$navicular fracture$

In the central navicular there is a region of watershed blood supply which predisposes the bone to stress fractures. Even though midfoot fractures are relatively uncommon injuries, tarsal navicular stress fractures represent up to one-third of all stress fractures.12 These fractures are at high risk of nonunion and. Branches of the medial plantar artery also supply the plantar surface of the bone. Fractures of the tarsal navicular bone are most commonly the result of either traumatic injury or undue stress, with the latter having a higher incidence in younger individuals and athletes. On the lateral aspect of the bone, small branches arise from the posterior tibial artery. Arterial Supply Ī branch of dorsalis pedis artery gives off three to five smaller branches which supply the navicular from the medial side. The first/medial cuneiform bone also is joined to the navicular by the medial cuneonavicular ligament. The dorsal cuneonavicular ligament and plantar cuneonavicular ligament are two ligaments that join each cuneiform bone to the navicular. This a muscle located within the deep compartment of the posterior aspect of the tibia and the tendon extends inferiorly around the medial malleolus to insert on the navicular tuberosity. The only muscle attachment on the navicular is the tendon of the tibialis posterior. These bones are stabilized by the plantar calcaneonavicular ligament (spring ligament) on the medial aspect and the lateral calcaneonavicular ligament (a component of the bifurcate ligament) on the lateral aspect. The skeletal structures included are the posterior articular surface of the navicular bone, and the anterior and middle articular surface of the calcaneus that articulate with the head and the anteromedial surface of the talus. It has some of the morphological characteristics of a ball and socket joint which led to its name. The acetabulum pedis is the common name for the talocalcaneonavicular joint and forms the subtalar articular complex along with the posterior talocalcaneal joint. The navicular is sometimes referred to as the keystone of the medial longitudinal arch of the foot, corresponding to its location at the peak of the arch and its role in maintaining the arch of the foot. There is a large protuberance on the inferomedial aspect of the navicular bone called the navicular tuberosity which is often simple to palpate in the area directly anteroinferior to the medial malleolus. Its posterior surface is concave and there are two faint ridges anteriorly to correspond with the articulation with the three cuneiform bones. The navicular is a small irregular bone with its shape being described as pyriform. It is the last bone of the foot to ossify fully. It is one of the five bones of the midfoot.

$navicular fracture$ $navicular fracture$

It is located on the medial aspect of the foot, next to the cuboid bone, anterior to the head of the talus and posterior to the cuneiform bones.

$navicular fracture$

The navicular bone is one of the seven bones which make up the tarsus of the Ankle and Foot.

$navicular fracture$

Navicular fracture