Nonoperative treatment for De Quervain syndrome involves immobilization with which device?

Study for the NBCOT Hand Injuries and Intervention Test. Prepare with flashcards and multiple choice questions, each question offers hints and explanations. Get ready for success!

De Quervain’s tenosynovitis improves when the thumb tendons (APL and EPB) are rested by immobilizing both the wrist and thumb. A forearm-based thumb spica splint with the wrist kept in a neutral position and the thumb radially abducted directly limits movement through the first dorsal compartment, reducing tendon gliding friction and inflammation. Keeping the thumb in abduction prevents impingement within the compartment, while the neutral wrist positions the tendons so they’re not stretched or irritated. This immobilization is typically worn for about three weeks to allow inflammation to subside and symptoms to improve. Other options don’t adequately rest the involved tendons: a short arm cast with the wrist flexed alters tendon positions unfavorably; an elbow extension brace doesn’t immobilize the thumb/wrist; and no immobilization fails to reduce tendon movement and pain.