Chiu, Fang-Yao. “The Native Femoral Sulcus As the Guide for the Medial Lateral Position of the Femoral Component in Knee Arthroplasty: Normal Patellar Tracking in 690 700 knees—a Prospective Evaluation”. Acta Orthopaedica, vol. 77, no. 3, Jan. 2006, pp. 501-4, doi:10.1080/17453670610046460.