Abductor weakness and stresses around acetabular components of total hip arthroplasty: a finite element analysis.
Abductor weakness, and the resulting Trendelenburg gait, after total hip arthroplasty is believed to be associated with a poor long-term outcome. We have constructed a two-dimensional finite element analysis using load cases to mimic this abductor weakness. The finite element analysis demonstrates slightly increased stresses, particularly at the bone-cement interface in the DeLee-Charnley zone I, which does not seem sufficient to explain the adverse effect of abductor weakness.
Sutherland
A G
AG
Department of Orthopaedics, University of Aberdeen Medical School, Foresterhill, Scotland.
D'Arcy
S
S
Smart
D
D
Ashcroft
G P
GP
D000077:Acetabulum / Q000503:physiopathology*; D019644:Arthroplasty, Replacement, Hip; D001696:Biomechanical Phenomena; D020342:Finite Element Analysis; D006801:Humans; D018482:Muscle, Skeletal / Q000503:physiopathology*