The optimal time for a total knee replacement is when the non-operative pain control strategies that you’ve been using have stopped working. Then I think in order to control your symptoms, it’s a good idea to engage with the surgeon and to really understand whether this might be a good operation for you. I always encourage my patients to make sure that they’ve got a really good support network around them at home and to have a good physiotherapy that they trust and are looking forward to seeing after the operation, because both these factors are really important and getting them the best result from their operation.