The test is performed after positioning
the ankle in neutral to 10° of plantar flexion with the patient
seated and the knee flexed (Fig. 2). The examiner holds the
calcaneus in one hand while stabilizing the distal tibia in
the other, and the calcaneus is translated forward. Increased
translation of 3 mm compared to the uninjured side or an
absolute value of 10 mm of displacement correlates to ATFL
incompetence.19