Inability to bend the thumb: the thumb stenosis tenosynovitis is a disease caused by repeated friction resulting in hypertrophy and narrowing of the sheath. Repeated extension and flexion, grip and pinch work predispose to this disease. It is more common in men. Occurred in the finger flexor tendon sheath is also known as trigger finger, metacarpophalangeal joint palmar pressure pain, flexion and extension of the finger caused by popping. A, treatment measures: 1, treatment of tenosynovitis available heat therapy, massage and adequate rest for about 3 weeks, especially to reduce the manual labor caused by the disease. 2, local closed treatment, can make early tendovaginitis to get relief, closed once a week. 3, the above methods of treatment is ineffective or recurrent, tendon sheath incision should be done, after surgery should be done early flexion and extension finger activities to prevent tendon adhesions. 4.No manual labor within 1 month after surgery. Use hydrocortisone acetate, trenbolone acetate or prednisolone acetate injected into the tendon sheath for local sealing, has a good effect. 5, to the longer duration of the disease, recurrent, the above treatment is ineffective, can cut the narrow part of the tendon sheath, parallel partial excision, so that the tendon sheath no longer squeeze the tendon, can achieve the purpose of radical treatment. 6, can also be performed in Chinese medicine small needle closed relaxation, cut the narrow part of the tendon sheath, the effect is also very good. Preventive measures: 1, in the laundry, cooking, knitting sweaters, cleaning and other household chores, pay attention to the correct posture of the fingers, wrists, do not overbend or back stretch; carry items not too heavy; fingers, wrists do not exert too much force. 2, feeling fatigue of the body joints can take a hot bath to relieve the tense muscles, or in the sore parts of the hot compress. 3, when washing clothes in winter, it is best to use warm water, snow after snow, but also to wear cotton gloves to prevent the hands from getting cold. 4, wrist joints to do a 360-degree rotation; or the palm of the hand to make a strong fist and then relax, back and forth a few times; or the fingers back pressure or palm back pressure a few times, can effectively relieve hand pain. 5, for long-term ambulatory office workers, should use the correct working posture, try to make the hands balanced, wrists can touch the real thing, do not hang.