When is knee replacement revision surgery necessary?

Hello,

Severe knee pain after a knee replacement can be very worrying, especially when the doctor has advised changing the implant. Please do not panic, but do not ignore the pain either. An implant does not always need to be changed simply because there is pain. The exact reason for the pain and implant problem should first be confirmed by an orthopaedic joint-replacement specialist.

Why Can a Knee Implant Need to Be Changed?

A previously implanted knee joint may develop problems such as :

• Implant loosening

• Wear or damage of the implant

• Knee instability

• Infection around the implant

• Bone damage or fracture around the implant

• Problems with implant alignment or movement

These problems can cause severe pain, swelling, difficulty walking and reduced knee movement.

What Should Be Done Before Implant Change?

The doctor recommend :

1. A detailed examination of the knee.

2. X-ray of the knee to check the position and condition of the implant.

3. Additional scans if required to assess the bone and implant.

4. Blood tests such as ESR and CRP when infection is suspected.

5. Joint-fluid testing if the doctor needs to rule out infection.

6. Review of previous knee replacement records, implant details and earlier X-rays.

Finding the actual cause is important because treatment differs for infection, loosening, instability and other implant problems.

What Precautions Should Be Taken Now?

Until the orthopaedic doctor gives specific instructions :

• Avoid running, jumping and high-impact activities.

• Avoid deep squatting and repeated stair climbing if these increase pain.

• Do not kneel or sit on the floor if it causes discomfort.

• Do not lift heavy weights.

• Use a walking stick, walker or other support if the doctor recommends it.

• Do not start forceful knee exercises on your own.

• Take prescribed pain medicines only as advised by the doctor.

• Do not massage or manipulate the painful knee forcefully.

What Exercise Is Safe?

When an implant problem is suspected, exercises should be individualized. Gentle movements may be allowed, but do not perform aggressive strengthening, deep bending or resistance exercises until the joint-replacement specialist confirms that they are safe.

If the doctor allows movement, gentle ankle pumps, comfortable knee bending and straightening may help maintain mobility. Stop any exercise that causes significant pain or swelling.

When Is Immediate Medical Attention Needed?

Please seek urgent medical care if there is :

• Fever or chills

• Increasing redness or warmth around the knee

• Pus or fluid coming from the wound

• Sudden severe swelling

• Sudden inability to stand or bear weight

• Severe pain that is rapidly worsening

• Sudden change in the position or movement of the knee

Please take the doctor's advice seriously, but before implant revision, ask clearly what has damaged or affected the existing implant and whether infection has been ruled out. A proper evaluation can help the doctor decide whether revision knee replacement is required and what type of treatment is appropriate.

It is understandable to feel worried when another procedure is being discussed after an earlier knee replacement. Getting the cause of the pain clearly identified and following the joint-replacement specialist's plan can help you move forward safely.

Wishing you and your family good health always.
Warm regards,
Team HexaHealth