Böhler’s angle

Calcaneal fracture

Böhler’s angle
ICD-10	S42.2-S42.4
ICD-9	812
eMedicine	emerg/199  orthoped/271 orthoped/199

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohammadmain Rezazadehsaatlou[2].

Synonyms and Keywords: Heel Bone Fracture

Overview

The calcaneus bone known as the largest tarsal bone.

Historical Perspective

In early 1990s,Lorenz Böhler (1885-1973) introduced the Böhler's angle.

Böhler’s angle

Böhler’s angle (Bohler angle, Boehler angle, calcaneal angle, or tuber joint angle): Is located through two lines tangent to the calcaneus: the anterior and posterior aspects of the superior calcaneus and in normal healthy non-fractured calcaneal bone is ranged from 20° to 40°. The lateral radiograph gives the best view of this angle. A value less than 20° can be seen in calcaneal fracture. In calcaneal fracture this angle decreases.

These two angles are useful for the calcaneal fracture severity evaluations and the related surgical managements.

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  Normal Bohler's angle.
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  Calcaneal fracture with a decreased Bohler angle to 14 degrees.