Ontology type: schema:ScholarlyArticle Open Access: True
2013-03-05
AUTHORSTokio Matsuzaki, Tomoyuki Matsumoto, Hirotsugu Muratsu, Seiji Kubo, Takehiko Matsushita, Yohei Kawakami, Kazunari Ishida, Shinya Oka, Ryosuke Kuroda, Masahiro Kurosaka
ABSTRACTPurposeThe purpose of this study was to investigate kinematic factors affecting postoperative knee flexion after cruciate-retaining (CR) total knee arthroplasty (TKA) by analysing pre- and postoperative knee kinematics.MethodsWe retrospectively analysed 58 patients with osteoarthritis who received the same implant series. Pre- and postoperative kinematics were measured intraoperatively using a navigation system. As a clinical outcome, we measured the knee flexion angle before and one year after surgery. Correlations among pre- and postoperative kinematics and postoperative flexion were analysed using simple linear regression analyses.ResultsPreoperative knee kinematics, including tibial internal rotation and anterior translation (R = 0.87, P < 0.001; R = 0.53, P < 0.001, respectively), were significantly correlated with postoperative kinematics. Preoperative varus–valgus movements improved significantly postoperatively; however, tibial internal rotation remained unchanged. Furthermore, postoperative knee flexion angle was significantly correlated with postoperative tibial internal rotation (R = 0.45, P < 0.001).ConclusionsPreoperative knee kinematics were unchanged even after CR-TKA. Postoperative tibial internal rotation is one of the most important factors affecting postoperative knee flexion. More... »
PAGES803-808
http://scigraph.springernature.com/pub.10.1007/s00264-013-1803-y
DOIhttp://dx.doi.org/10.1007/s00264-013-1803-y
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/23460410
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