Objectives: Rupture of the ulnar collateral ligament (UCL) is a frequent injury of the hand. When untreated, this injury may lead to decreased pinch strength, pain, instability, and osteoarthritis.

Knee pain is the most common muscle and joint ailment that brings people to the doctor. It affects about 25% of U.S. adults. Knee pain may be the result of an injury, overuse, or medical ...