navicular bone

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navicular bone

na·vic·u·lar bone

(nă-vik'yū-lăr bōn)
A bone of the tarsus on the medial side of the foot articulating with the head of the talus, the three cuneiform bones, and occasionally the cuboid.


boat-shaped; applied to certain bones, such as the navicular bones of the horse's foot and human ankle.

navicular block
a specially carved block of wood in which a horse's foot is lodged to enable a radiograph of the navicular bone to be taken at a suitable angle.
navicular bone
1. the distal sesamoid bone of a horse's foot; it lies on the palmar side of the coffin joint and serves to change the direction of the deep digital flexor tendon as it inserts on the distal phalanx. Its palmar surface is covered with fibrocartilage, its dorsal surface with hyaline cartilage and its dorsal surface is pocked with a row of nutrient foramina.
2. (rare) the central tarsal bone.
navicular bursa inflammation
in the horse may contain Brucella abortus; a cause of intermittent lameness.
navicular disease
a chronic degeneration of the navicular bone in which there is damage to its flexor surface and the overlying flexor tendon in the front feet of horses. There may be an accompanying navicular bursitis and osteophyte formation. Characterized by intermittent lameness and pointing when the animal is standing. Called also podotrochlitis.
References in periodicals archive ?
The plantar pressure reduction was under navicular bone by 77% in control group.
5) The purposed mechanism for avulsion injury at the navicular bone involves repetitive cycling of compressive and twisting loads caused by forceful movements of the foot.
Remodeling of the navicular bone in response to exercise-a controlled study.
Imaging of the symptomatic type II accessory navicular bone.
Such areas include the apex of the lung, the axilla on a mammogram, sudden, severe headaches, the navicular bone, the head of the pancreas or the ovary.
Most equine veterinarians believe that the disease results when repeated stress cuts off blood flow to a small foot bone called the distal sesamoid, or the navicular bone.
However, another possibility would be a stress fracture of one of the tarsal bones (the long foot bones that extend from the toe joints or metatarsals) called the navicular bone.
This causes a great deal of pain to the animal as the tendons that are responsible for supporting the leg rub on one degenerating bone in particular, known as the navicular bone.
The accessory navicular (os tibiale externum) is a clinical diagnosis based on physical examination that finds a bony prominence on the navicular bone of the foot, with or without complaints.
Isolated bony involvement in navicular bone is even more-rare.
Melbourne midfielder Jack Trengove suffered a huge setback after his injury led to navicular bone fracture.