INBONE 2 total ankle replacement system including prophecy specific alignment guides
Treatment of degenerative joint disease of the ankle has experienced a renaissance in the past decade as total ankle replacement has become a predictable alternative to ankle fusion for end-stage disease. There are several total ankle replacement systems on the market including the INBONE Total Ankle System. The INBONE I system was US Food and Drug Administration 510-k cleared for use in 2005 and consists of a saddle-shaped, fixed-bearing, two-component design with the polyethylene-bearing surface locked into the tibial baseplate. The INBONE II Total Ankle System is an evolution of the original INBONE Total Ankle System design. The INBONE II system retained several important design characteristics of the original INBONE Total Ankle System design, including the modular tibial stems, thicker polyethylene bearings, and intramedullary guidance, while adopting a sulcus talus articular configuration, extended length tibial base components, and optimizing for use with PROPHECY patient-specific instrumentation. In conclusion, the INBONE I and INBONE II Total Ankle Systems offer the advantages of a robust technique with advanced instrumentation when managing the arthritic ankle. Numerous advancements in prosthesis design and surgical techniques have greatly contributed to an evolving role for total ankle replacement as a motion-sparing option for the treatment of end-stage ankle arthritis. Patient-specific instrumentation and preoperative navigation technologies, well elucidated in total knee arthroplasty, have helped to optimize component positioning and in turn improve prosthesis durability and survivorship. PROPHECY preoperative navigation technology has been a positive and significant contribution to total ankle arthroplasty technique, and this chapter will also explore its evolving role in improving outcomes in total ankle replacement.
