Thumb Ulnar Collateral Ligament Stress Test
Thumb Ulnar Collateral Ligament Stress Testing of the thumb is performed to evaluate for Ulnar Collateral Ligament instability found on Gamekeeper's or Skier's Thumb. After stabilizing the first metacarpal, a valgus stress is applied to the thumb at the MCP joint. Laxity indicates a partial or complete Ulnar Collateral Ligament tear.