Document Detail


Effects of pre-cooling and pre-heating procedures on cement polymerization and thermal osteonecrosis in cemented hip replacements.
MedLine Citation:
PMID:  12835068     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Numerical studies were performed to investigate bone cement polymerization, temperature history and thermal osteonecrosis in cemented hip replacements with finite element methods. In this paper, the effects of pre-cooling and pre-heating of the prosthesis and/or the cement prior to implantation were simulated. It was found that the cement polymerization initiated near the bone-cement interface and progressed toward the prosthesis when both the cement and prosthesis were initially at room temperature. When the prosthesis and/or cement were pre-cooled, a reduction of the peak temperature at the bone-cement interface resulted, and this may reduce thermal osteonecrosis. However, this also slowed the polymerization process, and may result in a weaker bone cement. If the prosthesis was significantly initially heated, bone cement polymerization reversed reaction direction, started from the cement-prosthesis interface and proceeded toward the bone. Such polymerization direction may reduce or eliminate the formation of voids at the cement-prosthesis interface. Numerical results also showed that pre-heating seemed unlikely to produce significant thermal damage to the bone. The method of pre-heating the prosthesis prior to implantation may decrease the likelihood of cement-prosthesis loosening and increase the life of total hip arthroplasty.
Authors:
Chaodi Li; Steven Schmid; James Mason
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medical engineering & physics     Volume:  25     ISSN:  1350-4533     ISO Abbreviation:  Med Eng Phys     Publication Date:  2003 Sep 
Date Detail:
Created Date:  2003-07-01     Completed Date:  2004-04-06     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9422753     Medline TA:  Med Eng Phys     Country:  England    
Other Details:
Languages:  eng     Pagination:  559-64     Citation Subset:  IM    
Affiliation:
Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN 46556, USA.
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MeSH Terms
Descriptor/Qualifier:
Arthroplasty, Replacement, Hip / methods*
Bone Cements / chemistry*,  radiation effects
Cementation / methods*
Cold Temperature / adverse effects*
Computer Simulation
Equipment Failure Analysis
Femur / chemistry,  pathology,  radiation effects,  surgery
Femur Head Necrosis / etiology*,  pathology
Finite Element Analysis
Hip Prosthesis*
Hot Temperature / adverse effects*
Humans
Models, Biological*
Models, Chemical
Prosthesis Failure
Temperature
Chemical
Reg. No./Substance:
0/Bone Cements
Comments/Corrections
Comment In:
Med Eng Phys. 2005 Jun;27(5):439; author reply 441-2   [PMID:  15863352 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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