CORR Insights®: RSA-tested TKA Implants on Average Have Lower Mean 10-year Revision Rates Than Non-RSA-tested Designs

摘要

New total joint implants are introduced into the market for a variety of reasons. These may be scientific (such as new innovations, different technologies, or specific design changes), economic (such as jobs, market share, or value), or clinical (such as failure rate, increased surgical options, or perceived performance). Thus, many implants with a proven long-term success rate may be replaced by newer, clinically unproven ones [3]. Indeed, once a new prosthesis is designed, manufactured, delivered, implanted, and studied over the long-term, years may pass and eventually the product may become obsolete, replaced by a “new and improved” implant. This process may involve preclinical trials and governmental approval before the prosthesis is actually introduced into the marketplace. Joint implant registries also collect and disseminate information, both good and bad. The common goal in all of these processes is to detect any early problems with a new prosthesis, such as early loosening.