Body Of The Talus, Posterior View

Description

Talus body anatomy dominates this posterior view, with the posterior process forming the inferior margin and the posterior articular surface facing toward the calcaneus. Medially and laterally, the posterior process separates into the medial and lateral tubercles, creating a central sulcus that continues as the groove for the tendon of flexor hallucis longus. Superior to the posterior process, the trochlear surface of the talar body curves toward the ankle mortise, while the more inferior contour blends into the posterior facet that participates in the subtalar joint. Bony relief is crisp. Posterior talar morphology matters whenever heel pain localizes to the back of the ankle or when plantarflexion provokes symptoms. Hypertrophy or an unfused accessory ossification center at the lateral tubercle (os trigonum) can narrow the posterior ankle recess and irritate the flexor hallucis longus within its groove, a common mechanism in posterior ankle impingement seen in ballet dancers and soccer players. The fixed posterior perspective makes the medial versus lateral tubercle relationship easy to teach and supports preoperative discussions for posterior ankle arthroscopy or open excision, where misidentifying the flexor hallucis longus groove risks tendon injury and incomplete decompression. Use this illustration in gross anatomy and musculoskeletal anatomy labs when introducing the tarsal bones, and in orthopedic or sports medicine materials covering os trigonum syndrome, posterior process fractures (Shepherd and Cedell variants), and subtalar joint landmarks. It also fits radiology teaching files to correlate with lateral ankle radiographs and CT reconstructions that assess the posterior process and the flexor hallucis longus tunnel. Anatomical accuracy verified by SciePro's Medical Advisory Board.