Redefining the Acetabular Component Safe Zone for Posterior Approach Total Hip Arthroplasty
Redefining the Acetabular Component Safe Zone for Posterior Approach Total Hip Arthroplasty
复制标题
DOI：
10.1016/j.arth.2015.09.010
复制
发表时间：
2016-02-01
影响因子：
3.5
通讯作者：
Macaulay, William
中科院分区：
文献类型：
--
作者：
Danoff, Jonathan R.;Bobman, Jacob T.;Macaulay, William
背景：全髋关节置换术（THA）中髋臼假体的方向影响关节稳定性。本研究的目的是评估影响杯的方向和其他变量对髋关节脱位的风险，并确定一个后入路特定的安全区。方法：一个队列的1289后路原发性THA病例进行前瞻性随访和组件的位置测量radiographics.Results：杯错位，相对于Lewinnek安全区，是一个独立的危险因素脱位（OR 1.88）。将前倾角安全区限值修改为10-25强烈预测脱位风险增加（OR 2.69）。结论：采用后入路技术，在前倾角10-25 °，外展30-50 °的安全区内，可减少THA脱位的发生。
Background: Acetabular component orientation influences joint stability in total hip arthroplasty (THA). The purpose of this study was to evaluate the effect of cup orientation and other variables on hip dislocation risk and to define a posterior approach specific safe zone.Methods: A cohort of 1289 posterior approach primary THA cases was prospectively followed and component position measured radiographically.Results: Cup malposition, with respect to the Lewinnek safe zone, was an independent risk factor for dislocation (OR1.88). Modifying the anteversion safe zone limits to 10-25 strongly predicted increased dislocation risk (OR2.69). No dislocations occurred within a zone defined by a circle centered at 41.4 degrees abduction and 17.1 degrees anteversion, radius 4.3 degrees.Conclusion: Utilizing a posterior postenor approach specific safe zone of 10-25 degrees anteversion and 30-50 degrees abduction may minimize THA dislocations.