Thigh bone and hip bone joint pain consider muscle strain, femoral head necrosis, synovitis, osteoarthritis, bone fracture. 1. Muscle strain: If you often exercise strenuously or often stilt leg action is easy to cause the thigh and hip bone joint muscle chronic strain caused by pain. 2. Necrosis of femoral head: ischemic necrosis of femoral head causes pain in hip joint, activity limitation and intermittent claudication. 3. Synovitis: Synovial hyperplasia and secretion of fluid due to strenuous exercise or infection, resulting in pain in the hip bone and obvious pain when walking or running. 4. Osteoarthritis: Joint degeneration and hyperplasia, narrowing of the joint space can cause pain at the joint between the thigh bone and hip bone. 5. Fracture: If there is trauma, activity is limited to consider the possibility of fracture, need to take X-ray clear. So there are many reasons for the pain at the joint of thigh bone and hip bone, you should go to the hospital for examination and treatment under the guidance of the doctor.