Assessing coronal laxity in extension and flexion at a minimum of 10 years after primary total knee arthroplasty View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2016-08

AUTHORS

Yasushi Yoshihara, Yuji Arai, Shuji Nakagawa, Hiroaki Inoue, Keiichiro Ueshima, Hiroyoshi Fujiwara, Ryo Oda, Daigo Taniguchi, Toshikazu Kubo

ABSTRACT

PURPOSE: Favourable long-term results after total knee arthroplasty (TKA) require appropriate soft tissue balance. However, the relationships between long-term results after TKA surgery and mediolateral laxities at extension and at 90° flexion remain unknown. This study therefore quantitatively assessed ligament balance at extension and at 90° knee flexion at least 10 years after primary TKA, as well as clarifying the relationships between long-term outcomes and mediolateral laxities. METHODS: This study included 49 knees (19 CR type and 30 PS type) of 33 patients followed up for at least 10 years after TKA at our hospital. Plain radiographs were obtained with about 150 N of varus or valgus stress using a Telos arthrometer at extension. At 90° flexion, epicondylar views were obtained under a 1.5-kg load and with about 10 kg of varus or valgus stress. RESULTS: Lateral laxity of about 5° was observed in both extension and flexion, with total laxities of varus and valgus stress each less than 10°. Postoperative clinical outcomes were good, with significant improvements in extension angle, femorotibial angle, and KSS, and no loosening in any knee. CONCLUSIONS: Good long-term results of TKA can be obtained with a lateral laxity of about 5°, equivalent to that of healthy knees. LEVEL OF EVIDENCE: III. More... »

PAGES

2512-2516

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00167-015-3601-0

DOI

http://dx.doi.org/10.1007/s00167-015-3601-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003261777

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/25894750


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    "description": "PURPOSE: Favourable long-term results after total knee arthroplasty (TKA) require appropriate soft tissue balance. However, the relationships between long-term results after TKA surgery and mediolateral laxities at extension and at 90\u00b0 flexion remain unknown. This study therefore quantitatively assessed ligament balance at extension and at 90\u00b0 knee flexion at least 10\u00a0years after primary TKA, as well as clarifying the relationships between long-term outcomes and mediolateral laxities.\nMETHODS: This study included 49 knees (19 CR type and 30 PS type) of 33 patients followed up for at least 10\u00a0years after TKA at our hospital. Plain radiographs were obtained with about 150\u00a0N of varus or valgus stress using a Telos arthrometer at extension. At 90\u00b0 flexion, epicondylar views were obtained under a 1.5-kg load and with about 10\u00a0kg of varus or valgus stress.\nRESULTS: Lateral laxity of about 5\u00b0 was observed in both extension and flexion, with total laxities of varus and valgus stress each less than 10\u00b0. Postoperative clinical outcomes were good, with significant improvements in extension angle, femorotibial angle, and KSS, and no loosening in any knee.\nCONCLUSIONS: Good long-term results of TKA can be obtained with a lateral laxity of about 5\u00b0, equivalent to that of healthy knees.\nLEVEL OF EVIDENCE: III.", 
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curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/s00167-015-3601-0'

Turtle is a human-readable linked data format.

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RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s00167-015-3601-0'


 

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