Hi catweazle, so sorry to hear your story.
I was in two accidents 20 and 13 years ago, damaging my spine in both.
It sounds to me like the accident did cause you nasty damage, distress and a lot of ongoing pain and problems, unless you already had a problem in that area, that is in your medical notes.
Even if you had a bit of degeneration to discs, due to normal wear and tear the accident definitely exacerbated the problem and has caused you significant difficulties and pain.
As you accepted a payout it is unlikely you could reopen your case for compensation. It may be worth a phone call though to CAB or a solicitor. Most give at least half hour free consultation.
If it's any consolation to you the surgery involved is very risky and people are often left with even more problems.
You've obviously been down the Pain Clinic route, that tends to be very hit and miss I'm afraid.
So you are left with what you have, physio, painkillers and related medications , accupuncture can help some people, for others it's diddly squat! Be careful with Chiropractors as necks are not a good idea. I asked one locally and he said he'd never touch a badly damaged neck, only a sports type injury, so I was lucky. A friend of mine suffered terribly from a Chiropractor who shouldn't have touched her.
Also be careful of having too many steroid/cortisone injections or pills. They can seriously damage your liver over a fairly short time. The docs don't always tell you this, until your liver is the one affected.
To add to all this you become a 'chronic pain' patient, the worst type of patient to help I'm sorry to say.
I am significantly disabled by my experience and with increasing unremitting pain that just gets worse as they years go by.
I have the choice of various medications/transdermal patches, some I just won't take due to the side effects. Most of us with this problem tend to end up with far less than we'd like in both lifestyle choices and medical help.
I wish I could offer you some more positive help and advice but this is how it is and there are thousands of us out there.
Sadly acceptance of ones situation is the only sane way of going forward.By alterating or changing your lifestyle to match what you can and can't do, using adaptions and aids as time goes by.
I truly hope that for you there is an answer that you can live with and accept.
What I will say is don't give up on asking for help and treatment under the NHS. There may be something or someone out there that can help you if you keep trying.
My very best wishes to you, Fanny Jane.