In this range, each of the femoral prosthesis comprises a rod (t1.1 - t1.9), a neck (c1.1 - c1.9) and a head. A first series of p femoral prostheses with necks long and a second series of p prostheses with necks means. The p femoral prostheses of the first series and the second series are of size x, x varies between 1 and p. the first and second series of femoral prostheses are composed of the first families and second families f. Each first family and each second family comprises at least four femoral prostheses which are distributed over at least two different sizes, t. The dimensions of the femoral prostheses are determined so that the offset of a femoral prosthesis of size x having a neck is substantially equal to the offset of a femoral prosthesis of size x + 1 having a neck, whatever x.
