By the radiologist’s description, “left lateral recess narrowing and disc contact on the descending left S1 nerve root”, it sounds like a redo surgery at this level could be helpful. I must remind you that radiologists can describe things differently than a spine surgeon so collaboration with a spine surgeon should be taken.
A selective nerve root block would be helpful to insure the root is the cause of your symptoms. See:
https://neckandback.com/treatments/epidural-injections-and-selective-nerve-root-blocks-diagnostic-and-therapeutic/
https://neckandback.com/treatments/diagnostic-vs-therapeutic-injections/
https://neckandback.com/treatments/pain-diary-instructions-for-spinal-injections/
Dr. Corenman