What is tenosynovitis? Tenosynovitis is a common clinical condition, with a prevalence of 46% in the middle-aged and elderly population according to statistics. The main manifestation is pain at the affected area, often accompanied by functional impairment. For example, in flexor tendinitis, the affected finger has pain at the metacarpophalangeal joint, the joint flexion and extension function is limited, and when flexing the finger, sometimes it suddenly stays in a semi-flexed state and cannot be extended and flexed, and it can be flexed and extended only when the finger is triggered, then there is a feeling of trigger beating, and there is a popping sound, so it is also clinically known as popping finger, plate machine finger. Because of the structural pathological changes such as adhesions and stenosis of the diseased tendon sheath, conservative treatment methods are not effective. However, some patients are prone to soft tissue adhesions and scars after surgery due to their scarring constitution, which adversely affects the function and aesthetics of the treated area, leading many patients to take a cautious attitude toward surgery. Therefore, although the disease is small, it has become a difficult clinical disease. How to combine Chinese and Western medicine to treat tenosynovitis? Combining the advantages of both Chinese acupuncture needles and Western scalpel, acupuncture therapy can achieve the efficacy of surgical treatment with minimal trauma like acupuncture, closure and other conservative therapies, and also has the advantage of no surgical scars. Therefore, in recent years, the clinical treatment of chronic soft tissue injuries has developed rapidly, and tenosynovitis is also one of the indications for acupuncture medicine, and the treatment of this disease with acupuncture has become a routine operation for acupuncturists. Most of the clinical acupuncturists are in accordance with the method of treatment recorded in the authoritative work of acupuncture therapy “small acupuncture therapy” and “principles of acupuncture medicine”, the typical practice is that in the most obvious place of the patient’s tendovaginitis pain, with a cotton fiber dip purple potion point a mark, routine sterilization, injection of local anesthetic containing a small amount of hormone, that is, anesthesia and anti-inflammatory effect, with a needle knife in the mark for longitudinal and transverse incision and release treatment. From the actual clinical point of view, the efficacy is not as accurate as the Western surgical method, especially for the functional recovery of the diseased area, many cases need 2 to 3 times or even more treatment. The reasons for this: 1, the needle knife tool is small, at the same time needle knife treatment is a non-direct vision surgery, its degree of tendon sheath relaxation is not as intuitive and thorough as open surgery. 2, the doctor engaged in needle knife work on the disease local anatomical structure and pathological changes is not enough knowledge, understanding is not deep enough. The tendon sheath has two functions: 1. When the tendon crosses the joint, such as turning angle or sliding amplitude, there is a tough tendon sheath to restrain it on the periosteum to prevent the tendon from springing up or sliding to both sides like a bowstring. And the tendon sheath at the bone surface in order to anastomosis with the tendon sheath often form grooves, tendon sheath in the bony groove. 2, people in life and work in many activities, tendons constantly in the tendon sheath back and forth movement, tendon sheath can secrete lubricating fluid to play a role in protecting the tendon to avoid friction. When the human body to a certain physiological age, the body hormone levels decline, the body of various tissues of protein synthesis disorders, tendon sheath secretion of lubricating fluid decreased. Tendon tissue is easily damaged by repeated abrasion. After the injury, the muscle fibers degenerate, necrosis and rupture, and are repaired by the proliferation of fibrous connective tissue. And wrapped outside the tendon sheath also due to repeated inflammatory adhesions and narrowing, the expansion through the narrow tendon sheath is “hard to squeeze” past. As a result, pain and dysfunction occur at the affected area. Whether the tendon is enlarged after injury, or the tendon sheath is narrowed by repeated inflammatory adhesions, coupled with inflammatory exudate, the stress in the lumen of the tendon sheath increases, and the most concentrated stress is in the joint between the tendon sheath and the bone. And it has been found that high incidence sites such as flexor tendon tenosynovitis of the thumb and radial stenosis tendinitis have anatomic structural causes. Treatment should be based on biomechanical theory and physiological anatomical features.