Atlantodental interval
Updates to Link Attributes
Updates to Article Attributes
Body
was changed:
The atlantodental interval (ADI), as the name suggests, is the horizontal distance between the anterior arch of the atlas and the dens of the axis, used in the diagnosis of atlanto-occipital dissociation injuries and injuries of the atlas and axis.
It is the distance (in mm) between the posterior cortex of the anterior arch of the atlas and the anterior cortex of the dens in the median (midsagittal) plane.
Normal values are:
- <
; 2mm;2mm on plain radiographsand1 although most authors describe <3mm. - <3mm in males and <2.5mm in females on CT 1.
Children can have a normal ADI up to 5mm - <5mm in children.
-<p>The <strong>atlantodental interval (ADI)</strong>, as the name suggests, is the horizontal distance between the anterior arch of the <a title="Atlas (C1)" href="/articles/atlas-c1">atlas</a> and the dens of the <a href="/articles/axis-c2">axis</a>, used in the diagnosis of <a href="/articles/atlanto-occipital-dissociation-injuries">atlanto-occipital dissociation injuries</a> and injuries of the atlas and axis.</p><p>It is the distance (in mm) between the posterior cortex of the anterior arch of the atlas and the anterior cortex of the dens in the median (midsagittal) plane.</p><p>Normal values are < 2mm on plain radiographs and <3mm in males and <2.5mm in females on CT <sup>1</sup>. Children can have a normal ADI up to 5mm.</p>- +<p>The <strong>atlantodental interval (ADI)</strong>, as the name suggests, is the horizontal distance between the anterior arch of the <a href="/articles/atlas-c1">atlas</a> and the dens of the <a href="/articles/axis-c2">axis</a>, used in the diagnosis of <a href="/articles/atlanto-occipital-dissociation-injuries">atlanto-occipital dissociation injuries</a> and injuries of the atlas and axis.</p><p>It is the distance (in mm) between the posterior cortex of the anterior arch of the atlas and the anterior cortex of the dens in the median (midsagittal) plane.</p><p>Normal values are:</p><ul>
- +<li><2mm on plain radiographs <sup>1</sup> although most authors describe <3mm.</li>
- +<li><3mm in males and <2.5mm in females on CT <sup>1</sup>.</li>
- +<li><5mm in children.</li>
- +</ul>
References changed:
- 1. Rojas C, Bertozzi J, Martinez C, Whitlow J. Reassessment of the Craniocervical Junction: Normal Values on CT. AJNR Am J Neuroradiol. 2007;28(9):1819-23. <a href="https://doi.org/10.3174/ajnr.a0660">doi:10.3174/ajnr.a0660</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/17893223">Pubmed</a>
Systems changed:
- Central Nervous System
- Spine
Unable to process the form. Check for errors and try again.