Proximal femoral geometry in cadaveric femora and its clinical relevance

Dr Imran Syed, Dr Joshi DS, Dr Diwan CV

Introduction: Morphology and statistical analysis of femoral anthropometry among different populations reveals a great amount of variation. The morphology of proximal femur is an essential parameter in the design and development of implant. The aim of present study is to remove the lacunae of information about proximal femoral geometry in Indians and evaluate its impact on implant design. Material and Method: 200 adult dry human cadaveric femora of known sex were collected. The Neck Shaft angle, Neck width and Neck length were determined. Result: The mean neck-shaft angle in cadaveric femora in the present study irrespective of gender and side was 132.60. The mean neck shaft angle in male femora was 132.21 and in female femora was 133.3. The mean neck length was 37.61 mm in male femora and 34.75 mm in female femora. The mean neck width was 31.54 mm in male femora and 27.20 mm in female femora. The mean neck shaft angle was 133.9 in right femora and 131 in left femora. The mean neck length was 35.80 mm in right femora and 37.53 mm in left femora. The mean neck width was 30.13 mm in right femora and 29.85 in left femora. The mean Neck length in both male and female femora on both right and left sides showed significant positive correlation with the Neck width. Conclusion: This study will help the orthopedic surgeons and biomechanical engineers to design implants and restore normal anatomy of femur in Indian population.

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