Trigger thumb is a condition that occurs in the flexor tendon of the thumb in which a nodule appears on the thumb, making it difficult to impossible to slide the tendon through the pulley in the ...

Trigger thumb can also cause a nodule, or "bump," on the tendon, which you can feel at the base of the thumb. Skier's thumb is damage to the ulnar collateral ligament (UCL) of the thumb.

Trigger finger and trigger thumb occurs when a nodule is present on the flexor tendon of the finger or thumb, and as such, the nodule is unable to clear the pulley of the finger or thumb and ...