Document Detail


Surface damage to cobalt-chrome femoral head prostheses.
MedLine Citation:
PMID:  8300686     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fifty-four cobalt-chrome alloy femoral heads were retrieved at revision surgery or at post-mortem; 23 came from uncemented, eight from hybrid and 23 from cemented hip arthroplasties. The uncemented and hybrid implants had porous coating, metal backing and modular femoral heads; with one exception none of the cemented implants had any of these. Twenty-five of the 31 heads from uncemented and hybrid arthroplasties, and 11 of the 23 heads from cemented arthroplasties showed surface damage involving more than 25% of the surface. Scanning electron microscopy revealed multidirectional fine scratches 1 micron to 10 microns in depth and width which appeared to have been made by fine, hard particles. There was a higher rate of such damage in the uncemented and hybrid arthroplasties than in the cemented implants, suggesting that the abrasive particles were mainly released from the metal, rather than from the cement or polyethylene components of the implants.
Authors:
M Jasty; C R Bragdon; K Lee; A Hanson; W H Harris
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of bone and joint surgery. British volume     Volume:  76     ISSN:  0301-620X     ISO Abbreviation:  J Bone Joint Surg Br     Publication Date:  1994 Jan 
Date Detail:
Created Date:  1994-03-07     Completed Date:  1994-03-07     Revised Date:  2010-11-10    
Medline Journal Info:
Nlm Unique ID:  0375355     Medline TA:  J Bone Joint Surg Br     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  73-7     Citation Subset:  AIM; IM    
Affiliation:
Orthopaedic Biomechanics Laboratory, Massachusetts General Hospital, Boston 02114.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Cementation
Chromium Alloys*
Female
Femur Head
Hip Prosthesis*
Humans
Male
Microscopy, Electron, Scanning
Middle Aged
Porosity
Prosthesis Failure
Reoperation
Stress, Mechanical
Surface Properties
Chemical
Reg. No./Substance:
0/Chromium Alloys
Comments/Corrections
Comment In:
J Bone Joint Surg Br. 1994 Sep;76(5):852   [PMID:  8083291 ]

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


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