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目的：为骶骨置入螺钉固定术提供解剖学基础。方法：在１８例（３６侧）成尸脊柱标本上，解剖观测骶骨置入螺钉入路的安全区、置钉点、角度和深距。并在尸体上摹拟了术式。结果：骶骨背面有２个置钉安全区域，腰５骶１关节囊下安全区左右径６．０±１．２ｍｍ，上下径８．６±１．４ｍｍ。外侧安全区左右径９．１±２．１ｍｍ，上下径９．７±２．３ｍｍ。螺钉向内偏斜１５．１°～２２．９°，向尾侧偏斜５８．４°～６４．４°，向头侧偏斜６７．８°±９．３°。置钉深距３８．２～４８．０ｍｍ。结论：本文为从骶骨背面安全区域置钉至骶１、第５腰椎体前皮质固定术提供了应用解剖学
Objective: To provide an anatomical basis for sacral screw fixation. Methods: In 18 cases (36 sides) of the adult spine specimens, anatomical observation of sacral screw into the safety zone, set the nail point, angle and deep. And in the body on the simulated surgery. Results: There were 2 nail safety areas on the back of the sacrum, 6.0 ± 1.2 mm in diameter and 6.0 ± 1.2 mm in diameter in the safety zone under the lumbosacral sac. Outside the safety zone about 9.1 ± 2.1mm diameter, diameter 9.7 ± 2.3mm. The screws deflected 15.1 ° to 22.9 ° inwards, skewed 58.4 ° to 64.4 ° to the caudal side, and 67.8 ° ± 9.3 ° to the head side. Set nail depth 38.2 ~ 48.0mm. CONCLUSIONS: This article provides an anatomic study of the anterior cortical fixation of the 5th lumbar vertebral body from the staple to the sacral 1 in the safe area of the sacrum