skier's thumb

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The short, thick first finger on the radial side of the hand, having two phalanges and being opposable to the other four digits. Synonym: pollex See: hand for illus

gamekeeper's thumb

An injury to the ulnar collateral ligament of the metacarpophalangeal joint of the thumb.
Synonym: skier's thumb.

hitchhiker's thumb

A hyperextended thumb or the ability to extend the distal interphalangeal joint of the thumb more than 45 degrees. It is an autosomally inherited trait.

skier's thumb

Gamekeeper's thumb.

tennis thumb

Calcification and inflammation of the tendon of the flexor pollicis longus muscle owing to repeated irritation and stress while playing tennis.