Spinal implant and methods of manufacture thereof

A method of manufacturing an intervertebral disc prosthesis comprising:

• manufacturing a shaft with a disc disposed at one end;
• the disc having a larger diameter than a diameter of the shaft;
• where the disc is concentric to the shaft;
• contacting the disc with a plurality of rods;
• where an axis of each rod of the plurality of rods is parallel to a central axis of the shaft;
• contacting a platform with each rod of the plurality of rods;
• where an end of the rods that contacts the platform is opposed to an end that contacts the disc;
• the platform being in contact with a ring;
• the ring being disposed on an outer periphery of the platform;
• and
• contacting the ring to a plurality of rings through a plurality of ribs;
• where a pair of ribs of the plurality of ribs contacts a pair of rings;
• and where a successive pair of ribs is displaced by 90 degrees from another pair of ribs in a neighboring pair of rings.

A method of using an intervertebral disc prosthesis comprising:

• contacting a pair of opposing vertebra in a vertebral column with an intervertebral disc prosthesis that comprises:
• a first cantilever arm;
• the first cantilever arm comprising a shaft that is affixed to a disc;
• a second cantilever arm that comprises a plurality of rods that contact the disc;
• the plurality of rods being equidistant from a central axis of the shaft;
• and
• a third cantilever arm that comprises a platform to which are attached a plurality of rings;
• the rings being concentrically disposed about the shaft;
• the rings being in operative communication with each other;
• where the plurality of rods contacts the platform;
• and where the second cantilever arm has more degrees of freedom than the first cantilever arm, while the third cantilever arm has a number of degrees of freedom that are greater than or equal to the number of degrees of the second cantilever arm;
• where an uppermost ring of the plurality of rings contacts a vertebra and where one end of the shaft contacts an opposing vertebra.