We need to discuss your symptoms and deficits. Where do you have pain? If you have pain in neck and arm- what is the percentage of each? When does the pain occur? Do you have weakness? If so, where? How did the symptoms develop? Do you have balance problems?
Where were the steroid injections performed and what were the results? Did you get temporary relief in the first three hours from the injection? If so, where was the relief- neck or arm or both?
As you can see, to understand what structures are causing pain, there needs to be more identifying information.