Navicular Bone, Lateral View

Description

Seen in lateral profile, the tarsal navicular (scaphoid) sits on the medial side of the midfoot, distal to the talar head and proximal to the three cuneiforms, forming the keystone of the medial longitudinal arch. Posteriorly, the talus rests superior to the calcaneus, while anteriorly the metatarsals and phalanges extend distally in alignment with the midfoot. A blue and white overlay likely delineates the talonavicular and naviculocuneiform articular cartilage, clarifying joint margins and congruence. Bony contours of the navicular tuberosity project medially, even when viewed from the side. Lateral views like this are the fastest way to teach how the talus, calcaneus, and navicular cooperate to shape the hindfoot and support the arch during stance. The talonavicular joint is a key component of the transverse tarsal (Chopart) joint, and loss of congruity here can accompany hindfoot valgus and adult acquired flatfoot from posterior tibial tendon dysfunction, which inserts on the navicular tuberosity. Stress fracture of the navicular body is another classic concern in runners, and this perspective helps orient the clinician to dorsal versus plantar surfaces and the joint lines that can be tender on exam. Small bone, big consequences. Use this illustration for gross anatomy labs, podiatry and orthopaedic teaching modules, and radiology correlation when introducing oblique foot radiographs and CT of the midfoot. It also fits surgical education on midfoot arthrodesis planning, where understanding talonavicular and naviculocuneiform joint surfaces guides fusion positioning and screw trajectory. Anatomical accuracy verified by SciePro's Medical Advisory Board.