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Total Knee System

LEGION Total Knee System


The LEGION Total Knee System is a comprehensive system designed to allow surgeons to address straightforward primary to complex revision knee arthroplasty. By virtue of its unique implant design features, proprietary materials and intuitive instrumentation, LEGION empowers surgeons to manage diverse surgical challenges and provide personalized joint care with one system, one company.  

LEGION total knee replacement and revision options include: 

  • GENESIS II Total Knee Replacement
  • LEGION CR Cruciate Retaining Knee Replacement
  • LEGION PS Posterior Stabilized Knee Replacement
  • LEGION RK Revision Knee Replacement
  • LEGION HK Hinge Knee Replacement

Download the LEGION product brochure.

The LEGION family offers a variety of options for both primary and revision total knee replacements. LEGION implants are available with VERILAST Technology, the combination of OXINIUM Oxidized Zirconium and XLPE. Additionally, some of the LEGION prostheses are available for use with our VISIONAIRE patient matched cutting blocks for total knee replacement surgery.

Learn more about our Technologies

VERILAST Technology

VISIONAIRE Patient Matched

NAVIO Surgical System

Clinical Heritage

A Legacy of Clinical Success  

There are many factors that ultimately influence implant endurance. Smith & Nephew has been at the forefront of innovation in the area of endurance, as demonstrated through a legacy of success. The design of the LEGION Total Knee System was inspired by the GENESIS II Total Knee System, which has a longstanding record of clinical success. For many years and in more than 30 countries, the GENESIS II Total Knee System has achieved outstanding clinical outcomes. 1,2,3

  Richard S. Laskin
100 consecutive
Minimum 5 years
Mark A. Snyder
562 consecutive
5-8 years
Robert B. Bourne
843 consecutive
Mean 9.5 years (5-11)
ROM 118° mean 118.6° mean 117° mean
Lateral Release Rate 3% 2.5% 4%
Knee Score 93 93.4 n/a
Survivorship 98.2% 98.9% 98%

Wear Resistance

Smith & Nephew has a longstanding reputation for providing surgeons with technologies designed to maximize implant wear resistance. That reputation was built through market leading innovations such as our highly polished tibial baseplates, tibial locking mechanism and the award-winning OXINIUM Oxidized Zirconium. That history of innovation continues with VERILAST Technology. In lab testing, Smith & Nephew demonstrated that the composition of the mating component has a significant influence in the wear resistance of the entire bearing couple (see VERILAST chart 1 below).    

Clinical References
1. Laskin, Richard S., Davis, John, “Total Knee Prosthesis using the GENESIS II Prosthesis: a 5-year follow-up study of the first 100 consecutive patients.”, The Knee 12 2005, pp.163-167.

2. Snyder, Mark, “GENESIS II Total Knee Arthroplasty: 5 to 8 year results”, Smith & Nephew, Inc, 2006

3. Bourne, Robert B., McCalden, Richard W, MacDonald, Steven J, Mokete, Lipalo, Guerin, Jeff, “Influence of Patient Factors on TKA Outcomes at 5 to 11 Years Followup.”, Clinical Orthopaedics & Related Research, November 2007, 464:27-31

4. 2005 Engineering Materials Achievement Award, American Society for Metals, 2005.

VERILAST Clinical Reference

VERILAST Wear Rate Chart


Move seamlessly from Primary Arthroplasty to Revision and beyond

The LEGION Total Knee System empowers you to address diverse surgical challenges with one A-P Resection, one system and one company such as:

  • Rheumatoid arthritis
  • Post-traumatic arthritis
  • Osteoarthritis
  • Failed osteotomies
  • Unicompartmental replacement or total knee replacement
  • Patients in primary and revision surgery, where the anterior and posterior cruciate ligaments are incompetent and the collateral ligaments remain intact.
  • Patients in primary and revision surgery, where the posterior cruciate ligament and one or both of the collateral ligaments (i.e. medial collateral and/or lateral collateral ligament) are absent or incompetent.

Femoral Components - Cruciate Retaining

 Tightly-radiused posterior condyles | Allow for deeper flexion

Femoral Components - Posterior Stabilized

 Bone Conserving

 All LEGION Femoral Components share the following features:

  • OXINIUM material and CoCr options
  • Anatomic design
  • Lateralized trochlear groove
  • Common A-P Resection


Having access to a breadth of capabilities with ease. The ability to do more of what matters. That is the essence of this system.

Today's knee implant patients present increasingly diverse scenarios. As a surgeon, you are only certain of your patient's true clinical condition when surgery is underway and all the factors are visible. You have to make decisions fast and you want to get it right the first time. Customize Endurance

Personalize with Versatility

Optimize procedures with ease

That is "Power of Simplicity"

Versatile, Simple instrumentation

The LEGION  Total Knee System includes versatile, simple instrumentation, comprehensive in function and fewer in number. As a result, you are able to achieve excellent alignment and effectively restore joint line position, giving your patients joint care. 1

Offers a broader range of instrumentation options:

  • Anterior Cut First and Distal Cut First Femoral Instrumentation
  • One A-P Resection
  • Extra and Intramedullary Tibial Instrumentation
  • Familiar approach and soft-tissue friendly instrumentation for MIS surgery
  • Easy, one-step conversion from Cruciate Retaining to Posterior Stabilized


LEGION Instrumentation   LEGION Instrumentation

Clinical References

1. Nadaud, M, Snyder, M, Brown, D, McPherron, A, “New Trends and Early Clinical Outcomes With a Modern Knee Revision System”, Innovations in the treatment of the arthritic knee - ORTHO supplement, Aug. 2007, pp. 97-101.


The LEGION Revision Knee System has been designed to offer the orthopaedic surgeon improved options to deal with the complexities associated with revision knee arthroplasty, while providing them in a manner that is relatively simple to execute. The instrumentation has been developed to be an easy-to-use system that will allow the surgeon to obtain accurate and reproducible results while improving the ease with which a surgeon can manage bone mass, restore limb alignment and improve knee function. 

Key elements in revision knee arthroplasty include:

  • restoration of proper limb alignment
  • achievement of proper prosthetic component position
  • restoration of knee biomechanics
  • balanced medial/lateral and flexion/extension gaps.

The achievement of these goals will lead to proper patellofemoral mechanics, functional range of motion and optimized patient satisfaction.  


The Revision Knee System Components are indicated for rheumatoid arthritis; post- traumatic arthritis; osteoarthritis; degenerative arthritis; and failed osteotomies, unicompartmental replacement; or total knee arthroplasties. The components are designed for use in primary and revision surgery, where the posterior cruciate ligament and one or both of the collateral ligaments ii.e. medial collateral and/or lateral collateral ligament) are absent or incompetent. The Revision Knee Components are for single use only and are intended for implantation with bone cement. These indications are the same as currently used for the Genesis II Constrained Knee System and Revision Knee System cleared via K962137 and K041106.


2/25/2016 ASD-Knee Implants-05686