Fig 3.

Arthroscopic views of drive-through sign. Ankle arthroscopy is performed with the camera in the lateral viewing portal and the 2.9-mm shaver in the medial portal. The drive-through sign is (A) positive when the shaver is easily inserted between the talar dome and the medial malleolus but (B) negative when the shaver cannot easily pass between these 2 structures. After fibula fixation, a positive test indicates that the mortise is unstable and further fixation of the syndesmosis should be performed.