Intervertebral implant devices for supporting vertebrae and devices and methods for insertion thereof

A system for implanting an implant device within an intervertebral space between adjacent vertebrae, the system comprising:

• an implant body comprising a material selected from the group consisting of densified nanocrystalline hydroxyapatite, densified nanocrystalline tricalcium phosphate, and combinations thereof;
• a smooth, continuous implant body outer wall including a generally flat inserter-engaging wall flanked by a pair of curved inserter-engaging corner portions;
• and
• an inserter comprising an implant-engaging portion, the implant-engaging portion comprising a pair of arms sized and configured for providing substantially intimate engagement with the generally flat inserter-engaging wall and curved inserter-engaging corner portions.