Specifically, it affects the tendons of two muscles called abductor pollicis longus and extensor pollicis brevis. De Quervain tenosynovitis was named after Swiss surgeon Fritz de Quervain.

Examining the aye-aye specimen, Hartstone-Rose and colleagues began to trace the route of a muscle called the abductor pollicis longus down into the forearm. This is one that, in humans ...

Stenosing tendovaginitis is due to a thickening of the fibrous sheath that covers the tendons and the synovial sheaths of the abductor pollicis longus and the extensor pollicis brevis as they pass ...