What is De Quervains stenosing tenosynovitis?
• Tendinitis involving the abductor pollicis longus (APL) and extensor pollicis brevis (EPB) tendons.
• Most frequently described as pain at the base of the thumb.
• APL/EPB tendons form the palmar side of the anatomic snuffbox.
• A positive Finkelstein maneuver supports the diagnosis