| Term 
 | Definition 
 
        | Fracture at C6 or C7 spinous process STABLE No neurologic impairment   |  | 
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        | Term 
 
        | Flexion-Teardrop fracture |  | Definition 
 
        | Severe flexion of the cervical spine that causes disruption of posterior ligaments with anterior compression of vertebral body SPINAL CORD INJURY Neurologic impairment  |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Predental space is larger than normal (>3mm for adults, >5mm for children) due to forward movement of C1 on C2 that is usually restricted by the transverse ligament, narrowing the spinal canal |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | hyperextension injury that results in the fracture of posterior elementas (such as pars interarticularis) of the C2: also displaces C2 anterior to C3 |  | 
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        | Term 
 | Definition 
 
        | Flexion distraction injury: posterior elements fractures such as the pedicles, lamina and transverse/spinous processes   Usually T12-L2 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | comminuted vertical fracture through the vertebral body (similar to flexion teardrop, but don't have to damage posterior ligaments) |  | 
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        | Term 
 
        | Anterior compression fracture |  | Definition 
 
        | Compression fracture that progresses when not treated and is common in osteoporotic patients |  | 
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        | Term 
 | Definition 
 
        | Fracture at C2 that can happen at the tip of dens (I), base of odontoid process (II), or through plane that extend through the body of C2 (III-unstable) |  | 
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