Chinese Journal of Rehabilitation Theory and Practice ›› 2026, Vol. 32 ›› Issue (6): 653-664.doi: 10.3969/j.issn.1006-9771.2026.06.004

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Effect of neuromuscular electrical stimulation on patients after total knee arthroplasty: a meta-analysis

LI Wen1,2, YAN Xinyue3, HUANG Qiuchen1,2, ZHANG Rui1,2, SUN Yuemei1,2, ZHOU Yue1,2()   

  1. 1 Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China
    2 Capital Medical University School of Rehabilitation Medicine, Beijing 100068, China
    3 College of Rehabilitation Medicine, Shandong University of Traditional Chinese Medicine, Ji'nan, Shandong 250355, China
  • Received:2025-11-20 Revised:2026-03-19 Published:2026-06-25 Online:2026-06-24
  • Supported by:
    Cultivation Project of China Rehabilitation Research Center(2025ZX-08)

Abstract:

Objective To evaluate the effect of neuromuscular electrical stimulation(NMES)on pain, quadriceps strength and motor function of patients after total knee arthroplasty(TKA).
Methods The databases of CNKI, Wanfang data, VIP, PubMed, Embase, Cochrane, Web of Science and Scopus were retrieved from inception to April, 2025. Randomized controlled trials(RCT)related to the intervention of NMES after TKA were collected. The quality of the included literature was evaluated using the Cochrane Risk of Bias Assessment Tool and the Physical Therapy Evidence Database(PEDro)scale. Meta-analysis was performed with RevMan 5.4.
Results A total of twelve RCT were included, involving 772 subjects. The PEDro scale score ranged from four to seven. NMES improved postoperative quadriceps muscle strength(SMD=0.61, 95%CI 0.34 to 0.88, P<0.001)and knee flexion range of motion(SMD=1.35, 95%CI 0.30 to 2.41, P=0.010), and reduced the Timed Up and Go Test(TUGT)time(SMD=-0.86, 95%CI -1.45 to -0.26, P=0.005). Compared with the control group, the intervention group achieved better outcomes in the 2-Minute Walk Test(2MWT)(SMD=19.44, 95%CI 10.44 to 30.43, P<0.001), 3-Minute Walk Test(SMD=23.57, 95%CI 14.77 to 32.36, P<0.001), 6-Minute Walk Test(SMD=42.29, 95%CI 9.71 to 74.86, P=0.010), Western Ontario and McMaster Universities Osteoarthritis Index(WOMAC)(SMD=-0.52, 95%CI -1.00 to -0.04, P=0.040), as well as the Physical Component Summary(PCS)(SMD=2.90, 95%CI 0.73 to 5.06, P=0.009)and Mental Component Summary(MCS)(SMD=2.84, 95%CI 1.40 to 4.28, P=0.040)of the 36-Item Short Form Health Survey(SF-36). Subgroup analysis demonstrated that two to four weeks after surgery, NMES enhanced patients' quadriceps muscle strength(SMD=0.90, 95%CI 0.58 to 1.21, P<0.001), shortened TUGT time(SMD=-1.28, 95%CI -2.57 to -0.02, P<0.05)and increased walking distance in 2MWT(SMD=20.43, 95%CI 10.44 to 30.43, P<0.001). For patients followed up for two to three months, NMES yielded improvements in WOMAC scores(SMD=-0.44, 95%CI -0.79 to -0.09, P=0.010)and SF-36 MCS scores(SMD=4.17, 95%CI 2.43 to 5.91, P<0.001).
Conclusion NMES can significantly improve the quadriceps strength and walking ability of the TKA patients two to four weeks after surgery, and enhance the quality of life of patients two to three months after surgery.

Key words: total knee arthroplasty, neuromuscular electrical stimulation, meta-analysis

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