Abstract
The ankle stability and its biomechanics can be compromised after ligamentous and malleolus lesions. The complete early diagnosis, and also the early and late postsurgery results, must be formulated and explained using the tibio-astragalus radiologic indices. The paper evaluates the importance of these presurgery and postsurgery indices, analyzing also the late results under causal report. Our subordinating to the exigency of radiologic indices to obtain a reparation as anatomic as possible, shows that the surgical treatment must be applied to osteo-ligamentous lesions properly, so that to get the remake of tibio-astragalus biomechanics.