Total knee replacement is a surgical procedure in which damaged surfaces of the knee joint are removed and replaced with prosthetic components designed to relieve pain and restore function. It is usually considered when knee pain and stiffness significantly affect everyday life and non-surgical treatment is no longer providing enough relief.
For many patients in Singapore, the decision to explore total knee replacement comes after months or years of managing pain through medication, physiotherapy, or injections, with diminishing results. This page covers the full patient journey: when surgery is considered, what happens before and during the operation, what recovery involves, and how to choose a specialist in Singapore.
Key things to know before you read on:
- Total knee replacement is one of the most commonly performed and well-studied orthopaedic procedures in the world, with consistently high rates of patient satisfaction.
- Surgery is not the first option. A thorough specialist assessment will always explore whether non-surgical treatment can still help before recommending an operation.
- Recovery takes time and commitment, but most patients experience significant and lasting pain relief once rehabilitation is complete.
Table of Contents
- What Is Total Knee Replacement?
- Am I a Candidate for Total Knee Replacement?
- What Happens During Total Knee Replacement Surgery?
- Other Knee Replacement Options to Know About
- Recovery and Rehabilitation After Total Knee Replacement
- Risks and Complications of Total Knee Replacement
- Cost of Total Knee Replacement in Singapore
- Why Choose Singapore Sports and Orthopaedic Clinic for Total Knee Replacement?
- Frequently Asked Questions About Total Knee Replacement in Singapore
What Is Total Knee Replacement?
Total knee replacement, also called total knee arthroplasty, is a procedure in which the worn or damaged surfaces of the knee joint are removed and resurfaced with metal and plastic implant components. The goal is to eliminate the bone-on-bone contact that causes pain, restore the knee’s natural alignment, and allow patients to move more freely and comfortably.
The knee joint involves three bones: the femur (thigh bone), the tibia (shin bone), and the patella (kneecap). In a healthy knee, smooth cartilage cushions these surfaces. When that cartilage breaks down, the result is pain, stiffness, swelling, and progressive loss of function.
Conditions that may lead to total knee replacement
Total knee replacement is most commonly performed for:
- Osteoarthritis: the most frequent cause, where cartilage gradually wears away with age and use
- Rheumatoid arthritis: an autoimmune condition that causes chronic joint inflammation and joint damage
- Post-traumatic arthritis: arthritis that develops after a significant knee injury such as a fracture or ligament tear
- Avascular necrosis: deterioration of bone tissue due to reduced blood supply
When conservative treatment is no longer enough
Surgery is not the starting point. Before total knee replacement is considered, most patients will have already tried one or more of the following without lasting relief:
- Physiotherapy and targeted muscle strengthening
- Anti-inflammatory medication and pain management
- Corticosteroid or hyaluronic acid injections
- Activity modification and weight management
- Knee bracing or walking aids
Am I a Candidate for Total Knee Replacement?
This is the question most patients arrive with, and it deserves a direct answer. Candidacy depends far less on age than most people assume and far more on the severity of joint damage, the impact on daily life, and whether other treatments have been exhausted.
A specialist orthopaedic surgeon will evaluate several factors before recommending total knee replacement, including the degree of cartilage loss visible on imaging, the pattern and severity of pain, how limited mobility has become, and the patient’s overall health and ability to undergo surgery and rehabilitation safely.
Signs that may indicate suitability
| Signs you may be a candidate | Reasons more non-surgical treatment may still be tried |
| Severe knee osteoarthritis confirmed on X-ray | Mild to moderate arthritis with intact cartilage |
| Persistent pain despite medication, injections, and physiotherapy | Pain that responds well to anti-inflammatory medication |
| Significant loss of function affecting daily independence | Limited functional impact on daily life |
| Knee deformity such as bowing or misalignment | No significant structural deformity |
| Pain at rest or at night, not only during activity | Pain only during high-impact activity |
| Difficulty with stairs, walking, or rising from a chair | No meaningful difficulty with everyday tasks |
| Failed previous knee procedures | No prior surgical intervention on the knee |
Age, BMI, and general health
Age alone does not determine suitability. Many patients in their 70s and 80s undergo total knee replacement successfully. Equally, some patients in their 50s with severe joint damage may be appropriate candidates.
What matters more are the following health and lifestyle factors:
- Body weight: higher BMI increases mechanical load on the new joint and can affect wound healing; your surgeon will discuss this if relevant
- Diabetes and cardiovascular health: well-controlled conditions are manageable, but poorly controlled diabetes or significant heart disease may affect surgical risk and recovery
- Smoking: smoking impairs healing and increases infection risk; patients are typically advised to stop before surgery
- Ability to participate in rehabilitation: recovery requires active engagement with physiotherapy; patients who are unable to commit to this may have poorer outcomes
Not every painful knee needs to be replaced
The goal of a specialist assessment is to find the most appropriate treatment for your specific situation. At Singapore Sports and Orthopaedic Clinic, the approach is conservative treatment first. Surgery is only recommended when it is genuinely the most appropriate option for the individual patient, based on a thorough clinical and imaging review.
If you are unsure whether your symptoms have reached the point where surgery may be considered, a specialist consultation is the most reliable way to find out.
What Happens During Total Knee Replacement Surgery?
Total knee replacement is performed under spinal (regional) or general anesthesia. The choice depends on the patient’s medical history, the anesthesiologist’s assessment, and patient preference. Spinal anesthesia, which numbs the lower body while the patient remains awake or lightly sedated, is commonly used and associated with a lower risk of certain complications. The operation typically takes between one and two hours.
The procedure is carefully planned in advance based on your imaging and physical assessment. The surgeon’s goal is to restore a functional, pain-free joint that is properly aligned and stable.
Step 1: Preparing the joint
A surgical incision is made along the front of the knee. The kneecap is gently moved aside to expose the damaged joint surfaces of the femur (thigh bone) and tibia (shin bone).
Step 2: Removing damaged bone and cartilage
The worn joint surfaces are precisely resected using surgical guides. The amount of bone removed is carefully measured to match the thickness of the implant components that will replace them. Accurate resection is critical to achieving correct alignment and a natural-feeling result.
Step 3: Attaching the implants
Metal components are fixed to the reshaped ends of the femur and tibia. A medical-grade plastic spacer is placed between them to allow smooth, low-friction movement. If the underside of the kneecap is also worn, it may be resurfaced with a plastic component.
Step 4: Closing the wound
The wound is closed in layers, dressed, and the knee is bandaged. Most patients are helped to stand and take their first steps with support on the same day or the day after surgery.
Other Knee Replacement Options to Know About
Robotic-assisted total knee replacement
For suitable patients, robotic-assisted total knee replacement is available at Singapore Sports and Orthopaedic Clinic. Robotic guidance allows for highly precise bone preparation and implant positioning, tailored to each patient’s unique anatomy. This can be particularly valuable in complex cases or where anatomical variation requires a more customized approach.
What about revision knee replacement?
In some cases, a knee replacement performed years earlier may require revision surgery if implant components wear out, loosen, or if complications arise. Revision procedures are distinct from primary replacement and are assessed individually. If you have concerns about a previous knee replacement, a specialist review will clarify your options.
If a previous knee replacement has failed or is causing problems, read our guide to Revision Knee Replacement in Singapore.
Recovery and Rehabilitation After Total Knee Replacement
Recovery after total knee replacement is gradual. Most patients experience significant improvement over the first three to six months, with continued progress for up to a year. The single biggest factor in how well and how quickly you recover is commitment to rehabilitation.
It is normal to experience pain, swelling, and stiffness in the early weeks. These are expected parts of the healing process and are managed with medication, ice, elevation, and guided physiotherapy. Most patients find that pain levels improve steadily as rehabilitation progresses.
Recovery timeline: what to expect at each stage
| Period | What typically happens |
| Day 1 to 2 post-surgery | Most patients begin standing and walking short distances with support on the day of or day after surgery. Pain is managed with medication. |
| Week 1 to 2 | Discharge from hospital once mobility targets are met. Walking with a frame or crutches. Wound care and early physiotherapy exercises begin. |
| Week 3 to 6 | Swelling gradually reduces. Walking distance increases. Physiotherapy focuses on range of motion and strengthening. Most patients transition from a frame to a single crutch or walking stick. |
| Month 2 to 3 | Many patients can walk independently for moderate distances. Climbing stairs becomes easier. Driving may resume once cleared by your surgeon, typically around six weeks. |
| Month 3 to 6 | Continued strength and flexibility gains. Most daily activities resume. Discomfort during activity reduces significantly. |
| Month 6 to 12 | Full recovery for most patients. Low-impact activities such as swimming, cycling, and walking are well-tolerated. High-impact sports are generally not recommended. |
The role of physiotherapy in recovery
Physiotherapy is not optional after total knee replacement. It is a core part of the treatment plan. A structured rehabilitation program helps restore muscle strength, improve joint mobility, reduce swelling, and teach safe movement patterns that protect the new joint.
At Singapore Sports and Orthopaedic Clinic, the in-house physiotherapy team works directly alongside the orthopaedic surgeons. This means your rehabilitation is coordinated from the outset, with the same clinical team involved in your pre-operative planning continuing to support your recovery.
What affects recovery outcomes?
Several factors influence how quickly and fully a patient recovers:
- Pre-operative fitness: patients who are stronger before surgery tend to recover faster; a short course of prehab physiotherapy may be recommended
- Adherence to physiotherapy: completing exercises consistently makes a measurable difference
- Managing swelling: elevation, ice, and compression in the early weeks help control inflammation
- Body weight and overall health: maintaining a healthy weight and managing conditions such as diabetes beforehand reduces recovery risk
Risks and Complications of Total Knee Replacement
Total knee replacement has a strong track record as a pain-relieving procedure, but like any major surgery, it carries real risks that every patient should understand before deciding to proceed. A specialist will discuss these with you in detail during your preoperative consultation.
Key risks to be aware of
- Blood clots (deep vein thrombosis or pulmonary embolism): one of the more common post-operative concerns; managed with blood-thinning medication and early mobilisation after surgery
- Infection: a serious but uncommon complication; preventive antibiotics are given routinely, and wound care instructions are provided on discharge
- Stiffness and limited range of motion: some patients do not regain a full range of movement; structured physiotherapy is critical in reducing this risk
- Persistent pain: a minority of patients continue to experience pain after surgery; thorough pre-operative assessment helps identify those at higher risk
- Implant wear or loosening: over many years, components may wear or shift, potentially requiring revision surgery
- Wound healing complications: more common in patients with diabetes, obesity, or compromised circulation
- Anaesthesia-related risks: managed through pre-operative medical assessment and careful monitoring during surgery
Weighing benefits against risks
The decision to proceed with surgery is never taken lightly. A thorough specialist assessment weighs your individual risk profile, the severity of your symptoms, and the likely benefits for your specific situation. For most patients with advanced knee arthritis who have exhausted conservative treatment, lasting pain relief and restored mobility significantly outweigh the risks.
Cost of Total Knee Replacement in Singapore
The cost of total knee replacement in Singapore varies considerably depending on a range of factors. Understanding what influences pricing helps patients plan ahead and ask the right questions during their consultation.
What affects the cost
| Factor | What to know |
| Private vs restructured hospitals | Private hospitals generally have higher overall costs but offer more flexibility in surgeon choice, ward class, and scheduling. Restructured hospitals (public) may have lower base costs but longer waiting times. |
| Implant selection | Standard implants and premium implants differ in price. Your surgeon will discuss which type is appropriate for your anatomy and activity level. |
| Surgeon and anaesthetist fees | These vary by surgeon experience, case complexity, and whether robotic-assisted techniques are used. |
| Hospital stay duration | Most patients stay between three and five days post-surgery. Longer stays due to complications or slower recovery will affect the total bill. |
| Robotic-assisted surgery | Robotic-assisted total knee replacement typically carries an additional cost but may offer benefits in precision for suitable candidates. |
| Pre- and post-operative care | Physiotherapy, imaging, and follow-up consultations contribute to the overall cost of the treatment journey. |
Financing and claims in Singapore
Total knee replacement is a claimable procedure under Singapore’s healthcare financing schemes, subject to eligibility and individual plan details:
- Medisave: patients may use Medisave to offset a portion of the hospitalisation and surgical costs, subject to withdrawal limits
- MediShield Life: provides coverage for large hospital bills; the amount claimable depends on ward class and the procedure’s claim limit
- Integrated Shield Plans (IPs): private insurance riders can significantly reduce out-of-pocket costs for patients with appropriate coverage
The exact amount claimable depends on your insurer, ward class, plan type, and individual circumstances. For a clearer picture of what applies to your situation, visit the clinic’s finance and insurance page or raise this directly during your consultation.
Cost should not be a reason to delay a necessary assessment. A specialist consultation will give you a personalized estimate based on your diagnosis and the recommended treatment pathway.
Why Choose Singapore Sports and Orthopaedic Clinic for Total Knee Replacement?
Choosing the right orthopaedic surgeon and clinical team is one of the most important decisions in this process. The quality of your pre-operative assessment, the clarity of your treatment discussion, and the coordination of your post-operative care all depend on the team you choose.
Our joint replacement specialist
Total knee replacement at Singapore Sports and Orthopaedic Clinic is led by Dr. Kelvin Tan Guoping, Senior Consultant and Specialist Orthopaedic Surgeon with over 15 years of experience in hip and knee replacement, including complex and revision cases. Dr. Tan previously served as head of Adult Reconstruction at Tan Tock Seng Hospital and Chairman of the Singapore Arthroplasty Society, and has performed over 500 Mako robotic-assisted procedures.
What sets SSOC apart
- Conservative treatment first: surgery is only recommended when it is genuinely the most appropriate option
- Same-day appointments: patients who need prompt assessment are seen quickly
- Imaging coordinated in advance: X-rays and MRI scans arranged before your consultation so results are available on the day
- In-house physiotherapy: the physio team works directly alongside the surgeons, ensuring rehabilitation is integrated from the start
- Robotic-assisted capability: for suitable patients, robotic-assisted total knee replacement is available for greater precision in implant positioning
A consultation is not a commitment to surgery. It is an opportunity to understand your diagnosis, explore your options, and get expert guidance on the most appropriate next step for your knee.
If knee pain is affecting your daily life, a specialist assessment is the clearest path to understanding your options. A consultation is not a commitment to surgery. It is an opportunity to review your diagnosis, discuss whether total knee replacement is appropriate, and get expert guidance on the right next step for you.
Consider booking a consultation if:
- Knee pain has not responded adequately to medication, physiotherapy, or injections
- Everyday tasks such as climbing stairs, walking, or getting up from a chair are becoming increasingly difficult
- You have been told by a doctor that surgery may be needed and want a specialist opinion
At Singapore Sports and Orthopaedic Clinic, same-day appointments are available. Imaging can be arranged in advance so your surgeon has everything needed to give you a thorough and informed assessment on the day.
Call +65 8805 4227 or book an appointment through contact form and our specialist orthopaedic team will get back to you shortly.
Rest assured that the best possible care will be provided for you.
Frequently Asked Questions About Total Knee Replacement in Singapore
