Navicular bone

Scheme of the human foot bones: The number 3 denotes the scaphoid bone.

The navicular bone ("scaphoid") or os tarsi centrale is a short bone in the tarsus . In the older literature was scaphoid hand as navicular referred. A scaphoid fracture is much more common on the hand than on the foot.

It is located on the big toe or on the tibia . Close to the body there is a cavity that serves as a joint surface for the head ( caput tali ) of the ankle bone ( talus ). In the center there is a roughening ( tuberosity ossis navicularis ), which bends towards the inside of the foot, and far away from the body there are three joint surfaces for the three sphenoid bones ( ossa cuneiformia ), separated only by small protrusions . If the bone nuclei of the navicular bone fail to fuse , an external tibial bone arises .

In ruminants , the os tarsi centrale is fused with the os tarsale quartum to form the os centroquartale .

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  Drawing of a left scaphoid bone of the foot showing the articular surfaces

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  (View from
  left: front-side,
  right: back-center)

literature

• F.-V. Salomon: Bony skeleton. In: F.-V. Salomon et al. (Ed.): Anatomy for veterinary medicine. 2nd ext. Edition. Enke-Verlag, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 37-110.