Mine were/are herniated at L2-L3, L4-L5. Nerve function as measured via EMG was to the point where the doctor was suprised I could use the leg at all, he said any other patient would be non-mobile. Nerve was pretty much not firing from lumbar region to big toe in left leg. Couldn't walk for more than a mile without servere issues (like, couldn't move the left leg).
Decompression on the DRX-9000, followed up with PT (strengthen core, hip mobility), sled dregs with sled attached to power belt only, and reverse hyper: 11 months later, I'm back on track. DL 515x3 last week, Atlas Stones 310x3, PR on axle press, and hiked 6 miles on Sunday. Hope to compete this summer (Strongman), so training is gearing up full bore.
Never got a follow-up MRI. Don't need it. I'm taking Lyrica, that's the only "pain" med these days. Gone are the days of Oxy's, thankfully.