Patent ID: 9028552
Filing Date: 2015-05-12
Classification: A61B,A61F,Y10S

Abstract:
1. A method of axially rotating first and second vertebral bodies of a spinal column with respect to one another comprising the steps of: inserting first and second components of an articulating spinal disc replacement between said first and second vertebral bodies so that a first vertebral body contacting surface of said first component contacts said first vertebral body and a second vertebral body contacting surface of said second component contacts said second vertebral body, said first and second vertebral body contacting surfaces being spaced apart by a first distance, wherein said first and second components include a leading end, a trailing end, and first and second lateral sides; placing a first articulating surface of said first component in contact with a second articulating surface of said second component, said first articulating surface having a single continuous concave surface extending from said leading end to said trailing end of said first component and a single continuous convex surface extending from said first lateral side to said second lateral side of said first component, and said second articulating surface having a single continuous concave surface extending from said first lateral side to said second lateral side of said second component and a single continuous convex surface extending from said leading end to said trailing end of said second component, wherein said first and second articulating surfaces are saddle shaped; and axially rotating said first vertebral body with respect to said second vertebral body through at least a range of angles while not increasing said first distance between said first and second vertebral body contacting surfaces, at least in a direction extending along a longitudinal axis of the spinal canal.