The pain of lifting the right thigh upward without moving may be related to leg muscle injury, sciatic nerve compression, hip joint disease and other diseases. 1. Leg muscle injury: generally because the leg muscles or ligaments have damage, which leads to the symptoms. Because the muscles and ligaments need a lot of strength to do the movement of lifting the leg upwards, when there is an injury, the muscles and ligaments will be pulled excessively, which will cause pain, and when they are not moved, the pulling will be lifted and there will be no pain. 2. Sciatic nerve compression: the lumbar disc herniation or pyriformis syndrome will compress the sciatic nerve. When the right thigh is lifted up, it will pull and stimulate the sciatic injury, which can cause pain when lifting the leg, manifested as a positive straight leg raising test, and no pain when the stimulation is reduced without moving. 3. Hip joint disease: such as hip tuberculosis, femoral head necrosis of the hip joint, hip synovitis, etc., the tissue lesions can lead to spasm of the local soft tissues, which can lead to radiating pain when lifting the leg, and it may not be painful when not moving. If the right side of the thigh upward lifting pain, do not move without pain, it is recommended to consult a doctor in time to identify the cause of the active treatment, so as not to delay the condition.