The results: the path length and candal angle for TLS increased gradually from T12L1 to L5S1 level ( 30mm to 48mm, 38# to 57#, respectively), the lateral angle relative to the coronal plane was 28 -30?

• 结果：自T_(12)L_1到L_5 S_1钉道长度逐渐增加，分别为36mm和48mm； 钉道与尾侧成角自上向下逐渐增加，分别为38°和57°；