Cynthia Total Knee System

Indications:

• Painful and disabled knee joint resulting from osteoarthritis, rheumatoid arthritis, traumatic arthritis where one or more compartments are involved
• Correction of varus, valgus, or posttraumatic deformity
• Correction or revision of unsuccessful osteotomy, arthrodesis, or failure of previous joint replacement procedure

Features:

• A sloped femoral box profile conserves bone without compromising fit or component strength.
• Gradually reducing femoral radius provides a smooth transition throughout the gait cycle.
• The narrow anterior flange is designed to provide an optimal fit for each patient while minimizing overhang and the opportunity for soft tissue irritation.
• The trochlear angle varies by size to accommodate variable patient Q-angles.
• A funnel shape allows the patient’s soft tissues to drive the position of the patella in extension and provides a smooth transition into the center of the groove.
• Femoral lugs increase anti-rotational stability of femoral component.
• A special cam-spine provides a large contact area and stability in flexion, while reducing the stresses to the tibia spine.
• The patent central locking design provides the architecture for the system to optimize kinematics, while reducing backside micromotion to the lowest levels.
• Highly polished cobalt chrome tibial tray provides smooth surface to minimize polyethylene wear.
• The stem with 3°posterior slope, prevent impingment with cortex bone.
• Keel design provides anti-rotational stability.