Department of Rehabilitation Medicine Center, West China Hospital, Sichuan University, Chengdu, P. R. China.
Key Laboratory of Rehabilitation Medicine in Sichuan Province, Chengdu, P.R. China.
Bioelectromagnetics. 2020 Jul;41(5):323-337. doi: 10.1002/bem.22271. Epub 2020 Jun 3.
The effect of pulsed electromagnetic field (PEMF) on bone healing is still uncertain and it has not been established as a standardized treatment. The aim of this systematic review and meta-analysis is to evaluate the effect of PEMF on bone healing in patients with fracture. We searched CNKI, Wan Fang, VIP, EMbase, PubMed, CENTRAL, Web of Science, Physiotherapy Evidence Database, and Open Grey websites for randomized controlled trials (published before July 2019 in English or Chinese) comparing any form of PEMF to sham. Reference lists were also searched. Related data were extracted by two investigators independently. The bias risk of the articles and the evidence strength of the outcomes were evaluated. Twenty-two studies were eligible and included in our analysis (n = 1,468 participants). The pooled results of 14 studies (n = 1,131 participants) demonstrated that healing rate in PEMF group was 79.7% (443/556), and that in the control group was 64.3% (370/575). PEMF increased healing rate (RR = 1.22; 95% confidence interval [CI] = 1.10-1.35; I = 48%) by the Mantel-Haenszel analysis, relieved pain (standardized mean difference (SMD) = -0.49; 95% CI = -0.88 to -0.10; I = 60%) by the inverse variance analysis, and accelerated healing time (SMD = -1.01; 95% CI = -2.01 to -0.00; I = 90%) by the inverse variance analysis. Moderate quality evidence suggested that PEMF increased healing rate and relieved pain of fracture, and very low-quality evidence showed that PEMF accelerated healing time. Larger and higher quality randomized controlled trials and pre-clinical studies of optimal frequency, amplitude, and duration parameters are needed. © 2020 Bioelectromagnetics Society.
脉冲电磁场(PEMF)对骨愈合的影响尚不确定,尚未确立为标准化治疗方法。本系统评价和荟萃分析的目的是评估 PEMF 对骨折患者骨愈合的影响。我们检索了中国知网、万方、VIP、EMbase、PubMed、CENTRAL、Web of Science、Physiotherapy Evidence Database 和 Open Grey 网站,以获取比较任何形式的 PEMF 与假对照的随机对照试验(2019 年 7 月前发表的英文或中文)。还检索了参考文献列表。由两位研究者独立提取相关数据。评估了文章的偏倚风险和结果的证据强度。22 项研究符合纳入标准并纳入分析(n=1468 名参与者)。14 项研究(n=1131 名参与者)的汇总结果显示,PEMF 组愈合率为 79.7%(443/556),对照组为 64.3%(370/575)。Mantel-Haenszel 分析显示,PEMF 可提高愈合率(RR=1.22;95%置信区间 [CI]:1.10-1.35;I=48%),方差倒数分析显示可减轻疼痛(标准化均数差 [SMD]=-0.49;95%CI:-0.88 至-0.10;I=60%),方差倒数分析显示可加速愈合时间(SMD=-1.01;95%CI:-2.01 至-0.00;I=90%)。中等质量证据表明,PEMF 可提高骨折愈合率和减轻疼痛,极低质量证据表明,PEMF 可加速愈合时间。需要更大规模、更高质量的随机对照试验和优化频率、幅度和持续时间参数的临床前研究。
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