What is Revision Total Knee Replacement? A Complete Guide for Patients: By Dr. Balaraju Naidu, Robotic Orthopedic Surgeon, ONUS Robotic Hospitals

What is Revision Total Knee Replacement? A Complete Guide for Patients: By Dr. Balaraju Naidu, Robotic Orthopedic Surgeon, ONUS Robotic Hospitals

Total Knee Replacement (TKR) is one of the most successful surgeries for severe arthritis. However, like any artificial implant, it may fail after several years or due to complications. When this happens, a second surgery known as Revision Total Knee Replacement becomes necessary.

What is Revision Knee Replacement?

Revision knee replacement is a procedure where the original knee implant is removed and replaced with a new one.
Compared to the first surgery, revision surgery is more challenging because:

• Bone stock is reduced
• Soft tissues are weaker
• Infection may be present
• The knee anatomy may be distorted

Surgeons often use specialized, long-stem implants and advanced techniques to restore stability.

Why Is Revision Knee Replacement Needed?

1. Implant Loosening

Over time, implants may loosen due to wear, inflammation, or patient activity. This causes:

• Pain
• Swelling
• Instability
• Difficulty walking

It is the most common reason for revision.

2. Infection

Infection can occur soon after surgery or years later. Signs include:

• Fever
• Redness
• Warmth
• Persistent pain

Severe infections may require two-stage revision surgery.

3. Instability

If ligaments are imbalanced, the knee may feel like it “slips” or “gives way.” Revision provides better alignment and stronger implants.

4. Wear of Polyethylene Insert

Over time, the plastic insert wears out, releasing particles that cause inflammation and bone loss.

5. Fractures Around the Implant

Trauma or falls can crack the bone around the prosthesis.

6. Stiff Knee

If motion is severely restricted even after months of physiotherapy, revision may help.

How the Procedure Is Done

Revision TKR involves several steps:

1. Pre-operative evaluation
   • X-rays
   • CT scans
   • Blood tests (ESR, CRP)
   • Joint fluid analysis
2. Removal of old implant
3. Reconstruction of bone loss
4. Fixing the new implant
5. Checking alignment, stability, and range of motion
6. Closure and postoperative care

Robotic-assisted systems are extremely helpful in improving accuracy.

Recovery After Revision Surgery

• Weight bearing depends on bone quality
• Physiotherapy begins early
• Pain reduces significantly after 2–4 weeks
• Most patients resume normal activities within 3–6 months

The success rate of revision knee replacement is 85–90% when performed by experienced surgeons.

When Should You Consult a Doctor?

Seek help if you experience:

• Continuous knee pain after replacement
• Difficulty walking
• Clicking or instability
• Swelling or warmth around the knee
• X-ray findings showing implant loosening

Early diagnosis prevents bone loss and improves outcomes.

Revision Total Knee Replacement is a complex but life-changing procedure. With advanced robotic technology and experienced orthopedic surgeons, patients can regain mobility and lead an active, pain-free life.

For Appointments:
ONUS Robotic Hospitals – Hyderabad