Gamekeeper's thumb injury involves damage to which ligament?

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Multiple Choice

Gamekeeper's thumb injury involves damage to which ligament?

Explanation:
Gamekeeper’s thumb (skier’s thumb) is a tear of the ulnar collateral ligament on the ulnar side of the first metacarpophalangeal (MCP) joint. This ligament stabilizes the MCP joint against valgus stress when the thumb is gripped or forced outward. When it tears, the thumb MCP joint becomes unstable, causing painful pinch and weakness. The ligament injured in this scenario is not at the DIP joint, nor is it the volar plate or the radial collateral ligament of the MCP. In some cases a Stener lesion can occur, where the torn UCL is displaced and trapped under the adductor pollicis aponeurosis, requiring surgical repair.

Gamekeeper’s thumb (skier’s thumb) is a tear of the ulnar collateral ligament on the ulnar side of the first metacarpophalangeal (MCP) joint. This ligament stabilizes the MCP joint against valgus stress when the thumb is gripped or forced outward. When it tears, the thumb MCP joint becomes unstable, causing painful pinch and weakness. The ligament injured in this scenario is not at the DIP joint, nor is it the volar plate or the radial collateral ligament of the MCP. In some cases a Stener lesion can occur, where the torn UCL is displaced and trapped under the adductor pollicis aponeurosis, requiring surgical repair.

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