Recently, a special patient was seen who suffered from gluteal fascial contracture, commonly known as “frog-legged man”, due to too many buttock injections (intramuscular injections) when he was sick as a child. The prevalence of this disease is 1.1% in urban areas and up to 3.5%-4.5% in rural areas. Doctors reminded parents that after the child’s injection, it is important to apply hot compresses in a timely manner and avoid infection. Zhengzhou University First Affiliated Hospital orthopedic department Tang Hengtao 22-year-old college student A Fei (a pseudonym) more than a decade ago got a strange disease, bilateral outer thighs always feel tethered by two wide tendons, and slipped through the thigh bone joints accompanied by a cackling sound, can not cross the legs, it is also difficult to squat, especially for A Fei trouble is running posture is very ugly, a jump, tall and handsome he is often laughed at by girls. Recently, Fei made up his mind to seek medical treatment at the Third Affiliated Hospital of Southern Medical University. After careful examination, Su Xun Tong, director of the Department of Orthopaedic Surgery, diagnosed gluteal fascia contracture, commonly known as “frog-legged man”, which required inpatient surgery. The most common cause of gluteofascial contracture is the scarring of the muscle contracture caused by more drug injections in the hip when the patient was a child, and there are also genetic and physical differences. The most common drugs injected intramuscularly are penicillin and drugs containing benzyl alcohol solvent. Patients tend to develop in children, with a peak at the age of 8-9 years, while adults rarely suffer from this disease. The prevalence is 1.1% in urban areas and up to 3.5%-4.5% in rural areas, which is related to the low level of medical care in rural areas and poor accuracy of drug preparation and injection sites. A common characteristic of these children is poor athletic performance, and no matter how hard they try, gluteal fascia contracture limits their ability to bounce. In addition, as the disease progresses, these children will develop atrophy of the upper hip area (pointed hip); running like jumping over (jumping step sign); unable to cross the legs when sitting; need to separate the knees to complete the squatting action (froggy); bilateral thick hip tendon pulling, flexion and extension of the hip joint will have a bouncing sound and other symptoms. Severe patients may have unequal length of both lower limbs or even lumbar scoliosis. The key to treating gluteus fascial contracture is to cut the contracted muscle strips of the gluteus maximus, which can be treated by minimally invasive arthroscopy, with a surgical incision of less than 0.5cm, and the patient can be on the ground the next day.