Posterior Process Of The Talus, Medial View

Description

Posterior process of the talus fills the frame in medial aspect, emphasizing the thick projection extending posteriorly from the talar body at the level of the posterior subtalar facet. The medial tubercle sits closer to the sustentaculum tali side of the hindfoot, while the lateral tubercle lies more laterally and posteriorly, separated by the sulcus for the tendon of flexor hallucis longus (FHL). From this viewpoint, the groove appears as a longitudinal channel running between the tubercles, with the posterior margin forming a palpable bony lip just inferior to the posterior articular surface of the trochlea. Clinically, this region matters whenever posterior ankle pain is evaluated, because an enlarged lateral tubercle (Stieda process) or an accessory ossicle (os trigonum) can narrow the posterior recess and contribute to posterior ankle impingement, classically aggravated by forced plantarflexion in dancers and soccer players. The medial perspective also helps differentiate a true fracture of the posterior process from a separate ossicle, and it clarifies why the FHL tendon can become stenotic or tenosynovitic as it courses between the tubercles before entering the fibro-osseous tunnel toward the hallux. Small details count here. Insertions along the posterior process, including attachments related to the posterior talofibular ligament laterally and components of the posterior talocalcaneal ligament inferiorly, provide landmarks used during hindfoot arthroscopy and open excision. Use this illustration in foot and ankle anatomy modules, radiology teaching files that compare lateral radiographs and CT with os trigonum variants, and operative guides addressing posterior ankle impingement and FHL tendinopathy. It also fits well in orthopedic and podiatric texts discussing talar fractures and subtalar joint approaches. Anatomical accuracy verified by SciePro's Medical Advisory Board.