Prostheses, Tools And Methods For Replacement Of Natural Facet Joints With Artificial Facet Joint Surfaces
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- GMEDELAWARE 2
- Publication Date
- 2006-07-06
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
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Abstract
Description
FIELD OF THE INVENTION
[0001] This invention relates to prostheses for treating various types of spinal pathologies, as well as to methods of treating spinal pathologies. BACKGROUND OF THE INVENTION I. Vertebral Anatomy
[0002] As FIG. 1 shows, the human spinal column 10 is comprised of a series of thirty-three stacked vertebrae 12 divided into five regions. The cervical region includes seven vertebrae 12, known as C1-C7. The thoracic region includes twelve vertebrae 12, known as T1-T12. The lumbar region contains five vertebrae 12, known as L1-L5. The sacral region is comprised of five vertebrae 12, known as S1-S5. The coccygeal region contains four vertebrae 12, known as Co1-Cu4.
[0003] FIG. 2 shows a normal human lumbar vertebra 12. Although the lumbar vertebrae 12 vary somewhat according to location, they share many features common to most vertebrae 12. Each vertebra 12 includes a vertebral body 14 and posterior elements as follows:
[0004] Two short bones, the pedicles 16, extend...