Traditional radiography versus computed tomography to assess reduced distal radius fractures

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Abstract

Introduction: 

This study compares computed tomography (CT) with plain radiography in its ability to assess distal radius fracture (DRF) malalignment after closed reduction and cast immobilization. 

Methods: 

Malalignment is defined as radiographic fracture alignment beyond threshold values according to the Dutch guideline encompassing angulation, inclination, positive ulnar variance and intra-articular step-off or gap. After identifying 96 patients with correct alignment on initial post-reduction radiographs, we re-assessed alignment on post-reduction CT scans. 

Results: 

Significant discrepancies were found between radiographs and CT scans in all measurement parameters. Notably, intra-articular step-off and gap variations on CT scans led to the reclassification of the majority of cases from correct alignment to malalignment. CT scans showed malalignment in 53% of cases, of which 73% underwent surgery. 

Conclusion: 

When there is doubt about post-reduction alignment based on radiograph imaging, additional CT scanning often reveals malalignment, primarily due to intra-articular incongruency.

Original languageEnglish
Pages (from-to)2313-2321
Number of pages9
JournalEuropean Journal of Trauma and Emergency Surgery
Volume50
Issue number5
DOIs
Publication statusPublished - Oct 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

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