![Bohler and Gissane angles. Lateral calcaneal radiograph shows a Bohler angle (dotted arch; normal range, 20°–40°), formed between a line from the highest points of the anterior process and posterior facet with a line tangent to the superior aspect of the calcaneal tuberosity. A Gissane angle (yellow arch; normal range, 120°–145°) is formed by the intersection of lines along the posterior facet and anterior process.

Smitaman E, Davis M. Hindfoot Fractures: injury patterns and relevant imaging findings. Radiographics. 2022;42(3):661-682. doi:10.1148/rg.210167](attachment:46aec541-61cb-45a8-827e-cf5a6738fc0b:image.png)

Bohler and Gissane angles. Lateral calcaneal radiograph shows a Bohler angle (dotted arch; normal range, 20°–40°), formed between a line from the highest points of the anterior process and posterior facet with a line tangent to the superior aspect of the calcaneal tuberosity. A Gissane angle (yellow arch; normal range, 120°–145°) is formed by the intersection of lines along the posterior facet and anterior process.

Smitaman E, Davis M. Hindfoot Fractures: injury patterns and relevant imaging findings. Radiographics. 2022;42(3):661-682. doi:10.1148/rg.210167