Uniglide
Unicompartmental Knee Replacement
Natural kinematics
The triple radius geometry of the femoral component allows for a more natural fit and preserves the facet centres. The external geometry of the femur, coupled with the geometry of the meniscal bearing, offers a compromise between congruency and preservation of the extension and flexion facet centres(1), providing the combination of a highly congruent, low constraint bearing that may provide for more natural kinematic function.
Bone conservation
The triple radius design of the femoral component also allows for less bone to be removed. This preserves the natural rotation centre in the knee, providing a more natural load vector.
Strength and stability
The combination of the dual peg and keel design is intended to provide improved stability of both the femoral and tibial components compared to other unicompartmental designs. The keel section also acts as a reinforcing rib to increase the strength of the femoral component.
Mobile bearing
Uniglide mobile bearing offers the mobility required to accommodate the rotation and translation of the femoral condyles, whilst minimising torque and shear forces to the tibia. Stability against the bearing dislocation is provided by the deep concave articulation surface of the meniscal bearing. The result is a system where the force required to cause dislocation of the bearing is significantly higher than in the case of other mobile bearing unicondylar knee systems(2).
Fixed bearing
The Uniglide fixed bearing tibia is an all-polyethylene component which is similar in design to the St Georg Sled. With the addition of a small number of trials and punches for tibial preparation, it can be implanted using standard instrumentation.
References:
1. Saxler G, Temmen D, Bontemps G: Medium-term results of the AMC-unicompartmental knee arthroplasty. Knee 11(5):349, 2004
2. In-house test reports, Corin Group PLC.
Important: Not all products are available or cleared for distribution in all international markets. For more details, please contact your local subsidiary or distributor by visiting the Corin worldwide section.
