Sun Xin, Huang Liyi, Wang Lu, Fu Chenying, Zhang Qing, Cheng Hongxin, Pei Gaiqin, Wang Yang, He Chengqi, Wei Quan
Rehabilitation Medical Center and Institute of Rehabilitation Medicine, West China Hospital, 12530Sichuan University, Chengdu, PR China.
Key Laboratory of Rehabilitation Medicine in Sichuan Province, Chengdu, PR China.
Clin Rehabil. 2022 May;36(5):636-649. doi: 10.1177/02692155221074052. Epub 2022 Jan 25.
To assess the effectiveness of pulsed electromagnetic field (PEMF) on pain and physical function in patients with low back pain.
A search of PubMed, Embase, Cochrane Library, and Web of Science was conducted up to December 2021.
We included randomized controlled trials that investigated the effectiveness of PEMF in patients with low back pain. The primary outcome was pain intensity and the secondary outcome was physical function, both were evaluated by assessment scales. Standardized mean difference (SMD) and 95% confidence interval (CI) were calculated for the summary statistics analysis. The registration number of this systematic review in PROSPERO is CRD42020213829.
Fourteen trials involving 618 participants were included. The PEMF treatment showed more significant pain alleviation than placebo or other therapy alone in patients with low back pain (SMD = -1.01, 95% CI -1.42 to -0.6, P < 0.001, I = 31%; SMD = -0.36, 95% CI -0.62 to -0.11, P = 0.005, I = 37%, respectively.) In addition, a significant difference in pain alleviation was observed in patients with chronic low back pain (SMD = -0.6, 95%CI - 0.94 to -0.25, p < 0.001, I = 67%), whereas no significant difference was observed in patients with acute low back pain (SMD = -0.46, 95%CI - 0.99 to 0.07, p = 0.09, I = 0%). PEMF did not improve physical function compared with the control treatment (SMD = -0.45, 95% CI - 0.98 to 0.07, p = 0.09, I = 86%).
PEMF is beneficial for alleviating pain in patients with chronic low back pain despite having no advantage in improving physical function.
评估脉冲电磁场（PEMF）对腰痛患者疼痛及身体功能的有效性。
截至2021年12月，检索了PubMed、Embase、Cochrane图书馆和科学网。
我们纳入了研究PEMF对腰痛患者有效性的随机对照试验。主要结局为疼痛强度，次要结局为身体功能，二者均通过评估量表进行评估。计算标准化均数差（SMD）和95%置信区间（CI）用于汇总统计分析。该系统评价在PROSPERO中的注册号为CRD42020213829。
纳入了14项试验，共618名参与者。与安慰剂或单独的其他疗法相比，PEMF治疗在腰痛患者中显示出更显著的疼痛缓解效果（SMD = -1.01，95%CI -1.42至-0.6，P < 0.001，I = 31%；SMD = -0.36，95%CI -0.62至-0.11，P = 0.005，I = 37%）。此外，在慢性腰痛患者中观察到疼痛缓解有显著差异（SMD = -0.6，95%CI -0.94至-0.25，p < 0.001，I = 67%），而在急性腰痛患者中未观察到显著差异（SMD = -0.46，95%CI -0.99至0.07，p = 0.09，I = 0%）。与对照治疗相比，PEMF并未改善身体功能（SMD = -0.45，95%CI -0.98至0.07，p = 0.09，I = 86%）。
尽管PEMF在改善身体功能方面没有优势，但对缓解慢性腰痛患者的疼痛有益。
