普通膝关节Ｘ线检查不能提供骨关节炎的确切情况 ,对制定治疗计划有一定影响。在日常工作中 ,我们发现有些病人普通膝关节Ｘ线检查显示关节间隙没有或仅有轻微狭窄 ,而术中却发现关节软骨已有大量缺失。最常受累的关节软骨带是膝关节屈曲 45°时关节面的接触部位。从 1 997年 4 Plain knee X-ray examination can not provide the exact situation of osteoarthritis, the treatment plan to develop a certain impact. In our daily work, we found that some patients with common knee X-ray examination showed no or only slight stenosis of articular space, but articular cartilage was found to have a large number of missing during surgery. The most commonly involved articular cartilage band is the contact area of ​​the articular surface at a knee flexion of 45 °. From 1997 to 4