okay this gets away from suspension modifications but believe it or not it this clam exercise has help my hip and lower back pain.
My daughter went to physio and they gave her this exercise.
I do twenty each side every day and it has been more effective then towels stuffed behind my back, rest, losing weight..... anyway worth a try, eh? I will be 66 in April the specialist wanted to fuse my back in three places in 1989, I am not blowing smoke, nobody knows back pain unless they have been there. Good luck!