Some patients develop painful arthritic knee symptoms, but x-rays show the arthritic process is purely localised to the patella-femoral (kneecap) part of the knee. In these particular patients replacing just the kneecap is extremely beneficial.
The operation is less extensive and as the patient retains the majority of their own knee, their post operative function is tremendous.
These pre-operative x-rays show no arthritis between the thigh and shin bones but marked arthritis at the patella-femoral (kneecap) part of the knee.
These post operative x-rays show the replaced patella-femoral (kneecap) joint, but the majority of the patient’s own knee is retained.