Atlanto-occipital dissociation injuries | Radiology Reference Article ...
The tectorial membrane and alar ligaments provide most of the stability to the atlanto-occipital joint, and injury to these ligaments results in instability due to low inherent osseous stability 3. The Traynelis classificationdescribes injuries according to the displacement of the occipital condyles relative to the atlas. The AO … 展开
The key to the diagnosis, in addition to identifying gross disruption of the normal alignment of the atlanto-occipital joint, hinges on using a number of lines on the lateral … 展开
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Reassessment of the Craniocervical Junction: Normal …
Injuries to the craniocervical region can be subtle and impossible to detect on a radiograph of the lateral cervical spine. 1 A recent study has demonstrated that standard cervical spine radiographs are inadequate to fully evaluate the …
Imaging of Atlanto-Occipital and Atlantoaxial …
2015年11月12日 · The imaging findings of important craniocervical junction injuries, such as atlanto-occipital dissociation, occipital condyle fractures, atlas fractures with transverse ligament rupture, atlantoaxi...
Reference values of four measures of craniocervical stability using ...
2023年1月30日 · To establish reference ranges for four most commonly used diagnostic measures of craniocervical instability (CCI) in three cervical sagittal positions. This …
Radiologic Spectrum of Craniocervical Distraction Injuries
2000年10月1日 · Magnetic resonance (MR) imaging of the cervical spine with fat-suppressed gradient-echo T2-weighted or short-inversion-time inversion recovery sequences can …
Craniovertebral junction: normal anatomy, craniometry, and …
1994年3月1日 · Surgical Management of Chiari Malformation Type I and Instability of the Craniocervical Junction Based on Its Pathogenesis and Classification
Craniocervical Measurements – Radiology.World
A basion-dens distance of >12 mm on radiographs and >8.5 mm on CT is suggestive of craniocervical instability. The Powers ratio is the ratio of the distance between the basion and the posterior spinolaminar line of C1 (yellow …
Clinical and Radiological Clues of Traumatic Craniocervical …
2021年12月31日 · MRI clearly described several findings indicating occipitoatlantal instability. The 8 patients with normal values of ADI (atlantodens interval interval) demonstrated atlantoaxial …
The craniocervical junction is a complex anatomical region that extends from the occiput to the second cervical vertebra, providing critical mechanical and protective function. The atlanto …
Imaging of cranio-cervical junction traumas - European …
2020年3月12日 · By virtue of its peculiar anatomic and biomechanical features, the CCJ has specific patterns of stability/instability completely different from the subaxial spine. In case of C0-C1 instability, the dislocations can occur in either …
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