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[Possibilities for radiologic imaging of the retro-malleolar groove].

The possibilities of X-rays of the retromalleolar groove of the peroneal tendons have been proved. The CT-technique is simple in handling and gives most information because of the possibility to judge as well the peroneal tendons, the haematoma as the retromalleolar groove. It is fit for diagnosis and for preoperative planning of the therapy. A standardized technique of the tangential projection of the retromalleolar groove is presented. This technique is more difficult than CT, but, if it is done correctly, the information is from the same value than the information of the CT. X-rays of the ankle in the posterior-anterior and lateral projection are only of value in cases with an avulsion-fracture of the peroneal retinaculum. The tomography of the lateral malleolus gives not more information.