Robotic Knee Replacement: Procedure, Benefits, Recovery
Quick Answer
Robotic knee replacement is a surgeon-led form of total knee replacement in which a robotic-assisted system supports pre-operative planning, real-time intraoperative guidance, and precise bone preparation. The surgeon performs and controls the entire operation; the technology acts as a planning and guidance tool. It may benefit patients with moderate to severe knee osteoarthritis who have not responded adequately to conservative treatment. MGM Healthcare Malar, Adyar, offers VELYS™ Robotic-Assisted Knee Surgery as part of its orthopaedic care. Suitability for the procedure is determined individually by an orthopaedic surgeon after clinical and imaging assessment.
What Is Robotic Knee Replacement?
Robotic knee replacement is a total knee replacement performed by an orthopaedic surgeon with the assistance of a robotic-assisted surgical system. The system does not perform the surgery – it supports the surgeon with anatomical data, planning, and real-time feedback during bone preparation and implant alignment. This is “robotic-assisted,” not “robot-performed,” surgery: the surgeon stays in control at every stage, from incision to implant placement.
Before surgery, the system helps build a plan based on the individual patient’s bone shape, joint alignment, and soft-tissue balance, rather than relying only on standard-sized instrumentation. This patient-specific planning aims to tailor implant positioning to each patient’s own knee anatomy.
How Does Robotic Knee Replacement Work?
Pre-Operative Planning
The process typically starts with an assessment of the patient’s knee anatomy. Depending on the platform used, this may involve imaging or intraoperative mapping of bone landmarks and alignment. Not every robotic system uses the same imaging approach – some use CT scans, while image-free platforms map the knee directly during surgery without a pre-operative CT scan. The workflow depends on the specific system in use.
Intraoperative Guidance
During surgery, the system can give the surgeon real-time information on alignment, ligament tension, and bone position, allowing adjustments to the plan as the procedure progresses.
Robotic-Assisted Bone Preparation
Using this real-time data, the system assists the surgeon in preparing bone surfaces according to the plan. The surgeon guides the instruments throughout; the system provides boundaries and feedback to support more consistent, planned bone cuts.
Who Is a Good Candidate for Robotic Knee Replacement?
People who may consider robotic knee replacement include those with:
- Moderate to severe knee osteoarthritis
- Persistent knee pain that limits daily activities
- Difficulty walking or climbing stairs
- Reduced knee mobility or stiffness
- Knee deformity, such as bowing or knock-knee alignment
- Symptoms that have not improved adequately with conservative treatments such as medication, physiotherapy, or injections
Robotic knee replacement is not automatically the right choice for every patient. Suitability depends on the specific knee condition, X-ray or imaging findings, overall health, bone quality, age and activity level, prior treatments, and the orthopaedic surgeon’s clinical assessment. This article is for general information only and does not diagnose any individual’s condition – an in-person evaluation by an orthopaedic specialist is needed.
What Are the Benefits of Robotic Knee Replacement?
Patient-specific surgical planning: Robotic-assisted platforms can help build an individualized plan based on a patient’s own knee anatomy rather than generic instrumentation sizes.
Improved alignment precision: Several studies suggest robotic assistance can improve the accuracy and consistency of implant positioning and limb alignment compared with conventional manual techniques.
Real-time surgical guidance: Robotic systems can give surgeons additional intraoperative information on bone position and soft-tissue balance to support decision-making.
Personalized implant positioning: Surgeons can use robotic-assisted data to plan implant placement according to each patient’s individual anatomy and alignment goals.
Recovery: Some studies have reported improved early recovery outcomes with robotic-assisted knee replacement, although recovery depends on multiple patient and surgical factors and varies significantly between individuals. Robotic assistance does not guarantee a faster or easier recovery for every patient.
What Does the Evidence Say About Robotic Knee Replacement?
Robotic-assisted total knee replacement can improve the precision of implant positioning and reduce alignment errors compared with conventional techniques. Multiple systematic reviews and meta-analyses of comparative studies and randomized trials have found that robotic-assisted procedures achieve better post-operative anatomical and mechanical alignment than manual techniques.
However, current evidence does not show that robotic surgery is automatically better for every patient. The same research generally reports that short- and medium-term clinical and functional outcomes – such as range of motion and validated knee function scores – as well as complication rates, tend to be comparable between robotic-assisted and conventional knee replacement. Differences in long-term pain, function, and implant survival remain less certain, since most available data come from retrospective series with limited long-term follow-up.
Better-supported claims, based on current research, include:
- More consistent surgical planning
- More precise implant positioning
- Improved alignment accuracy
- Additional intraoperative guidance during surgery
Claims that require more cautious wording, because evidence is still developing, include:
- Faster recovery
- Less post-operative pain
- Shorter hospital stay
- Better long-term function
- Longer implant survival
- Lower complication rates
The choice between robotic-assisted and conventional knee replacement should be based on the patient’s condition, knee anatomy, the surgeon’s assessment, and the technology available at the treating hospital.
Robotic Knee Replacement vs Traditional Knee Replacement
| Factor | Conventional Knee Replacement | Robotic-Assisted Knee Replacement |
| Surgical planning | Surgeon-guided planning using conventional methods | Technology-assisted, patient-specific planning |
| Bone preparation | Conventional instruments | Robotic-assisted guidance |
| Implant positioning | Surgeon-controlled | Additional robotic guidance |
| Alignment | Depends on surgical technique and anatomy | Studies suggest improved alignment precision in many cases |
| Recovery | Depends on patient and rehabilitation | May have similar or improved early recovery in some studies |
| Long-term outcomes | Well-established evidence | Long-term advantages continue to be studied |
Robotic assistance is not automatically better for every patient. Surgical outcomes depend on the surgeon’s expertise, patient factors, knee condition, and rehabilitation – conventional knee replacement remains a well-established and effective procedure for most patients.
What Happens During Robotic Knee Replacement Surgery?
- Anaesthesia – Spinal or general anaesthesia is given, as determined by the anaesthesia team.
- Surgical planning and system setup – The robotic system is set up and the patient-specific plan is confirmed or refined.
- Robotic-assisted bone preparation – The surgeon prepares bone surfaces using robotic-assisted guidance.
- Soft-tissue and ligament balancing- The surgeon assesses and balances surrounding tissue for stable knee movement.
- Implant placement – The implant components are positioned according to the surgical plan.
- Closure and initial recovery – The incision is closed and the patient is moved to recovery for monitoring.
How Long Does Recovery Take After Robotic Knee Replacement?
Recovery is a general guide, not a promise, and varies from person to person depending on age, overall health, pre-existing conditions, surgical factors, and adherence to rehabilitation.
- First 24–48 hours:Pain management and early mobilization, often with a physiotherapist, typically begin soon after surgery.
- First 2 weeks:Walking with support, wound care, and basic range-of-motion exercises.
- 4–6 weeks:Many patients progress to walking with reduced or no support, continuing structured physiotherapy.
- 3–6 months:Strength, flexibility, and daily function generally continue improving for most patients.
- Long-term recovery:Gains in mobility and strength can continue for months, depending on consistent rehabilitation and follow-up.
Not every patient will walk independently within a fixed timeframe, and robotic assistance does not guarantee a faster recovery than conventional surgery.
Is Robotic Knee Replacement Safe?
Robotic-assisted knee replacement is an established technology used in knee arthroplasty at many hospitals. The surgeon remains fully responsible for the procedure at every step, and robotic assistance does not eliminate the general risks associated with knee replacement surgery.
Potential complications, whether the surgery is robotic-assisted or conventional, can include:
- Infection
- Blood clots
- Joint stiffness
- Implant-related complications
- Need for revision surgery in some cases
Robotic-assisted technology is designed to support surgical planning and precision, but safety outcomes ultimately depend on several factors, including surgeon experience, patient health, hospital infrastructure, appropriate patient selection, post-operative care, and rehabilitation.
When Should You Consider Knee Replacement Surgery?
Knee replacement may be worth discussing with an orthopaedic specialist if you experience persistent knee pain, difficulty walking or climbing stairs, difficulty getting up from a chair, ongoing stiffness, visible deformity, or a reduced quality of life – especially if non-surgical treatments such as medication, physiotherapy, or injections haven’t helped enough. This information is general in nature; a proper evaluation by a specialist is needed before any treatment decision, and readers should avoid self-diagnosing.
Why Choose MGM Malar for Robotic Knee Replacement in Chennai?
MGM Healthcare Malar, Adyar, offers VELYS™ Robotic-Assisted Knee Surgery as part of its orthopaedic services, supported by:
- VELYS™ robotic-assisted technology for knee replacement
- Patient-specific surgical planning
- Robotic-assisted surgical guidance during the procedure
- An experienced orthopaedic team specializing in joint replacement and robotic surgery
- Comprehensive perioperative care involving multidisciplinary teams where needed
- Structured post-surgical rehabilitation support
MGM Malar’s orthopaedic team has experience managing complex cases, including robotic-assisted knee replacement in older patients with multiple co-existing health conditions, under multidisciplinary perioperative care. As with any surgical technology, outcomes depend on individual patient factors and clinical judgment, and no specific result can be guaranteed.
What Is the Difference Between Mako and VELYS Robotic Knee Replacement Systems?
Mako and VELYS are both robotic-assisted platforms used in knee replacement surgery, developed by different manufacturers, and can differ in imaging approach, planning software, and surgical workflow – for example, some systems rely on pre-operative CT imaging, while others use an image-free approach that maps the knee intraoperatively. In both cases, the surgeon remains in control; the robotic system is a planning and guidance tool, not an independent operator. MGM Malar offers VELYS™ Robotic-Assisted Knee Surgery.
How Much Does Robotic Knee Replacement Cost?
The cost of robotic knee replacement can vary depending on factors such as the hospital, the type of implant used, the complexity of the surgery, patient-specific requirements, length of hospital stay, and any additional investigations or treatment needed before or after surgery. A specific price cannot be quoted here, as this depends on individual case assessment. For a personalized cost estimate, please contact MGM Healthcare Malar, Adyar, directly.
Consult a Specialist
If persistent knee pain is affecting your mobility or daily activities, consult an experienced orthopaedic specialist to understand whether robotic-assisted knee replacement is appropriate for you. MGM Malar, Adyar, offers VELYS™ Robotic-Assisted Knee Surgery along with comprehensive orthopaedic care and rehabilitation support. You can consult the orthopaedic specialists at MGM Malar or book an appointment to discuss whether robotic-assisted or conventional knee replacement suits your condition.
Medically Reviewed By
Dr. Shriram Krishnamoorthy, Senior Consultant, Orthopaedics, Joint Replacement & Robotic Surgery,
MGM Malar, Adyar.
Frequently Asked Questions
Robotic-assisted surgery can improve surgical planning and alignment precision, but the best option depends on the patient’s knee condition and surgeon’s assessment.
Yes. Robotic-assisted knee replacement is an established technique, but it carries the general risks associated with knee replacement surgery.
Pain varies between patients and depends on the surgical technique, individual factors, and pain-management plan.
Many patients begin walking with support soon after surgery under physiotherapist guidance, depending on their recovery.
Recovery generally takes several weeks to months, with continued improvement possible for 6 months or longer.
The cost varies based on the implant, hospital stay, case complexity, and individual treatment needs.
Patients with persistent knee pain, osteoarthritis, reduced mobility, or symptoms not adequately improved with non-surgical treatment may be candidates.
Age alone does not determine suitability. Overall health, bone quality, knee condition, and other medical factors are considered.
Both are robotic-assisted systems, but their technology and surgical workflows differ. The appropriate system depends on the surgeon, hospital, and patient’s needs.
MGM Healthcare Malar, Adyar, Chennai, offers VELYS™ Robotic-Assisted Knee Surgery.
