Gravini, G. et al. 2020. Variability in the positioning of femoral and tibial tunnels in the reconstruction of the anterior cruciate ligament: A NARRATIVE REVIEW. Revista Colombiana de Ortopedia y Traumatología. 34, 4 (Nov. 2020), 330–342. DOI:https://doi.org/10.1016/j.rccot.2020.09.004.