A Validation Study for Estimation of Femoral Anteversion Using the Posterior Lesser Trochanter Line : An Analysis of Computed Tomography Measurement |
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Authors: | Ho Hyun Yun Jung Ro YoonJae-Hyuk Yang MD Seung Yeop SongSung Bum Park MD Jee Wun Lee MD |
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Affiliation: | Department of Orthopaedic Surgery, Seoul Veterans Hospital, Seoul, South Korea |
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Abstract: | The aim of this study was to introduce a simple and reliable intraoperative reference guide to reproduce the normal femoral anteversion during total hip arthroplasty (THA). We hypothesized that the posterior lesser trochanter line (PLTL) could be a useful guide for estimating femoral anteversion during THA. We conducted a study of 56 men (112 hips) to evaluate the relationship between the PLTL and the femoral anteversion using computed tomography scans. The mean femoral anteversion was 9.0° ± 8.1° (range, − 16.2° to 32.9°). The PLTL angle correlated (r2 = 0.12, P < 0.05) with the femoral anteversion. We found a constant relationship between the PLTL and femoral anteversion, and the PLTL may be used as a guide for estimating the femoral stem anteversion during femoral stem fixation. |
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Keywords: | hip total hip arthroplasty posterior lesser trochanter line femoral neck axis femoral anteversion |
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