A backboard (1) with an integrated head immobilizer (3, 4) adapted to operate from a rest position in which it is concealably received in the thickness of the backboard (1) to an operating position in which it projects out of it by being rotated and lifted therefrom, characterized in that said rotation of the head immobilizer (3, 4) is performed about an axis (A1, A2) of rotation that is located above the area over which the patients head passes or is positioned (S1).