Merging insights, execution, and performance to help simplify knee replacement surgery.

​VELYS™ Robotic-Assisted Solution simplifies knee replacement surgery by providing valuable insights, versatile execution, and verified performance to deliver efficiency for surgeons and optimise patient outcomes.1,2

Key Features

Valuable Insights

Valuable Insights

Gap balance data to help surgeons visualise and predict joint stability.​

Natural Joint Assessment
Pre-resection assessment of alignment and predicted gap balance to help surgeons plan for optimal ATTUNE® Knee Implant position.

Single-page planning to easily adjust parameters helping surgeons personalise alignment and balance relative to soft tissues.​

Soft tissue stability graph provides balancing data throughout the full range of motion prior to execution of bony cuts to help surgeons visualise and predict joint stability.​

Versatile Execution

Versatile Execution

Instinctive, integrated design to give surgeons the control they’re used to while optimising daily OR flow.1

Proprietary technology maintains the saw cut plane to help execute precise, reproducible surgeon-controlled cuts.2

Instinctive User Interface
Clear interface, streamlined clinical application, adaptable workflow and fast registration process aims to improve procedural efficiency.1

Integrated Operating Platform
ATTUNE® Knee INTUITION® Instruments and an easily maneuverable robotic design streamline OR integration and help improve daily OR flow.1

Verified Performance

Verified Performance

Accurate, consistent plan execution supporting the ATTUNE Knee in providing better patient outcomes.2-6

High-speed camera, triple-drive motion technology, and PURESIGHT™ Hydrophobic Optical Reflectors work together to adjust and control the resection plane for accurate, consistent execution to plan.2

Procedural Joint Verification
Post-resection assessment to help surgeons verify final gap balance and overall leg alignment for intra-operative confirmation of ATTUNE Knee Implant position.

Works exclusively with the ATTUNE Knee System, which has shown to improve patient reported outcomes by working in harmony with the patient’s anatomy to deliver both stability and motion.3-6

Related Links

Robotic-Assisted Solution​

VELYS™ Robotic-Assisted Solution​

Learn more about the valuable insights, versatile execution, and verified performance provided by the VELYS™ Robotic-Assisted Solution.

Patient Specific Alignment

VELYS™ Robotic-Assisted Solution + Patient Specific Alignment + ATTUNE® Knee System

Learn more about how the VELYS™ Robotic-Assisted Solution works with Patient Specific Alignment and the ATTUNE® Knee System.


VELYS™ Robotic-Assisted Solution — Professional Education

The next generation in education and training to accompany the next chapter in robotics.


VELYS™ Robotic-Assisted Solution — Supporting Patients

​Learn more about the range of resources to support patient education.


  1. User experience evaluation of the VELYS Robotic-Assisted Solution for total knee (July 2020). Internal Report 103744839.
  2. Doan G, Curtis P, Wyss J, Clary C. Resection Accuracy Improved during Robotic-Assisted Total Knee Arthroplasty (December 2020). Internal Report 103720852.
  3. Hamilton WG, Brenkel I, Clatworthy M, et al. Comparison of existing and new total knee arthroplasty implant systems from the same manufacturer: a prospective, multicenter study, 2019. Poster presented at: American Academy of Orthopaedic Surgeons 2019 Annual Meeting; March 12–16, 2019; Las Vegas, NV. Poster PO614.
  4. Fisher D, Parkin D. Optimising the value of your patients’ TKA: how to leverage data from patient reported outcomes, Becker’s Hospital Review webinar. October 3, 2019.  Accessed October 18, 2019. ATTUNEevidence.
  5. Ranawat CS, White PB, West S, Ranawat AS. Clinical and radiographic results of ATTUNE and PFC sigma knee designs at 2-year follow-up: a prospective matched-pair analysis. J Arthroplasty. 2017;32:431-436.
  6. Indelli PF, Pipino G, Johnson P, Graceffa A, Marcucci M. Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design. Arthroplasty Today. 2016;2:193-198.

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