I had two cases of sciatic pain down my right leg (L5/S1). The first was in 1998 and it DID resolve with physical therapy. However, it can also resolve spontaneously, so who really knows?
The pain comes back again early 2000, and I’m in a wheelchair all the time because the pain was so bad. Fortunately, I have a good nurse practitioner (I tend to like them over MDs, especially with HMO coverage) and she sent me to a surgeon who recommended steroids.
I had three treatments: the first, no relief. The second, the pain relief was measurable, but it didn’t resolve and I still couldn’t walk very far. I finally asked the doctor at the steroid clinic if the third shot would let me walk again, and he said “sorry, but no. I don’t think this will help 100%.” In other words, the steroids help reduce the nerve irritation but they don’t do much for the cause of the irritation.
So I finally had a microdiscetomy done the summer of 2000. The first time I had sciatica I had a bulging disk impinging on my nerve; this time the bulge had broken off and calicified to the bone, providing permanent irritation to the nerve. Nothing short of breaking it off would’ve worked, and that’s precisely what my surgeon did. But I got to admit I’m lucky; I work for one of the best research medical schools in the country so my surgeon IS the best neurosurgeon in the country (and even has a sandwich named after him, go figure). So if you can, make sure you research your surgeon beforehand, make sure he or she is top-notch. At any rate, my surgeon said “you’re gonna hate me for a week, and then after that I’ll be your best friend.” Hell, I didn’t even hate him, but after a week the first time I walked down my neighborhood street with absolutely no pain I was ready to canonize the dude.
In contrast I have a friend whose back looks like a perfect Klingon make-up job, she’s had that many surgeries. She’s also now in a wheelchair permanently, and lives with chronic pain. However, in contrast, her back problems are incredibly complex, involve several disks, and include a degenerative disease.
I’d say definitely get evaluated by a surgeon and listen carefully to the risks. Ask him/her directly what’s the percentage chance that you’ll be fully out of pain after the surgery. If you do have the surgery, follow the aftercare instructions to the letter. You don’t want to f*ck up your back again, as I’m sure you well understand. 