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Skeletal Radiology

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Open Access 01-07-2012 | Scientific Article

Correlation between radiological assessment of acute ankle fractures and syndesmotic injury on MRI

Authors: J. J. Hermans, N. Wentink, A. Beumer, W. C. J. Hop, M. P. Heijboer, A. F. C. M. Moonen, A. Z. Ginai

Published in: Skeletal Radiology | Issue 7/2012

Abstract

Objective

Owing to the shortcomings of clinical examination and radiographs, injury to the syndesmotic ligaments is often misdiagnosed. When there is no indication requiring that the fractured ankle be operated on, the syndesmosis is not tested intra-operatively, and rupture of this ligamentous complex may be missed. Subsequently the patient is not treated properly leading to chronic complaints such as instability, pain, and swelling. We evaluated three fracture classification methods and radiographic measurements with respect to syndesmotic injury.

Materials and methods

Prospectively the radiographs of 51 consecutive ankle fractures were classified according to Weber, AO-Müller, and Lauge-Hansen. Both the fracture type and additional measurements of the tibiofibular clear space (TFCS), tibiofibular overlap (TFO), medial clear space (MCS), and superior clear space (SCS) were used to assess syndesmotic injury. MRI, as standard of reference, was performed to evaluate the integrity of the distal tibiofibular syndesmosis. The sensitivity and specificity for detection of syndesmotic injury with radiography were compared to MRI.

Results

The Weber and AO-Müller fracture classification system, in combination with additional measurements, detected syndesmotic injury with a sensitivity of 47% and a specificity of 100%, and Lauge-Hansen with both a sensitivity and a specificity of 92%. TFCS and TFO did not correlate with syndesmotic injury, and a widened MCS did not correlate with deltoid ligament injury.

Conclusion

Syndesmotic injury as predicted by the Lauge-Hansen fracture classification correlated well with MRI findings. With MRI the extent of syndesmotic injury and therefore fracture stage can be assessed more accurately compared to radiographs.

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Title: Correlation between radiological assessment of acute ankle fractures and syndesmotic injury on MRI
Authors: J. J. Hermans
N. Wentink
A. Beumer
W. C. J. Hop
M. P. Heijboer
A. F. C. M. Moonen
A. Z. Ginai
Publication date: 01-07-2012
Publisher: Springer-Verlag
Published in: Skeletal Radiology / Issue 7/2012
Print ISSN: 0364-2348
Electronic ISSN: 1432-2161
DOI: https://doi.org/10.1007/s00256-011-1284-2

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Correlation between radiological assessment of acute ankle fractures and syndesmotic injury on MRI

Abstract

Objective

Materials and methods

Results

Conclusion

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objective

Materials and methods

Results

Conclusion

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