A range of femoral implants (0-8), comprising a plurality of femoral implants (0-8) each intended to be implanted on a resected end of a femur , each femoral implant (0-8) 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 (PF) including an axis of revolution of the posterior condyles (A) about which the posterior condyles rotate when the femoral implant (0-8) is in use, the respective anterior surface (32.1) of each femoral implant (0-8) 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 (A), wherein the range of femoral implants (0-8) comprises at least seven femoral implants (1-7) ordered by increasing dimensions according to rows ranging from 1 to 7, and wherein a primary medio-lateral width (WML0), measured in the frontal plane (PF) including the axis of revolution of the posterior condyles (A), 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 (0-8) being characterized in that the respective anterior surface (32.1) of each femoral implant (0-8) has a secondary medio-lateral width (WML60), measured in a secondary plane (P60) which includes a proximal axis (AP) and which forms an angle (A60) of 60 degrees with the frontal plane (PF) including the axis of revolution of the posterior condyles (A) in projection in a sagittal plane (PS), 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 (PF) including an axis of revolution of the posterior condyles (A) about which the posterior condyles rotate when the femoral implant (0-8) 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. <EOS>