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Updated: Jul 13, 2026
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Electric and Magnetic Field Devices for Stimulation of Biological Tissues
Published on: May 15, 2021
Pulsed magnetic fields accelerate cutaneous wound healing in rats
Berish Strauch1, Mitesh K Patel, Jose A Navarro
1New York, N.Y. From the Department of Plastic and Reconstructive Surgery, Albert Einstein College of Medicine and Montefiore Medical Center; Department of Biomedical Engineering, Columbia University; and Department of Orthopedics, Mount Sinai School of Medicine.
Plastic and Reconstructive Surgery
|July 17, 2007
Summary
Pulsed magnetic fields significantly accelerated early wound healing in rats, increasing tensile strength by up to 59% at 21 days. This suggests potential for faster recovery in wound repair.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Wound Healing Research
Background:
- Previous research indicates pulsed magnetic fields (PMFs) may enhance fracture and chronic wound healing.
- This study investigates the biomechanical effects of specific radiofrequency PMF parameters on cutaneous wound healing.
- The aim was to determine if PMFs can accelerate the return of functional tensile strength in healing wounds.
Purpose of the Study:
- To characterize biomechanical changes in cutaneous wounds exposed to radiofrequency pulsed magnetic fields.
- To assess the potential of specific PMF dosage parameters to accelerate wound healing.
- To evaluate the impact of PMFs on the tensile strength of healing skin incisions in an animal model.
Main Methods:
- Two study phases involving 100 rats with 8-cm linear dorsal skin incisions.
- Phase 1: Wounds exposed to 1.0-G PMF for 30 minutes twice daily for 21 or 60 days.
- Phase 2: Prospective, placebo-controlled, double-blind trial using low-amplitude signals (0.02-0.05 G) for 21 days.
- Tensile strength measured using a tensiometer at a loading rate of 0.45 mm/second.
Main Results:
- Phase 1: Mean tensile strength was 48% greater in treated groups at 21 days (p < 0.001), with no significant difference at 60 days.
- Phase 2: Treated groups showed 18% (not significant), 44%, and 59% (p < 0.001) increases in tensile strength over controls at 21 days.
- Significant increases in wound tensile strength were observed with specific PMF configurations.
Conclusions:
- Pulsed magnetic fields with specific configurations can accelerate early wound healing in an animal model.
- Significantly increased wound tensile strength at 21 days provides evidence for accelerated healing.
- The findings support the potential therapeutic application of targeted PMFs in wound repair.
