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Imaging modalities for atraumatic shoulder hypermobility: a scoping review.
Dion Diep1, Mohamed R Gemae2, Jordan Farag1,3
1Division of Physical Medicine & Rehabilitation, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Skeletal Radiology
|October 29, 2024
Summary
Imaging can help diagnose atraumatic shoulder hypermobility. Magnetic resonance arthrography and ultrasound show capsular redundancy and increased acromiohumeral distance in multidirectional instability, aiding diagnosis.
Area of Science:
- Orthopedics
- Radiology
- Sports Medicine
Background:
- Atraumatic shoulder hypermobility diagnosis can be challenging.
- Objective imaging measures may improve diagnosis and management.
- Current imaging techniques for characterizing this condition require examination.
Purpose of the Study:
- To conduct a scoping review of imaging modalities and techniques for characterizing atraumatic shoulder hypermobility.
- To identify imaging findings associated with atraumatic shoulder hypermobility and multidirectional instability (MDI).
Main Methods:
- Searched MEDLINE, EMBASE, SPORTDiscus, Cochrane Library, and Web of Science up to May 2024.
- Included primary studies on imaging findings in atraumatic shoulder hypermobility.
- Excluded patients with unilateral instability due to frequent traumatic association.
Main Results:
- Eighteen studies were included, focusing on capsular redundancy, glenohumeral anatomy, and muscle activation.
- Magnetic resonance arthrography (MRA) showed increased capsular cross-sectional area (CSA) and superior capsular elongation in MDI.
- MRA parameters like labrocapsular distance and glenocapsular ratio were highly sensitive and specific for MDI.
Conclusions:
- Capsular redundancy markers (CSA, labrocapsular distance, glenocapsular ratio), acromiohumeral distance (AHD), and muscular activity aid in diagnosing MDI.
- No definitive imaging markers exist for diagnosing atraumatic shoulder hypermobility without MDI.
