De Quervains disease is tenosynovitis of:
Ref. Textbook of Orthopedics, Ebnezar. Page. 378.
 
De Quervains TenoSynovitis

A stenosing tenosynovial inflammation of the 1st dorsal compartment which includes
	
abductor pollicis longus (APL) 
extensor pollicis brevis (EPB) 


Epidemiology
	
Woman > men
30 - 50 years old
Most commonly in the dominant wrist


Pathophysiology
	
Thickening and swelling of extensor retinaculum causes increased tendon friction
NOT considered an inflammatory process


Prognosis
	
Most cases resolve with non-operative management
 High recurrence rate
Abductor pollicis brevis and extensor pollicis longus
Abductor pollicis longus and extensor pollicis brevis
Abductor pollicis longus and extensor carpi radialis brevis
Abductor pollicis brevis and extensor carpi radialis longus