New study finds Combined Magnetic Field (CMF) bone growth stimulation to be significantly more effective than no stimulation for improving outcomes in lumbar spinal fusion surgery patients

Raiszadeh, Raiszadeh, Eaton et al. (2020) recently reported the results of a retrospective study to assess the effect of Combined Magnetic Field (CMF) bone growth stimulation on lumbar spinal fusion outcomes, as compared to no stimulation. This study reviewed fusion efficacy of a consecutive cohort of 652 patients who underwent lumbar surgery at the Spine Institute of San Diego between 2001 and 2018. Fusion status was determined via radiographic analysis, with four surgeons contributing data to this study. The minimum patient follow-up time was six months. Previously identified risk factors, such as smoking status, were also collected. Statistical analysis was performed using cross-tabulation tests with chi-square analyses, one-way ANOVA’s, and Tukey’s range tests. 53% (343/652) of patient had undergone adjuvant treatment with CMF stimulation. Results showed that patients who were treated with CMF stimulation had significantly greater fusion success of 97% compared to no stimulation at 62% (p < 0.00001). Further, it was observed that smokers had a significantly higher fusion success rate with CMF treatment than without electrical stimulation (94% versus 61%, p=0.000032). We concluded that additional studies are needed to evaluate the effectiveness of CMF treatment in patients with risk factors.1


Raiszadeh R, Raiszadeh K, Eaton L, Kim P, and Kim C. Effectiveness of combined magnetic therapy (CMF) bone growth stimulation on lumbar spinal fusion outcomes: a single center retrospective analysis comparing CMF to no-stimulation or other stimulators. 2020 May ;6(3) :xxx-xxx. ePub ahead of print 9Mar2020. DOI :