In daily life, patients often experience soreness in the thighs. There are many clinical conditions that can cause this phenomenon, such as femoral head necrosis. In the early stage of femoral head necrosis, patients may experience soreness in the thighs or knees, and positive pressure pain in the groin. If the patient suffers from muscle and tissue damage due to overexertion, strain, or cold in the thigh area, he or she will also experience constant soreness in the thigh area, which will be significantly relieved after rest. If the patient suffers from lumbar disc herniation, the herniated nucleus pulposus compresses the dural sac and stimulates the nerve roots, which also leads to soreness in the thigh area, accompanied by numbness, tingling and weakness of the skin.