Bohler's angle is measured in the fractures involving which of the tarsel bones?
Calcaneum
Talus
Navicular
Cuboid
Bohler's tuber joint angle and Crucial angle of Gissane are measured for intra aicular fractures of calcaneum. Ref: Apley's 8th Edition, Page 750, 751; Rockwood and Green 5th Edition, Page 2135; John Ebnezer 2nd Edition, Page 146.