In terms of femoral head lesions alone, there can be necrosis of the femoral head, bone cysts of the femoral head or fractures of the femoral head, with different causes for different lesions. Necrosis of the femoral head is mostly caused by previous trauma to the hip joint, such as fractures, dislocations, or prolonged and heavy use of hormones and alcohol consumption. Most of the femoral head bone cysts do not have any special cause and do not necessarily have clinical symptoms, most of them are found by chance during physical examination or other lesion examination, and a few of them are found when there is external injury, resulting in pathological fracture. Fractures in the femoral head area are definitely due to external injuries, such as fall injuries, car accidents, falls, etc., which should be inferred from the results of the examination itself or whether there are external injuries. However, no matter which kind of lesion, it is very harmful to the femoral head, and you should strive for active treatment when it occurs.