MRI Shows Disc Herniation With Retrolisthesis. Spasms, Tingling, Weakness In Upper Extremities. Pain In Leg

I've had two failed back surgeries, and I'm fused at L3-4 thru S1. On a recent mri I have disc herniation at L2-3 with retrolisthesis. The mri also showed disc bulging at T10-11,11-12, 12-L1. The mri was of the lumbar spine. I also have a protrusion that can be felt in the mid thoracic area, with symptoms of spasms & tingling. I've also noted an extreme weakness in my upper extremities. My pain management provider suggested an epidural steroid injection, which was denied by workers comp, due to lack of documentation of syptoms, & suggested physical therapy. I'm willing to do that, but on the side of caution, as physical therapy resulted in having to have a second back surgery to fuse me at L3-4. The weights they had me lifting were to heavy, and after my complaints, I was told I should be able to lift that if I wanted to return to work. Shortly after I developed radiculopathy in both legs. I currently have pain that radiates down my left buttock,to the hip and down the left outer side of my leg. What are my options. I've done some research and read about therapy in conjunction with chiropractec care.