减少功能： 由于运动范围有限，打字、抓握物体或扣纽扣等任务变得具有挑战性。 Although normally pain-free, they may cause discomfort or interfere with joint motion. De Quervain's Tenosynovitis - This situation is characterised from the inflammation of the tendons around the thumb facet of the wrist, bringing about discomfort and tenderness. It is often linked to overuse. Carpal Tunnel Syn... https://www.theorthopaedicandpainpractice.com/why-cant-i-straighten-the-tip-of-my-finger/