Locking: Trigger finger developes at the a1 pulley at the base of the finger or thumb it is a form of stenosing tendonitis and tenovaginitis. The tendon or tendons that glide through the pulley get bound up there from swelling or scaring and tend to lock or trigger. Usually begins with pain and or swelling and progresses to triggering without appropriate treatment. See a hand surgeon.
Answered 3/21/2015
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