LEGION◊ Hinged Knee is an extension of the clinically successful LEGION Total Knee System.
LEGION HK Product Brochure
LEGION HK Surgical Technique
Size
- Multiple femoral, tibial, stem and augment sizes
- Uniform sizing of all components from LEGION primary to revision
- LEGION Primary, Revision and Hinge share the same bone conserving femoral resections
Form
Anatomic Design
- Anatomic asymmetric tibia allows the surgeon to customize the tibial component to each patient's anatomic requirements.
- Anatomic femoral trochlear groove is based on the clinically proven GENESIS◊ II and LEGION Primary and revision design.
- LEGION system continuum, from primary to revision to hinge, system components and augments are compatible.
Function
Kinematics
- An average of 96% condylar loading removes the stress from the hinge link which promotes lower wear on the hinge device. 1
- Kinematic Guided Motion providing a natural range of motion2 with medial pivot, lateral roll back, and screw home.3
References
1. Hubbard K,: Condylar Load Measurement of the LEGION◊ Hinge Knee System. Smith & Nephew Inc. Orthopaedic Research Report, OR-09-30, April 2009.
2. Johal, P, et. al. "Tibio-femoral movement in the living knee". J Biomech. 28(2): 269-76.2005
3. Dees R: Design and Optimization of a Guided Motion Hinged Knee System. Smith & Nephew Inc., Technical Report, OR-12-036, April, 2012.