Ab Exercises With Hurt Back?

So basically I hurt my back 2 months ago and because of it my lower body and back is extremely stiff. I've been stretching but it usualy hurts my back. I lowered by body fat to 8% but my abs don't show like they used to because I've been inactive for 2 months. Are there exercises I can do that don't involve my back?
Ab Exercises With Hurt Back?
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