Scorpio NRG Knee System

Unlike other modern knee replacement designs, the Scorpio NRG Knee has greater internal and external rotational freedom throughout the full range of motion.1

Overview

Overview

Mechanical testing illustrates that the Scorpio NRG fixed bearing design has comparable rotational allowance to competitive mobile bearing knee systems, without sacrificing contact.1 The core technology of the NRG knee carries forward several clinically tested concepts from the Scorpio Total Knee System.

The Scorpio NRG tibial insert’s articulating surface adapts a Spherical Arc to realize greater rotational freedom. By meshing a single M/L radius and a Spherical Arc, NRG allows for wider rotational freedom without restricting tibio-femoral contact area.

 
Deep Flexion Decision

Deep Flexion Decision

The NRG tibial insert provides a deep anterior cut out to help to reduce stress on the patellar tendon during higher flexion angles.

Sizing Flexibility for Patient Fit

Sizing Flexibility for Patient Fit

Scorpio NRG incorporates three additional femoral sizes along with two additional tibia sizes to allow for greater flexibility in matching a patient’s anatomy.

Reduced Anterior Knee Pain

Reduced Anterior Knee Pain

The Scorpio NRG Knee System conserves bone in three areas:

  1. Resection level – NRG’s distal and posterior resection is maintained at a low 8mm of bone.2,3
  2. No additional posterior cut – Unlike some competitive knee prostheses, NRG does not require additional bone resection on the posterior condyles. Even without the additional bone resection, NRG is able to maintain sufficient contact in deep flexion.2,3
  3. No patellar groove resection – In contrast to the traditional Scorpio component, NRG does not require additional patellar groove resection.
Single M/L Radius

Single M/L Radius

The clinically successful single M/L radius of the NRG design achieves full conformity at all flexion angles while allowing for increased rotation. The increased conformity of the NRG knee design results in decreased contact stresses during increasing rotation.4

Mechanical testing shows that the Scorpio NRG fixed-bearing design maintains low levels of constraint, up to ±20 degrees of rotation. The NRG knee accommodates rotations of the intact knee on the articulating surfaces for both PS and CR systems. Scorpio NRG PS helps accommodate these rotations on the post where potential wear and damage can occur.

Extra Resources

Extra Resources

  1. Kanekasu et al.“Fluoroscopic Analysis ofKnee Arthroplasty Kinematics During Deep Flexion Kneeling,”J Arthroplasty,Vol.19 No.8,998-1003,2004.
  2. FEA Data: Bushelow,RD 03057.
  3. Fishkin et al.“Maximizing Comformity Without Excessive Rotational Constraint in,”Annual Meeting of American Academy of Orthopedic Surgeons, Feb 1-4,Anaheim, California,1999.
  4. FEA Data: Heitmann,T-1199
Request More Information

Thank you for your interest

Thank you for interest in this product. Your details have been recorded and a representative will be contact with you shortly.

Request More Information

If you would like more information on the Scorpio NRG product range, please complete the fields below.

register
Related Products