Library: Trigger Finger
Trigger Finger
Tendons attach muscle to bone and are the focus for the “pull” of the muscle. Some are encased in sheaths that are naturally lubricated so that they slide easily when you use your muscles. In Trigger finger there is a malfunction of the lubricating system between the tendons and their sheath in the affected finger or thumb, causing them to “grate” and they then become irritated and inflamed. The sheath then becomes thickened and the tendons can no longer glide smoothly. This will sometimes cause the finger to click as you bend or straighten it. This is an over-use injury caused by repetitively using the thumb when it is under too much stress.Search
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