It is the lateral head tilt, not head rotation, causing an asymmetry of the odontoid-lateral mass interspace

Guenkel, Sebastian; Scheyerer, Max J.; Osterhoff, Georg; Wanner, Guido A.; Simmen, Hans‐Peter; Werner, Clément M. L.

doi:10.1007/s00068-015-0602-0

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Several investigators have postulated that head rotation (13,31) and even lateral head tilt (32) result in LADI asymmetry. We found no correlation of LADI asymmetry to either of these, supporting the theory that LADI asymmetries are mostly normal variants regardless of head positioning.…”

Section: Discussionmentioning

confidence: 99%

Diagnostic Benefit of MRI for Exclusion of Ligamentous Injury in Patients with Lateral Atlantodental Interval Asymmetry at Initial Trauma CT

et al. 2021

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Section: Discussionmentioning

confidence: 99%

Diagnostic Benefit of MRI for Exclusion of Ligamentous Injury in Patients with Lateral Atlantodental Interval Asymmetry at Initial Trauma CT

et al. 2021

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“…It is stabilized by the transverse ligament posteriorly, which restraints the atlas up to 3 mm and limits its anteroposterior movement. Lateral rotation of the dens is limited by alar ligaments, which extend from the apex of the dens up to the lateral occipital condyles 2 , 3 .…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional computed tomography analysis of the atlanto-dental interval in a healthy Karachi population: a single-center retrospective cross-sectional study

Sultan,

Bhugio,

Shaikh

et al. 2023

Annals of Medicine &Amp; Surgery

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Background: The atlantoaxial joint has a complex anatomical configuration and has a wide range of mobility. Traumatic, inflammatory, and neoplastic joint pathologies frequently affect this joint. The aim of this retrospective cross-sectional study was to evaluate the atlanto-dental intervals (ADI) in patients who underwent CT scans of the neck and cervical spine in at a tertiary care hospital in Karachi, Pakistan. Methods: This was a retrospective cross-sectional study conducted at a tertiary care hospital in Karachi between January 1, 2021, and December 31, 2021, following approval from the hospital ethical review committee. Patients above the age of 15 who underwent CT scans were included, while individuals with a history of cervical trauma, infection, rheumatoid arthritis, or congenital anomalies, as well as those younger than 15 years old, were excluded. CT scans were performed using a multidetector scanner utilizing a standardized protocol. Sagittal and coronal images were reconstructed. ADI measurements, including anterior ADI (AADI), posterior ADI (PADI), and lateral ADI (LADI) on both sides, were determined using appropriate bone window settings. A radiologist with a minimum of three years of experience analyzed the CT scans. Results: The mean age of the patients was 49.3 years±17.7 years (age range: 16 y to 85 y). The mean AADI was 1.4±0.4 mm, with a range of 0.0 mm to 2.1 mm. The mean PADI was 19.1±1.9 mm, with a range of 13.8 mm to 24.6 mm. The mean left LADI measurement was 3.3±1.2 mm with a range of 1.2 mm to 10.0 mm, and the mean right LADI measurement was 3.2±1.1 mm with a range of 1.2 mm to 6.3 mm. Conclusion: Our study examined the atlanto-dental intervals in patients who underwent CT scans of the neck and cervical spine in Karachi. The findings provide valuable insights into the relationship between ADI measurements, age, and gender. These results contribute to our understanding of the anatomical variations in this region, which may aid in the diagnosis and management of cervical spine disorders.

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Craniocervical junction

Bierry¹

2020

Skeletal Trauma

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It is the lateral head tilt, not head rotation, causing an asymmetry of the odontoid-lateral mass interspace

Abstract: We conclude that an atlantoaxial asymmetry revealed in CT scans of the cervical spine occurs occasionally. Since head tilt correlates with an atlantoaxial asymmetry, it is crucial to perform cervical spine CT scans in a precise straight head position.

Cited by 3 publications

References 29 publications

Diagnostic Benefit of MRI for Exclusion of Ligamentous Injury in Patients with Lateral Atlantodental Interval Asymmetry at Initial Trauma CT

Diagnostic Benefit of MRI for Exclusion of Ligamentous Injury in Patients with Lateral Atlantodental Interval Asymmetry at Initial Trauma CT

Three-dimensional computed tomography analysis of the atlanto-dental interval in a healthy Karachi population: a single-center retrospective cross-sectional study

Craniocervical junction

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