Statewide Menu

Freedom® Primary Knee System

98.3% implant survivorship rate at 10 years1

The Freedom Primary Knee System is the advanced all-in-one total knee arthroplasty solution that gives patients optimal high-flexion motion—up to 155 degrees.

The Freedom Primary Knee, featuring a universal baseplate, is designed to mimic natural knee function and is available in a range of sizes for both all-poly and metal-backed tibial components. It ensures predictably successful and repeatable patient outcomes after primary total knee replacements.

A 10 year study shows patients who underwent total knee arthroplasty with Freedom Total Knee experienced optimum TKA performance without loss due to component failure, deterioration of the prosthetic composite, related complications, loss to follow-up.

Contact Us
Overview

Advanced, Innovative Design Follows Anatomical Knee Function

 

The Freedom femoral components have been designed to permit flexion of 155°. While reaching higher degrees of flexion is dependent upon patient anatomy, an increasing patient population is requiring this capability. Innovative computer-aided modeling and our years of clinical experience deliver exceptional mobility freedom after orthopedic surgery.

The Freedom Primary Knee System features:

  • 7 radii of curvature manage patellofemoral contact and control femoral rollback and flexion, eliminating the mid-flexion dead spot.
  • Deep anterior patellar cut-out allows for tendon clearance during deep flexion.
  • 5 points of peripheral locking ensure security and reduce potential micro-motion.
  • Six-degree angle of patellar groove assures smooth patellar tracking.
  • Thin anterior flange, minimal posterior condylar resection, and low profile box aid in bone conservation.

Figure of knee implant with 7 radii

Multi-Radii Design: Form Follows Function

 

A graphic demonstrating the femoral rollback.

The articular surface of the Freedom femoral components were designed to mimic anatomical knee function.

As flexion increases, the radius of the curvature in the sagittal plane must change to accommodate more or less rollback over the available surface.

Tibial Baseplate Supports a High Flexion Lifestyle

 

Naturally, patients want to comfortably continue or resume their high flex activities after TKA. The Freedom Primary Knee System’s innovative tibial baseplate and associated locking mechanism is key in making that happen because it was designed with high flex as the standard, and not as an afterthought.

Features of the tibial baseplate include:

  • Optimized tibio-femoral conformity in extension while allowing rotational laxity in flexion and minimizing polyethylene contact stresses.
  • Low profile optimized keel in all sizes (30 mm total height).
  • Advanced locking mechanism providing peripheral locks at five places (anterior, posteromedial, posterolateral, lateral and medial).
  • Design that prevents micro-motion of the insert in the tibial baseplate, enhancing joint stability.

Freedom Primary Knee baseplate front view

Tibial Insert Technology

 

Four tibial inserts

Features of the tibial insert include:

  • An all-poly tibial component specifically designed for high flexion and cleared by the US FDA.
  • Ultra High Molecular Weight Polyethylene (UHMWPE) tibial inserts are available in CR, PS and UC (ultra congruent) options.
  • Designed using advanced computer modeling technology to reproduce natural knee kinematics while accommodating anatomic femoral rollback and internal rotation.
  • Features a deep anterior patellar cut-out to allow for tendon clearance during deep flexion.
  • All-poly tibial component offers an excellent alternative to metal-backed tibial design.
  • Ultra-congruent component design features prominent anterior and posterior lips that aids in prevention of anterior subluxation and in resisting posterior translation of femur.

Customizable, Convenient Options for Successful Orthopedic Surgery

 

The Freedom Primary Knee System offers you an extensive range of components you need to perform an efficient and successful total knee arthroplasty for every patient. Engineered from state-of-the-art materials, left and right tibial components alike come in eight sizes, meaning you have the freedom to fit orthopedic implants to any patient’s knee.

  • Multiple size options feature dynamically proportioned M/L and A/P femoral components in CR and PS options.
  • Insert options include posterior stabilized (PS), cruciate retaining (CR), ultracongruent (UC), and an all-poly patella component specifically designed for high flexion and cleared by the U.S. FDA.
  • Universal, cobalt chromium alloy baseplate accommodates left and right sides as well as CR, PS, and UC.
  • Quick Tray™ (our single tray instrument system) is customized to your orthopedic surgery instrument preferences.
  • Patient-matched, just-in-time inventory eliminates your need to store the orthopedic implant on-site—everything you need for one case comes in one tote.

Optimal, Long-Lasting Results for Your Patients

 

The Freedom Primary Knee System provides unique component options that deliver successful, predictable and reproducible results for both your patients and your practice.

Interested in reducing the risk of metal sensitivities and allergies in patients undergoing
total knee arthroplasty? Explore our Freedom® Titan™ Knee.

X-ray shows Freedom® Primary Knee System allowing full flexion after total knee arthroplasty.

Videos
 
Freedom Primary Knee Surgery Video
Documents
Freedom® Knee Solutions Overview
Freedom® Primary Knee 10-Year Study
References
  1. Durbhakula S, Rego L, Eberle R: Restoration of Femoral Condylar Anatomy for Achieving Optimum Functional Expectations: Continuation of Earlier Studies at 10-Years follow-up. Recon Review [Accepted for Publication], 2023.

Get the App, Master the O.R.

Access a rich library of instructive videos, detailed manuals, and impactful case studies made for surgeons! Explore system overviews for the Freedom Knee and Libertas Hip.

Download the App Today!

Download
the App Today!

 

© 2025 Maxx Orthopedics, Inc. All rights reserved.