FLANGED ENDPLATE FOR AN INTERVERTEBRAL DISC PROSTHESIS AND INTERVERTEBRAL DISC PROSTHESIS INCORPORATING SAME
An endplate for an intervertebral disc prosthesis includes: a baseplate, sized and configured to fit within at least a portion of an intervertebral space, and an anterior portion having an outer vertebra-contacting surface extending outwardly from the baseplate at an acute angle with respect to an axis of the baseplate, and being provided with an opening configured to receive a fastener.
1 . An endplate for an intervertebral disc prosthesis, comprising:
a baseplate, sized and configured to fit within at least a portion of an intervertebral space, and
an anterior portion having an outer vertebra-contacting surface extending outwardly from the baseplate at an acute angle with respect to an axis of the baseplate, and being provided with an opening configured to receive a fastener.
2 . The endplate of claim 1 , wherein said acute angle is from about 30 degrees to about 60 degrees.
3 . The endplate of claim 1 , wherein said acute angle is about 45 degrees.
4 . The endplate of claim 1 , wherein said anterior portion is a flange.
5 . The endplate of claim 4 , wherein said flange extends anteriorly relative to an anterior edge of said baseplate.
6 . The endplate of claim 4 , wherein said flange extends from an anterior edge of said baseplate.
7 . The endplate of claim 1 , wherein said baseplate is sized and configured to fit within at least a portion of a cervical intervertebral space.
8 . An intervertebral disc prosthesis, comprising:
an upper endplate;
a lower endplate; and
a core, positioned between and secured to said upper endplate and said lower endplate,
wherein at least said upper endplate includes:
a baseplate, sized and configured to fit within at least a portion of an intervertebral space, and
an anterior portion having an outer vertebra-contacting surface extending outwardly from the baseplate at an acute angle with respect to an axis of the baseplate, and being provided with an opening configured to receive a fastener.
9 . The intervertebral disc prosthesis of claim 8 , wherein said acute angle is from about 30 degrees to about 60 degrees.
10 . The intervertebral disc prosthesis of claim 8 , wherein said acute angle is about 45 degrees.
11 . The intervertebral disc prosthesis of claim 8 , wherein said anterior portion is a flange.
12 . The intervertebral disc prosthesis of claim 11 , wherein said flange extends anteriorly relative to an anterior edge of said baseplate.
13 . The intervertebral disc prosthesis of claim 11 , wherein said flange extends from an anterior edge of said baseplate.
14 . The intervertebral disc prosthesis of claim 8 , wherein said prosthesis is sized and configured to fit within at least a portion of a cervical intervertebral space.
15 . The intervertebral disc prosthesis of claim 8 , wherein said lower endplate includes a projection for engagement with an adjacent vertebra.
16 . The intervertebral disc prosthesis of claim 15 , wherein said projection is a spike.
17 . The intervertebral disc prosthesis of claim 8 , wherein said core is an elastomeric core.