Serial Design Method for Plates Based on Feature Points Mapping Relation

To design serial plates meeting the requirements of various fractures and also reduce the adjustment during surgery, this paper proposes a method to quickly design serial plates based on feature points mapping relation. First, based on average point cloud model of bone, a surface model is constructed. After parametric representation for the surface model, a feature model is obtained. Second, the abutted surface of the plate is reconstructed centered with characteristic curves obtained from region-of-interest on the feature model of bone. Then, the feature model of the abutted surface is established through parametric design. Finally, the mapping relation between the feature points of region-of-interest and of the abutted surface is set up. Consequently, serial plates are generated rapidly through post-processing. Taking the plate for volar distal radius and the T-plate for proximal tibia as examples, the feasibility and validity of the proposed method is verified.