06045579 is referenced by 542 patents and cites 166 patents.

Method and apparatus for promoting a spinal fusion between neighboring vertebrae. Apparatus may be located within the intervertebral disc space and preferably includes a pair of engaging plates for contacting the vertebrae. An alignment device may be used to alter the vertical distance between the engaging plates to customize the apparatus to fit a given patient. In one embodiment, the alignment device includes a pair of struts having a predetermined height and extending between the engaging plates from an anterior end to a posterior end of the apparatus. In another embodiment, the alignment device includes a rotatable connector and cam pins for adjusting the distance between the engaging plates. The alignment device is preferably adapted to vary the distance between the engaging plates such that the height of the apparatus proximate the anterior end is greater than that proximate the posterior end whereby the natural lordosis of the spine is maintained after the apparatus is installed. The apparatus may further include a load-sharing member to allow stress to be imparted to bone in the vicinity of the apparatus to promote bone growth in accordance with Wolff's law.

Title
Adjustable height fusion device
Application Number
8/847172
Publication Number
6045579
Application Date
May 1, 1997
Publication Date
April 4, 2000
Inventor
Richard D Guyer
Dallas
TX, US
Ralph F Rashbaum
Dallas
TX, US
Erik J Wagner
Allen
TX, US
Stephen H Hochshuler
Dallas
TX, US
Agent
Conley Rose & Tayon P C
Assignee
Spinal Concepts
TX, US
IPC
A61F 2/44
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