Proposing a new design for segmental bone defect (SBD) tibial implant unit cell

Abstract

One of the critical problems in designing and making an implant is to reduce the weight of the implant without compromising its mechanical properties and make it more porous that replicate the biomechanical properties of the bone. A new design is proposed for segmental bone defect (SBD) tibial implant unit cells rather than the existing design of Aaron Vance and Klaudio Bari (2018). Finite Element Analysis (FEA) was completed for the choice of the unit cell and to predict the implant performance. The optimization is carried out to reduce the mass of the existing unit cell design. The outcome of this research shows that the developed implant unit cell exhibits a mass of 1.06g, the maximum stress of 42.885 MPa, and a relative density of 0.2413. This is slightly lower than the existing unit cells to allow for the replacement of the existing implant unit cell with a porosity of 75.2% which is considered significant for the determination of the unit cell for global structure.