This is the large, infared mat my sister brought me to use when my lower back was in agony after a colonoscopy/endoscopy. I wish I had had it for my hip and foot. A regular heating pad is comforting, but this mat seems to heal.

http://www.amazon.com/Large-Infrared...SC7Q9M0C3Z9H5A

FYI the mat comes in smaller sizes. Also there is a German infared device that might be better for people who have facial CRPS, many reviews mention its efficacy treating a number of ailments.