FEMORAL NECK ANTEVERSION: IS THE SIDE WISE DIFFERENCE SIGNIFICANT?

Background: Femoral anteversion is one of the most important parameter of femur anatomy and geometry having important clinical implications. The objective of this study was to determine the side wise variation in femoral neck anteversion angle in adult dry femora of a local Pakistani population. Material Methods: We studied 211 dry adult femora, free of disease, by Kingsley Olmsted method to determine femoral anteversion angle. The angle of femoral neck anteversion was determined by measuring the angle between the long axis of the neck of femur in horizontal plane and the transverse retrocondylar line taken as the plane of the axis of shaft of femur in coronal plane. Results: Out of 211 femora, right and left side distribution was 103 (48.8%) and 108 (51.2%) respectively. The mean femoral neck anteversion angle in degrees for right femur was 8.4° ± 8.9° (-19 to 27) with a range 46.0 and for left femur it was 7.8° ± 10.5° (-27 to 35) with a range of 62. The difference between the two femora was non significant statistically (p=0.642). Conclusion: Right vs left side variation for the femoral neck anteversion angle was non significant in our population