When I was 19 I was working construction. We were roofing a 2 story that day, I was hauling bundles of asphalt shingles up a ladder on to staging, dumping them off on the roof. The staging was on pump jacks and consisted of doubled up 2x12 plank. About mid morning I hauled a bundle up, walked out on the staging and it broke out from under me. I landed on the uneven, yet to be backfilled ground by the foundation, bundle still on my shoulder. I dropped the bundle, checked myself out, seemed to be okay. I carried a few more bundles and my back started to get sore. I spent the rest of the day doing other stuff. The next morning I could hardly set up in bed my back hurt so much. I took some aspirin and it helped but still hurt. I went to the local chiropractor. He had me lay flat on the patient table, measured my legs. One leg was 3/4" longer than the other! He had me contort into various positions and he would gently give a push or a nudge my shoulders to snap various vertebra in my back, about 8 different times. It was painless. I was amazed this frail little 125lb doctor could snap me so easily, I weighed about 210lbs of muscle at the time. Anyway ... one visit and a day or two of rest and I was as good as new! Never had to go back for more. So ... for structural issues I highly recommend a good chiropractor.