DA2000

The key benefits offered by the Dual Articular include the increased varus/valgus support provided by an extended intercondylar post on the tibial bearing. A key limitation of highly constrained devices is that the function of the reconstructed knee becomes limited to hinge like movements as rotation is constrained. This can compromise the kinematic function of the knee as well as placing extremely high stresses on the intercondylar polyethylene post, leading to post failure and premature loosening.

The Dual Articular overcomes this potential limitation by employing a unique rotating tibial bearing which has a bi-helical articulation with the tibial tray. This allows dissipation of the torsional forces transmitted through the femur as it rotates, and mimics the natural screw home mechanism of the normal knee. As the bearing rotates, it ramps up the helical surfaces, generating a centralising force and tensioning the soft tissues, thus stabilising the knee.