| Variations in normal sternoclavicular joints; a retrospective study to quantify SCJ asymmetry. | |
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MedLine Citation:
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PMID: 19308406 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: A wide degree of normal anatomical variation can occur at the sternoclavicular joint (SCJ). On occasion, this has led to concern for a pathological process, potentially resulting in a costly work-up, unnecessary patient worry and invasive diagnostic procedures such as biopsy. The purpose of this study was to determine the normal range of anatomical variation at sternoclavicular joints. MATERIALS AND METHODS: One hundred four consecutive patients with chest CT done at our institution were selected. Patients with clear SCJ pathology, chest wall abnormality, CT slice thickness greater than 5 mm and sternotomy wires, were excluded. Chart review was done and showed no SCJ symptoms/signs. We measured the SCJ space, maximum clavicular head diameter within the joint and the distance from manubrium to the anterior margin of the clavicular head. RESULTS: Left and right SCJ space ranged from 0.2 to 1.37 cm. The difference (delta or asymmetry) between left SCJ space and right SCJ space ranged from 0 (symmetrical) to 0.57 cm in 104 cases. Left and right clavicular head diameter ranged from 1.2 to 3.7 cm with left/right asymmetry (delta) ranging from 0 (symmetrical) to 1 cm. Manubrium to anterior margin of clavicular head ranged from 0.1 to 2.13 cm with delta ranging from 0 to 0.8 cm. Thirty-three patients demonstrated gas in the joint, five had poor articulation and four had calcification in the joint. CONCLUSION: Greater than 10% of patients show substantial asymmetry in the sternoclavicular joints, which may be misinterpreted as pathological. Gas in the joint is a common phenomenon therefore should not be an indication for further work-up in asymptomatic patients and likely excludes the presence of effusion. |
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Authors:
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Daymen Tuscano; Sima Banerjee; Michael R Terk |
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Publication Detail:
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Type: Journal Article Date: 2009-03-24 |
Journal Detail:
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Title: Skeletal radiology Volume: 38 ISSN: 1432-2161 ISO Abbreviation: Skeletal Radiol. Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-08-27 Completed Date: 2009-11-05 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7701953 Medline TA: Skeletal Radiol Country: Germany |
Other Details:
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Languages: eng Pagination: 997-1001 Citation Subset: IM |
Affiliation:
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Emory Orthopaedics and Spine Center, Atlanta, NE 30329, USA. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Humans Middle Aged Radiographic Image Interpretation, Computer-Assisted / methods* Reproducibility of Results Retrospective Studies Sensitivity and Specificity Sternoclavicular Joint / anatomy & histology*, radiography* Tomography, X-Ray Computed / methods* Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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