This study examined the effects of extremely low frequency electromagnetic fields (1-1000 Hz, 4 gauss) on new bone fractures of female patients. Results led the authors to suggest that EMF treatment accelerates the early stages of fracture healing.
O. Wahlstrom, “Stimulation of Fracture Healing with Electromagnetic Fields of Extremely Low Frequency (EMF of ELF),” Clin Orthop, (186), June 1984, . 293-301.