Physical Examination and Radiographic Staging of Thumb Carpometacarpal Arthritis.

This article reviews the key components of a complete history and physical examination for a patient presenting with thumb pain. The history should include the location and severity of pain, alleviating and exacerbating factors, and impact of disability. Physical examination consists of joint palpation; assessment for laxity or stiffness; inspection for swelling, subluxation, or deformity; and provocative maneuvers. Further workup includes plain radiographs with possible dedicated thumb views. Last, we review the Eaton-Littler classification system, a commonly used radiographic grading system, and some of its limitations.