Trigger Finger / Thumb

Clicking/Locking Finger

Stenosing tenosynovitis of the flexor tendon sheath, most commonly at the A1 pulley (MCPJ level). The tendon develops a nodular thickening that catches on the narrowed pulley, causing clicking and eventually locking. Most common in middle-aged women. Associated with diabetes, RA, CTS, de Quervain's.

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