1.Etiology: The broad fascia tensor fasciae is flat and rectangular in the hip and thigh outside the two layers of the broad fasciae and starts from the anterior superior iliac spine, migrates at the junction of the upper and middle 1/3 of the femur in the iliotibial bundle and ends at the lateral aspect of the upper tibia, which has the role of forward flexion and abduction of the thigh. When the human body stands, the broad fascia tensor muscle contracts, restraining the muscles of the lateral thigh, increasing its tension and contraction, and also playing a role in fixing the knee joint to maintain a standing position. Because of the large size of the muscles in the thigh area, the strength of the muscles, frequent activities, so that the tension of the broad fascia tensor muscle increases, resulting in increased opportunities for friction, coupled with the superficiality of its location, but also susceptible to external factors such as wind, cold and moisture and trauma and lesions. Frequent bending and sitting with the hip joint in flexion can cause shortening degeneration and aseptic inflammation of the broad fascial tensor muscle. In some cases, due to the lesion of one side of the waist and hip, knee, calf or ankle, the diseased side cannot walk with weight, so that long-term single-leg weight-bearing can cause strain lesion of the broad fascia tensor muscle on the healthy side. In addition: in the case of sudden posterior extension of the thigh and knee extension, it can cause acute injury to the broad fascia tensor muscle, which can turn into chronic sterile inflammatory lesions if not treated effectively in time. 2, symptoms hip pain or hip pain, walking leg lifting hip pain is obvious, do not dare to single leg on the ground weight bearing. In mild cases, the patient only feels soreness, sleepiness, swelling, pain or discomfort in the hip, and walking is weak. Generally, the patient can insist on moderate or small amount of activities, but the symptoms are aggravated at the beginning and after the end, especially when doing body rotation, hip extension and rapid change of movement direction. In patients with prolonged disease, there is numbness in the anterior and lateral aspect of the hip, and the pain often radiates along the lateral thigh to the knee. In some patients, due to the contracture of the iliotibial bundle, the hip joint stretches and flexes with the femoral ridge, resulting in a popping sound, forming a “popping hip”. In more severe cases, the outer thighs are tightened, just like the bowstring is tightened, and it is difficult to control walking, with the toes facing outward, and a crab-like transverse limp is often seen. 3, examination The patient is lying prone, the second to third finger of the examiner’s hand presses the anterior superior iliac spine in front of the iliac bone, and a transverse palm behind it is pressed with the thumb, which produces significant pain. In some patients, pain is transmitted to the knee when sliding pressure is applied to this area. In patients with less subcutaneous fat in the hip, a stripe-like object is often palpable in this area; when the patient is made to extend and flex the hip joint, this stripe-like object can be felt to slide and sound under the hands. ober test sign: (+). There is a clear relationship between the degree of straight leg elevation on the affected side and the position of the thigh. When the affected limb is elevated 30°～50° in neutral position, pain and numbness will appear in the lateral thigh and knee; while when the thigh is inducted and internally rotated 20°～30°, and the broad fascia is in tension, heavy pain will appear immediately when doing straight leg elevation; when the thigh is abducted and externally rotated 20°～30°, and the broad fascia tensor muscle is relaxed, pain will not appear even when the straight leg is elevated to 60°～90°. 4, treatment (1) acute cases need to rest properly, and take some anti-inflammatory painkillers. If the pain is severe, appropriate amount of hormone preparation can be added at the same time. (2) Self-manipulation therapy: use the affected side of the fingers to lift and pinch the tissues of the painful area, mentioning and pinching a relaxation, from top to bottom, the force from light to heavy, about 20 times each time. Then, the affected side of the hand in a semi-clenched fist to push the lesion of the broad fascia tensor muscle, so that the outer thighs have a burning sensation, so as a treatment, 1 to 2 times a day. (3) physical therapy, hot compress drugs local heat, cupping treatment, can also receive a certain effect. (4) Local injection of the conventional compound at the pressure pain point is often received with satisfactory effect, once every 5d. (5) If the above non-surgical treatment is not effective, “T” shaped dissection and release of the broad fascial tensor muscle is feasible, but the lower arm of the “T” shaped dissection must be more than 3-5 cm below the greater trochanter, and at present, arthroscopic surgery is better, with less trauma and faster recovery!