Hi Justin,

It sounds like the back problem is related to the hamstring problems. You sound like a professional athlete but i am not sure.

What is the physio doing for you?

People often use their hamstrings in a poorly coordinated way. The tenderness that you feel could be the muscles complaining they are overworked.

You mention a back injury and scar tissue preventing you building up muscle in your back and so you can't return to sport. That doesn't sound quite right. Can you elaborate more on this matter?

Lastly, ask your physio if they think the two are related or do they just say "you need more stretching"...

If you respond, i will respond too with my ideas!

Good luck