Frequent ankle sprains Metallic susceptibility artifact overlies the distal fibula representing suture anchors as seen on prior radiographs. TENDONS: The Achilles tendon is unremarkable. Note is made of a type I accessory navicular. A small amount of fluid surrounds the medial tendons which is of doubtful clinical significance. There is a longitudinal tear of the peroneus brevis tendon as it courses posterior and beneath the lateral malleolus. The anterior tendons are unremarkable.LIGAMENTS: The anterior talofibular ligament is indistinct with an adjacent ossicle in its location, representing a chronic tear. The calcaneofibular ligament is likewise indistinct, likely from prior tearing. The posterior talofibular ligament appears attenuated which may reflect prior partial tearing. The distal tibiofibular syndesmotic complex is intact. There is loss of the normal fatty striations of the deep tibiotalar fibers of the deltoid ligament likely reflecting prior sprain. The spring ligament is grossly intact.ARTICULAR SURFACES AND BONE: A small focus of signal abnormality is noted within the talar dome laterally with heterogeneity of the overlying articular cartilage, representing an osteochondral defect that may be degenerative in nature or related to prior trauma. Subchondral edema is noted within the tibial plafond laterally that may also be degenerative in nature or represent a bone contusion. There is signal abnormality within the body of the calcaneus below the angle of Gissane which may represent a large normal vascular remnant or less likely early intraosseous ganglion formation. Mild osteoarthritis affects the subtalar joint with osteophytes noted along the posterior facet and degenerative edema within the sustentaculum talus.
1. Tears of the anterior talofibular and likely calcaneofibular ligaments, with attenuation of the posterior talofibular ligament which may reflect partial tearing.2. Longitudinal tear of the peroneus brevis tendon.3. Osteoarthritis of the subtalar and tibiotalar joints with other findings detailed above.