Insert Fixation System
The locking mechanism of the Triathlon Knee System features a complete peripheral rim-locking mechanism between the tibial baseplate and insert. An Anti-Rotation Island is designed to reduce micromotion (A/P and M/L) and increase backside contact area, further enhancing the insert fixation system. These features, in conjunction with reduced articular stresses, work together to minimize the clinical challenges of micromotion that have been shown to lead to backside wear.1
References
1. Rao AR, Engh GA, Collier MB, Lounici S. Tibial interface wear in retrieved total knee components and correlations with modular insert motion. J Bone Joint Surg Am. 2002 Oct;84-A(10):1849-55.