A 10yo was a rear seat passenger in a high-speed MVA, belted only with a lapbelt, and had a hyperflexion injury mechanism during impact. The patient cannot move his legs, and does not have lower extremity sensation to light touch or temperature sensation, but does have intact proprioception and vibration sense. What is the injury?

  1. Anterior cord syndrome
  2. Brown-Sequard cord syndrome
  3. Central cord syndrome
  4. Chance fracture