EVERYONE wants to avoid back trouble, but surprisingly few of us manage to escape it. Up to 80 percent of Americans experience back pain at some point in their lives, and each year 15 percent of all adults are treated for such problems as herniated discs, spinal stenosis or lumbar pain.

But back pain is notoriously difficult, and expensive, to remedy.

“The treatments are varied, and we don’t have great science showing what works best for particular patients,” said Brook I. Martin, an instructor of orthopedic surgery at Dartmouth Medical School. “There are questions about the safety and efficacy of a surprising number of therapies, including some types of surgery.”

Those with back pain inevitably end up with higher overall medical costs than those without, studies suggest. Dr. Martin has found that patients with back pain spend about $7,000 annually on health care, while people without back pain spend just $4,000 a year. (Insurers will pay the majority of these costs, but patients often bear some of these expenses in the form of insurance co-payments and deductibles.) These estimates don’t include costs for lost work days or diminished productivity.

Some back problems, of course, can’t be avoided. Over time, spinal vertebrae naturally degenerate and spinal facets become inflamed, causing stress and discomfort.