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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1985-7-24
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pubmed:abstractText |
We performed instrumented measurement of anterior-posterior laxity of the knee in thirty-three cadaver specimens, 338 normal subjects, and eighty-nine patients with unilateral disruption of the anterior cruciate ligament. The test instrument was the Medmetric knee arthrometer, model KT-2000. We measured total anterior-posterior laxity, produced by anterior and posterior loads of eighty-nine newtons (twenty pounds), and the anterior compliance index. The total anterior-posterior laxity is composed of an anterior displacement and a posterior displacement; these are measured from a testing reference position, defined as the resting position of the knee after applying and then releasing a posterior load of eighty-nine newtons. The anterior compliance index is defined as the anterior displacement between an anterior load of sixty-seven newtons and one of eighty-nine newtons. All tests were performed with the knee held on a thigh support that placed the knee in 20 +/- 5 degrees of flexion. The mean anterior displacement at eighty-nine newtons was 5.7 millimeters in a group of normal subjects and 13.0 millimeters in a group of patients with a disrupted anterior cruciate ligament. Ninety-two per cent of the normal subjects had a left knee-right knee difference in anterior displacement of no more than two millimeters, while 96 per cent of the patients with a unilateral disruption of the anterior cruciate ligament had an injured knee-normal knee difference in anterior displacement of more than two millimeters. Ninety-three per cent of the normal subjects had a difference in the left-right compliance index of no more than 0.5 millimeter, and 85 per cent of the patients with unilateral disruption of the anterior cruciate ligament had a difference in the compliance index of the injured and normal sides of more than 0.5 millimeter.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0021-9355
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
67
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
720-6
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pubmed:dateRevised |
2010-10-25
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pubmed:meshHeading |
pubmed-meshheading:3997924-Adolescent,
pubmed-meshheading:3997924-Adult,
pubmed-meshheading:3997924-Cadaver,
pubmed-meshheading:3997924-Child,
pubmed-meshheading:3997924-Female,
pubmed-meshheading:3997924-Humans,
pubmed-meshheading:3997924-Joint Instability,
pubmed-meshheading:3997924-Knee Injuries,
pubmed-meshheading:3997924-Knee Joint,
pubmed-meshheading:3997924-Ligaments, Articular,
pubmed-meshheading:3997924-Male,
pubmed-meshheading:3997924-Middle Aged,
pubmed-meshheading:3997924-Orthopedic Equipment,
pubmed-meshheading:3997924-Pressure
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pubmed:year |
1985
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pubmed:articleTitle |
Instrumented measurement of anterior laxity of the knee.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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