Conclusionsīoth, short and standard THA, cause unloading of the proximal femur. Moreover, the highest peak stresses were observed metaphyseal for the SHA stem while for the standard THA high stress pattern was observed more distally. The SHA showed less reduction proximally with a significant higher metaphyseal cortical stress compared to standard THA. ResultsĬompared to the native femur, a considerable reduction of cortical stress was recorded after implantation of SHA and standard THA. Von Mises stress was used to investigate the change of cortical stress distribution. The loading configuration was performed with an axial force of 1400 N. Braun Aesculap) and standard THA (CLS, Zimmer-Biomet), were generated from computed tomography datasets. The subject specific finite element models of biomechanical femora, one native and two with implanted metaphyseal anchoring SHA (Metha, B. As comparative biomechanical reference data are rare we used a finite element analysis (FEA) approach to compare cortical load transfer after implantations of a metaphyseal anchoring short and standard stem in native biomechanical femora. Short stem total hip arthroplasty (SHA) preserves femoral bone stock and is supposed to provide a more natural load transfer compared to standard stem total hip arthroplasty (THA).
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