Plantar calcaneonavicular ligament
Encyclopedia
The plantar calcaneonavicular ligament (also known as the spring ligament) is a ligament on the underside of the foot that connects the calcaneus with the navicular bone.
of the calcaneus to the plantar surface of the navicular.
This ligament not only serves to connect the calcaneus and navicular, but supports the head of the talus
, forming part of the articular cavity in which it is received.
The dorsal surface of the ligament presents a fibrocartilaginous facet, lined by the synovial membrane, and upon this a portion of the head of the talus rests.
Its plantar surface 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.
The plantar calcaneonavicular ligament helps to maintain the medial longitudinal arch of the foot and by providing support to the head of the talus bears the major portion of the body weight. It is the main part of the spring ligament complex.
Structure
The plantar calcaneonavicular ligament is a broad and thick band of fibers, which connects the anterior margin of the sustentaculum taliSustentaculum tali
At the upper and forepart of the medial surface of the calcaneus is a horizontal eminence, the sustentaculum tali , which gives attachment to the plantar calcaneo-navicular ligament, tibiocalcaneal ligament, and medial talocalcaneal ligament.This eminence is concave above, and articulates with the...
of the calcaneus to the plantar surface of the navicular.
This ligament not only serves to connect the calcaneus and navicular, but supports the head of the talus
Talus bone
-External links:* *...
, forming part of the articular cavity in which it is received.
The dorsal surface of the ligament presents a fibrocartilaginous facet, lined by the synovial membrane, and upon this a portion of the head of the talus rests.
Its plantar surface 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.
The plantar calcaneonavicular ligament helps to maintain the medial longitudinal arch of the foot and by providing support to the head of the talus bears the major portion of the body weight. It is the main part of the spring ligament complex.
External links
- http://www.ithaca.edu/faculty/lahr/LE2000/ankle%20pics/5medankle-new.jpg