論文

査読有り
2017年6月

Superior-inferior position of patellar component affects patellofemoral kinematics and contact forces in computer simulation

CLINICAL BIOMECHANICS
  • Shinichiro Nakamura
  • ,
  • Yoshihisa Tanaka
  • ,
  • Shinichi Kuriyama
  • ,
  • Kohei Nishitani
  • ,
  • Hiromu Ito
  • ,
  • Moritoshi Furu
  • ,
  • Shuichi Matsuda

45
開始ページ
19
終了ページ
24
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.clinbiomech.2017.04.005
出版者・発行元
ELSEVIER SCI LTD

Background Anterior knee pain has been reported as a major postoperative complication after total knee arthroplasty, which may lead to patient dissatisfaction. Rotational alignment and the medial-lateral position correlate with patellar maltracking, which can cause knee pain postoperatively. However, the superior-inferior position of the patellar component has not been investigated. The purpose of the current study was to investigate the effects of the patellar superior-inferior position on patellofemoral kinematics and kinetics.
Methods: Superior, central, and inferior models with a dome patellar component were constructed. In the superior and inferior models, the position of the patellar component translated superiorly and inferiorly, respectively, by 3 mm, relative to the center model. Kinematics of the patellar component, quadriceps force, and patellofemoral contact force were calculated using a computer simulation during a squatting activity in a weight bearing deep knee bend.
Findings: In the inferior model, the flexion angle, relative to the tibial component, was the greatest among all models. The inferior model showed an 18.0%, 36.5%, and 22.7% increase in the maximum quadriceps force, the maximum medial patellofemoral force, and the maximum lateral patellofemoral force, respectively, compared with the superior model.
Interpretation: Superior-inferior positions affected patellofemoral kinematic and kinetics. Surgeons should avoid the inferior position of the patellar component, because the inferior positioned model showed greater quadriceps and patellofemoral force, resulting in a potential risk for anterior knee pain and component loosening.

Web of Science ® 被引用回数 : 5

リンク情報
DOI
https://doi.org/10.1016/j.clinbiomech.2017.04.005
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/28437676
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000402494500004&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.clinbiomech.2017.04.005
  • ISSN : 0268-0033
  • eISSN : 1879-1271
  • PubMed ID : 28437676
  • Web of Science ID : WOS:000402494500004

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