Hi, this is Sagar Wagle, one of the musculoskeletal radiology fellows at Stanford University. We have a case of a 17 year old female with four weeks of ankle pain after inversion injury while playing volleyball. Here we have radiograph and CT images. On the CT images we see fracture of the lateral talar dome with multiple small fracture fragments here on a coronal image and here on a sagittal image. On the radiograph, we do see small loosens in the lateral talar dome. This finding is really subtle and this only becomes clear in retrospect. Here we have the MRI image of the patient. On T2 fat side weighted image, we see the fracture with multiple small fracture fragments and a large amount of surrounding bone marrow edema and on the T1 weighted MRI, we again see the fracture and the edema is seen as this low signal intensity. around the fracture. One thing to keep in mind about ankle x-ray views is that there is a regular anterior posterior view and there's an ankle modus view. In ankle modus view, the x-ray beam is angled slightly more obliquely so that the lateral clear space of the ankle joint opens up. You can see that in the regular AP view, the lateral talar dome is obscured by distal fibula and fracture of the lateral talar dome can be missed and in that case ankle modus view is helpful. Thank you for watching the video.

3rd Edition, CASE 05

3rd Edition

Ankle

musculoskeletal radiology

ankle fracture

volleyball injury

MRI imaging

ankle mortise view