| Plantar calcaneonavicular ligament | |
|---|---|
 Ligaments of the medial aspect of thefoot. (Plantar calcaneonavicular ligament labeled at bottom center.) | |
 Ligaments of the sole of the foot, with the tendons of the peronæus longus, tibialis posterior and tibialis anterior muscles. (Plantar calcaneonavicular ligament labeled at right, second from the bottom.) | |
| Details | |
| From | calcaneus |
| To | navicular |
| Identifiers | |
| Latin | ligamentum calcaneonaviculare plantare |
| TA98 | A03.6.10.203 |
| TA2 | 1937 |
| FMA | 44254 |
| Anatomical terminology | |
Theplantar calcaneonavicular ligament (also known as thespring ligament orspring ligament complex) is a complex of three ligaments on the underside of the foot that connect thecalcaneus with thenavicular bone.
The plantar calcaneonavicular ligamentous complex is a broad and thick band with three constituent ligaments. These connect the anterior margin of thesustentaculum tali of thecalcaneus to the plantar surface of thenavicular bone.[1][2] Its individual components are the:
These ligament components attach to different parts of the navicular bone.[2]
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 thetibialis posterior; its medial border is blended with the forepart of thedeltoid ligament of theankle-joint.
This ligamentous complex not only serves to connect thecalcaneus andnavicular bone, but supports the head of thetalus, forming part of the articular cavity in which it is received. It helps to maintain themedial longitudinal arch of thefoot.[1] By providing support to the head of the talus, it bears most of the body weight in a normally functioning foot.
Asprain to the plantar calcaneonavicular ligament can result inflatfoot deformity, which can impairmobility.
This article incorporates text in thepublic domain frompage 355 of the 20th edition ofGray's Anatomy(1918)
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