HRSK Hinged Rotating Total Knee System

Tibial/femoral Coronal Congruency

By maximizing contact area, the stresses in the
polyethylene are distributed across a larger surface
area

Modular Hinge Mechanism

The modularity of HRSK allows the components to
be assembled with minimal distraction. Hinge post
extension can be inserted into the tibial baseplate
and tightened easily

Symmetry Hinge Mechanism

The HRSK femoral component and articular surface are designed to maintain centralized contact throughout ROM (-3°to 120°), resulting in 95% of the load being carried by the tibial condyles; The central location of the HRSK Knee hinge mechanism is placed closer to the axis of the tibial
component, resulting in more natural and consistent tibiofemoral kinematics when compared to posterior hinge knee designs

Rotating Design

The rotation of the HRSK platform is designed to displace torsional loads from the cement interfaces to
the soft tissues, since it allows up to 20°of movement in internal and external rotation

Hyperextension Stop

Contact occurs on the frontal radius of the HRSK Femoral Component with the articulating surface just
as the implant moves to hyperextension. This will cause the knee to distract slightly, dampening the
extension impact

Length options

40/80/120/160mm for the
appropriate level of fixation

Diameter Options

Diameters 10-20mm are
available for press-fit

Offset options

Are available in neutral, 2.5, 5.0mm magnitudes to
accommodate the varying metaphyseal/diaphyseal
mismatch with the proximal tibia/distal femur

Integrated Design

Avoids the risk of postoperative loosening
between adaptor and stem The existence of the slot at the end of stem could
reduce substantially the stem-end pain