I had some back problems about 7 years ago for various and sundry reasons. L4/L5 They gave me a couple of options and the one I liked the best was exercise. Mine was probably minor compared to most here but for those with minor back problems, invest in a Roman Chair. It is designed to do reverse situps so that your torso hangs over the edge and your back muscles do the work of pulling your torso up to level. I do 25 a day and the doctor stays away, knock on wood. Haven't noticed any back pain in years and I golf frequently.
PS I have some squamous cell removed on a bi yearly basis. Think of it as a briss with you having plenty to spare. :-}
Can you find a link to the Roman Chair? I doubt I'd be allowed to do anything like that now but maybe afterward. It would be nice to be able to get my tummy flattened somewhat again. And it wouldn't hurt my husband either!