Removal of the subchondral plate in acetabular preparation


Retention of the subchondral plate during acetabular preparation in total hip replacement is believed to be an important part of modern cementing techniques. We have constructed a two-dimensional finite element analysis to assess the effect of retention and removal of this relatively stiff structure. The finite element analysis demonstrates increased stiffness and stress concentrations at the bone-cement interface that may have an adverse effect. Although further study is required, it may be that subchondral bone retention is not advantageous. On crois que la conservation de l’os subchondral au cours de la préparation acetabulaire pour le rémplacement-total de l’hanche est importante en les techniques modernes de ciment. Nous avon construit une analyse ”finite element” a deux dimensions pour évaluer l’effet de la conservation ou de l’enlèvement de cette structure raide. L’analyse ”finite element” démontrer l’intensification de concentration de la raideur et de la pression à l’interface de l’os-ciment qui peut produire un effet hostile. Bien que les études supplementaires sont necessaires, c’est possible que la conservation de l’os subchondral n’est pas adavantageux.

DOI: 10.1007/s002640050005

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@article{Sutherland2000RemovalOT, title={Removal of the subchondral plate in acetabular preparation}, author={Alasdair Sutherland and Sin{\'e}ad D’Arcy and Donating Smart and George Patrick Ashcroft}, journal={International Orthopaedics}, year={2000}, volume={24}, pages={19-22} }