[Expanded roentgen diagnosis of the lower ankle joint].

The standard radiographs in two planes of the ankle joint and of the foot do not allow an exact evaluation of the subtalar joint. Two additional views are proposed. With a dorsal flexion of the ankle joint one radiograph is obtained in 60 degrees internal rotation and the other in 60 degrees external rotation. The medial-oblique and lateral-oblique views considerably increase diagnostic information with a minor effort compared to tomography.