Page 11 - KNEETA

Constant Radius

Designed to restore the sagittal curvature of the femur with
constant radii from 0° to 90°, which delivers constant contact

The single radius of curvature extends from 0° to 90° on the medial pivot
and lateral condyle. Additionally, the coronal radius is equal to the sagittal
radius. These features provide the “ball” in the “ball-in-socket” design and
create an extension geometry on the medial pivot condyle that is equal to the
pivot
feature prevents “paradoxical motion” (anterior translation of the femur

and prevents laxity throughout the range of motion.

Extension Relief

posterior slope while still ensuring full extension.
An “extension relief” is built into the transition of the single radius of the Medial pivot Condylar

medial pivot condyle to permit clearance with the anterior lip of each tibial “Extension Relief”
insert. This indentation allows for optimized stability and contact area and is
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3.6 °
Trochlear Groove

Optimizes patellar tracking. FIGURE 1

optimize the patella tracking. This trochlear groove has been designed
with the intent of minimizing strain in the lateral retinacular tissues and
decreasing the need for lateral retinacular releases. FIGURE 1
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FIGURE 2

The trochlear groove is deepened on the femoral implant which is

mechanism. FIGURE 2

Anatomic Trochlear KNEETA® Knee System Competition:
Groove Depth Anatomic Trochlear Heightened Trochlear
Groove Depth Restored Groove Depth

FIGURE 3

Additionally, the trochlear groove has been extended posteriorly, so

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compared to PS designs. FIGURE 3

KNEETA® Knee Competitive Knees

SUNTEK KNEETA R
Medical Devices
and Electronic Total Knee system
Products Trade Co. KNEETA® Medial-Pivot Knee System
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