Comment on: "French adaptation of the new Knee Society Scoring System for total knee arthroplasty" by Debette C., Parratte S., Maucort-Boulch D., Blanc G., Pauly V., Lustig S., Servien E., Neyret P., Argenson JN. published in Orthop Traumatol Surg Res 2014; 100(5): 531-4