Figure 3
(A) Cone frustum approximation of the trochlea surface. The position and orientation of the cone axis and the apical angle were calculated so as to best fit the trochlea surface. (B) Definition of the talar angle in DeSilva3. The tali were placed so that the plantar edges of the calcaneal facets and the inferior aspect of the talar head were same plane. In this orientation, the angle between the line connecting the superior-most points on the medial and lateral trochlea rims and the line connecting the inferior-most points on the articular surfaces for the medial and lateral malleoli was measured.
