Intervertebral implant with fixation geometry

An intervertebral implant comprising:

• a spacer having a first insertion end portion, a second end portion opposite the first insertion end portion, a first lateral side portion, a second lateral side portion, an upper surface, and a lower surface, the spacer configured and dimensioned for insertion between vertebrae;
• a plate secured to the second end portion of the spacer, the plate including at least two through holes defining first and second central hole axes, the at least two through holes configured and dimensioned to receive bone screws for securing the implant to adjacent vertebrae, the first through hole exits through the upper surface of the spacer, the second through hole exits through the lower surface of the spacer, the first and second central hole axes form non-zero angles with respect to the upper and lower surfaces of the spacer;
• and
• at least one keel formed on at least one of the upper and lower surfaces of the spacer wherein the at least one keel extends from the first insertion end portion of the spacer towards the second end portion of the spacer at least about 50 percent of a distance from the first insertion end portion to the second end portion.

An intervertebral implant comprising:

• a spacer having a first insertion end portion, a second end portion, an upper surface, and a lower surface, the spacer configured and dimensioned for insertion between vertebrae;
• a plate secured to the second end portion of the spacer, the plate including at least one blade configured and dimensioned to penetrate adjacent vertebrae;
• and
• an actuator for causing the at least one blade to move to penetrate adjacent vertebrae.