Abstract
For patients with severe joint deformity or defect, the conventional knee implant cannot meet the installation requirements. A patient-specific prosthesis is a rational choice for these patients. The purpose of this study was to develop a patient-specific knee implant and evaluate its mechanical properties. A mobile-bearing type of knee implant was designed for a young patient with severe rheumatoid arthritis. The stress characteristics were studied by the finite element (FE) method. Results show that the stress distribution of the mobile-bearing knee implant is much better than that of a hinged knee implant designed before. But the stability of the mobile-bearing knee implant should be investigated in more detail before its application.
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