Highlights:
- Faster recovery after vertebral fracture surgery: Women who received PEMF showed better performance in functional tests (like the 6-minute walk and chair sit-and-reach) as early as one month after surgery compared with controls.
- Less pain and better quality of life: By three months, the PEMF group reported reduced low back pain, improved physical function, and higher health-related quality of life scores versus the control group.
- Improved bone quality, not just symptoms: While hip bone density did not change, PEMF significantly enhanced bone microarchitecture in the tibia and radius, key markers of bone strength and fracture resistance.
- Non-invasive adjunct to standard care: The authors conclude that PEMF may be a valuable, low-risk addition to postoperative rehabilitation for postmenopausal vertebral fractures, offering analgesic benefits, functional gains, and potential protection against future fractures.
Vertebral fractures in postmenopausal women are a common and debilitating complication of osteoporosis. Beyond causing chronic pain and mobility limitations, these fractures can significantly reduce quality of life and increase the risk of future fractures. In this context, identifying safe and effective strategies to support postoperative recovery is critical. Pulsed Electromagnetic Field (PEMF) therapy has emerged as a promising non-invasive intervention with analgesic and potential bone-protective effects.
Study Intervention
A randomized controlled trial conducted by Liu et al. (2021) investigated the effects of PEMF therapy on 82 postmenopausal women who had undergone surgery for vertebral fractures. Participants were divided into two groups: 40 received PEMF therapy postoperatively, while 42 were assigned to a control group. The PEMF sessions were applied throughout the postoperative period, and participants were monitored for up to three months.
Clinical outcomes assessed included low back pain, physical function, health-related quality of life (HRQoL), hip bone mineral density (BMD), and bone microarchitecture of the tibia and radius. These parameters were measured one and three months after surgery.
Results
After one month, participants in the PEMF group showed significant improvements in psychological scores, the 6-minute walk test, and the chair sit-and-reach test compared to the control group.
At the three-month mark, these benefits extended to better outcomes in health-related quality of life, reduced back pain, and enhanced physical function.
Although PEMF had no significant impact on hip BMD, it did significantly improve bone microarchitecture in the radius and tibia—important indicators of bone quality—at three months post-fracture.
Figure 1. Improvements in Pain, Quality of Life, and Walking Distance 3 Months After Vertebral Fracture Surgery: PEMF vs Control. Bars show change from baseline to 3 months (positive values = improvement) in lumbar back pain (VAS), health-related quality of life (EuroQoL VAS), and 6-minute walk distance in postmenopausal women recovering from vertebral fracture surgery. Compared with the control group, patients receiving PEMF therapy experienced larger reductions in pain, greater gains in quality of life, and a bigger increase in walking distance. Stars added above each outcome indicate statistically significant between-group differences at 3 months (pain p = 0.02; EuroQoL VAS p = 0.04; 6-MWT p = 0.01).
Conclusions
The study demonstrated that PEMF therapy may be an effective adjunctive strategy for enhancing recovery in postmenopausal women with vertebral fractures. According to the authors, PEMF offers non-invasive analgesic benefits, supports functional improvements, and may help reduce the risk of refractures by promoting better bone quality. These findings support the inclusion of PEMF in postoperative rehabilitation programs aimed at improving patient outcomes after vertebral fractures.
Reference: Liu W, Jin X, Guan Z, Zhou Q. Pulsed Electromagnetic Field Affects the Development of Postmenopausal Osteoporotic Women with Vertebral Fractures. Biomed Res Int. 2021; 2021:4650057. Published 2021; 16. doi:10.1155/2021/4650057