Spinal disk implant and implantation kit

A spinal disk implant, comprising a solid body having:

• four faces arranged to define a right-rectangular body, including two opposed side faces and two opposed transverse faces, at least one of the transverse faces having a central region with three-dimensional features thereon raised above the transverse face and an anterior platform region lying along an anterior margin of the transverse face;
• a convexly curved anterior face defining one end of the right-rectangular body;
• and
• a posterior face defining the other end of the right-rectangular body, the solid body being made of a material selected from the group consisting of a ceramic, a metal, a polymer, and a composite material.

A spinal disk implant, comprising a solid body having

• a convexly curved anterior face, the anterior face having a curvature of about that of the anterior surface of a human vertebra and having an anterior face lateral margin and a curved anterior face transverse margin;
• a posterior face spaced apart from the anterior face and having a posterior face lateral margin and a posterior face transverse margin;
• a pair of generally parallel, spaced apart, opposed side faces extending between the lateral margins of the anterior face and the posterior face;
• and
• pair of spaced a part, opposed transverse faces extending between the transverse margins of the anterior face and the posterior face, each transverse face having an anterior platform and at least one of the transverses faces having an engagement region located posterior of the anterior platform, the engagement region having three-dimensional features thereon raised above the transverse face, a width of the anterior platform being about that of a thickness of anterior cortical bone of a human vertebra,
• the spinal disk implant being made of a nonmetallic material selected from the group consisting of calcium phosphate and hydroxylapatite.