The thumb joint at the base of the thumb is the most mobile in the hand. The thumb can move up and down, in and out, and rotate slightly to touch the fingers. We move our thumbs hundreds of times each day. The thumb works as a grip when we use a hammer or hold a glass. The thumb also acts as a stabilizer to allow the fingers to manipulate items.
7 Hand Exercises to Ease Arthritis Pain
Trigger Thumb - StatPearls - NCBI Bookshelf
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Congenital clasped thumb describes an anomaly which is characterized by a fixed thumb into the palm at the metacarpophalangeal joint in one or both hands. A study of Weckesser et al. The anomaly is in most cases bilateral present in both hands. In order for the thumb to maintain a normal position, a strict balance between these groups is required.
The tendons in your thumb and fingers are covered in a tunnel-like structure of tissues that are called sheaths. If you have trigger thumb, your tendons have become inflamed. Because of this inflammation or swelling, your tendons are no longer properly gliding through your sheaths. When this happens, the base of your fingers may lock up, click, or pop.