The volume of evidence questioning the efficacy of traditional treatment methods for chronic low back pain sufferers is equalled only by that condoning a more biopsychosocial approach to assessment and treatment. Unfortunately literature on this subject is often academic and does little to offer practical advice to clinicians on how they can apply psychosocial principles to practice. This paper briefly explores the reasons behind the increasing number of chronic back pain patients, reviews the psychological models relevant to understanding this client group, and offers basic practical advice on psychosocial assessment and treatment methods.