Navicular bone

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navicular bone is a small bone found in the legs of most mammals.

Video Navicular bone

Anatomi manusia

The navicular bone in humans is one of the tarsal bones, found in the legs. Its name comes from the resemblance of a human bone with a small boat, which is caused by a highly concrete proximal articular surface. The term navicular bone or the navicular bone of the hand was formerly used for the scaphoid bone, one of the carpal bones of the wrist.

The navicular bone in humans is located on the medial side of the leg, and articulates proximal to the talus, distal with the cuneiform bone three, and laterally with the cube.

This is the last leg bone to begin hardening and is not likely to do so until the end of the third year of girls and the fourth year of the boys, although large variations have been reported.

The posterior tibialis is the only muscle attached to the navicular bone. The main part of the muscle inserts into the tubercosis of the navicular bone. Navicular bone accessory can be found in 2-14% of the general population.

Clinical interests

The navicular man is not a commonly broken bone.

Maps Navicular bone

Horse anatomy

The horse has a sesamoid bone called navicular bones, located within the nails, located in the palmar aspect of the coffin joint between the second phalanx and the third phalanx (coffin bone). The navicular bone on the horse is supported by a larynx lamoum sesamoidean and two loinamen sesamoidean collateral. The navicular exchange is located between the flexible surface of the navicular bone and the deep digital flexor tendons, which run between the exchange and the distal phalanx. The tarsal central bone in the hock of the horse is homologous and analogous to navicular bones in human feet, and thus the navicular bone on the horse is a distinct structure of the human eponymous epithelium.

The navicular region is an important structure in relation to inequality, especially in the forefoot, and is involved with a significant disease process called navicular disease or navicular syndrome. Recently, much of the original literature on navicular disease has been questioned, particularly the significance of radiographic changes as a single diagnostic criterion. The navicular syndrome may be responsible for as many as 1/3 of all cases of lameness in horses, but radiographic changes in the navicular bone do not always provide a definitive diagnosis. More recent imaging techniques have shown that damage to soft tissue in the region can be a significant contributor to inequality and that many causes can cause visible imbalances.

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See also

• Bone terminology
• Term for anatomical location
• Anatomy of the horse's front

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Note

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External links

• 3D models of printed navicular bones, free download in STL (Embodi3D.com) format

Source of the article : Wikipedia