Oh wow that's a long time in the hospital :-( I have/had osteomyelitis in my mid back (T5-T6), it ate some of the bone in my back, which caused T7-T8-T9 herniated discs, which is the main source of my pain now. I started having back pain in the beginning of October 2015, was finally diagnosed early March 2016. I luckily was not hospitalized for it, had a PICC line for 8 weeks, pushing Vancomycin 2 times a day myself. I have been to just about every type of medical provider, specialist, including Chiropractor, Massage Therapist, Acupuncturist, Physical Therapist, etc. I have tried just about everything over the counter, meds that were prescribed, 3 different types of pain patches, rubs, etc. I'm not a medical professional, I'm just letting you know what I have tried, (right now my tolerance to medications/herbs, etc is VERY, VERY high, but here are some suggestions:
~ China-gel, it’s a natural herbal formula, grease-less therapeutic gel that incorporates modern technology with the ancient pain relieving concepts of Chinese medicine. (Topical pain cream, found online) This has been the only thing that I could actually feel go deeper in the skin, and get some type of relief.
~Kratom, it's a tropical evergreen tree in the coffee family. It has been said to help with a number of ailments: musculoskeletal pain, mood enhancement, anxiety, etc (It can be found online or if you have smoke shops nearby, also keep in mind there are some countries where it is not legal. A simple web search will help you) Dosage info is found online, as well as the different ways to consume it: capsules, tea, mix in with milk or a shake, etc. I did not have any negative or positive sign/symptoms.
~CBD (Cannabidiol) It is one of at least 113 active cannabinoids identified in cannabis (Keep in mind this might also not be legal in some countries, research online) It comes in topical cream, edibles, patch and a few other ways. I tried a couple patches, some edibles and smoked some. I did not have any negative or positive signs/symptoms.
Vitamins/Supplements: Vitamin D, Vitamin K2 MK-7, Turmeric and/or Curcumin
I have been prescribed: Gabapentin, Nortriptyline, Pregabalin (Lyrica), Amitriptyline, Diazepam, Aripazole, Cyclobenzaprine, Lidocaine patches, Fentanyl patches, Flector patches, Hydrocodone-Acetaminophen.
OK, sorry such a long response lol, I need to get back to work, best of luck if you research more :-)