A
Osteochondral fracture of the talar dome.
B
Coronal or sagittal shear fracture of the talar body.
C
Fracture of the posterior process of the talus.
D
Fracture of the lateral process of the talus.
Explanation:The correct option is 'b'. The Sneppen classification categorizes fractures of the talus based on anatomic location. Type I is a transchondral/osteochondral dome fracture. Type II is a coronal or sagittal shear fracture through the talar body. Type III involves the posterior process (tubercle). Type IV involves the lateral process. Type V is a comminuted/crush fracture of the body.
Reference: Sneppen O, Christensen SB, Krogsoe O, Lorentzen J. Fractures of the body of the talus. Acta Orthop Scand. 1977;48(3):317-324.