Böhler angle, also written as Bohler angle or Boehler angle, is also called the calcaneal angle or tuber joint angle 1.
Böhler angle is the angle between two lines tangent to the calcaneus on the lateral radiograph. These lines are drawn tangent to the anterior and posterior aspects of the superior calcaneus.
The "normal" value for this angle is between 20° to 40°. A value <20° can be seen in calcaneal fractures. However, a mildly decreased Böhler angle may be seen in a normal individual 5 and a normal Böhler angle does not exclude a calcaneal fracture.
History and etymology
Lorenz Böhler (1885-1973) was an Austrian surgeon, regarded as the founder of traumatology 4.
- 1. Khoshhal KI, Ibrahim AF, Al-Nakshabandi NA, Zamzam MM, Al-Boukai AA, Zamzami MM. Böhler's and Gissane's angles of the calcaneus in the Saudi population. Saudi medical journal. 2004;25(12):1967-70.
- 2. Yates B. Merriman's Assessment of the Lower Limb. Churchill Livingstone. (2009) ISBN:0080451071. Read it at Google Books - Find it at Amazon
- 3. Chen MY, Bohrer SP, Kelley TF. Boehler's angle: a reappraisal. Ann Emerg Med. 1991;20 (2): 122-4. Ann Emerg Med (link) - Pubmed citation
- 4. Bohler J. Lorenz Böhler: in memoriam. The Journal of trauma. 13 (7): 658-9. Pubmed
- 5. Sengodan VC, Amruth KH, Karthikeyan. Bohler's and Gissane Angles in the Indian Population. (2012) Journal of clinical imaging science. 2: 77. doi:10.4103/2156-7514.104310 - Pubmed
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