INVESTIGATION OF PERFORMANCE OF A FEMORAL IMPLANT WITH A PLUG USING FINITE ELEMENT ANALYSIS

Document Type

Conference Proceeding

Publication Date

1-1-1999

Abstract

A Finite Element Analysis was performed on the critical section of a titanium alloy femoral implant coupled with a cobalt-chromium Dall-Miles Cable Grip System (DMCGS). The critical section of the implant is defined at the hole where the wires of the DMCGS are threaded. Two models were generated for the analysis. The first model consisted of the critical section with a cobalt-chromium plug filled in at the hole. The second model consisted of the critical section without the plug in the hole. The models used in the study were based on a design developed by Howmedica Incorporated (called the "head-neck replacement"). One static simulation was performed on each model. This simulation represented the early stance phase of normal walking. The wires used in the simulations were pre-tensioned. The preliminary results of the analysis showed that the stresses in the model with the added plug were lower than those in the model without the plug. This indicated that a plug added to a femoral implant adjoined with the Dall-Miles Cable Grip System reduces the stress concentrations at the hole. Furthermore, the results of the study will provide insight into the modifications on design of femoral implants. This may well lead to an improvement in implant performance and better aid in the restoration of hip function for arthritic patients.

Identifier

85122687649 (Scopus)

ISBN

[9780791816400]

Publication Title

ASME International Mechanical Engineering Congress and Exposition Proceedings Imece

External Full Text Location

https://doi.org/10.1115/IMECE1999-0417

First Page

141

Last Page

142

Volume

1999-D

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