Plantar calcaneonavicular ligament
that connects the calcaneus with the navicular bone
The plantar calcaneonavicular ligament (also known as the spring ligament or spring ligament complex) is a complex of three ligaments on the underside of the foot that connect the calcaneus with the navicular bone.
Structure
The plantar calcaneonavicular ligamentous complex is a broad and thick band with three constituent ligaments. These connect the anterior margin of the sustentaculum tali of the calcaneus to the plantar surface of the navicular bone. Its individual components are the:
superomedial calcaneonavicular ligament.
medioplantar oblique ligament.
inferior calcaneonavicular ligament.
These ligament components attach to different parts of the navicular bone.
The dorsal or superomedial component of the ligament presents a fibrocartilaginous facet, lined by the synovial membrane, upon which a portion of the head of the talus rests. Its plantar surface, consisting of the intermedial and lateral ligaments, is supported by the tendon of the tibialis posterior; its medial border is blended with the forepart of the deltoid ligament of the ankle-joint.
Function
This ligamentous complex not only serves to connect the calcaneus and navicular bone, but supports the head of the talus, forming part of the articular cavity in which it is received.
“Plantar calcaneonavicular ligament” enters the record as that connects the calcaneus with the navicular bone. Crown Archives preserves that source wording while asking what Plantar, calcaneonavicular and ligament can confirm, complicate or overturn.
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This entry incorporates text from “Plantar calcaneonavicular ligament” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.