Gamekeeper's thumb (also known as skier's thumb or UCL tear) is a type of injury to the ulnar collateral ligament (UCL) of the thumb. The UCL may be torn, damaged or in some cases avulsed from its insertion site into the proximal phalanx of the thumb in the vast majority (approximately 90%) of cases. A gamekeeper's thumb, also called a skier's thumb, is an injury to one of the important ligaments at the base of the thumb joint. The injury involves the ulnar collateral ligament (UCL), a band of tough, fibrous tissue that connects the bones at the base of the thumb.This ligament prevents the thumb from pointing too far away from the hand.
Jul 20, 2006 · Any hard force on the thumb that pulls the thumb away from the hand (called a valgus force) can cause damage to the ulnar collateral ligaments. When the thumb is straight, the collateral ligaments are tight and stabilize the joint against valgus force. If the force is too strong, the ligaments can tear. They may even tear completely.Author: Eorthopod. Oct 31, 2008 · Introduction. Rupture of the ulnar collateral ligament of the thumb metacarpophalangeal joint (MCPJ) is a common hand injury that can lead to long-term problems if inadequately treated [3, 5, 34].Excessive valgus stress to the base of the thumb may result in disruption of the ulnar collateral ligament complex with or without an avulsion fracture of the base of the proximal phalanx.Cited by: 17.
(OBQ10.213) Creation of a Stener lesion, as found in Gamekeeper's thumb, requires combined tears of the proper and accessory ulnar collateral ligaments in order for the ligament to be displaced by the adductor aponeurosis. Which of the following most accurately describes the role these ulnar collateral ligaments (PCL/ACL) play in thumb MCP joint stability?3.9/5.