Jefferson fractures of the immature spine. Report of 3 cases.

Jefferson fractures of the immature spine have received little attention in the study of pediatric spinal trauma. Fractures through synchondroses are a possibility in the immature spine, in addition to fractures through osseous portions of the vertebral ring, and they create opportunities for misinterpretation of diagnostic imaging. The authors describe 3 examples of Jefferson fractures in young children. All 3 cases featured fractures through an anterior synchondrosis in association with persistence of the posterior synchondrosis or a fracture of the posterior arch. The possibility of a Jefferson fracture should be considered for any child presenting with neck pain, cervical muscle spasm, or torticollis following a head injury, despite a seemingly normal cervical spine study. Jefferson fractures in young children are probably much more common than previously recognized.