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Ideal angle of syndesmotic screw fixation: A CT-based cross-sectional image analysis study

Authors
Park, Young HwanChoi, Won SeokChoi, Gi WonKim, Hak Jun
Issue Date
11월-2017
Publisher
ELSEVIER SCI LTD
Keywords
Ankle syndesmosis; Computed tomography; Ideal angle; Syndesmotic screw fixation
Citation
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED, v.48, no.11, pp.2602 - 2605
Indexed
SCIE
SCOPUS
Journal Title
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED
Volume
48
Number
11
Start Page
2602
End Page
2605
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/81722
DOI
10.1016/j.injury.2017.08.067
ISSN
0020-1383
Abstract
Without clear reference, the precision of syndesmotic screw placement cannot be guaranteed and malposition of these screws leads to poor results. Therefore, to prevent malpositioning of syndesmotic screws, an improved understanding of the orientation of tibiofibular syndesmosis is essential. We analyzed cross-sectional computed tomography (CT) scans of the foot and ankle to identify precise screw positions for the treatment of syndesmotic injuries. A total of 134 calcaneal fractures with intact tibiofibular syndesmosis were enrolled in this retrospective study. We measured the angle between the perpendicular line of the second proximal phalanx and the line start apex of the lateral cortex of the fibula bisecting the tibial incisura and crossing the center of the tibia in neutral ankle joints, with the second toe positioned anteriorly using a short leg splint. The second toe was used as the reference for clarity and applicability. The ideal angle of syndesmotic screw placement in cross-sectional CT images was 18.8 +/- 5.6 degrees (mean +/- standard deviation) and did not differ according to independent variables (P > 0.05). In neutral ankle joints with the second toe positioned anteriorly, the ideal angle of syndesmotic screw placement is 18.8 degrees, which is less than that currently in used in conventional methods. (C) 2017 Elsevier Ltd. All rights reserved.
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