XUE Wendong 1 , MA Ruyu 1 , WANG Dongfeng. 2
  • Department of Orthopeadics,the 9thAffiliated People’s Hospital, Shanghai Jiaotong University Medical School, Shanghai,200011,P.R.China;
Prosthetic hip; Image processing; Computer-aided design
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Objective To improve the fitness and initial fixation strength between the hip and bone and to optimize the shape of the prosthetic implants. Methods The cross-section of hip canal was automatically extracted by Image processing. By using taper curve fit,hypocurve predigesting and the curve of shape center fit, the parameters of long-short diameter and the curve of shape center were got to design the hip shape.CAD was adopted to analyze and evaluate the configuration of bone and shape of hip.The “peg-in-hole” was employed to optimize the shape of implant by the visual test of “Drawingout” in computer. Results 23.2% hip-bone average matching rate and 0.033% bone damage rate were presented by CAD analysis. The implant extraction path were validated visually and quantitatively by measuring the maximum amount of overlap in the path configuration. Conclusion The valuable method for prothsetic hip design was presented by the way of image processing,graphics design and optimizingdesign in this study.

Citation： XUE Wendong,MA Ruyu,WANG Dongfeng.. ANATOMY FIT AND OPTIMIZED DESIGN OF THE INTERFACE BETWEEN PRESS-FIT HIP AND BONE. Chinese Journal of Reparative and Reconstructive Surgery, 2005, 19(12): 949-951. doi: Copy