It suggested that the thickness of the subchondral bone is important in keeping the strength of femoral head and preventing deterioration of subchondral bone of the femoral head early. 3.

• 2、股骨头软骨下骨皮质骨的厚度、皮质骨的面积、骨小梁的体积和结构刚度、骨密度存在着正相关性，其中皮质骨的厚度和结构刚度、骨密度相关性强，说明股骨头软骨下骨的厚度对保持股骨头区力学的强度、早期预防股骨头软骨下骨的塌陷等方面可能有重要的作用。