A thorough evaluation includes blood tests, imaging studies, and an assessment of overall health status. The surgeon reviews current medications, previous surgeries, and any existing health conditions that may affect surgery or recovery.
Robotic Knee Replacement
Dr Wang Lushun
Senior Consultant Orthopaedic Surgeon
MBBS (Singapore)
MRCS (Edin)
MMed (Ortho)
FRCS (Ortho) (Edin)
- Get active again with a well-executed ACL surgery
- Fellowship-trained orthopedic surgeon
- Internationally recognised, more than 1500 surgeries performed
What is Robotic Knee Replacement?
Robotic knee replacement is a surgical procedure that uses specialised robotic systems to assist surgeons in replacing a damaged or diseased knee joint with a prosthetic implant. This computer-assisted approach utilises three-dimensional imaging and real-time feedback to support detailed planning and accurate execution, tailored to the patient’s anatomy, addressing knee conditions that limit mobility and daily activities.
Indications for Robotic Knee Replacement
Robotic knee replacement is recommended for conditions that significantly impair knee function and require surgical intervention. These include:
Severe Osteoarthritis
Advanced cartilage degeneration in the knee joint leads to bone-on-bone contact, causing chronic pain, stiffness, and difficulty performing daily activities such as walking or climbing stairs.
Rheumatoid Arthritis
An autoimmune condition where the immune system attacks the joint lining, resulting in severe inflammation, joint deformity, pain, and reduced mobility, often unresponsive to medication or physical therapy.
Post-Traumatic Arthritis
Damage to the knee joint caused by a previous injury, such as fractures or ligament tears, can lead to long-term pain, swelling, stiffness, and restricted movement that may necessitate surgical replacement.
Failed Previous Knee Surgery
Complications from a prior knee surgery, including implant loosening, infection, or wear and tear over time, can result in pain, instability, and loss of function, requiring a revision procedure.
Benefits of Robotic Knee Replacement
Robotic-assisted knee replacement offers several advantages over traditional methods, including:
- Enhanced Implant Alignment and Placement: Robotic systems use pre-operative imaging and real-time feedback to optimise implant positioning, reducing the risk of misalignment and related complications.
- Potential for Faster Recovery: The procedure may result in less tissue disruption, supporting quicker patient rehabilitation. However, recovery times vary depending on individual factors.
- Improved Joint Function and Longevity: Accurate implant alignment helps restore natural joint movement, reducing stress on the implant and potentially increasing its lifespan.
- Tailored Surgical Approach: The use of 3D modelling and imaging allows the procedure to be customised to the patient’s specific knee structure and condition, enhancing the overall surgical outcome.
Preparing for Surgery
Medical Assessment
Medication Review
Certain medications, such as blood thinners, may need to be paused temporarily or adjusted to reduce the risk of excessive bleeding during surgery.
Imaging Studies
CT scans or MRIs produce detailed three-dimensional images of the knee, providing a comprehensive view of the joint structure, including bones, cartilage, and surrounding tissues. These images assist in precise planning for implant placement and alignment during surgery.
Fasting Before Surgery
You will likely need to fast for 8 to 12 hours prior to surgery. This ensures that your stomach remains empty during anaesthesia, lowering the risk of complications like aspiration.
Step-by-Step Procedure
Anaesthesia and Preparation
General or regional anaesthesia is administered to keep the patient comfortable throughout the procedure. The surgical site is cleaned, sterilised, and covered with sterile drapes to create a controlled environment.
Joint Exposure and Bone Preparation
An incision is made to access the knee joint, and damaged cartilage and bone are removed. The robotic system provides real-time guidance, helping the surgeon shape the bone surfaces to fit the implant design while preserving healthy tissue.
Implant Placement and Alignment
Trial prosthetic components are fitted to confirm the correct size, positioning, and alignment. Once verified, the final implant is secured in place using robotic assistance to optimise joint balance and stability.
Assessment and Closure
The surgeon evaluates the knee’s alignment, stability, and motion to confirm proper functionality. The incision is then closed, and a sterile dressing is applied to support healing and protect the surgical site.
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Post-Surgical Care and Recovery
Immediate Recovery Period
Pain management starts immediately after surgery, typically using medications and, in some cases, localised pain relief techniques. Gentle knee movement is usually encouraged within the first 24 hours to minimise stiffness and promote circulation.
Rehabilitation Phase
Physical therapy begins in the hospital and continues after discharge, focusing on restoring mobility and strength. Walking aids, such as crutches or walkers, are typically used initially, with gradual progression to independent walking based on recovery progress.
Ongoing Recovery and Follow-up
Recovery continues for several months as the knee regains strength and function. Regular follow-up appointments monitor progress and implant performance. Activity levels are gradually increased according to the rehabilitation plan.
Potential Risks and Complications
Like any surgery, robotic knee replacement has potential risks, including infection, blood clots, implant loosening, nerve or blood vessel damage, and stiffness in the knee joint. These are typically rare but require immediate medical attention if they occur.
Dr Wang Lushun
Senior Consultant Orthopaedic Surgeon
MBBS (Singapore)
MRCS (Edin)
MMed (Ortho)
FRCS (Ortho) (Edin)
Internationally Recognised & Double Fellowship-Trained Surgeon With Over 18 Years of Experience
- Bachelor of Medicine & Bachelor of Surgery (MBBS),
National University of Singapore - Member of The Royal College of Surgeons (MRCS),
Edinburgh, United Kingdom - Master of Medicine in Orthopaedic Surgery (MMed),
National University of Singapore - Fellow of The Royal College of Surgeons in Orthopaedics and Traumatology (FRCS), Edinburgh, United Kingdom
As a Senior Consultant Orthopaedic Surgeon and former Head of the Hip and Knee Division in Ng Teng Fong Hospital, he has won awards for superior patient outcomes (value driven), service quality and enhanced recovery programmes. His patients include current and former national athletes and sporting professionals.
Why Choose
Dr Wang Lushun?
Trusted
Leadership on Orthopaedic Advisory Boards
Skilful
Double Fellowships at Centres of Excellence
Experienced
Senior Consultant with Over 18 Years of Experience
Patient-Centred Orthopaedic Care
We are dedicated to your recovery and well-being. Every patient deserves the freedom that comes with active living. Whether you're an athlete sidelined by an injury or a weekend hobbyist desperate to return to your passion, our mission is to help you regain your mobility and independence.
Personalised Approach For Positive Outcomes
Our clinic prioritizes time dedicated to understanding each patient’s injuries and needs. Dr Wang strongly believes that personalised care & patient management will lead to better outcomes & positive experiences.
Minimally Invasive Techniques For Faster Recovery
Dr Wang’s extensive experience with minimally invasive procedures allows for less scarring, lower risk of complications and faster recovery compared to traditional surgical methods.
Aftercare Focused On Restoring Mobility & Well-Being
As an avid sportsperson, Dr Wang understands the time and patience required to regain mobility and return to active living. After your procedure is completed, Dr Wang will make sure your recovery is smooth and comfortable.
Insurance
We accept all patients, with or without insurance plans. Additionally, we are on the specialist panels of these Health Networks/Insurance Plans. Please contact us if you have any queries and we will be happy to assist you in checking with your insurance provider.
Our Clinic Locations
3 Mount Elizabeth, #13-14
Mount Elizabeth Medical Centre
Singapore 228510
820 Thomson Road, Mount Alvernia Hospital, #05-51, Medical Centre D, Singapore 574623
Frequently Asked Questions
How long does a robotic knee replacement surgery typically take?
The surgical procedure itself takes about 1.5 to 2 hours. Including preparation and anaesthesia recovery, the total time in the operating theatre is approximately 3 hours.
How long does a knee implant last?
Knee implants generally last 15–20 years, but their lifespan can be influenced by factors such as the patient’s activity level, body weight, and adherence to post-surgical care guidelines.
Are there weight or age restrictions for robotic knee replacement?
There are no absolute weight or age restrictions, but suitability depends on factors like overall health, bone quality, and the extent of knee damage. Younger, elderly, or significantly overweight patients may require a detailed assessment before surgery.