The bony core is formed by the navicularand third digital bones.
The latter face articulates with the third and navicular bones.
A very important bursa, because it is so frequently inflamed in coffin-joint lameness, facilitates the gliding of the flexor tendon over the navicular bone before it becomes attached to the inferior face of the pedal or digital bone.
We should not use animals having faulty conformation of the feet for breeding, because the offspring of such individuals have an inherent tendency toward navicular and other foot diseases.
In navicular disease the bursa, flexor tendon, and navicular bone may become chronically inflamed.
When lameness is present, it may resemble that occurring in inflammation of lateral cartilages and navicular disease.
A case of naviculardisease involving one front foot.
The superior face shows two shallow cavities that are completed posteriorly by the superior face of the coffin or navicular bone.
It may accompany chronic diseases of the foot, such as navicular disease and side-bones.
The metatarsals, the navicular and cuboid, and the distal end of the fibula, remain free.
The navicular and the cuboid unite, and the distal end of the fibula is ankylosed with the tibia.
In the Ruminantia the cuboid and navicular are always united and so are the second and third cuneiforms, while in Cervulus all four bones are united together.
The astragalus has both the proximal and distal surfaces pulley-like, and articulates with the navicular and cuboid by two facets of nearly equal size.
The astragalus has pulley-like surfaces both proximally and distally, and articulates with the navicular and cuboid by two nearly equal facets.
Dislocation of the talus# from its articulations with the bones of the leg above and the calcaneus and navicular below, is a comparatively common injury, and results from a violent wrench of the foot.
The navicular and cuboid are rotated medially around the anterior ends of the talus and calcaneus respectively, and the tubercle of the navicular comes to lie close to the medial malleolus.
The soft parts to be divided are the tendo Achillis, the medial and posterior ligaments of the ankle, the plantar fascia, the calcaneo-navicular ligaments, and the tibialis posterior tendon.
Codman recommends taking pictures of the navicular by placing the two wrists of the patient in adduction, and of the lunate, in abduction.
The talo-navicular joint lies immediately behind the tuberosity of the navicular, and a line drawn straight across the foot at this level passes over the calcaneo-cuboid joint.
Navicular disease, that terror of every horse-owner, is without doubt largely induced by improper shoeing, coupled with the pernicious practice which I am now condemning, of cutting away the frog.
A), and never fuse into a complete cannon-bone; and the navicular and cuboid bones of the tarsus are separate.
Union of the navicular and cuboid, and sometimes the ectocuneiform bone, of the tarsus.
Lower articular surface of the astragalus divided into two nearly equal facets, one for the navicular and a second for the cuboid bone.
They are often seen in connection with contracted heels, ringbones, navicular disease, punctured wounds of the foot, quarter cracks, and occasionally as a sequel to founder.
Contracted heels, scratches, and navicular disease predispose to thrush, while by some a constitutional tendency is believed to exist among certain animals which otherwise present a perfect frog.
In the early stages ofnavicular disease the symptoms are generally very obscure.
The result, then, is that the coronet bone forces the navicular hard against the flexor tendon, which, in turn, presses firmly against the navicular as the force of the contracting muscles lifts the tendon into place.
One of the tendons is attached to the upper end of the short pastern, while the other passes down between the heels, glides over the under surface of the navicular bone, and attaches itself to the under surface of the coffin bone.
It extends forward underneath the navicular bone and perforans tendon, and protects these structures from injurious pressure from below.
There is nothing to encourage a favorable prognosis, and a not unusual termination is an anchylosis with either the navicular bone or the coronet.
Navicular disease is an inflammation of the sesamoid sheath, induced by repeated bruising or laceration, and complicated in many cases by inflammation and caries of the navicular bone.
If sidebones, ringbones, navicular disease, contracted tendons, or other diseases have been the cause of contracted heels, treatment will be useless until the cause is removed.
To avoid this error, it should be remembered that, when brought on by navicular disease, the action of the limb improves with exercise; also that horses of five years of age or less very rarely suffer from coffin-joint disease.
In young horses splints are sometimes mistaken for coffin-joint lameness or navicular disease.
We hope that it has also been noticed, that we do not propose to cure spavins, splints, navicular disease, or to restore the natural action of a horse where ossification of cartilage is well established.
The membrane of this important bone, in some cases of contraction, becomes ulcerated, and the bone itself may be decayed, or adhesion between the coffin-bone and the navicular and pastern may take place.
There is a pair of large nodular sesamoids behind the metacarpo-phalangeal articulation, and a single large transversely-extended sesamoid behind the joint between the second and third phalanx, called the "navicular bone.
The navicular and the external cuneiform bones are broad and flat.
Cervidae, the navicular and cuboid become fused into one bone; and there are even further fusions which will be referred to later as characteristic features of different groups.
In the ankle joint the astragalus either does not, or does only to a comparatively slight extent, articulate with the cuboid as well as with the navicular bone.
Edmonton, who pronounced it a case of navicular disease.
Hidden within the wings of the os pedis, and protected as it is by its tendinous covering and the yielding substance of the plantar cushion, the navicular bone is even less liable to fracture than either of the other bones of the foot.
Navicular Bone showing Lesions of Navicular Disease (a Case of Long-standing).
The flexor perforans tendon showed inflammatory softening, and was very nearly ruptured through at the level of the navicular bone.
The navicular bone and surrounding structures are not exempt.
The lower articulatory surface is formed by the third phalanx and the navicular bone combined.
This treatment of open joint, preventive as it is of arthritis, is also indicated in the case of open navicular bursa.
We thus find thenavicular bone fractured, together with one or both of the other bones of the foot, when the foot is run over by a heavy vehicle.
The navicular bone consists normally of compact and cancellated tissue arranged in certain proportions, the compact tissue without, and the cancellated within.
But above all, the disease most likely to be confounded with simple contraction is navicular disease.
B] In 1819 Moorcroft made it even plainer still that he was fully acquainted with what we now know asnavicular disease.
Both the navicular and coronary articulations were open.
Pressure on the navicular bone is diminished and tension on the flexor tendon is relieved by even slight volar flexion.
In the fore legs, navicular disease is differentiated by noting absence of contraction at the heel.
This is not a last resort expedient to be employed in cases where extensive lesions of the navicular structures exists.
I have known foals, born from defective parents, in which this condition was so strongly developed, that all men would at once pronounce them affected withnavicular disease, and such lameness was permanent.
Lameness is the primary indicator and a constant symptom which attends navicular disease wherever much structural change affects the infirm parts.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "navicular" in a variety of sentences. We hope that you will now be able to make sentences using this word.
