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Buckle rib fractures

Case contributed by: Dr Chris O'Donnell

Presentation:

Run over by a truck. Urgent CT chest ordered.

Patient Data:

Age: Adult
Gender: Male
From the case: Buckle rib fractures

CT chest

Modality: CT

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  • Typical buckle rib fracture - inner cortex only

bone window

Typical buckle rib fracture - inner cortex only

Case Discussion:

Buckle rib fractures are typical of an anterior compressive force to the chest most commonly external cardiac massage but can be seen following any such traumatic injury.  Buckle is an engineering term to mean cortical disruption to the compressive (inner) side of the rib and maintenance of the tensile (outer) side cortex.  It occurs in all ages even very elderly patients thus ribs are not the same as most adult long bones that tend to break like pencils on the tensile side when exposed to an extreme force.   Buckle fractures are usually seen in the middle ribs (anterior 1/3) and in a line.  The anterior force responsible for the rib injury may also cause a similar fracture to the sternum.

Related articles

References:

  1. Yang KM, Lynch M, O'Donnell C. "Buckle" rib fracture: an artifact following cardio-pulmonary resuscitation detected on postmortem CT. Leg Med (Tokyo). 2011 Sep;13(5):233-9.

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