Talus Bone, Inferior View

Description

Oriented to the plantar aspect, the male talus is presented from below, centering the sulcus tali as it runs obliquely between the anterior and posterior calcaneal articular facets on the inferior surface. Posteriorly and laterally, the posterior calcaneal facet curves to meet the superior surface of the calcaneus at the posterior subtalar joint, while the more anterior facet sits closer to the talar head, separated by the deep groove that contributes to the sinus tarsi. Medially, the contour transitions toward the region adjacent to the sustentaculum tali, and laterally the surface relates to the tarsal canal. Bone-only clarity. This inferior view matters because the sulcus tali is not just a topographic depression, it is the bony half of the sinus tarsi and a key landmark when teaching subtalar joint anatomy and inversion-eversion mechanics. Sinus tarsi syndrome, often following inversion sprain, localizes pain to this region, and clinicians frequently correlate tenderness with pathology of the interosseous talocalcaneal ligament and cervical ligament that occupy the sulcus and tarsal canal. For surgeons, appreciating the orientation of the calcaneal facets helps when planning subtalar arthroscopy portals and assessing articular involvement in talar fractures that propagate into the posterior facet. Use this asset for lower-limb gross anatomy labs, podiatry and orthopaedic teaching decks on the subtalar joint, and for medical publishing figures covering hindfoot biomechanics, sinus tarsi anatomy, or subtalar arthrodesis planning. It also supports radiology correlation when explaining oblique CT or MRI cuts through the tarsal canal and sinus tarsi. Anatomical accuracy verified by SciePro's Medical Advisory Board.