Talar Sulcus Of The Talus Bone, Inferior View

Description

Sulcus tali occupies the inferior aspect of the talar body as an obliquely oriented, deep groove running from posterolateral to anteromedial across the underside of the bone. Posterior to it sit the posterior calcaneal articular surface and the posterior process (with medial and lateral tubercles), while anteriorly the groove approaches the talar neck and the region leading toward the head. Medial to the sulcus, the middle calcaneal articular facet is typically more compact and elevated; laterally, the large posterior facet expands toward the lateral margin of the talus. A tight space. Clinically, this groove is the talar contribution to the sinus tarsi and tarsal canal when opposed to the sulcus calcanei, and it defines the footprint for the interosseous talocalcaneal ligament, a key stabilizer of the subtalar joint. The inferior perspective is the one you want when explaining hindfoot inversion and eversion mechanics, subtalar instability after lateral ankle sprain, or pain patterns grouped under sinus tarsi syndrome, where synovitis and scar can localize to this canal. It also supports teaching of less common but exam-relevant entities such as talocalcaneal coalition, in which bridging or dysmorphic facets can alter the normal depth and contour of the sulcus, and it provides a useful anatomic reference for subtalar arthroscopy orientation and sinus tarsi approach planning. Orthopaedic foot and ankle lectures, podiatry anatomy labs, and surgical atlases benefit from an isolated inferior talus image that prioritizes the sulcus tali over surrounding landmarks. Use it in figure plates comparing talar and calcaneal sulci, in examinations of subtalar joint ligament anatomy, or alongside CT and MRI discussions of the tarsal canal and sinus tarsi. Anatomical accuracy verified by SciePro's Medical Advisory Board.