Intervertebral disc prosthesis, and systems and methods for implantation of the same

A prosthesis for an intervertebral disc prosthesis system, the prosthesis comprising:

• an upper plate including a superior surface with at least one set of upper teeth, and an inferior surface;
• a lower plate including a superior surface with a first protrusion located proximate to a first side edge of the lower plate and a second protrusion located proximate to a second side edge of the lower plate, and an inferior surface with at least one set of lower teeth;
• and
• an insert located between the upper plate and the lower plate, wherein the insert includes a superior surface with a convex region, wherein the insert includes an inferior surface that is substantially flat, wherein the insert includes a first recess corresponding to the first protrusion and that intersects a first sidewall of the insert while extending through the insert from the inferior surface of the insert to the superior surface of the insert, wherein the insert includes a second recess corresponding to the second protrusion and that intersects a second sidewall of the insert while extending through the insert from the inferior surface of the insert to the superior surface of the insert,
• wherein at least one of a rear edge of the upper plate and a rear edge of the lower plate includes at least one engagement feature able to engage with a corresponding engagement feature of a cartridge insertable into an instrument of the intervertebral disc prosthesis system.

A prosthesis for an intervertebral disc prosthesis system, the prosthesis comprising:

• an upper plate including a superior surface with at least one set of upper teeth, and an inferior surface, wherein the upper plate includes at least one engagement feature with a ledge that extends from a rear edge of the upper plate to a notch in the upper plate, wherein the ledge of the upper plate transitions directly into the notch of the upper plate such that a shared surface of the ledge and the notch of the upper plate is at least partially defined by an edge with a straight portion of the upper plate;
• a lower plate including a superior surface with at least one protrusion, and an inferior surface with at least one set of lower teeth, wherein the lower plate includes at least one engagement feature with a ledge that extends from a rear edge of the lower plate to a notch in the lower plate, wherein the ledge of the lower plate transitions directly into the notch of the lower plate such that a shared surface of the ledge and the notch of the lower plate is at least partially defined by an edge with a straight portion of the lower plate;
• and
• an insert located between the upper plate and the lower plate, wherein the insert includes a superior surface with a convex region, wherein the insert includes an inferior surface that is substantially flat, wherein the insert includes at least one recess able to receive the protrusion, wherein a particular recess of the at least one recess corresponds to a particular protrusion of the at least one protrusion.