Document Detail


Computer-assisted gap equalization in total knee arthroplasty.
MedLine Citation:
PMID:  17400087     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This in vitro biomechanical study compared a conventional balancing technique in knee arthroplasty to a technique using computer assistance. The experimental technique used a soft tissue tensioner instrumented with computer-monitored load cells to quantify soft tissue tension. To assess outcome, a tibial load transducer measured medial and lateral compartment forces and tibial rotation. An electromagnetic tracking system quantified knee position under simulated muscle loading. The computer-assisted technique improved knee balance before insertion of components. However, once components were implanted, there was no difference in knee load balance between the 2 techniques. No correlation was shown between compartmental load balance and tibial rotation or mechanical axis misalignment. Although computer-assisted surgery may improve technical accuracy, further work is necessary to achieve an optimal final knee load balance.
Authors:
Darius G Viskontas; Tomas V Skrinskas; James A Johnson; Graham J King; Mitchell J Winemaker; David G Chess
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of arthroplasty     Volume:  22     ISSN:  0883-5403     ISO Abbreviation:  J Arthroplasty     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-04-02     Completed Date:  2007-06-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8703515     Medline TA:  J Arthroplasty     Country:  United States    
Other Details:
Languages:  eng     Pagination:  334-42     Citation Subset:  IM    
Affiliation:
Hand and Upper Limb Clinic, St. Joseph's Health Centre, University of Western, Ontario, London, Canada.
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MeSH Terms
Descriptor/Qualifier:
Arthroplasty, Replacement, Knee / methods*
Biomechanics
Humans
Knee Joint / physiopathology
Rotation
Surgery, Computer-Assisted
Tibia / physiopathology
Treatment Outcome

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


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