Spontaneous elevation of a ping-pong fracture: case report and review of the literature.

Depressed skull fractures compromise 7-10% of the children admitted to hospital with a head injury. Depressed skull fractures that occur in children younger than 1 year are different from those found in older children. In neonates and infants, a depressed fracture forms an inward buckling of the bones forming a 'cup shape', termed a 'ping-pong fracture'. In neonates, spontaneous elevation of a ping-pong fracture after birth trauma is well documented. However, in infants, spontaneous elevation of a ping-pong fracture following head injury is extremely rare. Here, we present the case of an 11-month-old child, in whom a ping-pong fracture was spontaneously elevated within 2 h. In addition, the relevant literature is reviewed and discussed.