29-year-old female patient with pain and soft tissue swelling at the lateral malleolus. Question of bony ligament pathology in the left ankle. TENDONS: There is a small amount of fluid noted within the sheath of the medial tendons, otherwise, the underlying tendons are intact. The Achilles and peroneal tendons are intact.LIGAMENTS: The anterior talofibular and calcaneofibular ligaments appear slightly thickened which may represent a mild sprain, but we see no frank disruption of fibers. The posterior talofibular ligament is intact. The distal tibiofibular syndesmotic complex is intact. The visualized components of the deltoid ligament are intact.ARTICULAR SURFACES AND BONE: There is signal intensity abnormality within the distal fibular diaphysis compatible with a grade 3 stress reaction, which corresponds to the cortical irregularity seen on a recent radiographs. We see no discrete fracture line at this time. Mild edema is noted in the surrounding soft tissues. We see no osteochondral defects.ADDITIONAL
Grade 3 stress reaction ("stress fracture") without discrete fracture line at this time.Findings communicated to A. Hong via telephone at 1004 hrs on 7/10/2015. 