Clinical and diagnostic tests for shoulder disorders: a critical review.

The shoulder is one of the most complex joints in the human body and, as such, presents an evaluation and diagnostic challenge. The first steps in its evaluation are obtaining an accurate history and physical examination and evaluating conventional radiography. The use of other imaging modalities (eg, ultrasound, magnetic resonance imaging and computed tomography) should be based on the type of additional information needed. The goals of this study were to review the current limitations of evidence-based medicine with regard to shoulder examination and to assess the rationale for and against the use of diagnostic physical examination tests.