An observational study in Shoulder Impingement Syndrome and Acromial Morphology, sponsored by University Hospital, Strasbourg, France. Recruiting at 1 site in France. Open to participants aged 20 Years to 98 Years. Per ClinicalTrials.gov, last updated 2026-10-22.
Sponsored by University Hospital, Strasbourg, France · Observational
This study evaluates the reliability of CT-based assessment of acromial morphology and its relationship with age, in order to improve understanding of shoulder pathologies such as subacromial impingement and rotator cuff tears.
This is a retrospective monocentric observational study conducted at Strasbourg University Hospitals including 420 patients who underwent shoulder CT or arthro-CT between 2009 and 2023. Acromial morphology is assessed using the Bigliani classification on 3D reconstructions. The study evaluates intra- and inter-observer reliability using kappa coefficients and explores the relationship between acromial shape and patient age. Data are collected retrospectively from medical records and imaging software, with repeated assessments performed at 3 and 6 months to evaluate reproducibility.
312 studies on the registry are indexed under Shoulder Impingement Syndrome; 58 are open to participants now.
This study's planned enrollment of 420 is above the median of 60 across 41 observational studies indexed under Shoulder Impingement Syndrome.
Browse Shoulder Impingement Syndrome studies →University Hospital, Strasbourg, France is the lead sponsor of 989 studies on the registry; 348 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Patients who underwent shoulder CT or arthro-CT at Strasbourg University Hospitals between 2009 and 2023, stratified by age groups, and included for analysis of acromial morphology.
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Exclusion Criteria:
Intra-Rater and Inter-Rater Reliability of the Bigliani Classification of Acromial Morphology
Acromial morphology will be classified as Type I (flat), Type II (curved), or Type III (hooked) according to the Bigliani classification, using 3D-reconstructed shoulder CT scans or CT arthrography images. Intra-rater and inter-rater reliability will be assessed using kappa agreement coefficients (Cohen's kappa and Fleiss' kappa). Five evaluators will assess the images, with repeat evaluations at 3 and 6 months after the initial assessment.
Time frame: Initial assessment, with repeat assessments at 3 and 6 months after the initial assessment.
Started Jan 2026 (actual). Primary completion is estimated for Nov 2026, 10 months after the start.
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From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Shoulder Impingement Syndrome →
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