A condition in which either full extension of the affected finger is limited or is difficult because of narrowing of the tendons in the base of the tendon sheath
The partial or complete entrapment of a tendon within its sheath. Often the index, or trigger, finger is affected due to squeezing a tool that causes pressure on the palm of the hand while there is stretching and pulling upon the tendon. The tendon and its sheath become inflamed. When repeated over time, changes to the tendon and sheath make it difficult for the tendon to move smoothly along its course. A popping or crackling sound can often be heard when the finger is re-extended.
Tendons in the finger joints can swell due to overuse, "locking" the finger into a fixed position.
Catching or locking of a finger.
Occurs when there is nodule formation within the flexor tendon of the hand. It usually occurs secondary to tenosynovitis (usually due to overuse) or to rheumatoid arthritis. Most commonly, the nodule is trapped under the metacarpophalangeal ligament, as the tendon flexes. Corticosteroid injection usually relieves the symptoms, but sometimes surgery is indicated.
Irritation of the sheath surrounding finger tendons is referred to as trigger finger. The sheath becomes thickened or swollen, or develops a callous, which prevents the tendon from moving smoothly, causing the finger to lock into a bent position. The finger may straighten with a sudden visible "snap", or in severe cases, may not straighten at all. See article: What Is Trigger Finger?.
tendinitis or tenosynovitis (see above) of a finger (or fingers or thumb) caused by repeated triggering of a tool or forcefully holding fingers in one position. It becomes hard to straighten finger.
A snapping, triggering, or locking of a finger, which occurs with inflammation of tendons involved in bending or flexing the finger.
an irritation of the digital sheath that surrounds the flexor tendons of the finger. When the tendon sheath becomes thickened or swollen it pinches the tendon and prevents it from gliding smoothly. In some cases the tendon catches and then suddenly releases as though a trigger were released.
a tendon disorder that occurs when there is a groove in the flexing tendon of the finger. If the tendon becomes locked in the sheath, attempts to move the finger cause snapping and jerking movements. Trigger finger is usually associated with tools that have handles with hard or sharp edges.
Trigger finger, or trigger thumb, is a type of stenosing tenosynovitis in which the sheath around a tendon in a thumb or finger becomes swollen or a nodule forms on the tendon itself. In either case, the tendon can no longer slide freely through its sheath. Affected digits may become painful to straighten once bent, and may make a soft crackling sound when moved.