Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/53785
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Type: Journal article
Title: Fractures of modern high nitrogen stainless steel cemented stems
Author: Yates, P.
Quaraishi, N.
Kop, A.
Howie, D.
Marx, C.
Swarts, E.
Citation: Journal of Arthroplasty, 2008; 23(2):188-196
Publisher: Churchill Livingstone Inc Medical Publishers
Issue Date: 2008
ISSN: 0883-5403
1532-8406
Statement of
Responsibility: 
Piers J. Yates, Nasir A. Quraishi, Allan Kop, Donald W. Howie, Clare Marx and Eric Swarts
Abstract: We present 14 cases of fracture of modern, high-nitrogen, stainless steel stems. Our clinical and radiological data suggest that heavy patients with small stems and poor proximal support are at risk for fracturing their implants. “Champagne-glass” canals can lead to the use of smaller stems often placed in varus, which can lead to cantilever bending and fatigue failure in the distal half of the stem. Metallurgical assessment of the retrieved high-nitrogen, stainless steel stems reveals microstructural inconsistencies that may contribute to their failure. Based on our findings, careful consideration and attention to technique is required when using stainless steel stems in patients with high body mass index or high weight. Technique is particularly important in femurs with champagne-glass canals.
Keywords: stainless steel; hip arthroplasty; fracture; high nitrogen; cement
Description: Copyright © 2008 Elsevier Inc. All rights reserved.
RMID: 0020080297
DOI: 10.1016/j.arth.2006.12.051
Appears in Collections:Orthopaedics and Trauma publications

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