PREVIEW
A painful shoulder can present diagnostic challenges for the clinician because of the complexity of the structures involved. Fortunately, most shoulder problems seen in the primary care setting are caused by relatively few conditions. In this article, Drs McMahon and Sallis review common shoulder problems, including impingement syndrome, shoulder stiffness, glenohumeral instability, acromioclavicular joint problems, and glenohumeral osteoarthritis. In addition, they outline treatment options and provide information about when referral is needed.