Posterior total joint replacement

A surgical method for creating a desired lordosis or kyphosis between a first upper vertebrae and a second lower vertebrae, comprising:

• removing at least a portion of a natural intervertebral disc from between the upper and lower vertebrae to create a disc space;
• resecting at least a portion of a natural endplate and at least a portion of a natural pedicle of the lower vertebrae;
• inserting a lower portion of a first arthroplasty device at least partially into the disc space, the first arthroplasty device including a first surface that substantially matches at least a portion of the resected surface of the natural endplate and a second surface that substantially matches the resected surface of the natural pedicle;
• and
• attaching the first arthroplasty device to the lower vertebrae with a bone fastener.

A prosthetic system for implantation between upper and lower vertebrae, the system comprising:

• an upper joint component comprising an upper contact surface and an upper articulation surface;
• a lower joint component comprising a first lower contact surface for engaging a resected endplate surfaces of the lower vertebrae and a lower articulation surface configured to movably engage the upper articulation surface to form an articulating joint, wherein the articulating joint is adapted for implantation within a disc space between the upper and lower vertebrae, allowing the upper and lower vertebrae to move relative to one another;
• and
• a bridge component extending posteriorly from the lower joint component and from the disc space, the bridge component having a second lower contact surface configured for engaging a resected bone surface of a pedicle of the lower vertebrae, wherein the distal end of the bridge component comprises a connection component adapted to receive a fastener.