Interesting.... I was treated for bursitis for two years. Experienced no relief. An MRI confirmed a full-thickness gluteus (gl) medius tear. The only surgical option available to me is a gl maximus transfer. Few orthopedic surgeons in few locations perform this surgery. But for starters, if you have not had an MRI, please do to rule out a tear. Like you I was told there is nothing more we can do for you--"walk with support (cane/walker) for the rest of your life, no one orthopedic surgeon ever mentioned a gl transfer. I've searched the literature, published studies, etc., and there is much available on line regarding information for gl tears and available repair. Read Dr. Whiteside's studies.
Try for an appointment with a spine specialist, not a orthopedic surgeon who will give you many reasons for an MRI not necessary. There is not one orthopedic surgeon in my community (Maryland, Virginia, DC) who could offer the name of a surgeon who is skilled/experienced and offers this surgical option a gl transfer. I am currently working with Dr. R Burnett, Rush Orthopedics, Chicago who does perform gl transfers. I understand your pain, frustration, and agonize with you and your every step, step up, twist and turn that diminishes everyday living not to mention interruptions to trying to sleep. It's hard not to be depressed, wear a smile, and walk around the block without fear of lose of balance. I wish you well.