My spatial awareness is dreadful and so I am constantly falling almost always involving my left knee. I now have a walker which helps but my GP says my knee really needs replacing. Surgery is always difficult for me as I am on long term Warfarin but what worries me most is that I have seen friends with dementia deteriorate a lot after surgery and when I questioned my GP he admitted it was a 'probability' Does anyone have experience or advice to offer. I really am in awful pain - because I am not good at remembering to take pain killers as much as anything. But I would rather keep my mind a bit longer and suffer than have a painfree knee and easier walking. I would really welcome your views,