Calcaneofibular Ligament of a Human Male as, Posterior View

Description

Posteriorly, the distal tibia lies medial and the distal fibula lies lateral, framing the talus at the talocrural (ankle) mortise. The calcaneofibular ligament descends from the apex of the lateral malleolus in an inferoposterior direction to insert on the lateral surface of the calcaneus, positioned posterior to the subtalar joint line and inferior to the fibular facet of the talus. Articular margins of the tibiotalar and subtalar joints are indicated by cartilage or joint space markings, clarifying the relationship between the ligament and the hindfoot articulations. Small nutrient foramina are visible on the bony surfaces. A clean bony landmark study. Lateral ankle stability is often taught as a triad of the anterior talofibular, calcaneofibular, and posterior talofibular ligaments, but the calcaneofibular component is the one that spans both the tibiotalar and subtalar joints. That anatomy explains why calcaneofibular injury in an inversion sprain correlates with subtalar instability and persistent hindfoot pain, and why stress testing in dorsiflexion can better tension this band than testing in plantarflexion. The posterior viewpoint also supports surgical and arthroscopic orientation by anchoring the ligament’s fibular origin to the lateral malleolar tip and its calcaneal insertion just posterior to the peroneal trochlea region. Orthopaedic and sports medicine educators can place this image alongside ankle sprain grading charts, Brostrom type repair diagrams, or radiology correlates for lateral malleolar avulsion patterns. It also fits well in gross anatomy and functional anatomy teaching modules on the talocrural and subtalar joints, where students need a clear spatial reference for lateral collateral ligament attachments on bone. Anatomical accuracy verified by SciePro's Medical Advisory Board.