Facet arthroplasty devices and methods
First Claim
1. A prosthesis to replace a cephalad portion of a left natural facet joint on a vertebral body and a cephalad portion of a right natural facet joint on the vertebral body, the prosthesis comprising an integrated base member including left and right side regions and a mid-region joining the side regions without fixation of the mid-region to bone, to form the integrated base member, a fixation area on at least one of the left and right side regions to accommodate fixation of the integrated base member to the vertebral body, an artificial left facet joint structure on the left side region adapted and configured to replace a cephalad portion of the left natural facet joint, and an artificial right facet joint structure on the right side region adapted and configured to replace a cephalad portion of the right natural facet joint.
13 Assignments
0 Petitions
Accused Products
Abstract
Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.
-
Citations
31 Claims
-
1. A prosthesis to replace a cephalad portion of a left natural facet joint on a vertebral body and a cephalad portion of a right natural facet joint on the vertebral body, the prosthesis comprising
an integrated base member including left and right side regions and a mid-region joining the side regions without fixation of the mid-region to bone, to form the integrated base member, a fixation area on at least one of the left and right side regions to accommodate fixation of the integrated base member to the vertebral body, an artificial left facet joint structure on the left side region adapted and configured to replace a cephalad portion of the left natural facet joint, and an artificial right facet joint structure on the right side region adapted and configured to replace a cephalad portion of the right natural facet joint.
-
15. A prosthesis to replace a cephalad portion of a natural facet joint on a vertebral body comprising
a base member, a fixation area on the base member to accommodate fixation of the base member to the vertebral body, and an artificial facet joint structure on the base member including means for replacing a cephalad portion of a natural facet joint after removal of at least a portion of an inferior articular processes and at least a portion of a lamina from the vertebral body.
-
22. A prosthesis to replace a caudal portion of a natural facet joint on a vertebral body comprising
a stem member including a fixation area to accommodate fixation of the stem member to the vertebral body at or near a pedicle, and an artificial facet joint structure carried by the stem member adapted and configured to replace a caudal portion of a natural facet joint.
-
24. A prosthesis to replace a caudal portion of a natural facet joint on a vertebral body comprising
a screw member including a fixation area to accommodate fixation of the screw member to the vertebral body at or near a pedicle, and an artificial facet joint structure carried by the screw member adapted and configured to replace a caudal portion of a natural facet joint.
Specification