Lateral Tubercle On The Talus, Posterior View

Description

Talus posterior process anatomy centers on the lateral tubercle, which forms the lateral boundary of the sulcus for the flexor hallucis longus tendon on the back of the ankle. From this posterior perspective, the lateral tubercle sits lateral to the groove and opposite the smaller medial tubercle, together defining the posterior process between the posterior subtalar region and the posterior aspect of the trochlea tali. The cortical contour of the tubercle reads as a firm, posterolateral bony prominence, positioned inferior to the posterior margin of the ankle mortise and proximal to the calcaneal articular surfaces. Posterior ankle pain often localizes to this exact corner of the talus. Repetitive plantarflexion, common in ballet, soccer, and downhill running, can provoke posterior ankle impingement when the posterior process or an accessory ossicle (os trigonum) crowds the posterior tibiotalar interval, and the flexor hallucis longus tendon can become irritated as it tracks within the adjacent groove. Scale and surface finish in this illustration make the groove-to-tubercle relationship unambiguous, so you can teach why tenderness may sit lateral to the FHL track while trigger symptoms during hallux flexion suggest tenosynovitis rather than an isolated bony lesion. Small landmark. Big consequences. Use this illustration in gross anatomy and orthopaedic modules on the hindfoot, in radiology teaching files when correlating with lateral ankle radiographs or CT of the posterior talus, and in surgical education materials for posterior ankle arthroscopy or os trigonum excision where accurate localization of the posterolateral talar process matters for portal planning and avoidance of the FHL tendon. Anatomical accuracy verified by SciePro's Medical Advisory Board.