Hello, I am one year post op of Lumbar fusion L4-L5 , L5-S1. Having extreme pain, was told by my Surgeons PA that I had Sacroiliitas. Had SI Joint injections which were unsuccessful. Have had MRI’s done since and want to know if anyone has had a partial encasement of nerve roots at L4-L5 and L5-S1? What treatment is done for this? So far I have been prescribed Gabapentin for nerve pain. Any information/advice would be greatly appreciated.