Asymmetry of the knee extension deficit in standing affects weight-bearing distribution in patients with bilateral end-stage knee osteoarthritis

Kengo Harato, Takeo Nagura, Hideo Matsumoto, Toshiro Otani, Yoshiaki Toyama, Yasunori Suda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Purpose: The aim of this study was to evaluate weight-bearing distribution in patients with bilateral end-stage knee osteoarthritis (OA) and to clarify the gait parameters affecting the weight-bearing distribution during both standing and walking using gait analysis.

Methods: Twenty-five patients (averaged 71 years) with symptomatic bilateral end-stage medial knee OA participated in this study. They performed relaxed standing, placing one foot on a force plate and thereafter, level walking. First, knee resultant force was calculated on bilateral knees during standing. The knees in each patient were divided into Higher and Lower force side for the definition of dominant side limb. Second, gait parameters in each subject were compared between both sides.

Results: Each patient had large weight-bearing asymmetry, though passive range of motion, subjective pain level, femorotibial angle and radiographic disease severities were not significantly different between both sides. In standing, knees on Higher force side were significantly extended (11.2 ± 6.5°) than on Lower force side (14.4 ± 7.3°, P = 0.0086). Similarly, knees on Higher force side were also significantly extended at heel strike during gait. Besides, peak values of extension moment, knee adduction moment, knee adduction moment impulse and vertical force during gait were significantly greater on Higher force side.

Conclusions: Ability to extend the knee in standing was considered to be an essential factor to decide loading condition. It is clinically important to examine the ability to extend the knee in standing when considering loading asymmetry during gait in patients with bilateral knee OA.

Level of evidence: III.

Original languageEnglish
Pages (from-to)2608-2613
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume22
Issue number11
DOIs
Publication statusPublished - 2014 Oct 21

Fingerprint

Knee Osteoarthritis
Weight-Bearing
Knee
Gait
Aptitude
Walking
Heel
Articular Range of Motion
Extremities
Pain

Keywords

  • End-stage knee osteoarthritis
  • Extension deficit
  • Gait analysis
  • Standing
  • Weight-bearing distribution

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery
  • Medicine(all)

Cite this

Asymmetry of the knee extension deficit in standing affects weight-bearing distribution in patients with bilateral end-stage knee osteoarthritis. / Harato, Kengo; Nagura, Takeo; Matsumoto, Hideo; Otani, Toshiro; Toyama, Yoshiaki; Suda, Yasunori.

In: Knee Surgery, Sports Traumatology, Arthroscopy, Vol. 22, No. 11, 21.10.2014, p. 2608-2613.

Research output: Contribution to journalArticle

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