Definition of vendetta. 1  1 : blood feud. 2  2 : an often prolonged series of retaliatory, vengeful, or hostile acts or exchange of such acts waged a personal vendetta against those who opposed his nomination.
A strain is a twist, pull and/or tear of a muscle and/or tendon. Tendons are fibrous cords of tissue that attach muscles to bone. Strains and sprains are among the most common sports injuries.
de Quervain's Tendonitis results from inflammation or constriction of the tendons of the muscles of the thumb at the point where they pass into the wrist. In many cases both tenosynovitis and tendonitis occur, a condition known as tendinopathy.