LAUSR

This work aims to design a prosthesis of the pelvic bone considering the effect of muscle forces using principles of structural topology optimization. The running gait cycle is chosen since it has high active muscle forces and is divided into seven phases. The pelvic prosthesis is designed for individual seven phases with non-design domains. Material of prosthesis is the titanium alloy (Ti $$_6$$ Al $$_4$$ V) since it has good biocompatibility and high strength. The shape similarity between the designed prosthesis and the pelvic bone is also compared which has not been done before. The design space is explored by using combination of phases with an aim to find the possible best loading sequence that produces the optimal design with the highest shape similarity. Results show that the induced peak stresses in the optimal designs are low, within endurance strength of the alloy. The maximum stress, maximum displacement and compliance values are lower in optimal designs compared with pelvic bone. The optimally designed pelvic prosthesis using combination of phases has high shape similarity. A good shape similarity of the prosthesis may result in less complications in terms of adjustment of the body to the prosthesis.