Study of Right and Left Asymmetry in Neck Shaft Angle and Neck Length of Femur in Jharkhand Population

Abstract

Introduction: The proximal end of femur in human is the object of much attention. Geometry of proximal femur has been identified as risk factor for hip fractures. Anatomical study of femur bone serves helpful data to understand different aspect of clinical disease conditions, including common site of fracture, changes in osteoporosis, associated congenital anomalies as well as medicolegal cases . Extensive studies of normal neck angles have been carried out. The values differ considerably in the reports available. Materials and Method: In the present study one hundred dry femora from different colleges of Jharkhand (East India) were studied .The parameters that were measured in one hundred dry femora (51 femora from right side and 49 from left side) are: (a) Neck shaft angle and (b) Neck length of femur. Results : The result of the present study are the mean neck shaft angle of right femora was 131.44±4.72˚ and for left femora was 131.53±5.29˚ ,the mean neck length of right femora was 29.1±02.6 mm and for left femora was 29.3±03.1 mm . Conclusion: All the clinician must be familiar with normal neck- shaft angle for better comprehension of clinical and pathological states of hip joint .The neck- shaft angle ,neck length and other parameters are important to design prosthesis for hip replacement.In the present study the mean neck shaft angle of the left femora was feebly higher than in the right femora but statistically not significant (p>0.05). The mean femoral neck length of left femora was feebly higher than the right femora , but statistically nonsignificant (p>0.05).