A serious injury is defined under New York State law as “death; dismemberment; significant disfigurement; fracture; loss of a fetus; permanent loss of use of a body organ, member, function, or system; permanent consequential limitation of use of a body organ or member; significant limitation of use of a body function or system; or a medically determined injury or impairment of a non-permanent nature which prevents the injured person from performing substantially all of the material acts which constitute such person’s usual and customary daily activities for not less than ninety days during the 180 days immediately following the occurrence of the injury or impairment.” (NY ISP §5102(d))