Age-related prevalence and imaging characteristics of the superior acetabular roof notch in children, adolescents, and young adults

Objective To determine the age-related prevalence and imaging characteristics of the superior acetabular roof notch (SARN) on hip MRI and radiographs in a young study population. Materials and methods Retrospective analysis of 304 MRI examinations and corresponding available radiographs of patients...

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Bibliographic Details
Published in:Skeletal radiology 2024-01, Vol.53 (1), p.43-49
Main Authors: Dietrich, Tobias Johannes, Vaeth, Desiree, Wildermuth, Simon, Waelti, Stephan, Leschka, Sebastian, Graf, Nicole, Fischer, Tim
Format: Article
Language:English
Subjects:
Acetabulum
Adolescents
Age
Imaging
Magnetic resonance imaging
Medical imaging
Medicine
Medicine & Public Health
Nuclear Medicine
Observers
Orthopedics
Pathology
Population studies
Radiographs
Radiography
Radiology
Regression analysis
Regression models
Scientific Article
Sensitivity
Young adults
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Summary:Objective To determine the age-related prevalence and imaging characteristics of the superior acetabular roof notch (SARN) on hip MRI and radiographs in a young study population. Materials and methods Retrospective analysis of 304 MRI examinations and corresponding available radiographs of patients between the ages of 4 and 24 years. Two observers classified SARN with fluid-like findings on MRI as type-1, whereas SARN with fat-like findings on MRI were classified as type-2. Sensitivity and specificity of radiographic SARN findings were determined using MRI as the reference standard. Logistic regression models were used to assess the age-related prevalence on MRI. Results Twelve patients (3.9%) had fluid-like SARN type-1, 27 patients (8.9%) had fat-like SARN type-2, while 265 patients (87.2%) had no SARN on MRI. The odds ratio (OR) for age (years) with respect to the presence of a fluid-like SARN type-1 on MRI was 0.79 (95% CI: 0.70–0.89), meaning that with each year, the likelihood for SARN type-1 decreased by 21% ( p  
ISSN:0364-2348
1432-2161
DOI:10.1007/s00256-023-04370-z