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A 3D reconstruction of the ankle joint focusing on the tarsal bones, whether for the right, left, or both, provides a detailed portrayal of the intricate skeletal framework connecting the lower leg to the foot. This model centers on the seven tarsal bones, with the talus and calcaneus taking prominence in the ankle joint proper. The talus, positioned superiorly, is depicted with its dome-shaped trochlea articulating with the distal tibia and fibula, forming the primary hinge of the ankle that allows dorsiflexion and plantarflexion. Its body, neck, and head are visible, with the head extending forward to connect with the navicular bone. Below the talus, the calcaneus, the largest tarsal bone, is shown as the heel’s foundation, its posterior prominence supporting body weight and its anterior facets articulating with the cuboid. The subtalar joint, between the talus and calcaneus, is highlighted, enabling inversion and eversion movements. The remaining tarsal bones—navicular, cuboid, and the three cuneiforms (medial, intermediate, and lateral)—are illustrated distally, forming the tarsus’s arch and linking to the metatarsals. The distal tibia, with its medial malleolus, and the fibula, with its lateral malleolus, frame the talus, creating a mortise-and-tenon-like structure stabilized by ligaments such as the deltoid medially and the lateral ligaments (anterior talofibular, calcaneofibular, and posterior talofibular) laterally. Minimal soft tissue is included, emphasizing the tarsal bones’ alignment and articulations. This 3D view underscores the ankle’s role in weight-bearing, stability, and mobility, offering critical insights into tarsal anatomy for understanding fractures, sprains, or deformities like flatfoot, and aiding in surgical or rehabilitative planning.
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