ArticleKorean journal of radiology
Associations between Alpha Angle and Herniation Pit on MRI Revisited in 185 Asymptomatic Hip Joints.
Article in Korean journal of radiology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
What it found
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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Correlation between the presence of herniation pit and femoroacetabular impingement: a systematic review and meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Pooled it
- Imaging features and differential diagnosis of benign osseous cystic lesions: Aneurysmal bone cyst versus femoral neck herniation pit.Pakistan journal of medical sciences · 2026Article
- Serial Changes in Image Findings of Herniation Pits from the First Appearance.Clinics in orthopedic surgery · 2020Article
- Selection and Reporting of Statistical Methods to Assess Reliability of a Diagnostic Test: Conformity to Recommended Methods in a Peer-Reviewed Journal.Korean journal of radiologyArticle
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo evaluate the association between alpha angle and herniation pit on MRI in asymptomatic hip joints and their associations with demographic variables. MATERIALS AND
methodsHip MRI of 185 asymptomatic hip joints of 105 adults (age 18 to 80 years) from September 2011 through December 2012 were retrospectively studied. Alpha angles were measured on oblique axial MR images by 2 observers. Herniation pit was determined by 1 observer. Size measures, prevalence, and statistical analyses were conducted regarding its association with age, gender, laterality (right or left hip). Intra- and inter-observer agreements were determined by intra-class correlation coefficient.
resultsThe prevalence of herniation pit in asymptomatic hips was 21.6%. The range of alpha angle was 27.6-65.0 degrees. Seventeen and 16 out of 185 (9.1% and 8.6%) hip joints showed alpha angle of ≥ 55 degrees in first and second measurement sessions, respectively. There was no association between alpha angle ≥ 55 and presence of herniation pit. There was no association between alpha angle ≥ 55 and the size of herniation pit. Inter-observer agreement of alpha angle was 0.485 between first measurements of first vs. second observer, respectively. Intra-observer agreement of alpha angle was 0.654, respectively. Forty (21.6%) of 185 hip joints (35 of 105 patients, 33.3%) had herniation pit, with no difference according to age, gender, or laterality of hip joint.
conclusionThere is no association between alpha angle ≥ 55 degrees and presence of herniation pit or demographic variables.
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