Most of the time, it originates from a recurring motion or forceful use of your finger or thumb. Tendons are fibrous cords that attach muscle to bone. Each and every tendon is surrounded by a protecting sheath.  Splinting is the 1st-line treatment for a mallet finger. The aim is to https://www.theorthopaedicandpainpractice.com/why-cant-i-straighten-the-tip-of-my-finger/