Loading...
Search for:
samadi-dooki--a
0.01 seconds
An analytical approach to study the intraoperative fractures of femoral shaft during total hip arthroplasty
, Article Journal of Biomechanical Engineering ; Volume 135, Issue 4 , 2013 ; 01480731 (ISSN) ; Farahmand, F ; Shodja, H. M ; Samadi Dooki, A ; Sharif University of Technology
2013
Abstract
An analytical approach which is popular in micromechanical studies has been extended to the solution for the interference fit problem of the femoral stem in cementless total hip arthroplasty (THA). The multiple inhomogeneity problem of THA in transverse plane, including an elliptical stem, a cortical wall, and a cancellous layer interface, was formulated using the equivalent inclusion method (EIM) to obtain the induced interference elastic fields. Results indicated a maximum interference fit of about 210 μm before bone fracture, predicted based on the Drucker-Prager criterion for a partially reamed section. The cancellous layer had a significant effect on reducing the hoop stresses in the...