Radiological Assessment of Femoral Rotation: A Cadaveric Study

To define how the lesser trochanter can be used in an objective manner to assess the femoral rotation in plain radiograph. Eighteen pairs of cadaveric femurs from Chinese individuals were used in this study. For each femur, radiographs were taken in the following positions with reference to the anat...

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Bibliographic Details
Published in:Journal of orthopaedics, trauma and rehabilitation trauma and rehabilitation, 2012-06, Vol.16 (1), p.22-25
Main Authors: Lie, Wai-Hung Chester, Chiu, Kwong-Yuen, Ng, Tze-Pui
Format: Article
Language:English
Subjects:
cadaveric study
femoral rotation
radiological assessment
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Summary:To define how the lesser trochanter can be used in an objective manner to assess the femoral rotation in plain radiograph. Eighteen pairs of cadaveric femurs from Chinese individuals were used in this study. For each femur, radiographs were taken in the following positions with reference to the anatomical transepicondylar axis: neutral position; 5°, 10°, 15°, and 20° internal rotation; and 5°, 10°, 15°, and 20° external rotation. Lesser-trochanter index, which was defined as the width of lesser trochanter divided by the remaining width of the proximal femur, measured at the level of its most prominent point, which was perpendicular to the anatomical axis of the proximal femur, was obtained on a Picture Archiving Communication System workstation in every radiograph. Statistical analyses were performed by using a statistical software R (R language, version 2.12.0). The lesser-trochanter index showed positive correlation with increasing external rotation of femur: correlation coefficient=0.75 (p
ISSN:2210-4917
2210-4925
DOI:10.1016/j.jotr.2011.07.003