I have osteoarthritis is both knees. They are both severe. On my last scan, my left knee was shown to have Hoffas disease. My own GP had never heard of it and I believe it is a rare condition. I think I had a flare up of it last year (before I knew I had it). I had a few weeks where I really struggled to walk and I was shouting out in pain during the night. This past few days, I think I am again having a flare up of hoffas. I know little about it, there is not much on the internet and most of it is for people who have got it through running. Last night, I could hardly walk. I couldn't straighten my leg, if I tried the pain was through the roof. Eventually, I managed to get into bed - at rest it is easier. Since getting up this morning I am struggling in the same way. I have had to walk with two sticks, the pain is unbearable. I've taken paracetamol and ibruprofen. I cannot imagine this is just the arthritis as it came on suddenly and severely. I am currently using a TENS machine to try and get some relief. Can you offer any advice and managing the pain? I appreciate it may not be Hoffas and could be something else that has flared up. I would appreciate any help. My own GP is away until Friday.