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Shear properties of bilaminar polymethylmethacrylate cement mantles in revision hip joint arthroplasty.

Authors :
Weinrauch PC
Bell C
Wilson L
Goss B
Lutton C
Crawford RW
Source :
The Journal of arthroplasty [J Arthroplasty] 2007 Apr; Vol. 22 (3), pp. 394-403. Date of Electronic Publication: 2007 Jan 22.
Publication Year :
2007

Abstract

Although cement-within-cement revision arthroplasty minimizes the complications associated with removal of secure PMMA, failure at the interfacial region between new and old cement mantles remains a theoretical concern. This article assesses the variability in shear properties of bilaminar cement mantles related to duration of postcure and the use of antibiotic cements. Bilaminar cement mantles were 15% to 20% weaker than uniform mantles (P < .001) and demonstrated variability in shear strength related to duration of postcure of the freshly applied cement (P < .001). The use of Antibiotic Simplex did not significantly influence interfacial cement adhesion (P = .52). Interfacial adhesion by mechanisms other than mechanical interlock plays a significant role in the bond formed between new and old PMMA cements, with an important contribution by diffusion-based molecular interdigitation. In the presence of a secure cement-bone interface, we recommend cement-within-cement revision techniques in suitable patients.

Details

Language :
English
ISSN :
0883-5403
Volume :
22
Issue :
3
Database :
MEDLINE
Journal :
The Journal of arthroplasty
Publication Type :
Academic Journal
Accession number :
17400096
Full Text :
https://doi.org/10.1016/j.arth.2006.04.010