What’s wrong with clicking fingers? Some fingers clicking is not a problem, some are problematic, now learn together …… Why do your fingers often appear to be popping, and accompanied by pain? I’ll tell you that this is a popping finger, also known as tenosynovitis, a little more rigorous, can be called: finger flexor tendon sheath tenosynovitis. What is tenosynovitis again? The tendon sheath is divided into two layers: the outer layer is the fibrous sheath and the inner layer is the synovial membrane. The synovial membrane is divided into a wall layer and a dirty layer, with the wall layer lining the inner surface of the fibrous sheath and folding back over the tendon to become the dirty layer, also known as the extra tendon membrane. The two ends of the dirty wall layer form a blind capsule, which contains a small amount of synovial fluid and plays a role in lubrication and maintaining the mobility of the tendon. In daily life and work, the frequent activities cause excessive friction, coupled with some parts of the bony bulge or tendon direction change to form an angle, which increases the mechanical friction between the tendon and tendon sheath, this mechanical stimulation, can make the tendon sheath in the early stage of congestion, edema, exudation and other sterile inflammatory reaction. After repeated trauma or prolonged period of time, chronic fibrous connective tissue hyperplasia, hypertrophy, adhesions and other changes occur, and the thickness of the tendon sheath can be within 2.5px of normal, thickened to 0.2-7.5px, resulting in tendon sheath stenosis due to the thickening of the tendon sheath. Tendon sheath and tendon adhesions may also occur to varying degrees, and the tendon may become degenerate and deformed, showing a thickened gourd shape at both ends or a thickened tissue hyperplasia at the damaged area, forming an enlarged middle and thin fusiform shape at both ends. The clinical manifestations are local pain, pressure pain and limitation of joint movement. Clinical manifestations: The onset of the disease is slow, with limited pain on the palmar side of the metacarpophalangeal joint in the early stage, aggravated in the morning or after work exertion, with slightly restricted activities, gradually developing, and the pain may spread to the wrist and the distal end of the fingers. There may be acute attacks. With the development of tenosynovial stenosis and tendon degeneration and thickening, it becomes increasingly difficult for the tendon to slide through, resulting in trigger-like movements and popping sounds when the finger is flexed and extended. In severe cases, the finger cannot be actively flexed or interlocked in the flexed position and cannot be straightened. Treatment 1.Conservative treatment is usually conservative for patients with simple disease within a short period of time after the appearance of symptoms. Conservative treatment methods include: stretching, night splinting, and a combination of hot and cold treatment. After one injection of corticosteroid, 60% of patients can obtain satisfactory results. 2, surgical release of non-surgical treatment is ineffective or recurrent episodes of tendon sheath has been narrowed, surgical treatment should be used.