CAMRT Radiography Practice Exam

A fracture of the arch of C2 anterior to the inferior facet is known as:

1. Jefferson fracture

2. Hangman's fracture

3. Odontoid fracture

4. Compression fracture

The correct answer is: Hangman's fracture

A Hangman's fracture specifically refers to a fracture of the C2 vertebra, particularly involving the pars interarticularis, which is located between the inferior and superior articular facets of the vertebra. This type of fracture is often associated with hyperextension injuries of the neck, frequently seen in cases of traumatic hangings or severe whiplash injuries. The reason this answer is correct is that a Hangman's fracture is characterized by the disruption of the bony structures anterior to the inferior facet of C2, making it distinct from other types of cervical spine injuries. In contrast, a Jefferson fracture pertains to an axial loading injury affecting the ring of the C1 vertebra, typically involving multiple fractures of the arch. An odontoid fracture involves the odontoid process (dens) of C2 and is not specifically related to the anterior arch of C2. A compression fracture generally refers to a vertebra that has been compressed usually due to osteoporosis or trauma, and is more about the body of the vertebra collapsing rather than a specific fracture of the arch as described in this question. Hence, the identification of a Hangman's fracture aligns properly with the anatomical description provided.