Abstract

Background: Accurate syndesmotic reduction is necessary for achieving joint congruity and better functional outcomes. Radiographs alone don’t suffice, and CT scans are required for the evaluation of postoperative syndesmotic reduction. Methods: All patients who underwent ankle syndesmotic reduction and fixation from December 2019 to July 2021 were taken into the study. Predefined measurements were taken in postoperative radiographs and axial CT images were taken postoperatively. Sensitivity and specificity of X-rays when compared to CT scan were evaluated. Results: Twenty eight patients were included in the study and 13 cases were found to have syndesmotic malreduction in radiographs as per TCS and TFO in AP view and TFO and MCS measurements in mortise view. Five out of 28 cases were found to have syndesmotic malreduction in CT axial cuts as per standard anterior and posterior measurements. Hence 17.85% cases were malreduced in our study as per the gold standard (CT scan). The incidence of syndesmotic malreduction after fixation was 17.85%. Radiographs had a sensitivity of 60% and specificity of 56.5% in detecting malreduction. Conclusion: CT scan is necessary to accurately diagnose syndesmotic malreduction after open reduction and internal fixation of ankle fractures with associated syndesmotic injuries.

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