| High origin of the anterior band of the inferior glenohumeral ligament: MR arthrography with anatomic and histologic correlation in cadavers. | |
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MedLine Citation:
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PMID: 21603871 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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INTRODUCTION: The anterior band of the inferior glenohumeral ligament has been described to arise from the anteroinferior labrum, but we have observed that in some persons its origin is from the anterior or anterosuperior labrum, creating diagnostic difficulties. MATERIALS AND METHODS: Ten fresh unembalmed cadaveric shoulders underwent magnetic resonance arthrography (MRA) using a posterior approach with a 1.5 T GE magnet, with the following sequences: T1-weighted fast spin-echo in axial, coronal and sagittal planes, and T1 fat-suppressed spin-echo in the axial plane (TR/TE 600/20, section thickness 2.5 mm, 0.5 mm interslice space, number of signals acquired, two, field of view 12 × 12 cm, and matrix 512 × 256 pixels). Following imaging, the shoulders were frozen and later sectioned using a band saw into 3-mm sections corresponding to the axial imaging plane. Histological analysis was also performed to determine the origin of the anterior band. RESULTS: Four of the ten shoulders had an origin of the anterior band above or at the 3 o'clock position: one at the 1 o'clock position, two at the 2 o'clock position, and one at the 3 o'clock position. In another shoulder, the anterior band of the inferior glenohumeral ligament originated from the middle glenohumeral ligament, and in five other shoulders, the anterior band originated from the anteroinferior labrum as has been described in the literature. CONCLUSIONS: This finding is of clinical significance as a high origin of the anterior band of the inferior glenohumeral ligament leads to MR arthrographic finding that can simulate those of labral tears or detachments. |
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Authors:
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Francisco Alejandro Ramirez Ruiz; Beatriz Cristina Baranski Kaniak; Parviz Haghighi; Debra Trudell; Donald L Resnick |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-5-22 |
Journal Detail:
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Title: Skeletal radiology Volume: - ISSN: 1432-2161 ISO Abbreviation: - Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-5-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7701953 Medline TA: Skeletal Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Radiology, Musculoskeletal Division, University of California and VA healthcare system, 3350 La Jolla Village Dr., San Diego, CA, 92161, USA, fcoarr@gmail.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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