Posterior Process Of The Talus, Inferior View

Description

Posterior process of the talus fills the frame from an inferior perspective, emphasizing the plantar aspect of the hindfoot just anterior to the calcaneus. Medial and lateral tubercles project on either side of a central sulcus (groove) that runs anteroposteriorly along the underside of the talus. The lateral tubercle lies posterolateral, while the medial tubercle sits posteromedial, together forming the posterior margin of the talar body and outlining the osseous channel that guides the flexor hallucis longus tendon as it passes toward the plantar hallux. Posterior ankle pain often localizes to this anatomy. A prominent lateral tubercle (often termed Stieda process) or a separate ossicle (os trigonum) can narrow the posterior recess and contribute to posterior ankle impingement in dancers, soccer players, and patients with repeated forced plantarflexion. The same groove is a common site of flexor hallucis longus tenosynovitis, and inferior-view orientation helps clarify why the tendon can be pinched between the talus and calcaneus during plantarflexion. Fractures of the posterior process, including Shepherd (lateral) and Cedell (medial) patterns, are frequently missed on initial assessment and can mimic an ankle sprain. Small details matter. Orthopedic teaching files and foot and ankle surgery texts can use this illustration to anchor discussions of hindfoot arthroscopy, os trigonum excision, and approaches that protect the flexor hallucis longus in the fibro-osseous tunnel. Gross anatomy and osteology labs benefit from the inferior viewpoint when students are asked to identify the talar sulcus and distinguish the posterior process from the sustentaculum tali of the calcaneus. Anatomical accuracy verified by SciePro's Medical Advisory Board.