The lateral atlanto-dens interval: normal range of asymmetry

Wolansky, Leo; Rajaraman, Vaishnavi; Seo, Chang Moon; Patel, Neal; Kazmi, K.; Doddakashi, Satish; Siegel, S.

doi:10.1007/s101400050070

Cited by 12 publications

(8 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The asymmetry in the injured group was 3.8 Ϯ 2.2 mm, which overlaps with the noninjured group. In a study by Wolansky et al, 8 an asymmetry Ͼ3 mm was found to be abnormal in adults. On the other hand, Billmann et al 12 did not find a significant correlation between OLMI asymmetry and traumatic injury in adults.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Asymmetry of the Odontoid Lateral Mass Interval in Pediatric Trauma CT: Do We Need to Investigate Further?

Eran¹,

Yousem²,

Izbudak³

2015

AJNR Am J Neuroradiol

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

“…[6][7][8][9][10][11][12] It is thought to arise from anatomic variation, head rotation, and muscle spasm. Nevertheless OLMI asymmetry might also imply ligamentous injury or atlantoaxial rotational fixation/subluxation at the C1-C2 level which, if present, could potentially lead to a catastrophic sequela.…”

mentioning

confidence: 99%

Asymmetry of the Odontoid Lateral Mass Interval in Pediatric Trauma CT: Do We Need to Investigate Further?

Eran¹,

Yousem²,

Izbudak³

2015

AJNR Am J Neuroradiol

View full text Add to dashboard Cite

show abstract

“…There are conflicting reports on the utility of the odontoid lateral mass interspace (OLMI) in predicting occult injury, as measured both on cross sectional imaging and radiographs. It has been shown that static CT imaging often reveals OLMI asymmetry in asymptomatic patients [25]. One recent study found that OLMI as measured on static CT imaging lacks sensitivity and specificity in detecting ligamentous injury, unless optimal technique is employed [26].…”

Section: Discussionmentioning

confidence: 99%

“…When measured on odontoid open-mouth radiographs, OLMI asymmetry may be an indicator of serious occult injury such as rotary subluxation or fracture [27]. Several studies have suggested, however, that OLMI may demonstrate asymmetry of 2 mm or greater in the absence of any pathology [25,28,29].…”

Section: Discussionmentioning

confidence: 99%

Inter-examiner reliability of radiographic measurements from Open-mouth lateral bending cervical radiographs

et al. 2020

View full text Add to dashboard Cite

Background: Following head and neck trauma, the involvement of the cranio-cervical junction (CCJ) and its contribution to a patients transition to chronic pain, is poorly understood. The detection of hypermobility in this region is dependent on clinical examination and static imaging modalities such as x-ray, CT and MRI. Sagittal plane hypermobility of the CCJ is evaluated using saggital view, flexion-extension cervical radiographs. Frontal plane hypermobility is typically assessed using lateral bending and open mouth cervical radiographs. Unfortunately there is no established reliability surrounding the use of these measures. This study explores the reliability of radiographic measurements of lateral-bending open-mouth cervical radiographs. Methods: Cervical open-mouth lateral-bending X-ray images were collected from 56 different patients between 18 and 60 years of age patients following cervical spine injury. These images were interpreted by two musculoskeletal radiologists and two clinicians (physiatrist and chiropractor), using a standard set of measurements. Measurements included qualitative and quantitative assessments of the amount of asymmetry noted between various osseous landmarks. Reliability statistics were calculated for levels of agreement using kappa coefficients (κ) and Intraclass Correlation Coefficients (ICC) for dichotomous and continuous variables, respectively. Results: Reliability (κ) for qualitative assessments were moderate to substantial for asymmetry of neutral C2 spinous position, dens-lateral mass spacing, and "step off" between the lateral borders of the articular pillars of C2 and C1 lateral mass (κ range = .47-.78). ICC values for the quantitative measurements of dens-lateral mass spacing and "step off" between the lateral borders of the C2 articular pillars and C1 lateral mass were moderate to excellent (ICC range = .56-.97). Conclusions: The qualitative and quantitative measurements used in this study demonstrated good to excellent inter-examiner reliability. Correlation with clinical findings is necessary to establish the utility of these measurements in clinical practice.

show abstract

“…This lateral alignment may be 'off' bilaterally. The lateral atlanto-dental spaces between the lateral masses of the atlas and the C2 ring, may demonstrate a discrepancy of 2 mm or greater in the absence of any pathology (Locke et al, 1966;Iannacone et al, 1990;Mirvis, 1998;Wolansky et al, 1999). With rotation of the head to one side, the space on that side widens.…”

Section: Radiologymentioning

confidence: 99%

The radiological assessment of injuries to the atlanto-axial-occipital complex (C1 and C2 vertebrae)

Banerjee

Clayton-Jolly

Mbamalu

2008

Trauma

View full text Add to dashboard Cite

Upper cervical spine injuries are a source of diagnostic difficulty. While CT scanning is being used more widely in assessing the cervical spine, especially in unconscious patients, plain film radiology remains an important first point of assessment in the UK in less dramatic situations. We summarise relevant literature on plain film radiology of the upper cervical spine, and make some suggestions for structured evaluation of films under review.

show abstract

The lateral atlanto-dens interval: normal range of asymmetry

Cited by 12 publications

References 3 publications

Asymmetry of the Odontoid Lateral Mass Interval in Pediatric Trauma CT: Do We Need to Investigate Further?

Asymmetry of the Odontoid Lateral Mass Interval in Pediatric Trauma CT: Do We Need to Investigate Further?

Inter-examiner reliability of radiographic measurements from Open-mouth lateral bending cervical radiographs

The radiological assessment of injuries to the atlanto-axial-occipital complex (C1 and C2 vertebrae)

Contact Info

Product

Resources

About