I am always hopeful that lumbar facet injections can give relief of lower back pain even though facet origin pain occurs only about 10% of the time. The other 90% of lumbar spine pain origin is disc and nerve.
Shoulder pain normally originates from the neck (cervical radiculopathy) or from rotator cuff arthrosis. A simple examination and even an in-office injection can differentiate these two disorders.
The fact that you need 60mg of Oxycontin to control your pain concerns me. You need a thorough evaluation by a spine surgeon to get your pain under control.
Dr. Corenman