A spinal implant, particularly for the cervical vertebrae, has at least two apertures 44, 46 extending through its anterior portion. The apertures receive securing means such as bone screws and their axes are gently convergent such that, when projected onto a horizontal plane passing through the implant, they intersect outside of the implant's perimeter. Preferably the angle of convergence is between 13 and 15 degrees. The implant may receive two downwardly projecting screws (as in figure 3) or one screw projecting up and the other down (as in figure 4). Preferably the apertures are inclined at 45 degrees to the vertical. Also disclosed is a retaining plate (70, figures 9 and 10) to prevent backing out of the screws. It may pivot about amounting axle (72, figure 10) between locked and open positions. The implant is hollow so it can receive prosthetic bone material.
