Inflammation of the tissue that surrounds the tendon and ordinarily helps allow smoother motion of the tendon When inflamed, however, this can cause locking or triggering of a finger for example
Inflammation of the tendon sheath surrounding a tendon A common example is DeQuervains Disease, which occurs at the thumb (radial) side of the wrist Sometimes this can result in a creaking sound when the tendon moves inside the inflamed sheath Chronic tenosynovitis occurs when the repetitive activity is mild or intermittent: not enough to cause acute inflammation, but enough to exceed the tendon sheath's ability to lubricate the tendon As a result, the tendon sheath thickens, gets inflamed, and you've got your problem http: //www geocities com/CapitolHill/Lobby/2614/tenso html