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首页> 外文期刊>Injury >Can the possibility of transverse iliosacral screw fixation for first sacral segment be predicted preoperatively? Results of a computational cadaveric study
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Can the possibility of transverse iliosacral screw fixation for first sacral segment be predicted preoperatively? Results of a computational cadaveric study

机译：术前预先预测第一骶部横向ILIOSACRAL螺钉固定的可能性吗？ 计算尸体研究的结果

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Abstract Objectives The purpose of this study was to predict the possibility of transverse iliosacral (TIS) screw fixation into the first sacral segment (S 1 ) and introduce practical anatomical variables using conventional computed tomography (CT) scans. Materials and methods A total of 82 cadaveric sacra (42 males and 40 females) were used for continuous 1.0-mm slice CT scans, which were imported into Mimics ? software to produce a three-dimensional pelvis model. The anterior height (BH) and superior width (BW) of the elevated sacral segment was measured, followed by verification of the safe zone (SZ S1 and SZ S2 ) in a true lateral view. Their vertical (VD S1 and VD S2 ) and horizontal (HD S1 and HD S2 ) distances were measured. VD S1 less than 7mm was classified as impossible sacrum, since the transverse fixation of 7.0 mm-sized IS screw could not be done safely. Results Fourteen models (16.7%; six females, eight males) were assigned as the impossible sacrum. There was no statistical significance regarding gender ( p =0.626) and height ( p =0.419). The average values were as follows: BW, 31.4mm (SD 2.9); BH, 16.7mm (SD 6.8); VD S1 , 13.4mm (SD 6.1); HD S1 , 22.5mm (SD 4.5); SZ S1 , 239.5mm 2 (SD 137.1); VD S2 , 15.5mm (SD 3.0); HD S2 , 18.3mm (SD 2.9); and SZ S2 , 221.1mm 2 (SD 68.5). Logistic regression analysis identified BH ( p =0.001) and HD S1 ( p =0.02) as the only statistically significant variables to predict the possibility. Receiver operating characteristic curve analysis established a cut-off value for BH and HD S1 of impossible sacrum of 20.6mm and 18.6mm, respectively. Conclusion BH and HD S1 could be used to predict the possibility of TIS screw fixation. If the BH exceeds 20.6mm or HD S1 is less than 18.6mm, TIS screw fixation for S 1 should not be undertaken because of narrowed SZ. ]]>
机译：摘要目的本研究的目的是预测横向ILIOSacral（TIS）螺钉固定到第一骶部（S1）中的可能性，并使用常规计算断层扫描（CT）扫描引入实际解剖变量。材料和方法共82名蜂鸣囊（42名男性和40名女性）用于连续1.0毫米切片CT扫描，其进口到模仿中？软件生产三维骨盆模型。测量升高的骶段的前高度（BH）和优异宽度（BW），然后在真正的横向视图中验证安全区（SZ S1和SZ S2）。测量其垂直（VD S1和VD S2）和水平（HD S1和HD S2）距离。 VD S1小于7mm被归类为不可能的骶骨，因为7.0 mm尺寸的横向固定是螺钉无法安全地进行。结果十四型号（16.7％;六个女性，八个男性）被分配为不可能的骶骨。关于性别（P = 0.626）和高度没有统计学意义（P = 0.419）。平均值如下：BW，31.4mm（SD 2.9）; BH，16.7mm（SD 6.8）; VD S1,13.4mm（SD 6.1）; HD S1,22.5mm（SD 4.5）; SZ S1,239.5mm 2（SD 137.1）; VD S2，15.5mm（SD 3.0）; HD S2,18.3mm（SD 2.9）;和SZ S2，221.1mm 2（SD 68.5）。 Logistic回归分析识别BH（P = 0.001）和HD S1（P = 0.02），作为唯一有统计学上有显着的变量，以预测可能性。接收器操作特征曲线分析分别建立了20.6mm和18.6mm的不可能骶骨的BH和HD S1的截止值。结论BH和HD S1可用于预测TIS螺钉固定的可能性。如果BH超过20.6mm或HD S1小于18.6mm，则由于SZ狭窄而不应进行S 1的TIS螺钉固定。 ]]>

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