The Next Chapter in Robotics is Here

VELYS™ Robotic-Assisted Solution 

The VELYS™ Robotic-Assisted Solution Base Station and Satellite Station


Merging Insights, Execution, and Performance 

The VELYS™ Robotic‐Assisted Solution provides valuable insights, versatile execution, and verified performance* designed to deliver efficiency and optimize patient outcomes.1-3 

*Maintaining cut plane position as the bone is resected and eliminating system interruption are key to helping maintain accuracy of the cut without the use of cut blocks. The VELYS™ Robotic-Assisted Solution tracks bone position at a high frequency while repositioning the saw at the resection plane. 

Versatile Execution


Versatile Execution 

VELYS™ Robotic‐Assisted Solution is designed to provide an instinctive, integrated design to optimize daily OR flow.1


Proprietary technology that maintains the saw cut plane to help execute precise, reproducible surgeon‐controlled cuts without the need for a cutting block.1 

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™ Instrumentation and an easily maneuverable robotic‐assisted design help to streamline OR integration and improve daily OR flow.

Valuable Insights


Valuable Insights 

Gap balance data to help surgeons visualize 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 personalize 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 visualize and predict joint stability.

Verified Performance 


Verified Performance 

The VELYS Robotic‐Assisted Solution is designed to support ATTUNE™ Knee placement with accurate, consistent plan execution.2 


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 been shown to improve patient‐reported outcomes by working in harmony with the patient’s anatomy to deliver both stability and motion.4-7 

VELYS Digital Surgery Virtual Platform


The Virtual Experience is Live 

Discover VELYS™ Digital Surgery and the ATTUNE™ Knee in our interactive, immersive virtual experience. Here, you can move around our digital exploration space and get up-close and personal with our most cutting-edge innovations in robotics and implants.  

On-Demand Learning

Video 1 of 3

Learn more about how the VELYS™ Robotic-Assisted Solution is reinventing and streamlining OR workflow.  

Featured On-Demand Content

Clinical Studies and Evidence 

VELYS™ Robotic-Assisted Solution in an operating room

VELYS™ Robotic-Assisted Solution versus Mako® A Comparison of System Compactness 

VELYS™ Robotic-Assisted Solution

User Experience Evaluation of the VELYS™ Robotic-Assisted Solution for Total Knee 

Related Links 

DePuy Synthes Knee Solutions 

See our full portfolio of products for total knee arthroplasty (TKA).  

ATTUNE™ Knee Evidence 

Get evidence about the ATTUNE Knee System 

ATTUNE™ Knee System 

Learn more about how the ATTUNE™ Knee System works for patients 

Knee Replacement 

Get the facts about knee replacement using ATTUNE™ Knee and our other DePuy Synthes knee solutions 

DePuy Synthes 

Learn how we’re working to deliver innovative solutions for today’s healthcare challenges 


  1. DePuy Synthes User experience evaluation of the VELYS Robotic-Assisted Solution for total knee. July 2020. Windchill Report #103744839. 

  1. Doan, G.W., et al., Image-Free Robotic-Assisted Total Knee Arthroplasty Improves Implant Alignment Accuracy: A Cadaveric Study. J Arthroplasty, 2022. 37(4): p. 795-801.         

  1. Clatworthy, M., Patient-Specific TKA with the VELYS Robotic-Assisted Solution. Surg Technol Int, 2022. 40 

  1. 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. 

  1. Fisher D, Parkin D. Optimizing 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. 

  1. 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. 
    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. 

Please refer to the instructions for use for a complete list of indications, contraindications, warnings and precautions.