The VELYS™ Robotic-Assisted Solution is an advanced technology used by orthopaedic surgeons to support highly accurate and personalised knee replacement surgery. It is an image-free system, meaning you do not need pre-operative CT or MRI scans. Instead, it uses real-time data, optical trackers and an infrared camera to build a 3D model of your knee during surgery, helping your surgeon make precise decisions throughout the procedure.
VELYS™ works seamlessly with the ATTUNE™ Knee System, an innovative implant designed to improve stability, reduce pain and create a more natural-feeling knee. The ATTUNE™ system has been shown to help patients feel more confident in their knee performance, experience less pain at the front of the knee and return to everyday activities sooner.
At Ramsay Health Care, our experienced orthopaedic consultants use robotic-assisted technology, including the VELYS™ system, to support a smoother recovery and help patients return to daily life with greater confidence.
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Knee replacement: Key trends and outcomes
Knee replacement surgery is advancing quickly, with robotic-assisted techniques becoming a major part of modern care. Current global evidence shows:
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Over 3.6 million knee replacements were performed worldwide in 2023.
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Robotic-assisted surgery has grown sixfold in six years and now makes up 13.4% of all knee replacements.
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Many patients experience a significant reduction in pain and improved day-to-day mobility after surgery.
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Knee replacements are highly durable, with 93% lasting at least 15 years and 82% still functioning at 25 years (this may be influenced by factors such as patient age, mobility, anatomy and degree of arthritis).
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Recovery continues to improve and many patients walk unaided within six weeks and return to low-impact activities such as swimming or cycling by seven weeks.
These trends show a clear shift toward more precise, personalised surgery and consistently improving long-term outcomes for patients.
How VELYS™ Robotic-Assisted Solution for knee replacement works
The VELYS™ system uses an infrared camera and optical trackers to gather real-time information about your knee during your surgery. This helps your surgeon plan and perform your knee replacement with a high degree of accuracy.
The VELYS™ robotic system
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does not operate on its own, your surgeon remains in full control (and makes decisions based on your knee and the information gathered).
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provides detailed data about your knee’s anatomy to support precise bone preparation.
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helps your surgeon position your ATTUNE™ Knee System implant accurately, based on your individual movement and alignment.
This personalised approach supports a more natural-feeling knee and improved recovery.
Benefits of VELYS™ robotic-assisted knee replacement with ATTUNE™ Knee System
The VELYS™ Robotic-Assisted Solution supports a more accurate and personalised knee replacement by using real-time data to guide implant positioning. When combined with the ATTUNE™ Knee System, this approach is designed to improve stability, reduce pain and help the knee feel more natural during movement.
Patient’s experience
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Improved knee stability and reduced discomfort as a result of more precise alignment and implant placement
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Greater confidence in knee performance
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Many patients report an earlier recovery and return to normal daily activities
What the evidence shows
Two global studies1,2 comparing the ATTUNE™ Knee System with another leading system found:
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Greater confidence in knee performance
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Less pain at the front of the knee
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Improved ability to perform daily activities
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Better overall quality of life
Patients often walk unaided within six weeks and return to low-impact exercise, such as swimming or cycling, by around seven weeks.
Patient satisfaction with ATTUNE™ Knee
Real-world National Joint Registry data shows:
These results are significantly higher than the overall class of knee implants.
Success with VELYS™
Success with VELYS™ robotic-assisted knee replacement is measured by accuracy, stability and patient-reported outcomes. When paired with the ATTUNE™ Knee System, patients consistently report:
Together, VELYS™ precision and ATTUNE™ implant design support reliable long-term results and high patient satisfaction.
VELYS™ Robotic-Assisted Knee Replacement at Ramsay Health Care UK
Choosing VELYS™ robotic-assisted knee replacement at Ramsay Health Care means being cared for by experienced orthopaedic surgeons who are specially trained in robotic-assisted techniques.
Our patients have access to the latest innovations in knee surgery, including the VELYS™ Robotic-Assisted Solution and the ATTUNE™ Knee System implant, to support highly accurate implant positioning and a personalised surgical experience tailored to your unique knee anatomy.
Your treatment plan is tailored to your individual needs, supported by fast access to diagnostics and surgery across our national network of hospitals.
Recovery is guided by comprehensive physiotherapy and rehabilitation services designed to help you regain confidence and mobility, getting you back to everyday activities sooner.
Ramsay also offers flexible pathways for both self-pay and insured patients, making it easier to access the care you need without delay.
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References
1 Hamilton WG, Brenkel IJ, Barnett SL, et al. Comparison of Existing and New Total Knee Arthroplasty Implant Systems From the Same Manufacturer: A Prospective, Multicenter Study. J Am Acad Orthop Surg Glob Res Rev. 2021;5(12)
2 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. Arthroplast Today. 2016;2(4):193-198. Published 2016 Aug 21. doi:10.1016/j.artd.2016.05.002
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