Ischemic necrosis of the femoral head is a very difficult disease to cure, at present, a variety of conservative treatment (non-surgical) methods, how effective? 1, drug therapy: including vasodilating drugs, anticoagulant drugs, tethering drugs, lipid-lowering drugs, drugs to inhibit bone resorption, drugs to increase calcium absorption, Chinese medicine and other medications, are not systematic, rigorous, scientific clinical research, there is no certainty of the efficacy of the drugs can be a certain pain relieving effect, can be a momentary relief of the symptoms, but can not cure ischemic necrosis of the femoral head! However, it cannot cure the ischemic necrosis of the femoral head, and the osteonecrosis will continue to develop. Ischemic necrosis of the femoral head cured only by medication is very rare or almost none in clinical practice. 2.Physical rehabilitation therapy: including electrical stimulation Electrical stimulation, High-energy shock wave, Hyperbaric oxygen Hyperbaric oxygen, Ultrasonography and body therapy, Traditional Chinese medicine cupping, acupuncture and other therapies, although these therapies can also relieve the clinical symptoms, but it is difficult to cure ischemic necrosis of the femoral head. Although these treatments can relieve the clinical symptoms for a while, it is difficult to cure osteonecrosis. 3.Interventional therapy: femoral head vascular intervention therapy: is a kind of femoral artery through the opposite (the same) side of the femoral artery will be inserted into the femoral artery → deep femoral artery → rotary medial femoral artery, through the catheter directly injected into the rotary medial femoral artery anticoagulant or thrombolytic drugs. The aim is to recanalize the occluded femoral vessels by the action of thrombolytic or anticoagulant drugs. The principle of femoral head vascular thrombolysis comes from coronary angiography and thrombolysis, but the problem is: coronary thrombolysis is effective within 3 hours of arterial occlusion, and the effect is not obvious beyond this time limit; femoral head vascular occlusion occurs at least a few months before the thrombolytic or anticoagulant drugs will hardly have an effect; the vascular occlusion of osteoradionecrosis occurs in capillaries within the femoral head, and it is a damage of microcirculation within the femoral head, which is completely different from the mechanism of coronary occlusion. The mechanism of coronary artery occlusion is completely different from that of coronary artery occlusion, therefore, the methods that are effective in the treatment of coronary artery occlusion are ineffective in osteonecrosis. The cytotoxicity of thrombolytic drugs and pressurized injection of drugs may cause damage to vascular endothelial cells, leading to further occlusion of blood vessels, further destruction of blood flow in the femoral head and acceleration of the process of (severe) osteonecrosis. Therefore, interventional therapy is an unhelpful or even harmful treatment. To summarize, conservative treatment (non-surgical) of ischemic necrosis of the femoral head is a kind of treatment with inconspicuous efficacy and uncertain effect. Often, the valuable time for early surgical-head-preserving treatment is missed as a result. Current research and clinical practice indicate that conservative treatment may provide temporary relief of symptoms, but the possibility of curing osteonecrosis is unlikely. As foreign scholars Mont and colleagues reviewed 21 studies of 819 hips with 34 months (range 20 months-10 years) of follow-up reports, and found that the femoral head survival rate of patients with ischemic necrosis of the femoral head treated conservatively was only 22%. This is significantly lower than the survival rate of surgical treatment (50% – 90%). Therefore, it is believed that conservative treatment of ischemic necrosis of the femoral head is actually “accelerating” the process of patients undergoing artificial arthroplasty.