Trigger Finger

Trigger finger (stenosing tenosynovitis) occurs when inflammation narrows the tendon sheath surrounding the flexor tendon of a finger, causing the finger to catch, lock, or snap when bent. It is most common in the ring finger and thumb and is associated with repetitive gripping, diabetes, and rheumatoid arthritis. When caught early, trigger finger responds well to conservative treatment — including splinting to rest the inflamed tendon.