Comput Methods Programs Biomed - Combined multi-body and finite element investigation of the effect of the seat height on acetabular implant stability during the activity of getting up.

Tópicos

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Resumo

An important question in assessing the stability of a total hip arthroplasty is the effect of daily physical activities of patients. The aim of this study is to examine these effects when standing up from three different seat heights. A musculoskeletal body model has been modified to simulate the three different seat heights. The calculated muscle forces have been transferred to a finite element model of a pelvis. The pelvis model was created from a hemipelvis CT dataset. As an implant component, a metal socket with a polyethylene insert was used. A primary implantation situation was modelled. For the analysed patient activities the highest hip contact forces and the highest micromotions occur at the beginning of the motion. The results of this study show that standing up from a certain seat height can have a significant influence on the micromotions in the implant-bone interface.

Resumo Limpo

import question assess stabil total hip arthroplasti effect daili physic activ patient aim studi examin effect stand three differ seat height musculoskelet bodi model modifi simul three differ seat height calcul muscl forc transfer finit element model pelvi pelvi model creat hemipelvi ct dataset implant compon metal socket polyethylen insert use primari implant situat model analys patient activ highest hip contact forc highest micromot occur begin motion result studi show stand certain seat height can signific influenc micromot implantbon interfac

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