Proximal Femoral Geometry is subjected to wide range of ethnic variations. Various research article indicates that geometry of the proximal femur in the Indian population considerably differ from the European and American standard. The geometry of head, neck and the femoral stem is very essential in making of implants. Currently, arthroplasty components widely used in India are based on western standards, because of mismatched implant size there were several implications like joint congruence, micromotion, osteoarthritis, and tendinopathy. Materials and methods: Total 388 non - pathological hip joint X-rays collected from the Southern Indian population. The primary objective of the study is to measure proximal femoral geometry and compare the difference with various ethnic groups. Measurements like femoral head diameter, Neck width, Neck shaft angle, Femoral offset and Medullary canal diameter are calculated using Picture Archiving Communication System (PACS). Results: We have found the geometrically difference in proximal part of the femur in the south Indian population when compared with the geometries of femur worldwide. Furthermore, we have used sophisticated PACS system to measure the bony variations. The data femur will aid in fabrication of femur implants which will be precisely shaped and fit for the Indian population. Conclusion: The present study of the proximal femur in the south Indian population considerably differs from the dimensions of the Western ethnic population. The precise geometry of proximal femur helps clinicians to plan pre operative surgical procedure and also aid in development of proximal femoral hemiarthroplasty components which are suitable and fit for the Indian population
Key words: Proximal Femur, Femoral head diameter, Anthropometry of Femur, Neck shaft angle, femoral implant, hemiarthroplasty.
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