There are more causes of finger bending difficulty, such as too long immobilization after trauma, tenosynovitis, gout and so on. 1. Too long fixation after trauma: When the finger is fixed for a long time after trauma such as tendon rupture, fracture and dislocation, it will lead to stiffness of the joints or affect the adhesion of the local soft tissues, fascia, tendons and other tissues, which will result in the dysfunction of flexion and extension of the finger, and make the finger have difficulty in bending. 2. Tenosynovitis: long-term use of the fingers to carry out labor activities will cause edema and thickening of tendon tissues in the tendon sheath, resulting in thickening of the tendon sheath, jamming, so that the tendon in the tendon sheath movement is impaired, which will lead to the symptoms of difficulty in finger bending. 3. Gout: high uric acid in the body will cause uric acid crystals to be deposited in the joints, causing damage to the joints and joint stiffness, which will lead to the symptoms of finger bending. Finger bending difficulties caused by a number of reasons, as well as trauma, finger joint damage, finger nerve damage, etc., it is recommended that the hospital orthopedic department for timely consultation.