Talus bone
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| Bone: Talus bone | |
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| Subtalar Joint | |
| Latin | Astragalus |
| Gray's | subject #63 266 |
| MeSH | Talus |
- See talus for other meanings of the word
The talus bone or astragalus of the ankle joint connects the leg to the foot.
Contents |
[edit] Anatomy
The talus is the second largest of the tarsal bones.
It articulates with the tibia, fibula, calcaneus, and navicular. This means that the talus is one of the bones in the human body with the highest percentage of its surface area covered by articular cartilage. It is also unique in that it has a retrograde blood supply. This simply means that arterial blood enters the bone at the distal end.
It occupies the middle and upper part of the tarsus, supporting the tibia above, resting upon the calcaneus below, articulating on either side with the lateral and medial malleoli, and in front with the navicular.
[edit] Use as dice
Due to the way that the talus bone is shaped, it can land in one of four positions. This fact led to the bone assuming a role as a form of die in games of chance and gambling, such as Knucklebones. [1]
[edit] Additional images
 Lateral view of the human ankle, including the talus |
 Bones of the right foot. Dorsal surface. |
 Bones of the right foot. Plantar surface. |
 Left talus, from above. |
 Left talus, from below. |
 Left talus, medial surface. |
 Left talus, lateral surface. |
 Skeleton of foot. Medial aspect. |
 Skeleton of foot. Lateral aspect. |
 Capsule of left talocrura articulation (distended). Lateral aspect. |
 Coronal section through right talocrural and talocalcaneal joints. |
 Oblique section of left intertarsal and tarsometatarsal articulations, showing the synovial cavities. |
[edit] References
- ^ Smith, William (1891). A Dictionary of Greek and Roman Antiquities. J. Murray, 799.
[edit] External links
- Illustration at orthoinfo.aaos.org
- Fractures of the Talus at mdmercy.com
- Norman/Georgetown lljoints (posterioranklejoint)
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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