Injuries of the thumb and hand are fairly common in sporting activities as in daily (professional) life.
In skiing injuries of the thumb are reported to be the second most injury after injuries affecting the knee.
The incidence of thumb injuries are reported between 5 and 15 % of all injuries in Alpine skiing and can be calculated to be approximately 80,000 – 240,000 patients per year world wide.
The thumb comprises of three bones – the distal phalanx, the proximal phalanx and the metacarpal bone. The latter forms a join with the trapezium bone in the hand as shown on the right. The thumb also has one very important joint when it comes to snow sports – the metacarpophalangeal (MCP) joint. This joint is supported and stabilized on the inside (lateral side) by the all important ulnar collateral ligament – the UCL. It is the MCP joint – and the UCL in particular, that are involved and injured in the classic skiers injury – “skier’s thumb”.
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