摘要
目的探讨CT重建辅助髋臼前后柱联合钢板后柱拉力螺钉导向模块的设计。方法收集2012年2月至2013年4月期间进行骨盆CT扫描的50例正常成人骨盆CT数据，男30例，女20例；年龄为25-69岁，平均46．4岁。将数据导入Mimics10．01软件重建半骨盆模型、虚拟置钉，测量进钉点（0）与弓状缘的距离（OP）、进钉点（0）在弓状缘上的垂点（P）与坐骨支后缘延长线交于弓状缘上一点（I）的距离（PI）、进钉方向与进钉平面长轴的夹角（∠θ）及进钉方向与进钉平面的夹角（∠φ），比较男、女性测量数据之间的差异。结果PI平均为（0．98±0．13）cm，其中女性为（1．08±0．22）cm，男性为（0．95±0．27）cm；OP平均为（1．09±0．26）cm，其中女性为（1．06±0．29）cm，男性为（1．12±0．24）cm；∠θ平均为55．43°±3．64°，其中女性为55．33°±4．00°，男性为55．50°±3．43°，以上项目男、女性之间比较差异均无统计学意义（P〉0．05）。∠φ：女性平均为39．21°±2．45°，男性平均为35．58°±2．31°，差异有统计学意义（P〈0．05）。结论在髋臼前后柱联合钢板后柱拉力螺钉导向模块的设计中，置钉孔的位置距离后缘及内侧缘的长度均应设计为1cm，而置钉方向与导向模块平面的夹角，女性大约呈39°，男性大约呈35°；男、女性置钉方向与导向模块长轴的夹角均大约呈55°.
Objective To report our self-designed guide module for placement of posterior column lag screws in anterior-posterior column acetabular plate using CT reconstruction data. Methods The CT scan data of 50 normal adult pelves were collected from February 2012 to April 2013, involving 30 males and 20 females with an average age of 46.4 years（range, from 25 to 69 years）. The data were imported into Mimics 10.01 software for reconstruction of semi-pelvic models. Virtual cylindrical implants were placed intraosseously in both the left and the right posterior columns. The perpendicular distance （OP） from the insertion point O of the virtual cylindrical implant to the arcuate margin （P） and the distance （PI） from the point P to the point I, the crosspoint of the extension line of the ischial ramus and the arcuate margin were measured respectively. The angle （∠φ） between the direction of screws and the plane of guide module and the angle （ ∠θ between the direction of screws and the long axis of guide module were also measured respectively. Results The average length of PI was 0. 98 ± 0.13 cm, with 1.08 ±0. 22 cm in females and 0.95 ± 0. 27 cm in males. The difference between genders was not statistically significant （ P 〉 0. 05）. The average length of OP was 1.09 ± 0. 26 cm, with 1.06 ± 0. 29 cm in females and 1.12 ± 0. 24 cm in males. The gender difference was not statistically significant either （ P 〉 0. 05）. The mean value of ∠θ was 55.43° ± 3.64°,with 55.33° ± 4. 00° in females and 55.50° ± 3.43° in males. The difference between genders was not statistically significant（ P 〉 0. 05）. The ∠φ value in females was 39.21° ± 2.45°and 35.58° ± 2.31° in males. The gender difference was statistically significant （ P 〈 0. 05） . Conclusions In design of the guide module, the nail holes should be located about 1 cm away from both the posterior edge and the medial edge, the angle between the screw direction and the module plane should be approximately 39° in females and 35° in males, and the angle between the screw direction and the long axis of the module approximately 55°.
出处
《中华创伤骨科杂志》
CAS
CSCD
北大核心
2016年第5期386-390,共5页
Chinese Journal of Orthopaedic Trauma
基金
广东省自然科学基金项目（10151051501000085）
