《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2023, Vol. 29 ›› Issue (3): 356-363.doi: 10.3969/j.issn.1006-9771.2023.03.016

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Characterastics of muscle architectural parameters for early knee osteoarthritis in middle-aged and elderly women

YU Lili1,2a, HUANG Qiuchen1,2a, CUI Zhigang1,2b, LI Desheng1,2a, HU Chunying1,2a, YE Miao1,2a, LIU Kemin1,2b()   

  1. 1. Capital Medical University School of Rehabilitation Medicine, Beijing 100068, China
    2. a. Department of Spinal Cord Injury and Bone Diseases Physical Therapy (PT2); b. Department of Orthopedic and Osteoarthropathy Rehabilitation, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China
  • Received:2023-01-14 Revised:2023-02-24 Published:2023-03-25 Online:2023-04-14
  • Contact: LIU Kemin E-mail:keminlqliu@sina.com

Abstract:

Objective To observe the architectural parameter changes of the muscles around the knee in middle-aged and elderly women with early knee osteoarthritis (KOA) by musculoskeletal ultrasound, and to clarify the indicators of muscles that affect early KOA.

Methods From January to August, 2022, 20 healthy middle-aged and elderly healthy women (controls) and 20 middle-aged and elderly women with unilateral early KOA (KOA group) were recruited through Beijing Bo'ai Hospital, to measure muscle thickness of the popliteus muscle, the muscle thickness and the pennation angle of the quadriceps, as rectus femoris, vastus intermedius, vastus lateralis, vastus medialis longus and vastus medialis oblique.

Results Compared with the healthy limb of KOA group, and the controls, the muscle thickness of vastus medialis longus, vastus medialis oblique and popliteus muscle of the affected limb of KOA group became thinner (t > 2.133, P< 0.05); the proportion of thickness of vastus medialis oblique to thickness of vastus lateralis became smaller (t > 3.660, P< 0.05). The pennation angle was smaller in the affected limb of KOA group than in the matched dominant side of the controls (t= 3.101, P < 0.05). Logistic regression analysis showed that the muscle thickness of vastus medialis oblique (OR = 0.235, 95%CI 0.068 to 0.805, P = 0.021) and popliteus muscle (OR = 0.387, 95%CI 0.152 to 0.980, P = 0.045) were related to the onset of early KOA.

Conclusion The thickness of vastus medialis longus, vastus medialis oblique and popliteus muscle decrease, and the balance of the strength of vastus medialis oblique and vastus lateralis weakens in the affected limbs of the middle-aged and elderly women with early KOA. The thickness of vastus medialis oblique and popliteus muscle are protective factors for onset of KOA.

Key words: early knee osteoarthritis, vastus medialis oblique, popliteus muscle, musculoskeletal ultrasound, muscle architectural parameter

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