Treatment options

Total Knee Replacement Surgery in Singapore: An Expert Guide

Crippling knee pain is truly an insidious thing, often forcing you to contemplate Total Knee Replacement (TKR) only after exhausting all other options. TKR is almost always considered the last resort when conditions have made the joint severely unworkable.

What is Total Knee Replacement Surgery?

The Total Knee Replacement (TKR) procedure is generally considered when less invasive treatments have provided insufficient relief, offering a pathway toward restoring long-term mobility and function.

How a Knee Replacement Works: A Simple Explanation

Think of your knee joint as a complex hinge. When the smooth cartilage that covers the ends of your bones wears away, this hinge becomes rusty and stiff, causing the bones to grind together painfully.

A total knee replacement is, at its core, a resurfacing procedure. It is not about removing your entire knee joint, but rather replacing only the damaged surfaces. An orthopaedic surgeon carefully removes the worn-out cartilage and a small amount of underlying bone from the end of your thighbone (femur) and the top of your shinbone (tibia). These surfaces are then “capped” with high-grade metal implants. A medical-grade plastic spacer is inserted between them to act as new cartilage, allowing the joint to glide smoothly and without pain.

Who is an Ideal Candidate for This Surgery?

The decision to have a TKR is not based on age alone but on an individual’s level of pain and disability. While most patients are between 50 and 80, the primary focus is on your quality of life.

You may be an ideal candidate for surgery if you experience:

  • Severe, persistent knee pain that limits your everyday activities, such as walking, climbing stairs, or getting in and out of chairs.
  • Moderate to severe pain while resting, which may disrupt your sleep.
  • Chronic knee inflammation and swelling that does not improve with rest or medication.
  • A knee deformity, such as a joint that is bowing in or out.
  • Failure to get relief from non-surgical treatments like physiotherapy, injections, or activity modifications.

Why Might You Need Knee Replacement? (Key Causes)

Knee replacement is generally required when the joint surfaces are critically damaged, resulting in bone-on-bone friction and persistent pain, primarily due to severe osteoarthritis (OA) or other chronic conditions like rheumatoid arthritis.

By far, the most common reason for total knee replacement surgery is severe osteoarthritis (OA). This is often called “wear-and-tear” arthritis. Over a lifetime, the protective articular cartilage that cushions your knee joint gradually breaks down. As this cartilage thins, the bones begin to rub against each other, causing friction. The body may try to compensate by creating bone spurs, which can worsen pain and stiffness. This bone-on-bone contact is the source of the deep, aching pain and loss of motion typical of advanced OA.

While OA is the most frequent cause, other conditions can also destroy the knee joint.

  • Rheumatoid Arthritis (RA): This is an autoimmune disease where your body’s own immune system mistakenly attacks the joint lining (synovium). This triggers chronic inflammation that softens and destroys the cartilage, leading to pain and deformity.
  • Post-Traumatic Arthritis: This can develop years after a significant knee injury, such as a bone fracture, a severe ligament tear (like an ACL rupture), or a meniscus tear. The initial trauma damages the joint surface, causing it to wear out more quickly than normal.

It can be difficult to know when “bad knee pain” has become “bad enough” for surgery. The key is to assess your quality of life. It may be time to consult a specialist if:

  • Your knee pain consistently prevents you from sleeping through the night.
  • You find yourself avoiding stairs, walking long distances, or standing for periods.
  • You have had to give up hobbies you once enjoyed, like gardening, golfing, or playing with your grandchildren.
  • You feel a new or worsening grinding, catching, or locking sensation in your knee.
  • You have become increasingly reliant on painkillers or a walking aid (like a cane) to get through your day.

Are There Alternatives to a Total Knee Replacement?

Surgery is not the only option. We explore the full spectrum of non-surgical treatments that can manage knee pain and discuss the differences between a partial and a total knee replacement.

Partial vs. Total Knee Replacement: What’s the Difference?

Your knee has three main compartments. In many patients, arthritis only affects one of these.

  • Partial Knee Replacement (PKR): If your arthritis is confined to a single compartment, you may be a candidate for a PKR. This procedure resurfaces only the damaged section, preserving the healthy bone and ligaments in the rest of your knee. The advantages often include a smaller incision, a quicker recovery, and a more “natural” feeling knee.
  • Total Knee Replacement (TKR): This procedure is necessary when the arthritis is widespread and affects two or more compartments. A TKR resurfaces all three compartments of the knee.

An orthopaedic specialist can determine the extent of your arthritis with a physical examination and X-rays.

Non-Surgical Treatments: Physiotherapy, Injections, and Lifestyle Changes

Before recommending surgery, your orthopaedic specialist will always explore conservative treatment options. These methods can be very effective in the earlier stages of arthritis.

  • Lifestyle Changes: Weight management is paramount. Every 1kg of body weight you lose removes 3-4kg of pressure from your knee joints. Switching from high-impact (running) to low-impact exercise (swimming, cycling) can also reduce pain.
  • Physiotherapy: A targeted exercise programme strengthens the muscles around your knee (quadriceps, hamstrings). Stronger muscles act as better shock absorbers, taking stress off the joint.
  • Injections: Corticosteroid injections can provide powerful, temporary relief from inflammation and pain. Viscosupplementation, another option, involves injecting hyaluronic acid to help lubricate the joint.

The Recovery and Rehabilitation Timeline: What to Expect

Understanding the recovery process helps set realistic expectations and prepares you for the journey ahead. Recovery from TKR is a staged process highly reliant on pain management and dedicated physical therapy.

Immediate Post-Op Care: Hospital Stay, Pain Management, and Early Mobility

The immediate hours and days following your TKR are crucial for managing pain and initiating the joint’s function.

  • Hospital Stay: Expect a stay of 2 to 3 days.
  • Pain Management: A multi-modal pain plan is used. The first 2 to 3 days are often the most challenging due to swelling and the wearing off of anaesthesia.
  • Swelling Control: Regular use of ice packs and Elevation (keeping the leg raised above heart level) is essential for relief.
  • Early Mobilisation: The goal is to have you standing and walking (with a walker and a physiotherapist) within 24 hours of the procedure.

Returning to normal routines requires patience and a gradual transition away from walking aids.

The First 6 Weeks: Building Blocks

Milestone Expected Timeline Details
First Steps
Day 1
With physiotherapist, using a walker or crutches.
Walking Aid Use
3 to 6 Weeks
Use walker/crutches for full support and safety.
Driving
Typically 4 to 8 Weeks
Depends on which leg was operated on (must be off strong pain medication).
Desk Work
2 to 4 Weeks
Can return to sedentary work, ensuring frequent movement and leg elevation breaks.
Milestones at 3 Weeks
3 Weeks
Staples/sutures removed, noticeable reduction in pain, and ability to walk for 10–15 minutes with aid.

The long-term success of your surgery is defined by the quality of functional recovery and adherence to activity restrictions.

  • Physical Therapy: This is the non-negotiable component of recovery, focused on restoring Range of Motion (ROM) and building strength.
  • Full Recovery Timeline: While the wound heals quickly, regaining a truly normal walk without a limp can take 3 months or more. Full joint confidence and endurance may take up to a year.
  • Life Activities:
    • Recommended: Focus on low-impact exercises like walking, swimming, cycling, and golf.
    • Stairs: Follow the technique: “Up with the good” and “Down with the bad.”
    • Crossing Legs: Generally permitted once fully healed, but follow your surgeon’s specific guidance.

Benefits of TKR:

  • Significant Pain Relief: The primary benefit is dramatic and lasting relief from chronic, debilitating arthritis pain.
  • Improved Mobility: Restores the ability to perform daily activities (walking, climbing stairs) limited by a damaged joint.
  • Enhanced Quality of Life: The return to functional mobility allows patients to enjoy low-impact hobbies and greater independence.

Key Considerations for Recovery:

  • Commitment to Physical Therapy: The success of the surgery is heavily dependent on your diligent adherence to the physical therapy program.
  • Home Support: It is strongly recommended to have support for the first 1 to 2 weeks post-discharge for help with household tasks while you focus on rest and rehabilitation.
  • Aids: Using a walker or crutches for the initial 3–6 weeks is mandatory for safety. A raised toilet seat is highly effective for comfort.

Potential Risks:

  • Infection: Infection of the surgical site or the new joint (rare, but serious).
  • Blood Clots (DVT/PE): Managed through early mobilisation and often prophylactic medication.
  • Stiffness: The new joint may become stiff if the rehabilitation plan for Range of Motion (ROM) is not followed diligently.

Disadvantages and Restrictions:

  • Long Recovery Time: Full strength and endurance can take 6 to 12 months to achieve.
  • Activity Restrictions: All high-impact activities (running, jogging, jumping, contact sports) are permanently restricted to protect the longevity of the implant.

Understanding the Cost of Total Knee Replacement in Singapore

We provide a transparent breakdown of the costs associated with total knee replacement in Singapore, including how to navigate Medisave, MediShield Life, and private insurance claims.

In Singapore’s private healthcare system, the total cost for a single Total Knee Replacement surgery typically ranges from SGD 35,000 to SGD 50,000. This all-inclusive estimate generally covers:

  • The surgeon’s and anaesthetist’s professional fees.
  • Hospital costs, including your room, operating theatre charges, and nursing care.
  • The cost of the high-quality knee implant (prosthesis).
  • In-hospital medications, X-rays, and initial physiotherapy.

     

At your consultation, we will provide a detailed and itemised financial counselling sheet, so there are no surprises.

Medisave

Medisave can be used to pay for hospitalisation and approved surgical procedures, up to specific withdrawal limits. For example, a complex knee replacement is claimable up to a certain amount from the Table of Surgical Procedures. 

MediShield Life

This is a basic health insurance plan that helps pay for large hospital bills and selected costly outpatient treatments.

Integrated Shield Plans (IPs)

If you have an IP from a private insurer, it works on top of MediShield Life. These plans are what cover the bulk of the cost if you choose to be treated in a private hospital or an A/B1 ward in a public hospital. It is essential to check your specific plan for coverage, deductibles, and any co-payment required.

WHY CHOOSE DR YONG REN

Your Trusted Knee Pain Specialist

Knee Pain Consultation & X-ray

Dr Yong Ren brings extensive expertise to the field of minimally invasive orthopaedic procedures. His background includes specialist training in Switzerland, focusing on complex orthopaedic trauma and reconstruction, underscoring his capability in handling simple to highly complex joint issues.

Choosing us means you benefit from:

Minimally Invasive Focus

Dr Yong Ren’s practice prioritises the least invasive techniques, leading to smaller scars, less post-operative pain, and faster return to function.

Comprehensive Care Pathway

We believe in treating the whole patient, not just the injury. This includes a full, multi-modal pathway from non-operative treatments (like physical therapy and injections) to the latest surgical techniques.

Local Expertise and Clarity

We provide clear, locally-relevant guidance on everything from the procedure itself to the intricacies of Medisave claimability and insurance processing in Singapore.

Start Your Journey to Recovery Today

If you have been living with persistent pain, or if you have questions about your orthopaedic condition and wish to explore personalised, advanced treatment options, we encourage you to consult with Dr Yong Ren.

Take the first step toward a pain-free life with a $150 Knee Pain Consultation & X-ray.