Microcurrent has some very beneficial effects on injured tissue healing that are well documented.

Portable microcurrent equipment is applied during a clinic session and can often be taken home by the patient for continuous use over a number of days. Alternatively, a series of in-clinic treatment sessions can be arranged.

Below is a small sample of the literature on the use of microcurrent:

Lee BY, AL-Waili N, Stubbs D, et al. Ultra-low microcurrent in the management of diabetes mellitus, hypertension and chronic wounds: Report of twelve cases and discussion of mechanism of action. International Journal of Medical Sciences. 2010;7(1):29-35. [PDF with images] [2nd study: Venous Stasis Ulcers, Northeast Center for Special Care, Lake Katrine, NYC, USA].

McMakin CR, Oschman JL. Visceral and Somatic Disorders: Tissue Softening with Frequency-Specific Microcurrent. Journal of Alternative and Complementary Medicine. 2013;19(2):170-177. doi:10.1089/acm.2012.0384.

Yu C, Hu Z-Q, Peng R-Y. Effects and mechanisms of a microcurrent dressing on skin wound healing: a review. Military Medical Research 2014, 1:24

Alvarez OM, Mertz PM, Smerbeck RV, Eaglstein WH. J Invest Dermatol. The healing of superficial skin wounds is stimulated by external electrical current. 1983 Aug;81(2):144-8.

Sugimoto M, Maeshige N, Honda H, Yoshikawa Y, Uemura M, Yamamoto M, Terashi H. Optimum microcurrent stimulation intensity for galvanotaxis in human fibroblasts. J Wound Care. 2012 Jan;21(1):5-6, 8,10; discussion 10-1.

Ahmeda AF, Elgayedb SSA, Ibrahimc IM. Polarity effect of microcurrent electrical stimulation on tendon healing: Biomechanical and histopathological studies. Journal of Advanced Research
Volume 3, Issue 2, April 2012, Pages 109–117.

Ciccone CdeC, Zuzzi DC, Neves LMG, Mendonça JS, Joazeiro PP, Esquisatto MAM. Effects of microcurrent stimulation on Hyaline cartilage repair in immature male rats (Rattus norvegicus). BMC Complementary and Alternative Medicine 2013, 13:17.

L M G Neves, R L Matheus, G M T Santos, M A M Esquisatto, M E C Amaral and F A S Mendon. Effects of microcurrent application and 670 nm InGaP low-level laser irradiation on experimental wound healing in healthy and diabetic Wistar rats. 2013 Laser Phys. 23/3.

Castro FC, Magre A, Cherpinski R, Zelante PM, Neves LM, Esquisatto MA, Mendonça FA, Santos GM. Effects of microcurrent application alone or in combination with topical Hypericum perforatum L. and Arnica montana L. on surgically induced wound healing in Wistar rats. Homeopathy. 2012 Jul;101(3):147-53.

US National Library of Medicine National Institutes of Health database references