Revision Knee Replacement is a surgical procedure performed to replace or repair a previously implanted knee replacement prosthesis that has failed, worn out, or caused complications.

In this procedure, the surgeon removes part or all of the old artificial knee components and replaces them with new specialized implants designed for revision surgery.

Revision surgery is generally more complex than Total Knee Replacement because it may involve bone loss, scar tissue, or ligament damage that must be carefully reconstructed.

1. Partial Revision Knee Replacement

In this procedure, only one component of the knee implant is replaced, while the remaining parts that are functioning properly are preserved.

Common examples

• Replacement of the tibial component only
• Replacement of the femoral component only
• Replacement of the polyethylene insert

Benefits

• Less invasive than full revision
• Shorter recovery time
• Preserves healthy bone and tissues

2. Total Revision Knee Replacement

In this surgery, all components of the existing knee implant are removed and replaced with new prosthetic components.

It is typically required when:

• Multiple components are worn out
• The implant has become loose
• Severe damage or infection is present

Features

• Use of specialized revision implants
• May include longer stems or metal augments for stability

3. Single-Stage Revision Knee Replacement

This procedure is usually performed when infection is present but can be treated during the same surgery.

The surgeon:

1. Removes the infected implant
2. Cleans the joint thoroughly
3. Places a new implant in the same operation

Advantages

• Only one surgery required
• Faster overall recovery

4. Two-Stage Revision Knee Replacement

This is the most common method used to treat infected knee replacements.

Stage 1

• Removal of infected implant
• Placement of an antibiotic spacer
• Antibiotic treatment for several weeks

Stage 2

• New knee implant is inserted once the infection is cleared

This approach has a higher success rate in controlling infection.

5. Complex Reconstruction Revision

This is performed in cases involving:

• Severe bone loss
• Ligament instability
• Multiple failed surgeries

Specialized implants may be used, such as:

• Hinged knee prostheses
• Metal augments
• Bone grafts
• Custom revision implants