Two widely used methods, currently practiced method and anteversion definited method, were used to measure the anteversion angle after the head, neck and the condylar was scanned.

• 分别用临床常用法(测量头颈横切面中轴与股骨髁轴间的夹角)及符合前倾角定义的定义法(测量股骨头颈轴与股骨髁轴间的夹角)测量前倾角，比较其结果。