The patient placed an MR-compatible marker on skin overlying site of focal pain.
- lateral compartment
- anterior talofibular ligament (ATFL) severely attenuated and partially ruptured with fluid along talofibular gap, consistent with at least a grade 2 sprain
- thickened and lax appearance of calcaneofibular ligament (coronal T2-FS images), which can be followed inferiorly from fibular tip to a tiny avulsed fracture fragment (axial and coronal T1). Focal marrow edema and a matching tiny T1 hypointensity of the lateral calcaneus near the peroneal tubercle indicate the donor site
- posterior talofibular and syndesmotic ligaments intact
- small ankle effusion
- marrow edema along anterior cuboid and talus, although without discrete T1 hypointensity. Findings most consistent with bone contusions