Fig. 2
From: Subtalar instability: imaging features of subtalar ligaments on 3D isotropic ankle MRI
Schematic illustration of ligaments of the sinus tarsi. a On the sagittal plane, cervical ligament is located in the anterior aspect of the tarsal sinus, extending from the undersurface of the talar neck to the back of the calcaneus. Interosseous talocalcaneal ligament and anterior capsular ligament are located along the posterior wall of sinus tarsi. b On the coronal plane along the posterior wall of sinus tarsi, interosseous talocalcaneal ligament runs obliquely while anterior capsular ligament is vertical in direction. The inferior extensor retinaculum is more laterally positioned with respect to the anterior capsular ligament and interosseous talocalcaneal ligament. CL, cervical ligament; ITCL, interosseous talocalcaneal ligament; ACL, anterior capsular ligament; IER, inferior extensor retinaculum; m, medial root of IER; i, intermediate root of IER; l, lateral root of IER