The effects of pulsed electromagnetic field (PEMF) therapy on muscle strength and function in patients with end stage knee osteoarthritis: a double-blinded randomized control trial
Refereed conference paper presented and published in conference proceedings
CUHK Authors
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AbstractIntroduction: Osteoarthritis (OA) of the knee is one of the most common chronic degenerative joint conditions affecting our aging population. Improving knee extensor strength has been suggested as an effective means for pain relief and improving function in patients with OA knee. This study aimed to compare the effectiveness in improving muscle strength with home-based exercises alone vs home-based exercises together with pulsed electromagnetic field (PEMF therapy) in patients with OA knee.
Methods: A total of 60 patients with end-stage OA knee were randomly assigned to home-based exercise alone or with the addition of PEMF. Quadriceps and hamstring muscle strength with two trials were recorded. The 5-time sit-to-stand and 6 meters gait speed tests were assessed to reflect the muscle function.
Results: Significant time difference was found in symptomatic knee extension muscle strength (p=0.003), flexion muscle strength (p=0.015), contralateral knee extension (p=0.002), and flexion muscle strength (p=0.032) in both treatment groups. Home-based exercises + PEMF resulted in significantly higher knee extension (p=0.019) and flexion strength (p=0.027) compared with the home-based exercise group. A significant time difference was found in gait speed (p=0.016) and 5STS stand test (p<0.001) in the home exercise + PEMF group.
Discussion and Conclusion: Home-based exercise + PEMF may be a better treatment to improve knee muscle strength. Both groups received home-based exercise programs that can help them improve the physical function of performing chair-stand, but PEMF could achieve better physical function of performing chair-stand and gait speed.
Methods: A total of 60 patients with end-stage OA knee were randomly assigned to home-based exercise alone or with the addition of PEMF. Quadriceps and hamstring muscle strength with two trials were recorded. The 5-time sit-to-stand and 6 meters gait speed tests were assessed to reflect the muscle function.
Results: Significant time difference was found in symptomatic knee extension muscle strength (p=0.003), flexion muscle strength (p=0.015), contralateral knee extension (p=0.002), and flexion muscle strength (p=0.032) in both treatment groups. Home-based exercises + PEMF resulted in significantly higher knee extension (p=0.019) and flexion strength (p=0.027) compared with the home-based exercise group. A significant time difference was found in gait speed (p=0.016) and 5STS stand test (p<0.001) in the home exercise + PEMF group.
Discussion and Conclusion: Home-based exercise + PEMF may be a better treatment to improve knee muscle strength. Both groups received home-based exercise programs that can help them improve the physical function of performing chair-stand, but PEMF could achieve better physical function of performing chair-stand and gait speed.
All Author(s) ListJonathan Patrick Ng, Qian-wen Wang, Gene Chi-Wai Man, Chi-yin Chow, Ji-Hong Qiu, Ming-Qian Yu, Xin He, Michael Tim-Yun Ong, Patrick Shu-Hang Yung
Name of ConferenceThe HKOA 43rd Annual Congress of The Hong Kong Orthopaedic Association
Start Date of Conference04/11/2023
End Date of Conference05/11/2023
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Year2023
Month11
PublisherHong Kong Academy of Medicine Press
Place of PublicationHong Kong
Pages122 - 122
LanguagesEnglish-United States
