My daughter tried HBOT. She had 40 dives at different depths. It helped a little with her pain but she has some great progress in ROM. She started on crutches and at 20 dives she did not need them. Helped her her color (RSD both lower legs) helped her sleep better and had more energy. Now with the weather change she is in a flare but we are hoping it won't last long. Good luck to you if you try it!!!