The pain in the inner thigh tendon may be caused by excessive exercise, or pear-shaped muscle syndrome, lumbar disc herniation and other diseases. 1. Excessive exercise: If the recent frequent high-intensity exercise of the lower limbs, resulting in excessive exercise, affecting the local blood circulation, followed by a large number of metabolites will accumulate in the legs, so there will be a lift thigh thigh pain in the medial thigh tendon. 2. Piriformis syndrome: the disease is mainly caused by the sciatic nerve in the region of the piriformis muscle is stuck pressure, may be related to scar formation, fiber contracture, hip sprain and other factors. Typical symptom is sciatica, so the patient will have the performance of the inner thigh tendon pain when lifting the leg. 3. Lumbar intervertebral disc herniation: the occurrence of this disease may be related to heredity, intervertebral disc injury, lumbar spine developmental anomalies, intervertebral disc degeneration and other factors, can be triggered by acute trauma, overwork and other factors, because this disease can also cause sciatica, so it will also occur when you lift your leg with a painful medial thigh tendon symptoms. It is recommended that patients who have pain in the medial thigh tendon go to the hospital, complete the relevant examination and clarify the specific cause of the disease.