Sarassa, Carlos, et al. “A Modified Method for Reconstruction of the Medial Patellofemoral Ligament Using Quadriceps Tendon: A Technical Tip and Results”. Revista Colombiana De Ortopedia Y Traumatología, vol. 34, no. 1, May 2020, pp. 33-38, doi:10.1016/j.rccot.2020.04.011.