Linked Life Data

11742468

Source:http://linkedlifedata.com/resource/pubmed/id/11742468

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8 Suppl 1
pubmed:dateCreated
2001-12-19
pubmed:abstractText
The kinematics of posterior cruciate ligament (PCL)-retaining (PCR) and PCL-substituting (PS) total knee arthroplasty (TKA) were compared directly in a robotic, in vitro study, and the forces in the PCL and cam-spine mechanism were measured from 0 degrees to 120 degrees of flexion. The forces in the PCL after PCR TKA and in cam-spine contact after PS TKA increased only at a flexion of > or =90 degrees. Posterior translation of the lateral femoral condyle was significantly greater than translation of the medial femoral condyle in the intact knees, consistent with femoral rollback and internal tibial rotation. The PCR and PS TKAs partially restored these kinematics when the knee flexed >60 degrees (ie, when the forces increased in the PCL and cam-spine mechanism), whereas the PCL-deficient TKA failed to do so. The results reflect the importance of the PCL and cam-spine mechanism after PCL retention and substitution in TKA and confirm the necessity for either one, if knee kinematics are to be restored even partially.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0883-5403
pubmed:author
pubmed:issnType
Print
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
150-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Cruciate-retaining and cruciate-substituting total knee arthroplasty: an in vitro comparison of the kinematics under muscle loads.
pubmed:affiliation
Orthopaedic Biomechanics Laboratory, Harvard Medical School, MGH/BIDMC, Boston, Massachusetts 02215, USA. gli@caregroup.harvard.edu
pubmed:publicationType
Journal Article, Comparative Study, In Vitro, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't