1. Symptoms of congenital stenosing tenosynovitis of the thumb Generally, the thumb cannot be straightened after birth, others can break the thumb straight for him, but there is a relatively large resistance, there can be a bouncing sensation when wrenching it straight, and sometimes there is a popping sound. There are also times when the thumb is in a straightened state and cannot be bent, which is relatively rare. Careless parents often do not notice it until after the age of 1 year. A hard nodule the size of a green bean can be felt at the base of the thumb in the palm of the hand. The mechanism of occurrence is different from that of tenosynovitis in adults. It is believed that the narrowing of the annular ligament of the metacarpophalangeal joint at the level of the subacromial bone and the spindle-shaped swelling of the long flexor tendon of the thumb are the main pathological changes that cause this deformity. The exact etiology is unknown. The thickening of the tendon can be found during surgery, which forms a snag at the narrowed tendon sheath, so the finger cannot move. Therefore, it is thought that the abnormal edema occurred in this area during the development process. 3.Can it be cured? The cure rate is 100%. Don’t worry. 4.How to treat Adult tendonitis can be treated conservatively with a high success rate. However, most of the tendon sheaths in children need surgery, and massage can cause local adhesions, increasing the difficulties during surgery. Surgery requires sedation and general anesthesia. There is no evidence that general anesthesia affects intelligence. The surgery is simple, and loosening the tendon sheath is all that is needed. Pure surgery usually takes less than ten minutes. You can move freely after surgery. There are very few recurrences of adhesions.