Stephen Bird

When I see a triggering finger or thumb with a normal looking A1 pulley it is usually due to a degree of tenosynovitis. When this occurs the tendon(s) becomes larger and then friction occurs and the friction exacerbates it making the tendon swell more etc etc and bingo you have a trigger.

Anything that leads to tenosynovitis will be the culprit. May be overuse, may be underlying rheumatoid. Diabetes is also a risk factor and no doubt sometimes it is just bad luck.

We generally treat these patients with a catabolic injection into the flexor sheath as a first up intervention.


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