Slough has been the word of the past two weeks – not as in the town in which The Office is set or on which John Betjeman exhorted the friendly bombs to fall – but as in a deep swampy area; the layer of dead tissue that covers the wound bed; and deep despair.  The process of getting rid of the slough in my very deep and very horrible wound is taking a painfully long time and if it weren’t for the kindness, expertise and good humour of the rehab centre staff and the fact that I just can’t help being fascinated by the wound healing process and all the different dressings and methods that they are trying, I would be feeling a lot more despondent than I am.