Ankle Ligaments

Sonography has been described as an effective method to study the integrity of the ankle ligaments [64-66]. Normal ankle ligaments are hyperechoic, but appear thickened and hypoechoic when injured [58]. A complete tear appears as a hypoechoic gap through the ligament. It has been shown that sonography can identify normal anterior talofibular and calcaneofibular ligaments in 90% and 87% of cases, respectively [67].

Anterior Tibialis Tendon Injury

Fig. 23. Partial tear of the tibialis posterior tendon. (A) Transverse image of the posterior tibialis tendon depicts a partial tear (arrow) of the tendon. (B) Color Doppler transverse image shows the tear (arrow) with surrounding tenosynovitis (notched arrow). (C) Axial proton, density-weighted MR image of the ankle also shows the partial tear (arrow).

Fig. 23. Partial tear of the tibialis posterior tendon. (A) Transverse image of the posterior tibialis tendon depicts a partial tear (arrow) of the tendon. (B) Color Doppler transverse image shows the tear (arrow) with surrounding tenosynovitis (notched arrow). (C) Axial proton, density-weighted MR image of the ankle also shows the partial tear (arrow).

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