Tian Xiguang, Li Jiazhen, Sheng Weichao, Qu Dongbin, Ouyang Jun, Xu Dachuan, Chen Shenghua, Ding Zihai
Department of Anatomy, Southern Medical University, 510515, Guangzhou, China.
Surg Radiol Anat. 2010 Jun;32(5):455-62. doi: 10.1007/s00276-009-0589-5. Epub 2009 Nov 20.
To describe the morphometry of iliac columns for transiliac screw and to testify the conformity among the anatomic measurement, two-dimensional (2D) and three-dimensional (3D) computed tomography.
We evaluated the length, inner width, and angle of three screw trajectories starting at the iliac tubercle, posterior superior iliac spine, and posterior inferior iliac spine toward the anterior inferior iliac spine. Measurements were made on specimen, two- and 3D computed tomography using 18 embalmed cadaveric pelves.
There was no significant difference among three measure methods. The path between the posterior superior iliac spine and anterior inferior iliac spine had the largest iliac column length, with 135 mm in male and 110 mm in female. The canal allowed placement of 8-mm screw in male and 6.5 mm in female with the angle of 25 degrees laterally directed from the midsagittal plane. The line between the posterior inferior iliac spine and anterior inferior iliac spine was below or just located at the top of greater sciatic notch in the majority measurements. The safe section for transiliac screw approximately located above the greater sciatic notch and could be divided into anterior and posterior parts.
The measurements among anatomic measurement, 2D and 3D computed tomography are consistent. The screw path from the posterior superior iliac spine toward anterior inferior iliac spine provided the longest anchor site. At the same time, the line between the posterior inferior iliac spine and anterior inferior iliac spine is not available for transiliac screw insertion of eastern population. The posterior of the safe section also can be regarded as another ilium anchorage area for transiliac screws.
描述用于经髂螺钉的髂骨柱形态，并验证解剖测量、二维（2D）和三维（3D）计算机断层扫描之间的一致性。
我们评估了从髂结节、髂后上棘和髂后下棘向前下棘起始的三条螺钉轨迹的长度、内部宽度和角度。使用18具防腐处理的尸体骨盆在标本、二维和三维计算机断层扫描上进行测量。
三种测量方法之间无显著差异。髂后上棘和前下棘之间的路径髂骨柱长度最大，男性为135mm，女性为110mm。该通道可容纳男性8mm的螺钉和女性6.5mm的螺钉，角度为从矢状面外侧25度。在大多数测量中，髂后下棘和前下棘之间的连线位于坐骨大切迹下方或刚好位于其顶部。经髂螺钉的安全区域大致位于坐骨大切迹上方，可分为前后两部分。
解剖测量、二维和三维计算机断层扫描之间的测量结果一致。从髂后上棘到前下棘的螺钉路径提供了最长的锚固部位。同时，对于东方人群，髂后下棘和前下棘之间的连线不可用于经髂螺钉置入。安全区域的后部也可被视为经髂螺钉的另一个髂骨锚固区域。
