Most of the time, it arises from a recurring movement or forceful use of your respective finger or thumb. Tendons are fibrous cords that connect muscle mass to bone. Just about every tendon is surrounded by a protecting sheath.  These injuries can also bring on circumstances like Boutonnière Deformity, characterized https://www.theorthopaedicandpainpractice.com/why-cant-i-straighten-the-tip-of-my-finger/