The morphology of the femur in elderly Japanese females: Analysis using 3D-CT

Journal of Orthopaedic Surgery
Takashi MaeharaToshifumi Ozaki

Abstract

While various implants are currently used for the treatment of femoral trochanteric fractures in Japan, 'mismatches' have been known to occur between patient and implant type. The purpose of this study is to identify morphological characteristics of elderly Japanese females, both in terms of the shape of proximal femur and its anterior curvature in order to evaluate the suitability of implants for treatment of femoral trochanteric fractures using 3D-computed tomography (CT) scanning. This study used CT scan data taken from 50 elderly females (aged 70 years or older). Neck-shaft (NS) angle and height of the greater trochanter (GT) were measured under defined conditions (TPI: theoretical plane to place implant). Anterior curvature of the femoral shaft was also measured. On average, the NS angle was found to be 128.1° and GT height was 62.4 mm. Average curvature radius was 1040 mm. As for the NS angle, the centrum-collum-diaphysis angles of existing implants (125° or 130°) are reasonable. In elderly Japanese patients, the proximal femur shows specific characteristics. As GT height is very short, the implant may easily interfere with the lateral cortex. Additionally, the curvature radius calculated (1040 mm) was smaller than that o...Continue Reading

References

Aug 4, 2004·Journal of Orthopaedic Trauma·Kenneth A EgolKenneth J Koval
Nov 8, 2006·Journal of Orthopaedic Trauma·Rudolf W PoolmanMohit Bhandari
Jun 27, 2013·Journal of Orthopaedic Trauma·Joseph MarattJames A Goulet

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Citations

Jan 28, 2021·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·I J JungJ W Kim

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Methods Mentioned

BETA
X-ray

Software Mentioned

InterTAN
station
Zio

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