An intervertebral prosthesis, in particular for the cervical spine, with two attachment plates connected in an articulated manner. The attachment surfaces of the attachment plates designed for attachment to the adjacent vertebral bodies have a base surface (3) intended to bear on the surface of the vertebral bodies , and self-tapping fixing projections rising from said base surface (3) . According to the invention, these fixing projections are formed by at least one pair of ribs (4) which extend in opposite directions obliquely with respect to a predetermined implantation direction (2) and whose side faces (5) oriented more away from the implantation direction are steeper than their side faces (6) or iented more in the implantation direction. The ribs can be toothed.本發明揭露一特別是用於頸椎之錐間假體,其具有以一活節方式連接之兩附接板。設計用來附接至相鄰錐體之附接板的附接表面係具有一預定用以支承在錐體的表面上之基底表面,而自攻式固定凸體自該基底表面升起。根據本發明,這些固定凸體係由至少一對的突肋形成,該至少一對的突肋係在相對於一預定植入方向之相反方向中歪斜地延伸且其定向為較遠離植入方向之側面係比其定向為較位於植入方向中之側面更為陡峭。突肋可為齒狀。1...中間平面2...植入方向3...基底表面4...突肋5...較腹側定向之側面6...較背側定向的側面7...尖銳切割邊緣
