A Study Of Femoral Neck Anteversion In South Indian Population And Its Clinical Significance

Background: The femoral neck anteversion (FNA) also known as femoral torsion can be defined as the angleformed by the femoral condylar plane and a plane passing through the centre of the femoral neck and head. Thechange in the angle of femoral anteversion is associated with various clinical conditions. The data establishedin this study will be useful for various orthopedic procedures like arthroplasties, evaluation of pathologicconditions of the hip.Aim: To measure the angle of anteversion of femoral neck and determine the variation of this angle on both thesides.Materials and Methods: 90 dry femora 45 right and 45 left devoid of any gross pathology were obtained from thedepartment of anatomy, M S Ramaiah Medical College. The angle of femoral neck torsion was measured usinggoniometer in 90 dry bones were measured by Kingsley Olmsted method. The results obtained were tabulatedand statistically analyzed.Results: The mean femoral neck anteversion angle for right femur was 12.09° ± 4.56°, and for left femur it was12.53° ± 3.28°. Statistical analysis revealed the difference of means of FNA angle between the right and leftfemora was statistically non significant (p=0.65). Femoral anterversion was observed in 72.22% of bones while27.77% bones showed retroversion.Conclusion: The morphology of proximal end of femur is of special interest because of susceptibility of this areato numerous disorders in adults and in paediatric age group and the treatment needs a detailed anatomicalknowledge of angle of femoral neck torsion.