That is a tough one! Maybe you could ride a stationary bike? I would suggest going to a variety of doctors for a pathway. From what you wrote, you have no “hope“ going on. You didn’t mention your age so my recommendations might not be that appropriate, however, I have visited pain management,, kinesiology, doctors, rehabilitation doctors, PT, and rehab. I have done acupuncture, (chiropractic I don’t recommend.) Botox, and every other modality. The things I found most effective are trying to rebuild the structure to my body, which for me at 68 means taking bioidentical hormone replacement and the bone medication’s for a few years. If you are not in motion or active, your body is just gonna atrophy as well as degenerate. So you’re gonna have to talk to a few doctors and get a plan that can keep your circulation going or you’re gonna have more necrosis. In the meantime, I recommend MFR. I pay out of my pocket as well as use what Medicare will cover and I like the local guy who doesn’t take insurance best. He helps breakdown the myofascial muscles fascia which is glued together, and I have more movement and less pain and my body is more usable. I go twice a month and it’s been almost a year and although it’s very painful for me, I find that it’s really working and I am much more mobile.. The inner workings of my body get much more circulation and toxins are expelled better. I get the impression I am going to be doing this for the rest of my life (I’m 68) I’ve had two total hip replacement lumbar fusion and two cervical fusion with rods, but I am really active with all of that. And I push my doctors as hard as I possibly can to make them work for me so I can be my best. I wish you good luck because I know you’re in a difficult situation.