Abstract
Numerous studies have demonstrated that deviation from the mechanical axis of more
than 3 degrees can lead to increased complications and decreased patient satisfaction.
The stimulus for navigation of total knee arthroplasty (TKA) was born out of the need
for more precise and reliable component alignment. Proponents believe that navigated
TKA has the theoretical benefits of improved implant survivorship, better functional
outcomes, and greater patient satisfaction. Several studies have shown that intraoperative
use of navigation results in superior component positioning when compared with conventional
TKA. However, because of concerns about higher institutional costs, intraoperative
difficulties, steep learning curves, and potential tracker pin complications, navigation
TKA has not gained wide popularity. Moreover, to fully evaluate the use of navigation
in TKA, we believe that larger prospective randomized studies are required to clearly
define outcomes, as well as economic implications.
Keywords
computer-assisted - total knee arthroplasty - navigation
