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.
Quadricep strains are of three types; A mild or (grade I) strain, which is a slightly pulled muscle without tearing of muscle or tendon fibers. There is no loss of strength. A moderate or (grade II) strain, which is a tearing of fibers in a muscle or tendon or at the attachment to the bone.