Revision Knee Replacement

Why would a knee replacement need to be revised?

Worn out plastic (polyethylene) bearing - The plastic part of the prosthesis can simply wear down over time. In many cases, replacing only this plastic piece will provide many years of continued good function without having to replace the parts that are cemented to the bone.

Loose prosthesis - The prosthetic parts that are cemented to the femur, tibia or patella can become loose over time.

Infection - An infected knee replacement almost always needs to be removed and revised. Although infections are uncommon, they are a very serious complication. Patients are often surprised to learn that infections can happen right after surgery or months or years later. Most late infections happen when an infection from another part of the body spreads to the artificial knee through the blood stream. 

Bone damage - As the plastic bearing wears out, it produces microscopic debris that can cause the bone to deteriorate. This can cause pain, loosening of the prosthesis, and even fracture. 

Instability - When the ligaments that support the knee are disrupted from trauma or when the plastic bearing has worn so thin that the ligaments are not properly tensioned.

Prosthesis Options for Revision Knee Replacement

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