Hi, Thanks for writing in. Your situation needs a more professional approach than taking out all the hardware inserted during surgery and replacing it with cadaver bone. The bone we have within us is a living tissue though it is hard and stronger than other tissues. This is because of calcium deposition and there is regular exchange of minerals between the bone and other tissues. The bone also gets its blood supply and remains alive. Therefore please do not consider cadaver bone replacement for yourself. The problem with two cages and its displacement at operated site requires proper management. Back fusion surgeries might not provide a good level of pain relief in some patients. Though the pressure on nerve roots at strategic locations seems to be relieved by doing surgical procedure, the patient might often complain severe lower back pain even after surgery. This happens in about 20 to 40 percent of patients and the reason is that the affected nerve roots are still under pressure in areas other than where surgical manipulation has been done. If laser is not an option for you then please discuss new methods like radiofrequency ablation and how effective it will work for you. The problem for your extended suffering was the infection that unfortunately developed in the operated site. Now that it is cured, healing should occur fast. Wishing you the best for hip surgery.