Prothesis for the replacement of a posterior element of a vertebra
View Patent ↗Prosthetic replacement for a posterior element of a vertebra comprising portions that replace the natural lamina and the four natural facets. The prosthetic replacement may also include portions that replace one or more of the natural spinous process and the two natural transverse processes. If desired, the prosthesis replacement may also replace the natural pedicles. A method for replacing a posterior element of a vertebra is also provided.
1. A prosthetic implant comprising:
a body portion configured to attach to a vertebral body, the body portion comprising an upper portion corresponding to at least one prosthetic superior facet and a lower portion corresponding to at least one prosthetic inferior facet;
a first mount and a second mount attached to the upper portion, wherein the first mount and the second mount are configured to each receive a fixation member independent of the body portion.
2. The implant of claim 1 , wherein the upper portion comprises a left prosthetic superior facet and a right prosthetic superior face.
3. The implant of claim 2 , wherein the lower portion comprises a left prosthetic superior face and a right prosthetic superior facet.
4. The implant of claim 3 , wherein a left prosthetic laminar is positioned adjacent the left lower portion and a right prosthetic laminar is positioned adjacent the right tower portion.
5. The implant of claim 4 , wherein a prosthetic spinous process is positioned between the left prosthetic lamina and the right prosthetic lamina.
6. The implant of claim 1 , wherein each fixation member is a pedicle screw.
7. The implant of claim 6 , wherein the upper portion comprises a left prosthetic superior facet and a right prosthetic superior facet.
8. The implant of claim 7 , wherein the lower portion comprises a left prosthetic inferior facet and a right prosthetic inferior facet.
9. The implant of claim 8 , wherein the body portion is a unitary body, wherein the unitary body further comprises a prosthetic spinous process.
10. The implant of claim 6 , further comprising a first prosthetic transverse process that extends from the first mount and a second prosthetic transverse process that extends from the second mount.
11. The implant of claim 10 , wherein the first prosthetic transverse process and the second prosthetic transverse process each comprise one or more holes.
12. A prosthetic implant comprising:
a body portion configured to attach to a vertebral body, the body portion comprising an upper portion corresponding to at least one prosthetic superior facet and a lower portion corresponding to at least one prosthetic inferior facet;
a first mount and a second mount attached to the upper portion, wherein the first mount and the second mount are configured to each receive a fixation device independent of the body portion;
a first fixation member received through the first mount; and
a second fixation received through the second mount.
13. The implant of claim 12 , wherein the first fixation member and the second fixation member are pedicle screws.
14. The implant of claim 12 , wherein the body portion has a curved upper surface.
15. The implant of claim 12 , wherein the upper portion comprises a left prosthetic superior facet and a right prosthetic superior facet.
16. The implant of claim 12 , wherein the body portion is a unitary body that further comprises a prosthetic spinous process.
17. The implant of claim 16 , further comprising a first prosthetic transverse process and a second prosthetic transverse process.
18. The implant of claim 17 , wherein each of the first prosthetic transverse process and the second transverse process comprise a plurality of holes.
19. The implant of claim 12 , wherein the lower portion comprises a left prosthetic inferior facet and a right prosthetic inferior facet, wherein the left prosthetic inferior facet is adjacent a left prosthetic lamina and the right prosthetic inferior facet is adjacent a right prosthetic lamina.
20. The implant of claim 19 , wherein the left prosthetic lamina and the right prosthetic lamina each transition into opposing sides of a prosthetic spinous process.