Definition of a safe zone for antegrade lag screw fixation of fracture of posterior column of the acetabulum by 3D technology
Definition of a safe zone for antegrade lag screw fixation of fracture of posterior column of the acetabulum by 3D technology
复制标题
3D技术定义顺行拉力螺钉固定髋臼后柱骨折的安全区
DOI：
10.1016/j.injury.2016.01.026
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发表时间：
2016-03-01
影响因子：
2.5
通讯作者：
Chen, Bin
中科院分区：
文献类型：
--
作者：
Feng, Xiaoreng;Zhang, Sheng;Chen, Bin
本研究的目的是使用一种新的3D技术确定髋臼后柱骨折顺行拉力螺钉固定的安全区。获得59名人类受试者的骨盆CT数据以重建三维（3D）模型。然后沿着轴向透视（垂直于后柱轴横截面的视图）降低3D模型的透明度，以找到最大的半透明区域。在髂窝上绘制最大半透明区域的轮廓。精确测量OA、AB、OC、CD的线段及OAB、OCD的安全区（ABDC）角度。得到的线段OA、AB、OC、CD以及角度OAB和OCD为28.46 mm（13.15-44.97毫米）、45.89毫米（34.21-62.85 mm）、36.34 mm（18.68-55.56 mm）、53.08 mm（38.72-75.79 mm）、37.44度（24.32-54.96度）和55.78度（43.97-79.35度）。本研究表明，计算机辅助3D建模技术可以帮助精确定义后柱拉力螺钉顺行插入的安全区。全长拉力螺钉可插入该区域（ABDC），允许较大的操作误差。(C)2016爱思唯尔有限公司版权所有
The objective of this study was to define a safe zone for antegrade lag screw fixation of fracture of posterior column of the acetabulum using a novel 3D technology. Pelvic CT data of 59 human subjects were obtained to reconstruct three-dimensional (3D) models. The transparency of 3D models was then downgraded along the axial perspective (the view perpendicular to the cross section of the posterior column axis) to find the largest translucent area. The outline of the largest translucent area was drawn on the iliac fossa. The line segments of OA, AB, OC, CD, the angles of OAB and OCD that delineate the safe zone (ABDC) were precisely measured. The resultant line segments OA, AB, OC, CD, and angles OAB and OCD were 28.46 mm(13.15-44.97 mm), 45.89 mm (34.21-62.85 mm), 36.34 mm (18.68-55.56 mm), 53.08 mm (38.72-75.79 mm), 37.44 degrees (24.32-54.96 degrees) and 55.78 degrees (43.97-79.35 degrees) respectively. This study demonstrates that computer-assisted 3D modelling techniques can aid in the precise definition of the safe zone for antegrade insertion of posterior column lag screws. A full-length lag screw can be inserted into the zone (ABDC), permitting a larger operational error. (C) 2016 Elsevier Ltd. All rights reserved.