Shape Approximation and Size Difference of the Upper Part of the Talus: Implication for Implant Design of the Talar Component for Total Ankle Replacement

Figure 2

An illustration of the model reconstruction process and 3D fitting method. (a) Segmentation of the talus from CT images. (b) Acquiring the 3D model of the talus. (c) Curvature analysis and mesh selection. (d, e) The top (d) and front (e) views of the talus with the fitting two spheres, medial and lateral fitting plane, and horizontal plane. (f, g) Remaining bone fragment (f) and 3D fitting model (g) after the resection of the medial, lateral, and horizontal planes.

(a)

(b)

(c)

(d)

(e)

(f)

(g)