A femoral stem (1; 100) for hip (A) prosthesis (R) is disclosed comprising: a main body (2) with a mainly longitudinal development and a generally wedge shaped, which is inserted into the femoral can (N) present in the body (C) of the femur (F); a central body (3; 101) of a generally trapezoidal shape integral with the main body (2), located in the proximal zone (Z) of the femur (F); an appendix (4) projecting from the central body (3; 101) provided with a terminal pin (5) receiving spherical head (S) of joint into the cotyle (I) belonging to the prosthesis (R) and inserted into the ace-tubular zone (E) of the pelvic bone (O). The main body (2) and the central body (3; 101) are defined by a shaped surface (6) on one side and a mixtilinear surface (7; 102) on the opposite side from which a shaped notch (8) is starting the central body (3; 101) and extending up to the proximity of the projecting appendix (4).