What is meaning of annular tear in L-5 and protruding diac?

All I know is I've been having very bad back. It's a big major disabling problem. Docs tried everything -- physical therapy, meds, injections , but the stubborn back issues still remain unresolved. Tried Advil and Tylenol also but no use. I'm so tender in lower back. My question is what's L-5... show more All I know is I've been having very bad back. It's a big major disabling problem. Docs tried everything -- physical therapy, meds, injections , but the stubborn back issues still remain unresolved.

Tried Advil and Tylenol also but no use. I'm so tender in lower back.

My question is what's L-5 meaning? And how to get this nuisance cured permanently?
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