the knee refers to excess fluid inside or around your knee joint. Find out what causes this common knee problem.

Wrist pain


Aug. 28, 2012