Document Detail


Comparison between the kinematics of fixed and rotating bearing knee prostheses.
MedLine Citation:
PMID:  11064985     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Rotating platform mobile bearing knee implants allow for increased tibiofemoral articular conformity without restricting axial rotation. In the current study, the effect of rotating platform knee replacement with and without posterior cruciate ligament substitution on knee kinematics was investigated. Five knees were implanted sequentially implanted with standard (fixed) bearings and then with rotating platform prostheses, each in posterior cruciate retaining and substituting designs. Three-dimensional kinematics for all knees were measured in an Oxford Knee Rig, which simulates dynamic quadriceps-driven closed kinetic chain knee extension under load. Rotating bearings did not significantly change knee kinematics when compared with fixed bearings. In this in vitro model, the cruciate retaining designs stayed more anterior, and had greater net femoral roll back and tibiofemoral valgus angulation with flexion than cruciate substituting designs.
Authors:
D D D'Lima; M Trice; A G Urquhart; C W Colwell
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical orthopaedics and related research     Volume:  -     ISSN:  0009-921X     ISO Abbreviation:  Clin. Orthop. Relat. Res.     Publication Date:  2000 Nov 
Date Detail:
Created Date:  2000-11-22     Completed Date:  2000-11-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0075674     Medline TA:  Clin Orthop Relat Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  151-7     Citation Subset:  AIM; IM    
Affiliation:
Division of Orthopaedics, Scripps Clinic, La Jolla, CA 92037, USA.
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MeSH Terms
Descriptor/Qualifier:
Biomechanics
Humans
Knee Joint / physiology
Knee Prosthesis*
Prosthesis Design
Rotation

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


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