Low Back Pain:
Low back pain is common. The main cause for low back pain is a strain of the muscles, or other soft structures (eg ligaments and tendons) connected to the back bones (vertebrae). Sometimes it is the cushion between the bones (intervertebral disc) which is strained, and which bulges out (herniates) and presses on the nearby nerves (as in sciatica).
Exactly what is injured varies from person to person, but you may also get differing theories depending on whom you ask. Thus the poor sufferer may become confused and worried.
Although the experts may not agree on what is causing the problem, there is a surprising amount of agreement on how best to improve the situation.