Trigger finger commonly affects patients between 40 to 60 years of age with a predilection for women. It is more common in patients with Rheumatoid arthritis, Diabetes and repetitive strain injuries. Any finger can be affected.
Symptoms develop when a tendon cannot glide in its sheath because of thickening of the A1 pulley over the Metacarpo-phalangeal joint. (Figure 1)
The onset is insidious and usually starts with pain and sometimes a palpable nodule or small lump in the palm. As symptoms progress, the patient may complain of “triggering” or “catching” of the finger with flexion and extension. (Figure 2)
Treatment for early symptoms includes rest, analgesia and splinting. Steroid injections are useful for cases that do not respond to conservative treatment.
Surgical release is recommended for recalcitrant cases.