Findings:
Bone marrow oedema-like signal of the plantar talar head, the inferior part of the navicular bone, the anterior calcaneus with the sustentaculum tali and the posteroinferior medial talar body.
The dorsal talonavicular ligament is thickened and hyperintense with a small rim of fluid signal intensity at the distal insertion site above the navicular bone.
The dorsal calcaneocuboid ligament is also hyperintense and thickened and with it the lateral capsule or accessory lateral band.
Oedema is also visible at the cuboid insertion of the short plantar ligament and higher up in the calcaneonavicular part of the bifurcate ligament.
Also, the superomedial, medioplantar oblique and inferoplantar longitudinal parts of the spring ligament complex show a higher signal than in a healthy individual.
The lateral ankle ligament complex (anterior talofibular ligament, calcaneofibular ligament, posterior talofibular ligament), the deltoid ligament and the tibiofibular syndesmosis are intact.
Impression:
Multiligament injury of calcaneonavicular, talonavicular, bifurcate and calcaneocuboid ligaments in keeping with midtarsal sprain