Collateral Ligament Injury (Gamekeeper’s or Skier’s thumb)
Ligaments are structures that attach bone to bone. In the thumb, the ulnar collateral ligament is found on the inside of your thumb knuckle connecting the two bones together. The injury occurs when there is an extreme force that pulls the thumb away from the palm of the hand. This can damage the ligament resulting in a tear (sprain) or rupture. Symptoms include pain, swelling and weakness of the thumb. The goal of treatment is to help the ligaments heal so that the thumb can be restored to full function.