English 
This video in the Ortho for Primary Care series addresses basal joint arthritis, also known as thumb arthritis, a common source of pain and functional limitation in adults. We review the anatomy of the thumb base, the typical progression of arthritis in this joint, and the symptoms that often lead patients to seek medical attention.
Created for primary care providers, medical students, and healthcare professionals, this educational content highlights diagnostic considerations, conservative treatment options, and indications for referral to an orthopedic specialist. The goal is to provide clear, practical guidance that helps clinicians manage thumb arthritis effectively in a primary care setting.
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