What is the historical common name for injury to the ulnar collateral ligament of the thumb at the base of the first metacarpophalangeal joint due to forced abduction?

What is the historical common name for injury to the ulnar collateral ligament of the thumb at the base of the first metacarpophalangeal joint due to forced abduction?

• A. Skier's Thumb
• B. Gamekeeper's Thumb
• C. Jersey Thumb
• D. Thumb UCL sprain

Answer: (B)

The situation hinges on the ulnar collateral ligament at the base of the thumb’s first metacarpophalangeal joint and how it stabilizes the thumb against sideways (ulnar) stress during grip. When the thumb is forced away from the hand (abduction), that ligament can stretch or tear. This injury was historically seen in gamekeepers who repeatedly pulled their thumbs away while gripping game to fillet, leading to chronic laxity of the UCL. The term that arose from that historical association is Gamekeeper's Thumb, which became the classic name for this UCL injury at the thumb. While acute ski-pole injuries later popularized the label Skier's Thumb, the traditional historical name remains Gamekeeper's Thumb. Jersey Thumb is not a standard term, and Thumb UCL sprain simply describes the injury without the historical eponym.

The situation hinges on the ulnar collateral ligament at the base of the thumb’s first metacarpophalangeal joint and how it stabilizes the thumb against sideways (ulnar) stress during grip. When the thumb is forced away from the hand (abduction), that ligament can stretch or tear. This injury was historically seen in gamekeepers who repeatedly pulled their thumbs away while gripping game to fillet, leading to chronic laxity of the UCL. The term that arose from that historical association is Gamekeeper's Thumb, which became the classic name for this UCL injury at the thumb. While acute ski-pole injuries later popularized the label Skier's Thumb, the traditional historical name remains Gamekeeper's Thumb. Jersey Thumb is not a standard term, and Thumb UCL sprain simply describes the injury without the historical eponym.