What is the usual mechanism of rib fracture in motor vehicle accidents?

Updated: Jun 13, 2017
  • Author: Sarah L Melendez, MD; Chief Editor: Trevor John Mills, MD, MPH  more...
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The thinnest and weakest portion of the first rib is at the groove for the subclavian artery. [8] The mechanism of first-rib injury in motor vehicle accidents seems to be a violent contraction of the scalene muscles brought on by the sudden forward movement of the head and neck. [9]

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