What is the diagnosis for marked narrowing of l5/s1? what is plan of treatment for such? if all conventional therapies fail? how do studies go from having an untreated l5/s1 with marked narrowing to having a partial transverse s1 lumbarization?

I sense from your question you are looking for conservative recommendations. I am a podiatrist. I have had success treating back pain patients employed by a back surgeon. He fired me because I was helping his pts. Obviously I could not to continue to work for him. Have your doctor or physical therapist measure your limb lengths and if you have a pelvic rotation. Orthotics with appropriate lift