RT Book, Section A1 Breed, Meghan A1 Fitch, Robert Warne A2 Knoop, Kevin J. A2 Stack, Lawrence B. A2 Storrow, Alan B. A2 Thurman, R. Jason SR Print(0) ID 1181041999 T1 Gamekeeper’s Thumb (Skier’s Thumb) T2 The Atlas of Emergency Medicine, 5e YR 2021 FD 2021 PB McGraw-Hill PP New York, NY SN 9781260134940 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1181041999 RD 2024/04/19 AB Forced radial deviation (abduction) of the thumb can cause a rupture of the ulnar collateral ligament (UCL) known as “gamekeeper’s” or “skier’s” thumb. The tear usually occurs at the proximal phalanx insertion and can be associated with volar plate and dorsal capsule injury. Pain and swelling are present over the ulnar aspect of the proximal phalanx and thumb metacarpal.