Low Back Pain: Tips on Pain Relief and Prevention
Internet URL
http://familydoctor.org/online/famdocen/home/common/pain/treatment/117.html 
Sponsoring Agency
American Academy of Family Physicians
Description
Many things can cause low back injuries--muscle strain or spasm, sprains of ligaments (which attach bone to bone), joint problems or a "slipped disk." The most common cause is using your back muscles in activities you're not used to, like lifting heavy furniture or doing yard work. Learn tips to relieve and prevent back pain.