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Anatomic Variations and MRI of the Intermalleolar Ligament

Authors
 Chang-Seok Oh  ;  Hyung-Sun Won  ;  Mi-Sun Hur  ;  In-Hyuk Chung  ;  Sungjun Kim  ;  Jin-Suck Suh  ;  Ki-Sun Sung 
Citation
 AMERICAN JOURNAL OF ROENTGENOLOGY, Vol.186(4) : 943-947, 2006 
Journal Title
 AMERICAN JOURNAL OF ROENTGENOLOGY 
ISSN
 0361-803X 
Issue Date
2006
MeSH
Adult ; Aged ; Aged, 80 and over ; Ankle Joint/anatomy & histology* ; Cadaver ; Female ; Humans ; Ligaments, Articular/anatomy & histology* ; Magnetic Resonance Imaging* ; Male ; Middle Aged
Keywords
ankle ; intermalleolar ligament ; MRI ; posterior impingement syndrome
Abstract
OBJECTIVE: The purpose of this study was to identify the intermalleolar ligament morphologically and to correlate its shape with MR images. MATERIALS AND METHODS: Seventy-seven ankles were used in this study. After the intermalleolar ligament had been located in the posterior ankle space, its medial and lateral attaching sites were identified, and its length, width, and thickness were measured. MRI was performed on 26 ankles before they were dissected (20 specimens) or serially sectioned (six specimens). The serial sections were taken at a thickness of 2 mm in the sagittal and horizontal directions. RESULTS: The intermalleolar ligament was observed in 81.8% of the specimens and was composed of more than two bundles of fibers in all cases. The medial arising sites of the ligament were diverse (e.g., from the medial malleolus to the floor of the fibrous tunnel of the flexor hallucis longus). The ligament narrowed laterally and attached with the posterior talofibular ligament to the medial fossa of the lateral malleolus. Their morphologic shapes were also diverse, depending on their medial arising sites, the number of the composing fiber bundles, and the degree of bundle compactness. The intermalleolar ligament appeared as a thick string or as more than two fine parallel stripes on coronal MR images and as a linear structure on axial images. On sagittal images, the ligament appeared as scattered dots in the medial part and as a thin flat or nodular structure in the lateral part. CONCLUSION: The intermalleolar ligament seemed to be an almost invariably present anatomic entity with diverse morphologic features on MR images.
Full Text
http://www.ajronline.org/doi/abs/10.2214/AJR.04.1784
DOI
10.2214/AJR.04.1784
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
Yonsei Authors
Suh, Jin Suck(서진석) ORCID logo https://orcid.org/0000-0001-9455-9240
Chung, In Hyuk(정인혁)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/109146
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