Your knee replacement isn’t really about the knee. It’s about walking the dog, climbing stairs with ease, and getting back to the activities that keep you healthy and independent. Robotic-assisted systems like Mako and CORI help surgeons plan and place your new knee with remarkable precision, but the robot doesn’t operate on its own. Your surgeon leads every step. Here’s what the technology does, what your surgeon does, and how that partnership supports your return to an active life.
What “Robotic-Assisted” Really Means
Robotic-assisted does not mean the robot operates on its own. Your surgeon controls the procedure from the first incision to the final stitch. The technology adds precision to bone preparation by keeping the surgeon within a plan built around your anatomy. Think of a GPS: it provides detailed guidance, but the driver still chooses the route and holds the wheel. Both systems discussed here support robotic-assisted knee replacement for total and partial procedures.
Mako and CORI: How the Two Systems Differ
Mako SmartRobotics is generally built around a CT scan taken before surgery. That scan lets the surgeon create a three-dimensional model of the knee and plan implant position in advance. During the operation, a robotic arm helps keep bone cuts inside the boundaries the surgeon has set.
The CORI Surgical System takes a different route. It is a handheld system that maps the knee during surgery rather than relying on a CT scan, so some patients can skip that extra imaging step. Both aim at the same goal, accurate implant placement, and surgeons may favor one over the other depending on the patient and the procedure.
The Decisions No Robot Can Make
Surgical judgment begins long before the robot is switched on. Your surgeon decides whether you need surgery at all, whether a partial or total replacement fits, and which implant suits your bone quality and activity level. Those choices come from your exam, your history, and your X-rays, not from software.
Replacement is rarely the first step. Many people with knee arthritis begin with bracing,physical therapy, injections, or platelet-rich plasma. Surgery enters the conversation when those options stop working and pain limits daily life.
Planning Around Your Knee, Not an Average Knee
No two knees are identical. Alignment, bone shape, and ligament tension vary from person to person, and the goal is to restore a joint that moves naturally. The robotic system gathers detailed measurements and shows how the knee behaves as it bends and straightens. Your surgeon interprets that information, balances the soft tissues, and adjusts the plan when the knee in front of them differs from what the scan suggested.
For people with damage in only one part of the joint, a partial knee replacement can preserve healthy bone and ligaments. Robotic guidance helps place a smaller implant precisely, but deciding that a partial replacement is the right choice remains a human judgment.
Where Surgeon Experience Still Matters Most
Technology does not replace training. The surgeon still chooses the approach to the joint, handles the soft tissue, and responds when something unexpected appears. Techniques that protect the muscles around the knee, such as the quad-sparing approach depend on surgical skill.or depend on surgical skill. A robot can guide cuts, but it cannot improvise. That is why experience with the technology matters at least as much as the technology itself.
Recovery After Robotic Knee Replacement
Many patients now go home the same day after outpatient robotic knee replacement, depending on their health and their surgeon’s plan. Comfort after surgery also depends on a coordinated approach, including a non-opioid recovery protocol that uses multiple strategies to control pain. The robot does not do the rehabilitation for you. Consistent therapy and following your surgeon’s instructions remain some of the biggest influences on your result.
Questions to Ask Your Surgeon
- How often do you perform robotic knee replacements, and with which system?
- Why do you recommend a partial or total replacement for my knee?
- What happens if the plan needs to change during surgery?
- What recovery timeline should I expect, and what will therapy involve?
Frequently Asked Questions
Does a robot perform knee replacement surgery?
No. The surgeon performs the operation and controls every step. The robotic system assists with planning and keeps bone preparation within boundaries the surgeon sets.
What is the difference between Mako and CORI knee replacement?
Mako is generally planned from a pre-operative CT scan and uses a robotic arm to guide the surgeon. CORI is a handheld system that maps the knee during surgery, without a CT scan. Both support accurate implant placement.
Is robotic knee replacement better than traditional knee replacement?
It depends on the patient. Robotic tools can improve precision and planning, but a surgeon’s experience and judgment remain central. Ask your surgeon how the approach fits your knee.
How long is recovery after robotic knee replacement?
Recovery varies. Some patients go home the same day and begin therapy right away, then rebuild motion and strength over weeks to months. Your surgeon will outline a timeline for your situation.
Am I a candidate for robotic knee replacement?
Candidates usually have knee arthritis that limits daily activity despite non-surgical treatment. An exam and X-rays help determine whether robotic partial or total replacement makes sense for you.
Take the Next Step
If knee pain is holding you back, an evaluation can clarify whether surgery, a partial replacement, or non-surgical care fits your goals. You can request an appointment or read the first visit guide to prepare.
AUTHOR: Andrew R. Noble, MD is a board-certified orthopedic surgeon specializing in hip and knee replacement at Palm Beach Orthopedic Institute, serving Palm Beach Gardens, Jupiter, and the surrounding Palm Beach County communities. He focuses on the surgical treatment of knee and hip arthritis, utilizing advanced techniques and modern technology to improve precision, minimize discomfort, and support faster recovery. Dr. Noble is committed to personalizing each patient's care plan to ensure the most appropriate surgical approach and setting based on their individual condition and medical history.
Dr. Noble completed an advanced Clinical Fellowship in Total Joint Replacement through Harvard Medical School at Brigham and Women's Hospital in Boston, Massachusetts, where he refined his expertise in joint replacement surgery. He earned his Doctor of Medicine Magna Cum Laude from Thomas Jefferson University, Jefferson Medical College in Philadelphia, Pennsylvania, and completed his residency in Orthopaedic Surgery at Virginia Commonwealth University Health System, Medical College of Virginia Hospital in Richmond, Virginia. He is board-certified by the American Board of Orthopaedic Surgery.
Dr. Noble is an active member of the American Academy of Orthopaedic Surgeons (AAOS) and the American Association of Hip and Knee Surgeons (AAHKS). He has published peer-reviewed research in the Journal of Bone and Joint Surgery and has presented at the annual meeting of the American Academy of Orthopaedic Surgeons. He has also co-authored a book chapter on complications after total knee arthroplasty in Adult Reconstruction: Orthopaedic Surgery Essentials (Lippincott Williams & Wilkins).
Dr. Noble has been recognized multiple times as a Top Doctor in Orthopaedic Surgery by Palm Beach Illustrated magazine and Jupiter Magazine for 2020, 2021, 2022, 2023, 2025 and 2026 — a distinction awarded by peer nomination and verified through the Florida Department of Health.
Dr. Noble performs less invasive total knee replacement, robotic-assisted partial and total knee replacement using the Mako system, and direct anterior total hip replacement with the Hana table. He also offers outpatient joint replacement procedures at Palm Beach Surgical Suites and The Orthopedic Surgery Center of Loxahatchee Groves, allowing many patients to return home the same day as their surgery. His approach integrates the latest surgical innovations with an opioid-sparing post-operative pain management program to enhance recovery while prioritizing patient comfort and safety.
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice. For diagnosis and treatment recommendations, please consult with Dr. Noble or another qualified orthopedic specialist.
Content authored by Dr. Andrew R. Noble and verified against official sources.
