I had Plantar Fasciitis last year really badly, not only do I need 2 knee replacements but I was in agony due to inflamed arthritis in both feet as well and we were due to go on holiday, I thought of cancelling as I could hardly walk then a friend suggested I visited her Private podiatrist. I went and paid for him to do an ultra sound, he diagnosed Plantar and suggested I have a steroid injection under controlled ultra sound the following day as it was so swollen. I must admit I was nervous but he gave me an anaesthetic Injection first and allowed the time for it to work and I never looked back, it was agony the first 24 hours after the anaesthetic wore off but paracetamol and an ice pack helped but after a week it was brilliant, well worth the money (around £150) for it to heal up in a couple of weeks as opposed to the 2 years and loads of physio (waste of time) and variety of insoles my husband had to put up with when he had it. I wouldn’t think twice in either of us going to the Foot clinic again for the treatment I had instead of years of putting up with that pain again, maybe you should look into it?