Well it seems like I am eventually getting somewhere with my dodgy ankle. I have been having problems on and off for years now, and am having physion at the moment, with lots of exercises and acupuncture. I had to attend today for an ultra sound scan of it, because there was a query over a ruptured achilles tendon, brought on by chronic posterior tibial tendonitis. Well it would appear, that the achilles tendon is fine, as is the posterior tibial tendon :s Instead of that I have an extra muscle (accessory muscle apparently) which may be causing the problem, and I have to have an MRI scan. Apparently it is not unusual per se to have extra muscles that you shouldn't have, but to have them in the area I have it, and it to be causing pain and swelling is. The doctor described it as a rare occurrence, which they see about once every 5 to 6 years. The muscle is in a small sheath/compartment of it's own, and becomes inflamed and painful when I walk. The pain apparently due to lack of blood supply to this muscle, which is a bit worrying. This has developed into a bulge over the area where my achilles tendon is, and also down the inner aspect of my ankle. I need to have MRI to confirm it, and then they say they will discuss the options - surgery being a likely option. I am reliably informed that there is a surgeon in Scotland carrying out some research into the condition, and he "opens up the area around the muscle" ! I am not in favour of going to Scotland and letting someone experiment on my ankle There is a possibilty that the soft tissue mass, which appears to be this accessory muscle could be something else all together, and of course reading around as you do, it could something as triviaI as fatty tissue. but I am aware there is a very remote chance of it being some kind of tumour, but I think that is very unlikely indeed. He seemed fairly convinced it was muscle and was showing the other sonographers the different structures, indicating it was muscle.None of them had seen it before. I think he was some kind of Consultant Radiologist who specialises in these type of problems and works with rheumatology. In any case, I suppose I will have to wait and see. I am glad they have possibly found the cause, as I have recently convinced myself I was imagining it, but I am not entirely looking forward to what they suggest they will do about it. Anyone had ankle surgery before - I know I am jumping the gun, but just wondering what to expect if they do decide to remove some of the muscle.