Wang is 32 years old and usually enjoys sports. One year ago, he had pain in the right groin area. At first, Wang himself did not care about it, thinking that it might be a ligament injury caused by careless sports, rest for a period of time may be good, so did not pay attention to it, and continue to go to work every day, just no longer play soccer. However, three months later, the pain did not decrease, but rather there is a tendency to aggravate, even squatting has become painful. I had no choice but to go to the hospital for a checkup and X-ray, but the diagnostic report showed that there was no obvious abnormality in the hip joint. The doctor also said that there is no big problem, so give symptomatic treatment. After taking some oral anti-inflammatory painkillers, there was a slight improvement, but the pain still could not be eliminated. She was referred to several hospitals for examination and treatment, but there was no significant improvement. In the end, it was only after a special MRI examination that a clear diagnosis was made, and it turned out to be hip impingement syndrome. Xiao Wang’s problem lies in the acetabulum and femoral neck, which constitute the hip joint. There are many causes of hip impingement syndrome, both congenital and acquired. However, in young patients, hip impingement syndrome occurs when the femoral neck or acetabulum develops abnormally, causing the femoral neck and acetabulum to impinge on each other within their normal range of motion, resulting in hip pain. Over time, as the impingement worsens, the cartilage on the edge of the acetabulum or femoral head becomes damaged, and the pain gradually worsens. As the impingement mostly occurs when the hip is flexed and the impingement site is mainly located in the front of the hip joint, pain in the groin area often occurs, especially when squatting with the legs together. In addition, due to the young age of the patient, the onset of the disease is not long, the lesion occurs in a special place, and the lesion mainly involves cartilage tissue, so it is difficult to detect the existence of the lesion by ordinary X-ray examination. The usual MRI examination is also defective in clarifying the location and nature of the lesion. A special type of MRI examination of the hip joint can help to clarify the diagnosis. Therefore, patients with hip pain, especially in the groin area, should be examined early to make a definitive diagnosis. Once the diagnosis of hip impingement syndrome is clear, surgical exploration and treatment should be carried out as soon as possible. On the one hand, the lesion of the impingement should be repaired to minimize the chance of reoccurrence of the impingement, so as to eliminate the damage to the articular cartilage. On the other hand, the cartilage that has already been damaged should be cleaned up to prevent further expansion of the cartilage damage. If the onset of the disease is prolonged and the extent of cartilage damage is large, even if surgery is performed, the results will be compromised. Once the time for surgery is missed, as the extent of cartilage damage increases, osteoarthritis of the hip joint will eventually occur, which will seriously affect the patient’s work and quality of life.