What Is Trigger Finger?
Reviewed: Dr. Gromatzky
3. Inflammation
Whether inflammation results from over-exertion of the fingers, injury, or a medical condition, when it affects a tendon in a finger or thumb, it makes it difficult for the tendon to slide through the sheath enveloping it.
When this happens, the affected tendon may end up catching within the sheath such that it cannot move the finger inward. This leads to the condition of trigger finger.
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