Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1987-01-22
1988-05-10
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 16, 623 18, A61F 244
Patent
active
047432560
ABSTRACT:
A surgical prosthetic implant for the vertebral column in the form of a rigid, preferably inert metal, plug having a porous metal surface allowing ingrowth of bone cells for biologic fixation is provided to achieve vertebral interbody fusion for treating or preventing back pain in patients with ruptured or degenerated vertebral discs. The plug forms a strut spanning and maintaining the disc space between adjoining vertebrae and has opposite ends bottomed in channels that are cut into the opposing faces of the vertebrae or opposed faces bottomed on the end faces of adjoining vertebrae. Bone ingrowth into the porous surface of the plug achieves long term biological fixation with living bone. Local bone graft harvested from the channel cuts into the vertebrae to receive the plug supplements the fusion. The implant minimizes or eliminates the need for bone graft material obtained from a second surgical site or from a bone bank and simplifies the method of achieving the interbody fusion.
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patent: 3426364 (1969-02-01), Lumb
patent: 3855638 (1974-12-01), Pilliar
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PoroCoat-A Technical Review of Porous-Coated Implants for Biological Fixation-DePuy.
Article "Anterior Discectomy and Interbody Fusion for Lumbar Disc Herniation"-Inoue, M.D. et al Number 183, Mar. 1984.
Article-"Clinical Orthopaedics and Related Research Number 193, Mar. 1985.
Apley Richard J.
Cannon Alan W.
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