August 11, 2012

Avian Spur


  • AKA supracondylar process of the humerus
  • Congenital osseous/cartilagenous projection arising from the anteromedial surface of the distal humerus
  • Found in 1% of population
  • Associated with ligament of Struthers, which connects the process to the medial epicondyle (fibers of pronator teres may arise from this structure)
  • Median nerve and brachial artery pass below this arch and may be compressed
  • Fracture is possible but rare
Egol KA, Koval KJ, Zuckerman JD. Handbook of fractures; 4th ed, 2010. 

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