The upper (trochlear) surface of this elevated region articulates with the inferior end of the tibia.
The medial surface articulates with the medial malleolus of the tibia.
The lateral surface articulates with the lateral malleolus of the fibula.
Because the lateral malleolus is larger and projects more inferiorly than the medial malleolus at the ankle joint, the corresponding lateral articular surface on the talus is larger and projects more inferiorly than the medial surface.