Document Detail

Mechanical stability of total hip replacement using pressurization of bone cement during curing: push-out tests in cadaver femora.
MedLine Citation:
PMID:  18198774     Owner:  NLM     Status:  MEDLINE    
An experimental model was used to assess the mechanical stability of a cemented hip prosthesis, comparing the result from applied pressurization versus its absence during the curing process. Twelve pairs of cadaveric femora underwent simulated total hip replacement. The right femurs were pressurized for 10 minutes in the upper surface of the construct. The applied pressure was 325.4 KPa. All the femurs were osteotomized 30 days postoperatively and push-out tests were performed. The mean failure load at the cement-bone interface was found to be 58% higher with the pressurization technique (7.619 KN versus 4.817 KN) (P <.001). The amount of pressure we used proved advantageous, however the required physical effort proved exhausting. The design of a new surgical instrument could possibly resolve the problem.
Constantinos D Apostolou; Christos K Yiannakopoulos; Theologos T Ioannidis; Panayiotis J Papagelopoulos; Dimitrios Korres
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Orthopedics     Volume:  30     ISSN:  0147-7447     ISO Abbreviation:  Orthopedics     Publication Date:  2007 Dec 
Date Detail:
Created Date:  2008-01-17     Completed Date:  2008-02-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7806107     Medline TA:  Orthopedics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1028-32     Citation Subset:  IM    
Department of Orthopedics, University of Athens, Greece.
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MeSH Terms
Arthroplasty, Replacement, Hip / methods*
Bone Cements*
Equipment Design
Femur / physiopathology*,  surgery
Hip Prosthesis*
Materials Testing / instrumentation*
Reg. No./Substance:
0/Bone Cements

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