73 year-old Helen has Osteoarthritis. Her right knee has been getting progressively worse. Helen first saw an orthopaedic surgeon about two years ago and was advised to delay surgery by trying to lose some weight, which reduces the load on her knee. Helen has also been doing water aerobics and seeing a physiotherapist to help strengthen her muscles and maintain mobility. But unfortunately, her symptoms have persisted. So, together with her orthopaedic surgeon, Helen decided to have a total knee replacement.