Correlation of Corrosion and Biomechanics in the Retrieval of a Single Modular Neck Total Hip Arthroplasty Design

Increased modularity of total hip arthroplasty components has occurred, with theoretical advantages and disadvantages. Recent literature indicates the potential for elevated revision rates of modular neck systems and the potential for local pseudotumor and metallosis formation at the modular neck/st...

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Bibliographic Details
Published in:The Journal of arthroplasty Vol. 30; no. 1; pp. 135 - 140
Main Authors: Lanting, Brent A., Teeter, Matthew G., Vasarhelyi, Edward M., Ivanov, Todor G., Howard, James L., Naudie, Douglas D.R.
Format: Journal Article
Language:English
Published: Elsevier Inc 01.01.2015
Subjects:
metallosis
modular neck
modular total hip
Orthopedics
pseudotumor
metallosis
modular neck
modular total hip
pseudotumor
ISSN:0883-5403, 1532-8406
Online Access:Get full text
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Summary:Increased modularity of total hip arthroplasty components has occurred, with theoretical advantages and disadvantages. Recent literature indicates the potential for elevated revision rates of modular neck systems and the potential for local pseudotumor and metallosis formation at the modular neck/stem site. Retrieval analysis of one modular neck implant design including SEM (SCANNING ELECTRON MICROSCOPY) assessment was done and correlated with FEA (finite element analysis) as well as clinical features of patient demographics, implant and laboratory analysis. Correlation of the consistent corrosion locations to FEA indicates that the material and design features of this system may result in a biomechanical reason for failure. The stem aspect of the modular neck/stem junction may be at particular risk.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2014.06.009