This image reveals a reduced Bohler angle in a patient with calcaneal fracture.
Bohler angle is the angle between two lines tangent to the calcaneous on the lateral radiograph. These lines are drawn tangent to the anterior(1) and posterior (3) aspects of the superior (2) calcaneus.The normal range for this angle is between 20 and 40 degrees. A reduced angle is a reliable sign of calcaneal fracture. However, a normal Bohler angle does not exclude a calcaneal fracture.