Tailor-made Surgical Guide Reduces Incidence of Outliers of Cup Placement

被引:42
作者
Hananouchi, Takehito [1 ]
Saito, Masanobu [2 ]
Koyama, Tsuyoshi [2 ]
Sugano, Nobuhiko [3 ]
Yoshikawa, Hideki [1 ]
机构
[1] Osaka Univ, Grad Sch Med, Dept Orthopaed Surg, Suita, Osaka 5650871, Japan
[2] Osaka Minami Med Ctr, Dept Orthopaed Surg, Osaka, Japan
[3] Osaka Univ, Grad Sch Med, Dept Orthopaed Med Engn, Suita, Osaka 5650871, Japan
基金
日本学术振兴会;
关键词
TOTAL HIP-ARTHROPLASTY; IMAGELESS NAVIGATION; COMPONENT; ACCURACY; TEMPLATES; INSERTION;
D O I
10.1007/s11999-009-0994-4
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
100224 [整形外科学];
摘要
Malalignment of the cup in total hip arthroplasty (THA) increases the risks of postoperative complications such as neck cup impingement, dislocation, and wear. We asked whether a tailor-made surgical guide based on CT images would reduce the incidence of outliers beyond 10 degrees from preoperatively planned alignment of the cup compared with those without the surgical guide. We prospectively followed 38 patients (38 hips, Group 1) having primary THA with the conventional technique and 31 patients (31 hips, Group 2) using the surgical guide. We designed the guide for Group 2 based on CT images and fixed it to the acetabular edge with a Kirschner wire to indicate the planned cup direction. Postoperative CT images showed the guide reduced the number of outliers compared with the conventional method (Group 1, 23.7%; Group 2, 0%). The surgical guide provided more reliable cup insertion compared with conventional techniques.
引用
收藏
页码:1088 / 1095
页数:8
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