Twenty acutely traumatised patients with a rupture of the anterior talofibular ligament were studied by MRI. The results of 3D-studies were correlated with conventional stress x-ray studies. The ruptured ligament was directly visualised in all cases as a thickened structure of high signal intensity. In case of complete ruptured ligaments free flowing ligamentous structures were seen in the signal intense exudation in the ankle joint. MRI can help to decide between surgery or conservative therapy.
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