Dequervain's tenosynovitis is a stenosing tenosynovitis of the: (A) Tendo Achilles, (B) Iliolumbar ligament, (C) First extensor compartment of the wrist, (D) Median nerve
Answer is C. Dequervain's tenosynovitis is a stenosing tenosynovitis of the first exten­sor compartment at the wrist comprising the tendons of extensor pollicis brevis and Abductor pollicis longus.