Difference between revisions of "X-ray of calcaneal fractures"

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[[File:Bohler's angle (raster).jpg|thumb|Bohler's angle<ref name=Miller2015>[https://books.google.com/books?id=cctQCwAAQBAJ&pg=PA562 Page 562] {{webarchive|url=https://web.archive.org/web/20171105193553/https://books.google.com/books?id=cctQCwAAQBAJ&pg=PA562 |date=2017-11-05 }} in: {{cite book|title=Miller's Review of Orthopaedics|author=Mark D. Miller|author2=Stephen R. Thompson|edition=7th|publisher=Elsevier Health Sciences|year=2015|isbn=9780323390422}}</ref>]]
 
[[File:Bohler's angle (raster).jpg|thumb|Bohler's angle<ref name=Miller2015>[https://books.google.com/books?id=cctQCwAAQBAJ&pg=PA562 Page 562] {{webarchive|url=https://web.archive.org/web/20171105193553/https://books.google.com/books?id=cctQCwAAQBAJ&pg=PA562 |date=2017-11-05 }} in: {{cite book|title=Miller's Review of Orthopaedics|author=Mark D. Miller|author2=Stephen R. Thompson|edition=7th|publisher=Elsevier Health Sciences|year=2015|isbn=9780323390422}}</ref>]]
 
[[File:Gissane.jpg|thumb|Gissane's angle]]
 
[[File:Gissane.jpg|thumb|Gissane's angle]]
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On lateral radiographs:
 
On lateral radiographs:
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*The Angle of Gissane, also called "Critical Angle", is the angle formed by the downward and upward slopes of the calcaneal superior surface. An angle of Gissane of more than 130° suggests a fracture of the posterior subtalar joint surface.
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*'''Bohler's angle''', or the "Tuber Angle" is formed by the intersection of  
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:*A line from the highest point of the posterior articular facet to the highest point of the posterior tuberosity.
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Bohler's angle, or the "Tuber Angle" is formed by the intersection of  
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:*A line tangential to the superior edge of the tuberosity.<ref name=Miller2015/>
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*A line from the highest point of the posterior articular facet to the highest point of the posterior tuberosity.
 
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*A line tangential to the superior edge of the tuberosity.<ref name=Miller2015/>
 
 
Bohler's angle is normally 25° to 40°.<ref name=Miller2015/> A decreased angle is indicative of a calcaneal fracture.
 
Bohler's angle is normally 25° to 40°.<ref name=Miller2015/> A decreased angle is indicative of a calcaneal fracture.
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*The Angle of '''Gissane''', also called "Critical Angle", is the angle formed by the downward and upward slopes of the calcaneal superior surface. An angle of Gissane of more than 130° suggests a fracture of the posterior subtalar joint surface.
  
 
==Further evaluation==
 
==Further evaluation==

Revision as of 12:58, 30 May 2018

Planning

Projectional radiography ("X-ray") is usually the initial modality for suspected calcaneal fracture.

Diagnosis

Bohler's angle[1]
Gissane's angle

On lateral radiographs:

  • Bohler's angle, or the "Tuber Angle" is formed by the intersection of
  • A line from the highest point of the posterior articular facet to the highest point of the posterior tuberosity.
  • A line tangential to the superior edge of the tuberosity.[1]

Bohler's angle is normally 25° to 40°.[1] A decreased angle is indicative of a calcaneal fracture.

  • The Angle of Gissane, also called "Critical Angle", is the angle formed by the downward and upward slopes of the calcaneal superior surface. An angle of Gissane of more than 130° suggests a fracture of the posterior subtalar joint surface.

Further evaluation

A CT scan of calcaneal fracture is currently the imaging study of choice for evaluating calcaneal injury.[2]

References

  1. ↑ 1.0 1.1 1.2 Page 562 in: Mark D. Miller; Stephen R. Thompson (2015). Miller's Review of Orthopaedics (7th ed.). Elsevier Health Sciences. ISBN 9780323390422. 
  2. ↑ Badillo, Kenneth; Pacheco, Jose A.; Padua, Samuel O.; Gomez, Angel A.; Colon, Edgar; Vidal, Jorge A. (2011). "Multidetector CT Evaluation of Calcaneal Fractures ". RadioGraphics 31 (1): 81–92. doi:10.1148/rg.311105036. PMID 21257934. 
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