$comminuted odontoid fracture type 1$

$comminuted odontoid fracture type 1$

The anterior screw fixation now is the most widely used technique for type II odontoid fracture with anterior superior to posterior inferior fracture line.

$comminuted odontoid fracture type 1$

4 At present, the surgical methods of odontoid fractures are mainly divided into two types: anterior approach and posterior approach. 3 In simple type II odontoid fracture, the nonunion rate of conservative treatment is as high as 50%–80%, which means surgical treatment is necessary. While type I and III odontoid fractures are generally treated conservatively, the treatment of type II odontoid fractures is still controversial. Since Anderson and D'Alonzo classified odontoid fractures into three types (type I involving the tip, type II involving the neck, type III involving the body) in 1974, this standard has been adopted worldwide. The main function of the atlantoaxial joint is axial rotation, and 50% of the rotation of the head and neck is mainly achieved through the axial rotation of the atlantoaxial joint. 1 Odontoid fractures undermine the stability and function of the atlantoaxial joint. With the increase of traffic injury and height falling injury, the incidence of odontoid fractures has increased in recent years, which accounts for 9%–19% of adult spine fractures.

$comminuted odontoid fracture type 1$

Comminuted odontoid fracture type 1