| Understanding the superior clear space in the adult ankle. | |
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MedLine Citation:
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PMID: 17475145 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: The width of the medial clear space often is used to determine the integrity of the deltoid ligament, the primary medial stabilizer of the ankle joint. The normal clinical relationship of the superior clear space to the medial clear space is not well described. This investigation sought to determine if the superior clear space constitutes an accurate point of comparison for the medial clear space and a means for assessing ligamentous stability in an adult ankle. METHODS: A retrospective review of consecutive ankle radiographs for a 4-month period of time was completed using a university-based radiology database. Using a digitally calibrated ruler, the widths of the medial and superior clear spaces were measured on the mortise view. These values were compared using a Student's t-test. RESULTS: Digital radiographs of 564 consecutive ankles were reviewed retrospectively and 94 cases were without evidence of trauma, surgery, or degenerative disease. The medial and superior clear spaces were measured on the mortise view and found to be 2.7 mm (standard deviation 0.5; range 1.3 mm to 4.3 mm; 95% confidence interval 1.7 mm to 3.8 mm) and 3.6 mm (standard deviation 0.6; 2.0 to 5.3; CI 2.4 mm to 4.7 mm), respectively. The average absolute difference was 0.9 mm (standard deviation 0.5; -0.7 to 1.5; CI -0.1 mm to 1.8 mm) and in 92 of 94 ankles (98%), the superior clear space was greater than or equal to the medial clear space. CONCLUSIONS: Understanding the normal radiographic relationship of the superior and medial clear spaces may help in the diagnosis of ligamentous instability in the ankle and may obviate the need for additional diagnostic tests. |
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Authors:
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Joseph P DeAngelis; Richard Anderson; Nicola A DeAngelis |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Foot & ankle international / American Orthopaedic Foot and Ankle Society [and] Swiss Foot and Ankle Society Volume: 28 ISSN: 1071-1007 ISO Abbreviation: Foot Ankle Int Publication Date: 2007 Apr |
Date Detail:
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Created Date: 2007-05-03 Completed Date: 2007-06-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9433869 Medline TA: Foot Ankle Int Country: United States |
Other Details:
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Languages: eng Pagination: 490-3 Citation Subset: IM |
Affiliation:
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University of Connecticut, Department of Orthopaedic Surgery, MARB, 4th Floor, Farmington, CT 06032, USA. jpdeangelis@yahoo.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Ankle Joint / anatomy & histology*, radiography* Female Humans Male Middle Aged Reference Values Retrospective Studies |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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