A range of femoral implants, comprising a plurality of femoral implants each intended to be implanted on a resected end of a femur, each femoral implant comprising: i. a receiving portion defining a cavity suitable for receiving the resected end of the femur, and ii. a cooperating portion arranged to cooperate with a tibial insert, the cooperating portion having an anterior surface (32.1) and a posterior surface (32.2), the anterior surface (32.1) and the posterior surface (32.2) being separated substantially by a frontal plane including an axis of revolution of the posterior condyles about which the posterior condyles rotate when the femoral implant is in use, the respective anterior surface (32.1) of each femoral implant having a medial edge (32.1M) and a lateral edge (32.1 L) delimiting medio-lateral widths (WML0, WML60) measured parallel to the axis of revolution of the posterior condyles, wherein the range of femoral implants comprises at least seven femoral implants ordered by increasing dimensions according to rows ranging from 1 to 7, and wherein a primary medio-lateral width, measured in the frontal plane including the axis of revolution of the posterior condyles, is equal to: - 58.5 ±1.5 mm for the femoral implant of row 1; - 61.5 ±1.5 mm for the femoral implant of row 2; - 64.5 ±1.5 mm for the femoral implant of row 3; - 67.5 ±1.5 mm for the femoral implant of row 4; - 70.5 ±1.5 mm for the femoral implant of row 5; - 73.5 ±1.5 mm for the femoral implant of row 6; and - 76.5 ±1.5 mm for the femoral implant of row 7; the range of femoral implants being characterized in that the respective anterior surface (32.1) of each femoral implant has a secondary medio-lateral width, measured in a secondary plane which includes a proximal axis and which forms an angle of 60 degrees with the frontal plane including the axis of revolution of the posterior condyles in projection in a sagittal plane, equal to: - 45.0 ±1 mm for the femoral implant of row 1; - 47.0 ±1 mm for the femoral implant of row 2; - 49.0 ±1 mm for the femoral implant of row 3; - 51.0 ±1 mm for the femoral implant of row 4; - 53.0 ±1 mm for the femoral implant of row 5; - 55.5 ±1.5 mm for the femoral implant of row 6; and - 58.5 ±1.5 mm for the femoral implant of row 7. i. a receiving portion defining a cavity suitable for receiving the resected end of the femur, and ii. a cooperating portion arranged to cooperate with a tibial insert, the cooperating portion having an anterior surface (32.1) and a posterior surface (32.2), the anterior surface (32.1) and the posterior surface (32.2) being separated substantially by a frontal plane including an axis of revolution of the posterior condyles about which the posterior condyles rotate when the femoral implant is in use, - 58.5 ±1.5 mm for the femoral implant of row 1; - 61.5 ±1.5 mm for the femoral implant of row 2; - 64.5 ±1.5 mm for the femoral implant of row 3; - 67.5 ±1.5 mm for the femoral implant of row 4; - 70.5 ±1.5 mm for the femoral implant of row 5; - 73.5 ±1.5 mm for the femoral implant of row 6; and - 76.5 ±1.5 mm for the femoral implant of row 7; - 45.0 ±1 mm for the femoral implant of row 1; - 47.0 ±1 mm for the femoral implant of row 2; - 49.0 ±1 mm for the femoral implant of row 3; - 51.0 ±1 mm for the femoral implant of row 4; - 53.0 ±1 mm for the femoral implant of row 5; - 55.5 ±1.5 mm for the femoral implant of row 6; and - 58.5 ±1.5 mm for the femoral implant of row 7.