The serum ALP, BGP and mechanics character of femoral head were detected.The form and construction of the femoral heads were observed under light microscope and scanning electron microscope.

• 测定血清碱性磷酸酶(ALP)、骨钙素(BGP)，测试股骨头力学性质，通过光镜和扫描电镜观察股骨头的形态结构。