I am sorry to hear about your suffering. Hydromorphone, as all opiates, causes greater toleration over the course of time, plus there are some side effects that can be bothering you - https://www.nlm.nih.gov/medlineplus/...s/a682013.html
Talking about long-term pain relief, I've heard some good things about this drug - https://rxed.eu/en/s/Suboxone/ Buprenorphine is said to be better for your overall functioning, because it is a partial opioid receptor agonist. At the same time, there were some negative opinions as well. It probably will not eliminate all of the pain, so you would have to do some tolerating. And of course, you should talk about this with your doctor and decide it together.
Oh, and as far as I understand, all the action comes from buprenorphine, naloxone is there only as a safeguard against mainlining. So other buprenorphine-containing medications should have pretty much the same effect.