The thumb is one of five digits on each hand, but it has a different shape and function from the other digits. However, most medical guides refer to the thumb as a finger. Also known as the pollex or ...
De Quervain tenosynovitis is pain and swelling in the tendons around your thumb. Specifically, it affects the tendons of two muscles called abductor pollicis longus and extensor pollicis brevis. De ...