A fracture may malunite in the healing process resulting in bone deformity and loss of function. The project aim is to improve accuracy of corrective surgery by providing “patient-specific implant” (PSI) technology . The project delivers 1) 3D planning and implant design software, 2) implants that force accurate positioning and fixation of bone segments, 3) implants optimized for shape and load, and 4) optimized production procedures. The implants will render treatment minimally invasive. Phase 1 will allow is to first do a feasibility study and write a business plan to see if it is worthwhile to continue with the development steps in the further project.