A surgical device for anchorage of a prosthetic implant with at least one arm or flexible suspension link in muscle or ligament tissues comprises an elongated body, an anchor head located at one end of the body and provided with means of anchorage in the tissues, and at least one orifice, formed in the elongated body to attach to the at least one arm or flexible suspension link, that is associated with a non-return means adapted to enable adjustment of a useful length of the at least one arm or flexible suspension link and to prevent the at least one arm or flexible suspension link from sliding in a direction opposite its direction of insertion.