The arcuate sign - is a fracture of the styloid of the fibula at the insertion of the arcuate ligament complex (arcuate ligament, popliteofibular ligament and fabellofibular ligament). It is important because fracture at this site is associated with ACL or PCL tear and posterolateral corner injury. If not caught early can lead to instability, early osteoarthritis and failure of the cruciate ligament repair.
references: http://www.ajronline.org/cgi/content/full/180/2/381 and http://radiology.rsnajnls.org/cgi/content/full/244/2/620
No comments:
Post a Comment