Unity Knee™

About

Unity Knee is a clinically proven1 total knee system with a strong correlation to patient satisfaction2. Soft tissues are balanced to drive knee kinematics using modern surgical principles either manually or with the Apollo™ Robotic-Assisted Surgical Platform. Unity Knee, developed by a global team of designer surgeons, incorporates implant and instrument designs focusing on MCL isometry and medial joint line preservation to restore the joint function.

An Advanced and Versatile Total Knee Replacement System

The Unity Knee system offers a comprehensive portfolio that meets the needs of surgeons, patients, and hospitals.

Key features include:

Extensive range of insert constraints, including the recently launched Medial Constrained (MC) tibial insert which is designed to help restore native knee kinematics by stabilizing the medial condyle while allowing lateral translation
Flexibility to add stems and augments to the PS femur and tibial baseplate for managing more challenging cases
Streamlined instrumentation for efficient inventory management

With Unity Knee, surgeons have advanced options to tailor their approach to primary knee replacement for optimal stability, alignment and long-term results for patients. This versatile system empowers healthcare professionals with innovative features to meet diverse surgical needs.

Robotic-Assisted Total Knee Arthroplasty

Unity Knee is available with ApolloKnee™ robotic-assisted technology, providing predictive gap balancing throughout the range of motion. Corin offers advanced femoral planning that optimizes gaps and implant position, which has been shown to improve intraoperative accuracy, reduce soft tissue releases and improve postoperative patient satisfaction at 12 months compared to conventional knee replacement3,4,5.

Stability by design

This total knee system focuses on two main principles:

Ligament isometry throughout range of motion by preserving the medial joint line with a single radius femoral design and medial referencing instrumentation.
High rotational freedom on the tibial inserts and optimised sizing to allow patient-specific kinematics.

Personalised alignment

Optimising implant positioning for each patient by using the Unity Knee EquiBalance™, which is designed to allow:

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

* To learn more about our robotic solutions please visit ApolloKnee

Versatile

Wide variety of implant constraint available from cruciate retaining and condylar stabilised to posterior stabilised. The built-in modularity of the Unity Knee PS femur and tibial tray allows direct compatibility with stems and augments to simplify your difficult primary knee.

Unity Knee instrumentation is available in standard or streamlined sets to suit your specific requirements.

Predictive Balance™

Unity Knee is available with ApolloKnee™ robotic-assisted technology, providing predictive gap balancing throughout range of motion. Advanced femoral planning optimises gaps and implant position which has been shown to improve intraoperative accuracy, reduce soft tissue releases and improve postoperative patient satisfaction at 12 months compared to conventional knee replacement^3,4,5.

References

Pourmoghaddam A, Dettmer M, Malanka S, Kreuzer S. Comparison of Functional Outcomes ofTotal Knee Arthroplasty Using Two Different Single Radius Implants. Reconstructive Review. 2016Mar, Vol 6 (1):43-48
Van Onsem S, The objective substrates of patient satisfaction after total knee arthroplasty, Ghent University, 2018
Koulalis D, O'Loughlin PF, Plaskos C, Kendoff D, Cross MB, Pearle AD. Sequential versus automated cutting guides in computer-assisted total knee arthroplasty. The Knee 18 (2011) 436–442
Peters CL, Jimenez C, Erickson J, Anderson MB, Pelt CE. Lessons learned from selective soft-tissue release for gap balancing in primary total knee arthroplasty: an analysis of 1216 consecutive total knee arthroplasties: AAOS exhibit selection. J Bone Joint Surg Am 2013;95(20):e152. doi:10.2106/JBJS.L.01686
Keggi JM, Lawrence JM, Randall AL, DeClaire JH, Shalhoub S, Plaskos C. Early Clinical Outcomes of a Novel Predictive Ligament Balancing Technique for Total Knee Arthroplasty. CAOS Int’l Conference 2019