The Critical Dimension Definition of Femoral for Custom-made Total Knee Arthroplasty by the Application of Geometric Modeling

The main purpose for the design of knee prosthesis is to construct patient's individual anatomical, geometric model and satisfy his/her real geometric and physiology characteristic. The reconstruction of 3D knee geometric model is the basis of knee prosthesis related design. In this study, Mimics software was used to obtain CT image to construct the complete knee actual 3D geometric model, to analyze and define the critical dimension needed for the most complicated femur resection in custom-made total knee arthroplasty (TKA), including critical dimensions of anterior femur resection, distal femur resection and posterior condylar resection. Based on the obtained information, one can setup the critical dimensions and perform the location analysis that are suitable for knee arthroplasty for individual patient's knee characteristic, shape and damage conditions. Then, based on these data to design and manufacture custom-made knee prosthesis to fulfill press-fit design purpose. [Hung-Shyong Chen, Tsai Yau Bin M.D., Chyouhwu Huang, Jeng-Nan Lee, Huang-Kuang Kung. The Critical Dimension Definition of Femoral for Custom-made Total Knee Arthroplasty by the Application of Geometric Modeling. Life Sci J 2012; 9(2):196-201] (ISSN:1097-8135). http://www.lifesciencesite.com.33