A total knee joint replacement may need to be revised (changed) if it is causing significant symptoms.  This may be a result of infection, excessive wear, loosening, instability or pain.  Fortunately, this surgery is rarely required, occurring in only 4% of joints after 10 years. The operation is often complex with the extent of surgery depending on the severity of the underlying problem. 

 

Extensive investigation is required before considering revision surgery.  This usually includes blood tests to exclude infection, X-Ray imaging of the knee and both legs in entirety, and a bone scan. Once the issue is diagnosed, a plan is formulated to deal with the symptoms.