The most common clinical cause of left buttock tendon pain is lumbar disc herniation, in which a herniated disc or nucleus pulposus compresses or stimulates a nerve, resulting in radiating pain or pulling-like pain in the muscles of the innervated area, and if the compression is prolonged, paralysis may also occur. The most common clinical condition is lumbar 4-5 or lumbar 5-sacral 1 disc herniation. In the case of lumbar 4-5 disc herniation, the nerve root of lumbar 5 is usually compressed, resulting in radiating pain in the hip, posterior thigh, lateral calf and other areas. In the case of lumbar 5-sacral 1 disc herniation, it usually compresses the sacral 1 nerve root, resulting in radiating pain or numbness in areas such as the buttocks, posterior thigh, popliteal fossa, posterior calf, and plantar aspect of the foot. The correct treatment plan for the above situation is to first improve the CT or MRI examination of the lumbar spine to clarify the segment and direction of the herniated disc, and then choose the appropriate treatment plan according to the degree of herniation. The vast majority of patients can choose conservative treatment, while a small number of patients may need surgery, and if surgery is needed, minimally invasive surgery is usually the main treatment.