Evaluation of lateral atlantodental interval asymmetry in the pediatric age group: normative values

Journal of Neurosurgery. Pediatrics
Stephen K MendenhallAndrew Jea

Abstract

OBJECTIVE The revelation of normative radiographic measurements for the developing pediatric spine is incomplete. The purpose of this analysis was to determine the normal range of asymmetry of the lateral atlantodental interval (LADI) and define age- and sex-related differences. METHODS A total of 3072 children aged 0-18 years who underwent CT scanning of the cervical spine were identified at Riley Hospital for Children between 2005 and 2017. Patients were stratified by sex and age (in years) into 36 cohorts. Following this stratification, patients within each group were randomly selected for inclusion until 15 patients in each group had been measured (quota sampling). A total of 540 patients were included for study. Right and left linear measurements were performed in the CT axial plane at the C-1 midlateral mass level. RESULTS The overall mean difference between the right and left LADI was 0.09 ± 1.23 mm (range -6.05 to 4.87 mm). The magnitude of this asymmetry remained statistically insignificant across age groups (p = 0.278) and sex (p = 0.889). The intraclass correlation coefficient was 0.805 (95% CI 0.779-0.829). CONCLUSIONS Asymmetry of the LADI is not unusual in asymptomatic children. There is no appreciable difference ...Continue Reading

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Citations

Aug 6, 2019·World Neurosurgery·Tugrul Cem UnalOmer Faruk Unal

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