The Klassic® Knee System is a modernized neutral design and offers seven sizes of femurs, six sizes of tibial inserts and baseplates, and four sizes of patellae to accommodate a variety of patient anatomy. The system requires only three trays of instruments.
The patented1 Klassic Femur has a unique double Q-angle and deepened trochlear groove that allows optimal patellar tracking along a 9° Q-angle on both left and right anatomy. The femur also features anatomically tapered posterior condyles, a thin anterior flange, a proportional AP/ML ratio, and a symmetric outside profile of the anterior flange to minimize potential lateral overhang.
The six sizes of Klassic Tibial Baseplate assemblies are designed to optimally cover the tibial plateau using a symmetric geometry. The sweptback keel offers 4° of posterior slope and scales per two sizes.
Both a deep-dished Ultra-PS® Insert and a standard CR/Congruent Insert are available. The Ultra-PS insert provides a high anterior jump height and increased conformity to provide stability through a range of flexion without a cam and post design. The posterior lip of both the CR/Congruent and the Ultra-PS Insert is relieved to minimize impingement.
The Klassic Domed Patella and Klassic Sombrero Patella, offered in four sizes, are geometrically forgiving and optimize patellofemoral contact area during tracking.
1 US Patents 9,289,305 and D755,971