Odontoid fracture

The odontoid process fracture (also known as the PEG or dens fracture) occurs where there is a fracture through the odontoid process of C2.

Pathologic fractures can also occur, e.g. with metastatic involvement.

10–15% of cervical spine fractures. Can occur in older patients with minor trauma, or in younger patients typically following motor vehicle accident (MVA), falls from a height, skiing…

● May be fatal at time of injury, most survivors are intact. Neck pain is common.

● Classification: Anderson & D’Alonzo. Type II (at base) is the most common.

● Treatment: surgery is considered for: Type II if age > 50yrs, Type IIA , or Type II & III if displacement ≥ 5mm or if alignment cannot be maintained with halo.

see Odontoid fracture epidemiology.

see Odontoid fracture classification.

Flexion is the most common mechanism of injury, with resultant anterior displacement of C1 on C2 (atlantoaxial subluxation). Extension only occasionally produces odontoid fractures, usually associated with posterior displacement.

Odontoid fracture clinical features.

see Odontoid fracture diagnosis.

Os odontoideum

Persistent ossiculum terminale

Mach effect

see Odontoid fracture treatment.

see Odontoid fracture outcome.

see Odontoid fracture case series.

  • odontoid_fracture.txt
  • Last modified: 2020/01/23 20:09
  • by administrador