Most of the time, it arises from a repeated movement or forceful use within your finger or thumb. Tendons are fibrous cords that attach muscle mass to bone. Each individual tendon is surrounded by a protective sheath.  Symptoms may well vary in intensity and presence, with regards to the severity https://www.theorthopaedicandpainpractice.com/why-cant-i-straighten-the-tip-of-my-finger/