Graftless spinal fusion device

A graftless spinal implant for mechanically attaching two adjacent vertebrae includes a body (72) having first and second opposite surfaces (80,82). The first and second surfaces include at least one protruding member (74-77) for securing the body to adjacent vertebrae, wherein the exterior surfaces of the body and the first and second protruding members include a bioactive coating. The bioactive coating can be selected from coatings such as for example, hydroxyapatite. The exterior bioactive coating facilitates the ongrowth/ingrowth of vertebral bone between the implantable spinal fusion device and adjacent vertebrae. Advantageously, this allows the device to avoid the use of a bone graft and/or bone growth agents.