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11 Cards in this Set
- Front
- Back
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What is the most common reason for a missed cervical spine injury?
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Inadequate visualization of involved levels
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At which two levels are injuries most often missed?
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Cervicothoracic junction
Atlantooccipital junction |
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In an awake, alert patient without neck symptoms, what is required for C-spine clearance?
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Clinical exam only
No films required |
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Compare with a patient with neck pain or neurologic deficits?
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Three views of cervical spine with or without computed tomography (CT)
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What is the normal atlantodens
interval (ADI) in adults and in children? |
Adults: <3.5 mm
Children: <4.0 mm |
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What are the normal and unstable values of a lateral mass overhang on an open mouth view? What is the clinical significance?
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Normal = 0 mm overhang
Unstable = .6.9 mm Relevant for Jefferson fracture |
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What are the two White/Panjabi instability criteria for subaxial C-spine on flexion-extension films?
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Sagittal translation >3.5 mm or 20%
Sagittal rotation >20 degrees |
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. . . on resting films?
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Sagittal translation > 3.5 mm or 20%
Relative sagittal angulation >11 degrees |
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On a pediatric lateral C-spine film, what is the normal C2 retropharyngeal space? Retropharyngeal space?
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<6 mm retropharyngeal
<14 mm retrotracheal |
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What level is most commonly involved in pseudosubluxation? What is its significance?
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C2 on C3
May be a normal finding in children |
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What is the key radiographic landmark when evaluating for pseudosubluxation?
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Check spinolaminar line
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