Evidence-Based Medicine: Thumb Basal Joint Arthritis.

Learning Objectives: After studying this article, the participant should be able to: 1. Assess the patient's history, clinical examination, and radiographic findings to diagnose and stage basilar joint arthritis. 2. Recall the cause and epidemiology of the condition. 3. Formulate a management plan including nonoperative management, and evaluate the candidacy for surgical treatment. 4. Understand the rationale for the various surgical options available (including rehabilitation), their potential complications, and the evidence related to outcomes.

Summary: This article has been prepared to accompany practice-based assessment with ongoing surgical education for the Maintenance of Certification for the American Board of Plastic Surgery. It is designed for clinicians to analyze and structure their care of a patient with arthritis of the trapeziometacarpal joint.