The pathogenesis is the repeated wear and tear of the transverse process of the third lumbar vertebra and its surrounding muscles and fascia, resulting in exudation, hyperplasia, degeneration and other pathological changes in the soft tissues around the transverse process of the third lumbar vertebra, leading to adhesions between the transverse process of the third lumbar vertebra and its surrounding soft tissues and hyperplasia, degeneration and contracture of the soft tissues around the transverse process of the third lumbar vertebra. Symptoms The symptoms include soreness and swelling pain in the affected lumbar region, radiating to the affected thigh, and radiating pain to the knee joint; limited turning and lumbar rotation activities, inability to cross the legs, and limited activities in shoes and socks. The pain can reach the hip and front of the thigh. The pain is not painful when the lumbar region is tilted back, and bending to the opposite side is limited. Signs The outer edge of the transverse process of the third lumbar vertebra, which corresponds to the 4cm opening of the spinous process of the third lumbar vertebra, is painful to the thigh and knee due to the stimulation of the second lumbar nerve branch when pressed. The pain is not intermittent claudication. Diagnostic points: (1) It occurs in middle-aged and elderly patients, (2) there is a history of lumbar trauma or strain, (3) there is pressure pain at the tip of the transverse process of the third lumbar vertebra, radiating to the thigh, (4) there is limitation of turning, shoe and stocking activities, (5) the disease needs to be differentiated from lumbar paravertebral herniation, acute sacral joint sprain and pear-shaped muscle injury. Treatment measures: (1) external medication and oral anti-inflammatory and analgesic drugs, (2) acupuncture, massage, physiotherapy, (3) local closure treatment, (4) acupuncture treatment.