Vertebral Column Injury (specific injuries)
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Powers ratio
Wachenheim's
line
- drawn down posterior surface of clivus and its inferior extension should barely touch posterior
aspect of odontoid tip
;
this relationship does not change
in flexion and extension
if
this line runs behind odontoid
, posterior subluxation
has occurred and vice versa
;
Powers
ratio > 1 (anterior subluxation)
Powers
ratio
= BC/OA
BC - distance from basion to midvertical portion of posterior
laminar line of atlas
;
OA - distance from opisthion to midvertical portion of posterior surface of anterior ring of atlas.
Prevertebral
soft
tissue swelling
(70% patients)
Directory:
TrS.%20Spinal%20trauma
TrS.%20Spinal%20trauma -> Vertebral Column Injury (specific injuries)
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