Usually, it emanates from a repeated motion or forceful use of your finger or thumb. Tendons are fibrous cords that attach muscle mass to bone. Each and every tendon is surrounded by a protecting sheath.  For wage and work relevant promises, you can make an appointment with TADM. A lot https://www.theorthopaedicandpainpractice.com/why-cant-i-straighten-the-tip-of-my-finger/