Abstract
Injuries of the ankle joint show lesions of the lateral ligamentous apparatus with an incidence of 1 in 1000cases. With arange of 0.3-0.7 in 1000 cases, injuries of the medial ligamentous apparatus occur more frequently than previously thought and are often overlooked. Correct imaging diagnostics of the ankle ligaments are mandatory for the prognosis and treatment planning. In cases of clinically strong suspicion of ligamentous injury or osteochondral lesions of the ankle joint, after primary radiographic evaluation magnetic resonance imaging (MRI) is primarily recommended for a more precise assessment. Additionally, the sensitivity for assessment of the ligaments with ultrasonography is good (91% vs. 97% with MRI) but its specificity is inferior compared to MRI (63% vs. 93% with MRI). Supination trauma is the most common ankle injury and attention should be paid to the anterior tibiofibular ligament and calcaneofibular ligament. In approximately 50%, injuries to the superficial layer of the medial collateral ligament complex are associated with lesions of the posterior tibiotalar ligament.
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