How long it takes to recover from early to intermediate stage of necrosis of the femoral head varies from person to person, and it is related to the speed of progression of the disease, usually within a few months or a year. Necrosis of the femoral head can be clinically divided into four stages, the early stage of necrosis of the femoral head generally refers to the first stage of necrosis of the femoral head, the middle stage of necrosis of the femoral head generally refers to the second stage of necrosis of the femoral head and the third stage of necrosis of the femoral head, which is related to the progress of the disease. How long it takes to recover from early to intermediate stage of osteonecrosis of the femoral head varies from person to person, usually within a few months or a year. For patients with necrosis of the femoral head, if they are actively treated in the early stage of the disease, they can keep the femoral head from collapsing and maintain the shape of the femoral head, which can effectively control the further development of the disease and even achieve a cure. If patients do not take relevant treatment and their own repair ability is poor, the disease will rapidly develop to the middle and late stages. Therefore, for patients with necrosis of the femoral head, the time from early to mid-stage of the disease needs to be determined by the combination of their own physical condition and the effect of treatment, and cannot be generalized. For patients with necrosis of the femoral head, early detection and early treatment should be done to avoid delaying the condition.