Gluteal myoclonus is a clinical syndrome in which the gluteal muscle and its fascial fibers degenerate and contracture due to the injection of gluteal muscle, which leads to the characteristic gait and signs of hip joint function limitation. At present, more surgical treatment, our hospital used a small incision on the greater trochanter to cut off the gluteal muscle contracture band transversely to treat 48 cases of gluteal myoclonus, and after follow-up observation, the efficacy was satisfactory. Clinical data: 48 cases in this group, 31 male, 17 female. Age 3-23 years old, average 10.5 years old. There were 39 cases with bilateral onset and 9 cases with unilateral onset. 43 cases had a history of multiple intramuscular injections in the buttocks. All cases had limp shape, atrophy of gluteal muscle on the affected side, restriction of hip contraction, positive cross leg test, positive squatting test, 38 cases had obvious “popping” sign of hip joint activity, 26 cases had pelvic tilt and pseudo-inequal length of both lower limbs. Treatment: General anesthesia was used in 17 cases and epidural anesthesia in 31 cases. The patients were placed in the lateral position with the affected side on top. A small “S”-shaped incision was made to the center of the contracture lesion via the femur 2cm above the greater trochanter, the length was 5-7cm, the skin was incised subcutaneously, and the deep fascial surface was peeled off, and then separated layer by layer by pulling a hook, revealing the fibrotic “whitish” contracture band, and the thickened and fibrotic fascial membrane on the surface of contracture muscle group. See the thickened and fibrotic fascial tissue on the surface of the contracture muscle group, cut off the hip joint as much as possible to make the hip joint adduction, flexion, the blade and the direction of the gluteal muscle fibers perpendicular to the direction of the thigh to exert a slight internal force, and gradually cut off the contracture fibrous bundles that limit the adduction of the hip joint (the whole layer of the group of fibrotic muscles can not be completely dissected, but only partially to achieve the therapeutic effect of the good, otherwise it will affect the stability of the affected hip). The fibrotic band was cut and allowed to retract freely without resection. Check the limb on the operated side, Obber’s sign is negative, neutral hip flexion can reach more than 100°, and internal retraction and internal rotation are basically normal. Flush the surgical incision, place a drainage tube, and suture in layers. If the disease is bilateral, after the release of one side, turn the position for the release of the opposite side. After the operation, the surgical incision was bandaged with pressure. The knees and ankles were fixed with elastic bandages in the knee-crossing state. Postoperative care and functional exercise: After the operation, both knees were immobilized with bandages for 2-3 days. Routine application of antibiotics for 5-7 days. Drainage tube should be removed 24-48 hours after surgery. Hip flexion activities in neutral position should be started in bed 3 days after surgery; 4-5 days after surgery, get out of bed and do functional exercises such as cross-step walking, squatting with knees together and crossing legs; 1 week after surgery, start muscle strength exercises for adductor muscles; 3 weeks after surgery, start resistance exercises and straight leg raising exercises with sandbags tied to the calves. The stitches were removed 10-14 days after surgery. While practicing the muscle strength of the adductor group, the exercise of neutral hip flexion was continued. Results: Efficacy assessment. Excellent: normal gait, knee-on-knee squatting and leg crossing test, no effect on sports and physical labor. Good: gait is normal, the knee cannot squat completely (neutral hip flexion 120°-130° and | or cross-leg test is a little poor, basically no effect on sports and physical labor). Fair: light external “figure eight” gait, with limited squatting (poor completion of neutral hip flexion and or leg crossing test, with some effect on sports and physical labor). Poor: ineffective surgery. Efficacy assessment results: 48 cases in this group, 41 cases were followed up for 6 months and 3 years, with an average of 21 months. Functional recovery was satisfactory, no postoperative pain affecting functional exercise, no surgical incision infection. According to the above efficacy evaluation criteria, 32 cases (78.1%) were excellent, 6 cases (14,6%) were good, and 3 cases (7.3%) were acceptable, with an excellent rate of 92.7%.