Low back pain. Usually what happens if you have an initial episode, for most people – 90% of people, it usually doesn’t last that long. So even though you have LBP you aren’t tortured by it month after month. Most people, 90%, recover within a month or so. However many people will have recurrences. There are a few unfortunates in whom LBP is very persistent and the figures are usually that 7-10% have persistent back pain and about 3% of the total people who get low back pain are really chronically disabled. And it is this 10% who basically count for the most of the cost related to LBP. Obviously, it has a major impact on quality of life and health care expenditures.