Leg and hip pain should be a problem of the hip joint, common in the following cases: 1, ischemic necrosis of the femoral head, mainly manifested as pain in the groin and the front inner thigh, walking limp. A few people show pain in the lateral hip and medial knee, which is easily missed. 2, hip synovitis, similar to the symptoms of ischemic necrosis of the femoral head, but to a lesser extent. 3, hip osteoarthritis, common in the middle-aged and elderly, manifested as stiffness and pain in the hip joint in the morning, which can be reduced after activity and aggravated after exertion. 4, local muscle injury of the hip joint, divided into acute injury and chronic The former is mostly caused by trauma or strain of muscles due to strenuous exercise, while the latter is mostly caused by prolonged standing and walking or excessive exercise. 5, fractures around the hip joint, mostly with obvious history of trauma, such as femoral neck fracture and femoral trochanter fracture caused by fall, are common in the elderly, with severe pain and inability to walk. It is worth noting that some elderly patients are caused by severe osteoporosis and have no obvious history of trauma, but they can also have fractures, such as pelvic fracture and femoral neck fracture, which also have severe pain and difficulty in moving. 6, other diseases, such as hip joint tumor, septic hip arthritis, etc., can also cause pain.