Thigh X-ray is a safe and painless test that uses a small amount of radiation to make an image of a person’s upper leg. Thigh X-ray can help find the cause of symptoms such as pain, limp, tenderness, swelling, or deformity of the upper leg. It can detect a broken bone, and after a broken bone has been set, it can help determine whether the bone is in satisfactory alignment. If surgery of the upper leg is required, an X-ray may be taken to plan for the surgery and to assess the results of the operation. X-ray can help detect cysts, tumours.