Description

Magerl et al developed a classification for injuries to the thoracic and lumbar spine using a scheme similar to that used for the AO fracture classification. The Type C fractures involve (a) injury to the anterior and posterior elements together with (b) rotation. The authors are from multiple institutions in Europe and North America.


 

Type C injuries cause complete loss of the tensile strength of the spine. These injuries are unstable in axial torque and may be superimposed on Type A and/or Type B injuries. They result in the highest rate of neurological deficits and require surgical stabilization.

 

Major subtypes:

(1) compression injuries (Type A) with rotation

(2) flexion-distraction injuries (Type B1 and B2) with rotation

(3) hyperextension-shear (Type B3) with rotation

(4) mixed rotation and shear

Major Subtype

Minor Subtype

Subdivider

Classification

Type A with rotation

 

 

C1

 

rotational wedge fracture

 

C1.1

 

rotational split fracture

 

C1.2

 

 

rotational sagittal split fracture

C1.2.1

 

 

rotational coronal split fracture

C1.2.2

 

 

rotational pincer fracture

C1.2.3

 

 

vertebral body separation

C1.2.4

 

rotational burst fractures

 

C1.3

 

 

incomplete rotational burst fracture

C1.3.1

 

 

rotational burst-split fracture

C1.3.2

 

 

complete rotational burst fracture

C1.3.3

Type B with rotation

 

 

C2

 

Type B1 with rotation

 

C2.1

 

 

rotational flexion subluxation

C2.1.1

 

 

rotational flexion subluxation with unilateral articular process fracture

C2.1.2

 

 

unilateral dislocation

C2.1.3

 

 

rotational anterior dislocation with or without fracture of articular processes

C2.1.4

 

 

C2.1.1 or C2.1.2 with Type A fracture

C2.1.5

 

 

C2.1.3 with Type A fracture

C2.1.6

 

 

C2.1.4 with Type A fracture

C2.1.7

 

Type B2 with rotation

 

C2.2

 

 

rotational transverse bicolumnar fracture

C2.2.1

 

 

unilateral flexion spondylolysis with disruption of the disc

C2.2.2

 

 

unilateral flexion spondylolysis with type A fracture

C2.2.3

 

Type B3 with rotation

 

C2.3

 

 

rotational hyper-extension-subluxation with/without fracture of posterior vertebral elements

C2.3.1

 

 

unilateral hyper-extension-spondylolysis

C2.3.2

 

 

posterior dislocation with rotation

C2.3.3

rotational-shear

 

 

C3

 

slice fracture

 

C3.1

 

oblique fracture

 

C3.2

 


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