Numerical optimisation of biomedical implant characteristics for increased service life.

Abstract

This study focused on the development of a numerical optimisation technique with the aim to decrease implant stress shielding which in turn could increase Total Hip Arthroplasty (THA) service life and reduce patient discomfort by employing a distributed stiffness along implant length. Research found that through distributing stiffness along THA stem length, significant reductions in stress shielding can be achieved without exceeding maximum allowable stresses with the cement, possibly extending life in comparison to homogeneous THA stems.