Partially resorbable implants and methods

An implant sized and adapted for insertion into an intervertebral space between adjacent vertebral bodies comprising:

• a non-resorbable, structural framework having top and bottom bone-contacting surfaces and a plurality of support columns extending between proximal and distal ends of the structural framework, the plurality of support columns being spaced apart from each other to define vertical openings in the framework, the structural framework including at least one keyed opening;
• a resorbable material component within and/or around the framework for resorption and formation of new bone to fuse the vertebral bodies together, the resorbable material component having top and bottom bone-contacting surfaces arranged to contact vertebral endplates over a contact surface area sufficient to reduce peak stresses between the structural framework and the vertebral bodies to reduce or eliminate subsidence of the structural framework into the vertebral bodies, the resorbable material component including at least one resorbable keyed opening aligned with the at least one key opening of the structural framework, and
• at least one bone anchor received in the at least one keyed opening to secure the bone anchor to the implant.

An implant sized and adapted for insertion into an intervertebral space between adjacent vertebral bodies comprising:

• a non-resorbable, structural framework having top and bottom bone-contacting surfaces and including at least one keyed opening, and
• a resorbable material component within and/or around the framework for resorption and formation of new bone to fuse the vertebral bodies together, the resorbable material component having top and bottom bone-contacting surfaces arranged to contact vertebral endplates over a contact surface area sufficient to reduce peak stresses between the structural framework and the vertebral bodies, the resorbable material component including a keyed interconnection portion that is substantially the same shape as the keyed opening of the structural framework,
• wherein the keyed opening and the keyed interconnection portion are aligned to allow engagement of a bone anchor with the implant.