Methods and devices are described for the regulation of BMP 2 and 4, TGF-beta 1, 2, and 3, FGF-2, osteocalcin, and alkaline phosphatase mRNA in stem cells via capacitive coupling or inductive coupling of specific and selective electric and/or electromagnetic fields to the bone cells or other tissues containing the stem cells, where the specific and selective fields are generated by application of specific and selective signals to field generating devices disposed with respect to the stem cells so as to facilitate the treatment of diseased or injured bone and other tissues. The resulting methods and devices are useful for the targeted treatment of osteoporosis, osteopenia, osteonecrosis, fresh bone fractures, fractures at risk, nonunion, bone defects, spine fusion, and/or other conditions in which BMP 2 and 4, TGF-beta 1, 2, and 3, FGF-2, osteocalcin, and alkaline phosphatase mRNA and/or protein deficiencies in stem cells has been implicated.
