An interbody spinal prosthetic implant is placed between adjacent vertebral bodies of the vertebrae of a spine to maintain a desired orientation and spacing between the adjacent vertebral bodies and support the adjacent vertebral bodies for fusion at the desired orientation and spacing, the ...http://www.google.ca/patents/US5766252?utm_source=gb-gplus-sharePatent US5766252 - Interbody spinal prosthetic implant and method
