What is the test for a plaintiff to prove that she sustained a serious injury in a motor vehicle accident?

Upon this showing, it is incumbent upon the plaintiff to come forward "with an objective medical basis supporting the conclusion that she sustained a serious injury (see Toure v Avis Rent A Car Sys., 98 NY2d 345, 350-351, 774 NE2d 1197, 746 NYS2d 865 [2002])." Baez v. Rahamatali, 6 N.Y.3d 868, 869; 350 N.E.2d 19 [2006]. Plaintiff has done so by raising issues of fact as to both the etiology of the injury to her left knee as well as the persistence of post-surgical limitations.