Gamekeeper Test

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 Gamekeeper Test


What is Gamekeeper Test?

Gamekeeper Test (or skier’s thumb) is used to evaluate the Ulnar collateral ligament of the metacarpophalangeal joint (MCP joint) of thumb.

How is Gamekeeper Test Performed?

Gamekeeper Test
Gamekeeper Test

What does a positive Gamekeeper Test mean?

For testing isolated ulnar collateral ligament laxity (skier’s or gamekeeper’s thumb), 1st carpometacarpal joint is flexed to 30° and then valgus stress is applied at the metacarpophalangeal joint.

Sensitivity & Specificity

Heymen and colleagues1 reported a high sensitivity but low specificity for detection of a palpable mass proximal to the
MCP joint to indicate a complete tear of the UCL of the thumb:

Gamekeeper’s Thumb

Gamekeeper’s Thumb or Skier’s Thumb is characterized by Ulnar collateral ligament injury of thumb that usually tears at its distal attachment to the proximal phalanx. The ligament can become displaced outside of the adductor aponeurosis (Stener’s lesion) and cannot heal without operative intervention.

Clinically this injury can be identified by pain, swelling and tenderness at ulnar aspect of base of the thumb.

On valgus stress test in 30° flexion of MCP joint the joint opens up. This leads on to chronic instability compromising pinch grip when the thumb is stressed in abduction and hence functional disability. Compare with opposite
thumb for abnormal movement on valgus stress.

In acute painful situation infiltration of local anesthesia and valgus stress confirming with stress X-ray may be of good help.

thumb Ulnar collateral ligament injury
Ulnar collateral ligament injury of the Thumb

Reference

  1. Heyman P, Gelberman RH, Duncan K, et al: Injuries of the ulnar collateral ligament of the thumb metacarpophalangeal joint. Biomechanical and prospective clinical studies on the usefulness of valgus stress testing. Clin Orthop Relat Res 292: 165–171, 1993. PMID: 8519106.
  2. Dutton’s Orthopaedic Examination, Evaluation, And Intervention 3rd Edition.
  3. Millers Review of Orthopaedics -7th Edition book.
  4. Campbel’s Operative Orthopaedics 12th edition Book.



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