3D CT Analysis of Combined Cup and Stem Anteversion in Cases of Cup Navigation in Hip Arthroplasty

被引：13
|
作者：
Wassilew, Georgi I. [1 ]
Perka, Carsten [1 ]
Koenig, Christian [2 ]
Janz, Viktor [1 ]
Asbach, Patrick [3 ]
Hasart, Olaf [1 ]
机构：
[1] Charite, Dept Orthoped, Ctr Musculoskeletal Surg, D-10117 Berlin, Germany
[2] Charite, Julius Wolff Inst, D-13353 Berlin, Germany
[3] Charite, Dept Radiol, Charite, D-13353 Berlin, Germany
来源：
ORTHOPEDICS | 2010年 / 33卷 / 10期
关键词：
ACETABULAR COMPONENT; ORIENTATION; DISLOCATION; ALIGNMENT; ACCURACY; POSITION; MOTION; RANGE; FEMUR; WEAR;
D O I：
10.3928/01477447-20100510-53
中图分类号：
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];
学科分类号：
摘要：
Navigation of the cup in total hip arthroplasty is well analyzed and shows accurate results, reducing cup outliers of Lewinnek's "safe zone." With regard to the combined anteversion of cup and stem, however, a "new" safe zone with a range of 25 degrees to 50 degrees has been published. The aim of this study was to analyze total anteversion (cup and stem) by postoperative 3D computed tomography in isolated cup navigation cases. In 46 patients, the mean combined anteversion was 34.4 degrees (range, 16.3 degrees-57.3 degrees, SD +/- 9.3 degrees) with 10 outliers. The mean cup anteversion was 19.5 degrees (range, 11 degrees-27 degrees, SD +/- 3.7 degrees). Regarding Lewinnek's "safe zone" (cup only), we observed 5 outliers. An improvement of technique of stem implantation or navigation may reduce outliers of combined anteversion.
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页码：48 / 51
页数：4
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