Patent ID: 6949123
Filing Date: 2005-09-27
Classification: A61B,A61F,Y10S

Abstract:
1. A prosthesis assembly to replace all or a portion of a caudal portion of a left natural facet joint and all or a portion of a caudal portion of a right natural facet joint on a vertebral body, the prosthesis assembly comprising: a left prosthesis body accommodating fixation to the vertebral body at or near a left pedicle and without support by a lamina, an artificial left facet joint structure carried by the left prosthesis body adapted and configured to replace all or a portion of a caudal portion of the left natural facet joint, a right prosthesis body accommodating fixation to the vertebral body at or near a right pedicle and without support by a lamina, and an artificial right facet joint structure carried by the right prosthesis body adapted and configured to replace all or a portion of a caudal portion of the right natural facet joint.