Low-back pain

Low-back pain is a common disorder involving the muscles, nerves and bones of the back. Pain can vary from a dull constant ache to a sudden sharp feeling. Low-back pain is usually classified by duration as acute (pain lasting less than six weeks), sub-chronic (six to 12 weeks) or chronic (more than 12 weeks). IWH research looks at the occupational risk factors for back pain, how to treat and manage it, and prognostic factors related to recovery and return to work.