Ordered that the order is reversed, on the law, with one bill of costs to the appellants, the motion and the cross motion are granted, the complaint is dismissed insofar as asserted against the appellants, and the action against the remaining defendants is severed.
The defendants made a prima facie showing that neither of the infant plaintiffs John Vallejo, Jr., and Vanessa Vallejo (hereinafter the plaintiffs) sustained a serious injury within the meaning of Insurance Law § 5102 (d) ( see Toure v. Avis Rent A Car Sys., 98 NY2d 345; Gaddy v. Eyler, 79 NY2d 955). In opposition, the plaintiffs' treating physician failed to provide any explanation regarding the nearly 4½-year gap between the date of the plaintiffs' initial treatments and the date of their subsequent examinations ( see Pommells v. Perez, 4 NY3d 566; Mendoza v. Whitmire, 6 AD3d 675; Jimenez v. Kambli, 272 AD2d 581, 582; Smith v. Askew, 264 AD2d 834). In addition, the plaintiffs' treating physician failed to set forth the objective tests he performed to arrive at his conclusions regarding the plaintiffs' alleged limitations of motion ( see Kauderer v. Penta, 261 AD2d 365, 366). Further, the plaintiffs' treating physician impermissibly relied upon unsworn medical findings of other doctors ( see Mahoney v. Zerillo, 6 AD3d 403; Jimenez v. Kambli, supra at 582). Accordingly, the plaintiffs failed to raise a triable issue of fact, and the Supreme Court should have granted summary judgment in favor of the appellants.