RAPseudosubluxation of C2 on C3 in Polytraumatized Children — Prevalence and Significance
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2016, Clinical ImagingCitation Excerpt :It was incidentally observed in 46% of children less than 8 years of age in a study of 160 patients and in 22% of children less than 16 years of age with history of polytrauma in another study of 138 patients [8,9]. In physiologic pseudosubluxation, the posterior cervical line (drawn along the anterior spinous processes of C1 and C3) touches or lies 1 mm anterior to the corresponding C2 spinous process in both flexion and extension [6,9]. If the distance is greater than 2 mm, it indicates the presence of a true injury [6].
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