Method:Anterior and posterior pedicular height,pedicular depth,alar depth,and posterior alar height of S1 vertebrae were measured in 11 cadaver bony pelves bilaterally.

• 方法:测量16具尸体骨盆标本双侧S1椎弓根前后缘的高度、深度(S1椎弓根最狭窄处的宽度)、骶翼深度、骶翼高度。