The principal purpose of this study was to contribute to Indian data on femoral geometry. However emphasis has been given on the amount of variability of a parameter, particularly femoral anteversion angle and neck shaft angle, and its clinical application in orthopaedic procedures. For this study a total of 100 (50 right and 50 left) samples of femora were selected from the medical college at Rajasthan. All femora were dried, adult, and intact. Eights parameters were studied: femoral anteversion angle (FNA), neck-shaft angle (NSA), femoral offset (FO), neck width (NW), Anterior/posterior neck length (ANL & PNL), Oblique/Trochanteric-oblique length (OL & TOL). IMAGEJ software analysis of digital photograph of femora was used to evaluate FNA, NSA & FO. Other materials used were vernier caliper and osteometric board. Statistical analysis was done using SPSS. Coefficient of Variation (CV) in percentage (%) was derived and compared with other studies. In the results FNA showed maximum CV (above 40) and NSA showed minimum CV (below 5). Retroversion was noted in 6% of samples. Our results compared well with other Indian as well as foreign studies. It was noted that FNA consistently showed high variability in the results of other authors. Thus our study shows that FNA is a challenge to surgeons (1) for its high CV (2) prevalence of retroversion and (3) wide range. Therefore anatomical variability in individuals should be kept in mind before planning any hip joint surgical procedure for better long-term outcome.
Femur, neck shaft angle, anteversion angle, retroversion, anthropology