Piriformis syndrome is a series of symptoms mainly manifested by pain in the buttock or lumbosacral region due to local pathological changes such as edema and contracture of the piriformis muscle caused by trauma, inflammation, or due to its own anatomical abnormality, which leads to compression of nerves and blood vessels around the piriformis muscle and local circulatory disorders. About the Pearly Muscle Although the pear muscle is a very small muscle in our body, but because of its special anatomical location and close relationship with the surrounding tissues, it will cause a lot of pain to people after the lesion, so it is particularly important. So where is the pyriformis muscle? The pyriformis is a deep muscle of the buttocks, which starts from the anterior side of the 2nd to 4th sacral bones, and divides into the superior and inferior foramina of the pyriformis muscle when it passes through the foramen magnum of the sciatica (in the superior foramen of the pyriformis muscle there are the superior gluteal nerves and superior gluteal motions and veins passing through it, while in the inferior foramina of the pyriformis muscle there are the sciatic nerves, pubic nerves, posterior cutaneous nerve of the femur, inferior gluteal nerves, inferior gluteal motions, veins, and internal pubic motions and veins passing through it), and it finally attaches to the greater trochanter of the femur. Etiology Due to the lower limb excessive external rotation and abduction, sudden standing and other actions caused by the excessive stretching of the pudendal muscle or action process is blocked, encountered violence, thus causing pudendal muscle injury, in a small number of patients can be due to pelvic inflammation, sacroiliac arthritis and other peripheral tissues disease invasion of the pudendal muscle caused by the inflammatory reaction. In addition, according to the research, the injured people usually do not have enough exercise, the lower limb strength and hip joint flexibility is poor, and the BMI is higher than normal people. Clinical manifestations The main clinical manifestations are hip or lumbosacral pain, often radiating to the posterior and posterior-lateral lower limbs of the same side, walking with a limp, numbness of the lateral calf, perineal discomfort, coughing, sneezing and other causes of abdominal pressure or internal rotation of the joints and other positional changes in the pain aggravated, and severe patients even burning, cutting pain and affect their own sleep, diet and mental state, which will make the patient’s lower extremities The patients’ lower limb activities are limited and they cannot take care of themselves. Diagnosis Most of the patients have a history of trauma such as “flash”, “twist”, “sudden uprightness” or “weight-bearing walking”, and a small number of patients have a history of trauma caused by cold. Most patients have a history of trauma such as “flash”, “twist”, “sudden uprightness” or “weight-bearing walking”, and a small number of patients have a history of cold or no obvious trauma, and then they have pain in the buttocks and lumbosacral region that radiates to the lower limbs, and it is aggravated by the increase of abdominal pressure or change of the body position. Examination: 1, straight leg raising test at 60 ° before the appearance of pain, 60 ° after the pain instead of reducing; 2, deep palpation of the buttocks appear pressure pain, and there are strips of bulging muscle bundles; 3, supine position, the affected limb from the straightening to do the inward, inward movement, there is radiating pain, and then do the external rotation, adduction movement can be relieved; 4, lateral calf, perineum, and other areas of innervation numbness; 5, the X-ray performance is not obvious abnormality. Treatment Treatment Conservative therapy includes: 1, the use of dexamethasone, procaine and other drugs in the local injection of local closure therapy; 2, manipulative therapy, the application of traditional Chinese medicine massage methods to relieve spasm, pain, improve circulation; 3, ultrasound physiotherapy; 4, taking Chinese herbs to relieve pain and eliminate blood stasis; 5, acupuncture to relieve muscle pain. In addition to the above methods of treatment is ineffective for patients to perform surgical treatment to loosen the adhesion of the tendon, to relieve its pressure on the surrounding tissues. Prevention Participate in physical exercise at ordinary times, and practice lateral leg press, lateral kicking and other movements to strengthen the lower limb strength and joint flexibility, and pay attention to the action, do not injure the pyriformis muscle during exercise.