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KMID : 1028220130250010030
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Hip & Pelvis
2013 Volume.25 No. 1 p.30 ~ p.36
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Usefulness of a Modular Hip System for Combined Anteversion in Cementless Total Hip Arthroplasty
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Oh Kwang-Jun
Lee Jun-Gyu
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Abstract
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Purpose: The purpose of this study is to evaluate the usefulness of a modular total hip system for combined anteversion in cementless modular total hip arthroplasty.
Materials and Methods: We performed twenty cementless modular total hip arthroplasty procedures. The patients lay in lateral position and 15°internal rotation of the thigh. The surgeon inserted an acetabular cup component first, followed by a femoral component. He selected an appropriate modular neck component using an intra-operative manual combined anteversion test. All patients underwent post-operative computed tomography.
Results: The average measurement of anteversion of the acetabular cup was 15.9±2.9° and anteversion of the femoral stem was 15.2±11.9°. Then, the combined anteversion was calculated to 24.0±8.2°. Significant difference was observed between combined anteversion and theoretical combined anteversion.
Conclusion: The method using an intra-operative manual combined anteversion test cannot realize the theoretical combined anteversion in cementless modular hip arthroplasty.
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KEYWORD
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Cementless modular total hip arthroplasty, Manual combined anteversion test
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