Extensor tendonitis is an inflammatory condition of the tendons on the back of the hands or the top of the feet. These tendons attach to muscles that straighten your fingers and lift up your toes and ...

You have extensor tendons in your hands and feet, which are critical for finger, toe, wrist, and ankle movement. Like many other forms of tendonitis, extensor tendonitis tends to happen in people who ...

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 ...