Precision implementation

Addressing instability through instrumentation

  • Medial referencing rotational guide
  • Restoring MCL isometry through joint-line preservation
  • Stability throughout the complete range of motion


Personalised alignment

Optimising implant position for each and every patient

  • Ligament balancing in flexion and extension
  • ‘Anatomic’ alignment principles
  • Minimising soft tissue releases in TKR

Proven design

Evolving the single radius to balance the knee

  • Single radius femoral design(1,2,3)
  • Anatomic lateralised patella track
  • Difficult primary stem extension option

Unity Knee implant

Unity CS 2 copy2

Continuous development 

The latest development for Unity Knee™: Condylar stabilised (CS) insert designed for:

  • Enhanced stability in patients without a functional PCL, while maintaining a soft-tissue friendly profile.
  • Minimal anterior translation without compromising knee range-of-motion.
  • complete system compatibility, functional with Unity CR femoral components and available in standard, 1mm thickness increments

The Unity CS tibial insert is not CE Marked.


  1. Wang H, Simpson KJ, Ferrara MS, Chamnongkich S, Kinsey T, Mahoney OM. Biomechanical Differences Exhibited During Sit-To-Stand Between Total Knee Arthroplasty Designs of Varying Radii. J Arthroplasty. 2006; 21 (8): 1193-1199.
  2. Hall J, Copp SN, Adelson WS, D'Lima DD, Colwell CW. Extensor Mechanism Function in Single-Radius Vs Multiradius Femoral Components for Total Knee Arthroplasty. J Arthroplasty 2008; 23 (2): 216-21.
  3. D'Lima DD, Poole C, Chadha H, Hermida JC, Mahar A, Colwell CW. Quadriceps Moment Arm and Quadriceps Forces After Total Knee Arthroplasty. CORR 2001; 392: 213-220.

Important: Not all products are available or cleared for distribution in all international markets. For more details please contact us.


Product Videos

  • CR Procedure

    Watch CR Procedure

  • Product Overview

    Watch Product Overview

  • Ligament Balancing

    Watch Ligament Balancing

  • Medial Referencing

    Watch Medial Referencing

  • Dr Raterman Unity CR

    Watch Dr Raterman Unity CR

  • Nicholas Day’s patient story

    Watch Nicholas Day’s patient story

  • Unity Knee CS

    Watch Unity Knee CS

Product Information

  • Technical Summary

    Technical Summary

  • Product Overview

    Product Overview

  • Your knee - A guide for patients

    Your knee - A guide for patients

  • Unity DPI 2page flyer

    Unity DPI 2page flyer