Revision Knee Replacement means that part or all of your previous knee replacement needs to be revised. This operation varies from very minor adjustments to massive operations replacing significant amounts of bone. The typical knee replacement replaces the ends of the femur (thigh bone) and tibia (shin bone) with plastic inserted between them and usually the patella (knee cap).
Why does a knee replacement needs to be revised?
Pain is the primary reason for revision. Usually the cause is clear but not always. Knees without an obvious cause for pain in general do not do as well after surgery.
Plastic (polyethylene) wear – This is one of the easier revisions where only the plastic insert is changed.
Instability – This means the knee is not stable and may be giving way or not feel safe when you walk.
Loosening of either the femoral, tibial or patella component – This usually presents as pain but may be asymptomatic. It is for this reason why you must have your joint followed up for life as there can be changes on X-ray that indicate that the knee should be revised despite having no symptoms.
Infection– usually presents as pain but may present as swelling or an acute fever.
Osteolysis (bone loss)– This can occur due to particles being released into the knee joint that result in bone being destroyed.
Stiffness– This is difficult to improve with revision but can-
Your surgeon will send you for routine blood tests and any other
Investigations required prior to your surgery
You will be asked to undertake a general medical check-up with a physician
You should have any other medical, surgical or dental problems attended to prior to your surgery
Make arrangements for help around the house prior to surgery
Cease aspirin or anti-inflammatory medications 10 days prior to surgery as they can cause bleeding
Cease any naturopathic or herbal medications 10 days before surgery
Stop smoking as long as possible prior to surgery