PAED-0133

A 16-year-old boy is brought to the ER by his friends. He fell off his quad bike while riding it at a high speed. He complains of neck pain and paraesthesia in his limbs. On examination, there are multiple bleeding contusions on the body. There is a handlebar bruise on his chest. And oxygen saturations are low, but heart rate is normal. Which of the following is the most likely causing his shock?