Children can have back pain from curvature of the spine (scoliosis), as can adults, but when older adults have back pain it is often from lack of exercise and weak muscles or obesity. I am always puzzled when I am told about individuals who belong to HMOs and don't insist on seeing an orthopedist. I know one individual who is bright, has an advanced degree, and yet will see a physical therapist, but has not made any effort to see an orthopedist. In the past, a P.T could not see a patient with back pain without an Rx from an orthopedist. I am not sure this is still true in any state. I remember one man who was being treated by a P.T. for back pain that was thought to be due to shingles or some kind of nerve problem. His pain turned out to cancer of the spine and he died in his fifties. I am not sure he ever saw an orthopedic surgeon and yet he could have afforded the best of care.
If you decide to see an orthopedist either for a child, teenager, or as an adult, it is important to be sure the orthopedist is board-certified and I would also want to be sure he or she is an M.D. and not a D.O. or a doctor of neuropathic medicine. There are many people these days who call themselves doctor, but they are not M.D.s or even osteopaths. If you put a doctor's name in Goggle you should be able to get their training and if they are board-certified and are an M.D. or something else.