De Quervain syndrome involves tenosynovitis of tendons in which dorsal compartment?

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Multiple Choice

De Quervain syndrome involves tenosynovitis of tendons in which dorsal compartment?

De Quervain syndrome is tenosynovitis that involves the tendons in the first dorsal (thumb) compartment of the wrist, where the abductor pollicis longus and extensor pollicis brevis pass. Inflammation and sheath thickening in this area impede tendon gliding, causing pain at the radial side of the wrist near the base of the thumb, especially with grasping or thumb movements. A classic sign is the Finkelstein test, which reproduces the pain by tucking the thumb in the palm and ulnarly deviating the wrist. The other dorsal compartments contain different tendons (second compartment with ECRL/ECRB, third with EPL, fourth with extensor digitorum and extensor indicis) and are not involved in De Quervain, which is why the first dorsal compartment is the correct answer.

De Quervain syndrome is tenosynovitis that involves the tendons in the first dorsal (thumb) compartment of the wrist, where the abductor pollicis longus and extensor pollicis brevis pass. Inflammation and sheath thickening in this area impede tendon gliding, causing pain at the radial side of the wrist near the base of the thumb, especially with grasping or thumb movements. A classic sign is the Finkelstein test, which reproduces the pain by tucking the thumb in the palm and ulnarly deviating the wrist. The other dorsal compartments contain different tendons (second compartment with ECRL/ECRB, third with EPL, fourth with extensor digitorum and extensor indicis) and are not involved in De Quervain, which is why the first dorsal compartment is the correct answer.

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