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An apparatus for the radiographic diagnosis of ligamentous lesions of the ankle dynamic projections.

Functional radiographic investigation is indispensable to the clinical examination of ligamentous lesions of the ankle. It facilitates correct classification of the different lesions. This correlation of clinical findings and precise radiographical images to well defined anatomo-pathological lesions is particularly important in selecting the correct treatment. An apparatus is described which makes it possible to identify more precisely ligamentous lesions of the ankle, both the abnormal tilting of the talus in A.P. views, and forward talar sliding ("angle of ballottamento") seen in lateral views. This apparatus is easy to use in the First Aid department and can be used without general or local anaesthesia.