Figure 6c. Coronal sections through the ankle of the cadaver of an 86-year-old woman. D = flexor digitorum longus tendon, S = sustentaculum tali of the calcaneus, T = tibialis posterior tendon. (a) T1-weighted spin-echo MR image (600/20) shows multiple fascicles of the posterior tibiotalar ligament (black arrow) with hyperintense layers (white arrow) of fatty tissue between the fascicles. The superficial layer of the medial collateral ligament, the tibiocalcaneal ligament (arrowhead), is shown as a small, homogeneous band of low signal intensity lateral to the posterior tibiotalar ligament (deep layer of the medial collateral ligament). (b) Corresponding MR image obtained 3 mm posterior to a shows the posterior tibiotalar ligament (arrow) and tibiocalcaneal ligament (arrowheads), which extends to the sustentaculum tali of the calcaneus. The tibiocalcaneal ligament can be easily differentiated from the tibialis posterior and flexor digitorum longus tendons. (c) Photograph of corresponding macroscopic section shows the posterior tibiotalar ligament (arrow) and tibiocalcaneal ligament (arrowheads).