Ortíz-Morales, Jorge Rolando, et al. “Heatley Modified Fulkerson Osteotomy for the Treatment of Patellar Femoral Pain. A Case Series”. Revista Colombiana De Ortopedia Y Traumatología, vol. 35, no. 3, Oct. 2020, pp. 229-35, doi:10.1016/j.rccot.2020.07.011.