Objective To study the diagnosis and treatment of ethyl alcohol necrosis of femoral head.Methods We have analyzed the causes of 29 cases necrosis of femoral head and devised three kinds of operation:greater trochanter bone flap with pediclc blood vessels,part of femoral head reconstruction and overall femoral head reconstructions and followed up 1.5-12 years.Results In these cases, the only cause in drinking alcohol. No other cause, the good effect rate is 58.8%, the bad effect rate is 10.3%, because the...