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Orthopedic Services

Find out how the VELYS™ robotic solution works. 

VELYS™ Robotic-Assisted Solution

Understanding Your Knee Replacement with the VELYS™ Robotic-Assisted Solution  

A knee replacement is a procedure performed to fix the damaged parts of a knee with different types of implants1. Advanced technology like robotic-assisted devices can help your surgeon perform a precise knee replacement surgery personalized for your specific anatomy2

Every knee is different, as is every patient requiring a knee replacement procedure. The VELYS™ Robotic-Assisted Solution assists our surgeons in optimizing surgical outcomes. It does this by using intra-operative data that’s unique to you.  

Your surgeon utilizes the technology during your procedure to enhance the accuracy and precision of your knee replacement to help you start moving again2.  

How does the VELYS Robotic-Assisted Solution work?  

The VELYS Robotic-Assisted Solution uses various advanced technologies to ensure the surgeon has the information and tools they need to perform a highly accurate and precise knee replacement.  

This solution is designed to:  

  • Aids our surgeons by accessing state-of-the-art technology to provide insights for real-time decision-making  
  • Helps our surgeon remove the damaged bone with accuracy. This robotic-assisted device does not move or operate on its own 
  • Use an infrared camera and optical trackers to help our surgeons gather the necessary data about your anatomy to achieve a high level of precision  

The VELYS Robotic-Assisted Solution works exclusively with the ATTUNE® Knee System.  

The ATTUNE Knee System has been provided to over 1 million patients worldwide and is designed to deliver a greater range of motion and faster recovery so you can get back to living the life you want to live3,4,8.  

How is robotic-assisted technology different?  

Robotic-assisted knee replacement:   

  • Technology controlled by the surgeon2   
  • May experience less pain and a faster recovery4,8  
  • More consistent outcomes (inconsistencies can affect recovery)2  

Traditional knee replacement:  

  • Hand-held tool  
  • May experience a longer recovery time4,7,8
  • There may be more variability in the surgical processes and outcomes  

What are the benefits of using robotic-assisted technology?  

There are a number of potential benefits to using this technology for your knee replacement.*  

During your procedure, the technology will gather details and data related to your knee to help you find a favorable implant fit. Additionally, robotic-assisted technology may allow your surgeon to perform a knee replacement tailored to you while providing both precision and accuracy during your procedure2.  

  • Robotic-assisted technology may deliver*:  
  • A greater range of motion (how well you can bend and flex your knee after surgery)4   
  • Less pain compared to traditional methods4
  • Faster recovery times (reduced length of hospital stay, hospital readmissions, and health visits)4,7,8*  
  • Findings based on studies conducted across multiple robotic-assisted total knee replacement systems.  

Things to Discuss with Your Surgeon Before a VELYS Robotic-Assisted Solution Knee Replacement  

  • What type of knee replacement do you think is appropriate for my situation?   
  • What are the other knee replacement techniques and technologies available?  
  • How do they compare to the VELYS Robotic-Assisted Solution?  
  • Can knee replacement surgery help relieve my pain and stiffness?  
  • What are the benefits and risks of knee replacement surgery?  
  • How long will it take to recover and rehabilitate from knee replacement with the VELYS Robotic-Assisted Solution?  
  • And what is my role in recovery and rehabilitation?  
  • If I choose to undergo technology-assisted knee replacement surgery, will I be able to resume daily activities?  

Important Safety Information  

As with any medical treatment, individual results may vary. The performance of knee replacements depends on age, weight, activity level and other factors. There are potential risks, and recovery takes time. People with conditions3 limiting rehabilitation should not undergo this surgery. Only an orthopedic surgeon can determine if knee replacement surgery is an option for you.  


  1. Johns Hopkins Medicine. Knee replacement surgery procedure. Accessed April 27, 2021. https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/kneereplacement-surgery-procedure.
  2. Doan et al. Resection Accuracy Improved Using A Novel Concept For Robotic-Assisted Total Knee Arthroplasty; ORS 2021 Annual Meeting Paper No. 0333.
  3. ATTUNE® Knee System Unit Sales 2019. DePuy Orthopaedics, Inc.
  4. Agarwal N, To K, McDonnell S, Khan W. Clinical and radiological outcomes in robotic-assisted total knee arthroplasty: a systematic review and meta-analysis. J Arthroplasty. 2020;35(11):3393-3409.
  5. Etter K, Lerner J, Kalsekar I, de Moor C, Yoo A, Swank M. Comparative Analysis of Hospital Length of Stay and Discharge Status of Two Contemporary Primary Total Knee Systems. J Knee Surg. 2017. 1(212): 1-10. DOI https://doi.org/10.1055/s-0037-1604442. Premier PerspectiveTM Database analysis includes 38 hospitals, representing 1,178 primary, unilateral TKAs with the ATTUNE Knee and 5,707 primary, unilateral TKAs with TriathlonTM.
  6. Katz JN, Mahomed NN, Baron JA, et al. Association of hospital and surgeon procedure volume with patient-centered outcomes of total knee replacement in a population-based cohort of patients age 65 years and older. Arthritis Rheum. 2007;56(2):568-574.
  7. Cool CL, Jacofsky DJ, Seeger KA, Sodhi N, Mont MA. A 90-day episode-of-care cost analysis of robotic-arm assisted total knee arthroplasty. J Comp Eff Res. 2019;8(5):327-336.
  8. Mitchell J, Wang J, Bukowski B, Greiner J, Wolford B, Oyer M, Illgen R. Relative Clinical Outcomes Comparing Manual and Robotic-Assisted Total Knee Arthroplasty at Minimum 1-Year Follow-up. HSS Journal, The Musculoskeletal Journal of Hospital for Special Surgery. 2021; Vol. 17(3) 267-273.