Fig. 1

a Illustration of the ankle deflection tester (ADT). The apparatus consists of two rotational components on a fixed stand: A) a small fixable tilting platform which can tilt in the coronal plane, B) a bigger flexing platform which can rotate in the sagittal plane. Two laser pointers were installed at the center of rotation of the coronal and sagittal planes to enhance the accurate positioning of the specimen within the ADT. b The shin markers were placed at the medial epicondyle of the knee, lateral epicondyle of the knee, medial malleolus and the lateral malleolus. Bone pins with markers were inserted into the fibula, calcaneus and talus