Necrosis of the femoral head with effusion is mainly considered to be related to prolonged insufficient blood supply to the femoral head as well as inflammation, etc. It is necessary to choose the treatment plan according to the severity, such as shockwave treatment, medication and surgical treatment. 1. Shock wave therapy: If the necrosis of the femoral head with effusion is not particularly serious and does not produce obvious structural changes of the femoral head, shock wave therapy can be considered as a treatment method to improve local blood circulation and thus relieve the symptoms. 2. Medication: Patients with femoral head necrosis with hip joint effusion can take anti-inflammatory and pain relieving drugs such as Meloxicam as prescribed by the doctor, which can help to promote the absorption of the effusion. You can also take alendronate, medroxyprogesterone and other drugs to inhibit osteoclasts and increase osteogenesis; anticoagulant drugs combined with vasodilator drugs such as low molecular heparin, prostaglandin, etc., in order to slow down the progress of necrosis of the femoral head. 3. Surgery: If the femoral head necrosis with effusion is more serious, and structural changes have already occurred, affecting the function of the hip joint, we can not rule out the need for treatment through surgical methods, such as hip replacement surgery. Specific femoral head necrosis with effusion treatment needs to be carried out under the guidance of a professional physician, usually pay attention to weight control, as far as possible to reduce the load on the hip joint, do not excessive weight-bearing exercise, do not blindly use drugs.