Knee Replacement Surgery in Singapore

Effective Knee Replacement to Restore Mobility

Knee pain caused by arthritis or injury can be debilitating, affecting your ability to walk, work, exercise, and enjoy life. When conservative treatments are no longer effective, knee replacement surgery may offer lasting relief and improved function.

At Quantum Orthopaedics, we provide effective care in knee replacement surgery in Singapore, offering both partial and total knee replacement using advanced surgical techniques.

What is Knee Replacement Surgery?

Knee replacement, also known as knee arthroplasty, is a surgical procedure where damaged or worn-out parts of the knee joint are replaced with artificial components. It is typically recommended for patients suffering from severe osteoarthritis, rheumatoid arthritis, or post-traumatic arthritis that has not responded to non-surgical treatment.

The procedure involves removing the damaged cartilage and bone from the surface of the knee joint and replacing them with metal and plastic components designed to restore alignment and function.

There are two main types of knee replacement procedures:

• Total Knee Replacement (TKR): The entire knee joint is replaced, including the femur (thighbone), tibia (shinbone), and patella (kneecap).
  
• Partial Knee Replacement (PKR): Only the damaged portion of the knee is replaced, preserving as much of the natural knee structure as possible.

Who Needs Knee Replacement Surgery?

Knee replacement is typically recommended when:

• Knee pain significantly limits daily activities (e.g., walking, climbing stairs)
• Pain persists even while resting or at night
• There is visible swelling or deformity in the knee joint
• Conservative treatments such as physiotherapy, medications, or injections have failed
• Imaging shows advanced joint degeneration or bone-on-bone arthritis
  

Patients who undergo knee replacement are often those over the age of 50, but younger patients with severe joint damage may also benefit from surgery.

Common Conditions Leading to Knee Replacement

Several conditions may lead to the need for knee replacement surgery:

Osteoarthritis

The most common reason for knee replacement, osteoarthritis is a degenerative joint disease where cartilage wears away over time, causing bones to rub against each other.

Rheumatoid Arthritis

An autoimmune disease that leads to inflammation and erosion of the joint lining, resulting in pain and stiffness.

Post-Traumatic Arthritis

Arthritis that develops after an injury to the knee, such as fractures, ligament tears, or meniscus damage.

Avascular Necrosis

A condition where reduced blood flow to the bone causes bone tissue to die, often leading to joint collapse.

What to Expect During Knee Replacement Surgery

At Quantum Orthopaedics, knee replacement surgery is performed by an experienced orthopaedic surgeon using evidence-based techniques and advanced implant technology.

Pre-operative Assessment

• Detailed medical history and physical examination
• Imaging tests such as X-rays or MRI
• Assessment of overall health to ensure surgical readiness
  

The Procedure

• Performed under general or spinal anaesthesia
• Damaged cartilage and bone are removed
• Artificial joint components are implanted to restore alignment and movement
• The procedure typically takes 1 to 2 hours
  

Post-Surgery and Recovery

• Patients begin walking (with assistance) within 24 hours
• Pain management and physiotherapy start immediately
  Most patients are discharged within 2 to 4 days
• Full recovery typically takes 3 to 6 months, depending on individual progress

Advantages of Knee Replacement Surgery

Knee replacement is one of the most successful orthopaedic procedures. Benefits may include:

• Significant reduction or elimination of knee pain
• Improved mobility and function
• Enhanced quality of life and ability to return to activities
• Long-term durability (implants can last 15–20 years or more)

Modern surgical techniques and prosthetic materials have improved outcomes and reduced complications, allowing many patients to enjoy active, pain-free lives after surgery.

Non-Surgical Alternatives to Consider First

Before recommending surgery, your specialist will always explore non-surgical options such as:

• Weight management
• Activity modification
• Physiotherapy
• Anti-inflammatory medications
• Corticosteroid or hyaluronic acid injections
• Platelet-rich plasma (PRP) therapy

If these treatments no longer provide relief, knee replacement may be the most effective next step.

Preparing for Knee Replacement Surgery

Proper preparation is key to a smooth recovery. You’ll receive detailed instructions before surgery, which may include:

• Pre-operative physiotherapy to strengthen surrounding muscles
• Blood tests and medical clearance from your primary physician
  Discontinuation of certain medications (e.g., blood thinners)
• Planning for post-operative assistance at home

We will also discuss your expectations, goals, and address any concerns you may have about the surgery.

Recovering from Knee Replacement Surgery

Recovery from knee replacement surgery is a gradual process that involves rehabilitation, follow-up care, and lifestyle adjustments. At Quantum Orthopaedics, we support our patients through every stage of recovery with a structured and personalised rehabilitation plan designed to restore function, reduce pain, and prevent complications.

What to Expect After Surgery

Hospital Stay

Most patients stay in the hospital for 2 to 4 days. During this time, our medical team will manage your pain, monitor for any complications, and start early mobilisation.

Pain Management

Modern techniques such as spinal anaesthesia, nerve blocks, and oral medications help keep discomfort under control. Pain typically improves significantly within the first few weeks.

Early Mobilisation

You will begin walking with assistance (e.g., walker or crutches) within 24 hours of surgery. Early movement helps reduce the risk of blood clots and speeds up recovery.

Life After Knee Replacement

After full recovery, most patients experience dramatic improvements in pain, mobility, and quality of life. You may return to low-impact activities such as walking, swimming, cycling and golfing. High-impact sports like running or basketball may be discouraged, but most patients are able to lead active and independent lives with their new knee.

Frequently Asked Questions (FAQs)

How long does a knee replacement last?

Most knee implants last 15–20 years, or even longer with proper care and activity modification.

What is the recovery time for knee replacement surgery?

Initial recovery takes 6–12 weeks, with most patients resuming normal daily activities in 3 months. Full recovery may take up to 6 months.

Is knee replacement surgery painful?

You may experience some discomfort during recovery, but modern pain management techniques help control post-operative pain effectively.

Are there risks involved?

As with any surgery, there are risks such as infection, blood clots, or implant issues. However, complications are rare and can be managed with prompt medical care.

Can both knees be replaced at the same time?

Yes, this is called bilateral knee replacement. It may be considered for patients with severe arthritis in both knees, but it requires careful patient selection.