足関節外側側副じん帯損傷のストレスＸ線評価について 問題点に対する実験的考察

Abstract

In order to clarify roentgenographical diagnosis of ankle instability resulting from lateral ligament injury of the ankle, morphological measurements of the anterior talofibular(ATF) ligament and the calcaneofibular (CF) ligament were performed utilizing thirty-three cadaver ankles and six amputated ankles. The ATF ligaments of sixteen ankles were cut and changes in ankle instability which were influenced by the application of force and the position of the ankle were observed. Then the CF ligament was also cut and changes in ankle instability were again noted.In taking stress roentgenograms of the anterior drawer test and the varus stress test, it may be desirable to keep the ankle in a neutral position and apply manually a force of more than 10kg.In the above mentioned situation, it is suggested that the anterior drawer test is mainly related to the condition of the ATF ligament and the varus stress test to that of the CF ligament.