Packed demineralized cancellous tissue forms for disc nucleus augmentation, restoration, or replacement and methods of implantation

摘要

A composition for spinal disc repair comprising a plurality of uniformly shaped demineralized cancellous bone pieces ranging in size from about 2.0 mm to about 4.0 mm loaded into a porous mesh container with the cancellous bone pieces being treated so that they are not osteoinductive and are packed in the porous mesh container under compression forces.