Relationship between Pain and Muscle Activities of the Knee Joint during Walking in Patients with Severe Knee Osteoarthritis

Yosuke Honda; Kei Setogawa; Kiyotaka Kamiya; Hiroyuki Fujioka; Shinichi Yoshiya; Kazuhisa Domen

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Relationship between Pain and Muscle Activities of the Knee Joint during Walking in Patients with Severe Knee Osteoarthritis

VernacularTitle:重度変形性膝関節症患者における歩行時の疼痛と膝関節周囲筋筋活動との関係
Author: Yosuke HONDA ¹ ; Kei SETOGAWA ¹ ; Kiyotaka KAMIYA ¹ ; Hiroyuki FUJIOKA ² ; Shinichi YOSHIYA ³ ; Kazuhisa DOMEN ⁴
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1. Department of Physical Medicine and Rehabilitation, Hyogo Collage of Medicine Hospital
2. Department of Physical Therapy, School of Rehabilitation, Hyogo University of Health Sciences
3. Department of Orthopaedic Surgery, Hyogo Collage of Medicine Hospital
4. Department of Rehabilitation Medicine, Hyogo Collage of Medicine Hospital
Keywords: knee osteoarthritis; muscle activities; pain
From:The Japanese Journal of Rehabilitation Medicine 2018;55(8):702-706
CountryJapan
Language:Japanese
Abstract: Objective：To investigate the relationship between clinical assessment of pain and muscle activity during walking in patients with severe knee osteoarthritis (OA)．Methods：Eleven patients diagnosed as having severe knee OA (13 knees) were evaluated with electromyography and numerical rating scale (NRS) of pain during walking. Electromyography was recorded from the vastus medialis (VM), semitendinosus (ST), vastus lateralis (VL), and biceps femoris (BF) muscles. Co-contraction indexes (CCIs) for the extensor and flexor muscles of the knee joint were calculated as follows：using the VM and ST data for CCI at the medial aspect of the knee and the VL and BF data for CCI at the lateral aspect. Spearman's rank correlation coefficients between the average individual muscle activities or CCI and pain were calculated.Results：During the terminal stance of walking, NRS significantly correlated with the activation patterns of BF (r ＝－0.61, p＜0.05), the CCI of VL-BF (r ＝－0.582, p＜0.05), and the CCI of VM-ST (r ＝－0.596, p＜0.05)．Conclusion：This study suggests that pain severity is reflected in increasing CCI at the medial and lateral aspects during the terminal stance phase in severe knee OA.