Vaca-González, Juan Jairo, et al. “The Articular Cartilage: Structure and Pathologies, and Electrical Fields As a Therapeutic Alternative. A Review of Current Concepts”. Revista Colombiana De Ortopedia Y Traumatología, vol. 31, no. 4, July 2017, pp. 202-10, doi:10.1016/j.rccot.2017.06.002.