Conservative treatment of osteonecrosis of the femoral head usually allows for release from crutches in 6 months to 1 year. Choosing the right treatment can also relieve the symptoms and shorten the time on crutches. Conservative treatment methods generally used in clinical practice include: vasodilator drugs, non-steroidal anti-inflammatory drugs, use of dehydrating agents, physiotherapy, etc. 1. Vasodilator drugs: Prostadil and other vasodilator drugs can be used to improve blood circulation in the femoral head and increase the local repair capacity. 2. Non-steroidal anti-inflammatory drugs (NSAIDs): NSAIDs such as diclofenac, etoricoxib, celecoxib, etc. can be used to relieve local pain. 3. Use of dehydrating agents: femoral head necrosis can lead to increased pressure in the bone marrow cavity, and can use mannitol dehydrating agent to reduce bone marrow edema and improve symptoms. 4. Physical therapy: such as high-frequency electromagnetic field stimulation therapy, extracorporeal shock wave therapy. In addition, patients can reduce their own weight to reduce the pressure on the femoral head to relieve pain. The time of abduction is also related to the patient’s age and physical condition, so it is recommended that the patient choose the time of abduction according to his/her own condition after consulting with a professional doctor. The use of medication should be in accordance with medical advice.