Your New Knee-Precision-Planned A Step-by-Step Guide to Robotic-Assisted Surgery with ROSA
Your New Knee, Precision-Planned: A Step-by-Step Guide to Robotic-Assisted Surgery with ROSA
From the moment you decide on surgery to your first pain-free walk, see how this technology is changing the knee replacement.
Reviewed by doctors of Asia Medical Specialists
Last Updated: 2025, November 7th
Introduction: It’s Not Just Surgery, It’s a Personalised Plan
If you’re considering knee replacement, you’ve likely experienced the painful reality of limited mobility. You might be wondering about the process itself. The idea of surgery can be daunting, but what if you knew your procedure was guided by a 3D digital plan created just for your unique anatomy?
ROSA (Robotic Surgical Assistant) isn't a robot performing surgery. Think of it as a high-tech co-pilot for your surgeon—providing real-time data and precision tools to execute a personalised plan. This article guides you through the entire journey, from the operating room (OR) to your recovery at home, illustrating how this technology supports better outcomes.
Part 1: Before the Op – Your Personalised Blueprint
The key to ROSA’s precision happens before a single incision is made.
- 3D Modelling: Instead of relying solely on standard X-rays, your surgical team uses advanced imaging to create a detailed 3D model of your unique knee—your bones, cartilage, ligaments, and all.
- The Surgical Plan: Your surgeon uses this 3D model to pre-plan the entire procedure on a computer. They can determine the ideal size, placement, and alignment of your new knee implant specific to your body. It’s like an architect creating a custom blueprint before building a house.
What this means for you: This pre-planning leads to a less invasive surgery. Your surgeon knows exactly what to do, which means less cutting and disruption to the healthy tissues and ligaments surrounding your knee.
Part 2: In the Operating Room – Precision in Real-Time
On surgery day, the ROSA system brings your personalised blueprint to life.
- Setting Up: The system is positioned to assist your surgeon. It’s essential to understand that your surgeon is in complete control at all times. ROSA does not act on its own; it provides information and guidance.
- Real-Time Feedback: As your surgeon prepares the bone for the implant, ROSA’s cameras and sensors track movement and provide real-time data on the screen. It helps your surgeon stay within the precise boundaries of the pre-operative plan.
- Balancing the Knee: One of the most crucial steps is ensuring your new knee has the correct "balance" and stability—meaning it feels natural and moves correctly. ROSA provides quantitative data on the soft tissue tension, helping your surgeon make fine adjustments so your knee isn’t too tight or too loose.
The Patient's Benefit: This enhanced precision is designed to place the implant in the optimal position for longevity and function. The goal is a knee that not only feels great but also lasts for years to come.
Part 3: After Surgery – Your Smoother Recovery
The benefits of a precise, tissue-sparing surgery become most apparent after your operation.
- Less Pain: By helping to preserve healthy bone and soft tissue, the procedure itself can be less traumatic. Many patients experience less post-operative pain and require less pain medication.
- Quicker Mobility: The goal of any knee replacement is to get you back on your feet. Patients often find they can stand and walk sooner—sometimes the very same day of surgery. This early movement is critical for a successful recovery.
- A Natural Feel: Because the implant was positioned and balanced specifically for your body, your new knee is more likely to feel stable and natural from the moment you start using it. This can boost your confidence during physical therapy and daily activities.
- The Road to Reclaiming Your Life: While recovery still requires dedication and physical therapy, the precision of the ROSA system is designed to set you up for a smoother, more predictable rehabilitation journey. You can focus on hitting milestones—like walking without a limp, climbing stairs, or returning to your favourite activities—rather than battling discomfort from a poorly aligned implant.
Conclusion: Technology Empowering Human Expertise
The ROSA Knee System represents a significant advancement in orthopaedic care, but it doesn’t replace the skill of your surgeon. Instead, it empowers them with unparalleled data and precision tools.
Your journey back to an active, pain-free life is a partnership. It’s a partnership between you and your surgeon, and now, technology like ROSA can be a valuable part of that team, helping to ensure your outcome is the best it can possibly be.
Ready to Take the Next Step?
If your knee pain is holding you back, the most important step is to have a conversation with an orthopaedic specialist. Ask them about all your treatment options, including robotic-assisted surgery, and whether a personalised approach with ROSA is right for you.
Disclaimer
This article is for informational purposes only and is not a substitute for professional medical advice. Consult with a qualified healthcare provider to discuss any medical concerns or before making any treatment decisions.
References
The following list includes clinical studies, reviews, and authoritative sources that provide evidence and context for the claims made about robotic-assisted knee arthroplasty and the ROSA system specifically.
- Batailler, C., Fernandez, A., Swan, J., Servien, E., Haddad, F. S., Catani, F., & Lustig, S. (2021). MAKO CT-based robotic arm-assisted system is a reliable procedure for total knee arthroplasty: a systematic review. Knee Surgery, Sports Traumatology, Art.
- Chen AF, Kazarian GS, Jessop GW, Makhdom A. Robotic Technology in Orthopaedic Surgery. J Bone Joint Surg Am. 2018 Nov 21;100(22):1984-1992. doi: 10.2106/JBJS.17.01397. PMID: 30480604.
- Shatrov J, Parker D. Computer and robotic - assisted total knee arthroplasty: a review of outcomes. J Exp Orthop. 2020 Sep 24;7(1):70. doi: 10.1186/s40634-020-00278-y. PMID: 32974864; PMCID: PMC7516005.
- Zimmer Biomet. (2022). The ROSA® Knee System 2024 Clinical Evidence Summary:
- Marchand RC, Sodhi N, Anis HK, Ehiorobo J, Newman JM, Taylor K, Condrey C, Hepinstall MS, Mont MA. One-Year Patient Outcomes for Robotic-Arm-Assisted versus Manual Total Knee Arthroplasty. J Knee Surg. 2019 Nov;32(11):1063-1068. doi: 10.1055/s-0039-168397
- Khlopas, A., Chughai, M., Hampp, E. L., et al. (2020). Robotic-Arm Assisted Total Knee Arthroplasty Demonstrated Greater Accuracy and Precision to Plan Compared with Manual Techniques. Journal of Knee Surgery, 34(03), 239–250.
- Hampp EL, Chughtai M, Scholl LY, Sodhi N, Bhowmik-Stoker M, Jacofsky DJ, Mont MA. Robotic-Arm Assisted Total Knee Arthroplasty Demonstrated Greater Accuracy and Precision to Plan Compared with Manual Techniques. J Knee Surg. 2019 Mar;32(3):239-250. doi: 1
- Chareancholvanich, K., Pornrattanamaneewong, C., Udompanich, R. et al. A comparative study of early postoperative pain: robotic-assisted versus conventional total knee arthroplasty. International Orthopaedics (SICOT) 49, 1359–1364 (2025). https://doi.org/
