Deformation analysis of CoCrMo-on-CoCrMo hip implant based on body mass index using 2D finite element procedure

Abstract

The paper available of total hip arthroplasty is still concerned with the external factors of implant user, but the internal factor that is the user's body weight has not deeply understood. Our research presents deformation analysis of total hip arthroplasty with different loading conditions based on the patient's body mass index category. 2D model is selected to conducting numerical analysis of CoCrMo-on-CoCrMo that giving vertical load from different category of body mass index, namely underweight, normal, overweight, and obese class I, obese class II, and obese class III using finite element procedures. Peak loading under normal walking conditions from actual condition of human hip joint is adopted. Our result explains that displacement in direction-y is larger in line with greater user's body mass index.