Arthoplasty revision system and method

摘要

The present method includes the following steps: removing a portion of a previously implanted spinal arthroplasty device; and attaching a revision component to a remaining portion of the previously implanted spinal arthroplasty device to alter a biomechanical characteristic of the implanted arthroplasty device. Another aspect of the invention provides a method of limiting motion between adjacent vertebrae including the steps of accessing an implanted spinal arthroplasty device comprising a cephalad component fixed to a first vertebra and a caudal component fixed to a second vertebra inferior to the first vertebra, the cephalad and caudal components having a range of motion between them, and attaching a revision component to the cephalad and caudal components to reduce the range of motion. The invention also includes revision devices for revising the biomechanics of implanted spinal arthroplasty devices.

主权项

1. A system for implantation comprising:
a first caudal cup having a first bearing surface; a second caudal cup having a second bearing surface; a crossbar member extending between the first caudal cup and the second caudal cup, wherein the crossbar member has a first end that engages the first bearing surface of the first caudal cup and has a second end that engages the second bearing surface of the second caudal cup; and a securing device for limiting motion of the system, the securing device including a lower portion and an upper portion, wherein the lower portion is disposed in a position anterior relative to the first caudal cup and the lower portion is configured to receive the first caudal cup between a pair of prongs, and wherein the upper portion is configured to engage the first end of the crossbar member at a position opposing the first bearing surface of the first caudal cup.