Patent ID: 7621953

Claim:
A device for spacing first and second vertebral members comprising: an implant including first and second opposing ends with implant spikes that extend outward from at least the first end and an implant aperture in the first end; a spacer configured to attach to the first end of the implant comprising: a first surface that faces towards the implant; a second surface configured to face towards the first vertebral member, the second surface being positioned at an acute angle relative to the first surface; a plurality of apertures that extend into the first surface and through to the second surface with each of the plurality of apertures sized to receive one of the implant spikes; and a plurality of spikes that extend outward from the second surface configured to engage the vertebral member; and an extension extending outward from the first surface and including a flared end sized to fit within the implant aperture in the first end; the spacer including a thickness measured between the first and second surfaces that is less than a length of at least one of the implant spikes for the implant spike to extend through the spacer and outward beyond the second surface to engage with the vertebral member.