Can a lack of internal hip rotation cause tight hamstrings?

Hello,

My problem is tight hamstrings, so i'm trying to solve this problem. Hamstring stretches make me feel unstable so i think they are tight already. I HAVE A KNOT LEFT LOWER BACK FROM PAST INJURY, but no real pain.

I've been making alot of progress with my lordosis/anterior knee pain after doing various exercises.

So basically i now have decent external hip rotation, but seing as i have never done any stretches for gaining internal rotation, i think i may be tight here.

So i have one simple question : Will the stretch below give me some hamstring length? (or at least not hurt my lordosis/APT condition)

Plus any other advice for gaining some hamstring length and stride much appreciated!



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Thanks.