Arcuate complex avulsion fracture

Case contributed by Maulik S Patel
Diagnosis probable

Presentation

Trauma to the knee.

Avulsion fracture of the styloid process of the fibula.

Case Discussion

Avulsion fracture of the styloid process of the fibula is in keeping with an arcuate sign and sometimes obscured on routine frontal knee radiographs. It represents an avulsion fracture at the site of the insertion of the arcuate ligament complex.

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