E2084. Don't Get Convulsions Over the Avulsions: A Pictorial Review of Lower Extremity Avulsion Fractures
  1. Andrew Liu; University of Rochester Medical Center
  2. Marc-André Hamel; University of Rochester Medical Center
  3. Vanessa Zayas-Colon; University of Rochester Medical Center
Any ligamentous, tendinous, or capsular insertion may acutely avulse when excessive tensile force is applied. On the other hand, chronic avulsion injuries may arise due to repetitive microtrauma and/or overuse. These findings are often seen in the emergency department in “weekend warriors” and younger patients. Many of these avulsion fractures can be subtle and easily missed unless the radiologist purposefully seeks them out. Confident diagnosis is important for early and appropriate management. Through this presentation, we will review some of the most common seen avulsion fractures of the pelvis and lower extremity.

Educational Goals / Teaching Points
We will review the pertinent musculoskeletal anatomy of various avulsion fractures involving the pelvis and lower extremities. This pictorial review will correlate radiographic findings with cross-sectional imaging (ultrasound, CT, and magnetic resonance imaging) as well as schematics when salient. Finally, mechanisms of injury and associated injuries will be discussed when clinically relevant.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Within our presentation, we will review avulsion fractures associated with ACL and Lisfranc injuries, as well as those involving the lesser trochanter, fifth metatarsal base, and talus/navicular.

At the end of our presentation, our aim is for the audience to be able to recognize some of the most common avulsion fractures of the lower extremity across multiple imaging modalities.