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Increase in medial meniscal extrusion in the weight-bearing position observed on ultrasonography correlates with lateral thrust in early-stage knee osteoarthritis.

Authors
  • Ishii, Yosuke1
  • Ishikawa, Masakazu2
  • Kurumadani, Hiroshi3
  • Hayashi, Seiju2
  • Nakamae, Atsuo2
  • Nakasa, Tomoyuki2
  • Sumida, Yoshikazu2
  • Tsuyuguchi, Yusuke2
  • Kanemitsu, Munekazu2
  • Deie, Masataka4
  • Adachi, Nobuo2
  • Sunagawa, Toru3
  • 1 Health Sciences Major, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan. Electronic address: [email protected] , (Japan)
  • 2 Department of Orthopedic Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan. , (Japan)
  • 3 Health Sciences Major, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan. , (Japan)
  • 4 Department of Orthopedic Surgery, Aichi Medical University, Aichi, Japan. , (Japan)
Type
Published Article
Journal
Journal of Orthopaedic Science
Publisher
Elsevier
Publication Date
Jul 01, 2020
Volume
25
Issue
4
Pages
640–646
Identifiers
DOI: 10.1016/j.jos.2019.07.003
PMID: 31350063
Source
Medline
Language
English
License
Unknown

Abstract

Lateral thrust is known to be risk factors for knee osteoarthritis progression. Medial meniscus extrusion is also known to be risk factors for knee osteoarthritis progression; moreover, the amount of change in medial meniscus extrusion from non-weight bearing to weight bearing is an important factor for the progression of knee osteoarthritis. This study aimed to investigate the correlation between lateral thrust and the change in medial meniscus extrusion. In total, 44 knees from 44 patients (mean age, 68.9 years) with knee osteoarthritis were divided into two groups according to the Kellgren-Lawrence grade: early-stage osteoarthritis (Kellgren-Lawrence = 2) and severe osteoarthritis (Kellgren-Lawrence = 3 or 4). The lateral thrust during gait, represented as the lateral acceleration peak immediately after heel strike, was recorded by an inertial sensor. The amount of change in medial meniscus extrusion, which was the difference between weight-bearing (unipedal standing) and non-weight-bearing (supine) conditions, was evaluated using ultrasonography. The mean value of the lateral acceleration peak in the severe osteoarthritis group was higher than that of the early-stage osteoarthritis group (p < 0.05). The non-weight-bearing and weight-bearing medial meniscus extrusion in the severe OA group were significantly higher than those of the early-stage osteoarthritis group (p < 0.001). However, the amount of change in medial meniscus extrusion in severe osteoarthritis group was significantly lower than in the early-stage osteoarthritis group (p < 0.05). The amount of change in medial meniscus extrusion showed a significant correlation with the lateral acceleration peak in the early-stage osteoarthritis group (r = 0.56, p < 0.001). On the other hand, there was no significant correlation in the severe osteoarthritis group. The lateral thrust shows a positive correlation with the amount of change in medial meniscus extrusion by weight bearing in patients with early-stage knee osteoarthritis. Copyright © 2019 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved.

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