Ankle joint
The ankle joint is complex. It is made up of two joints: the true ankle joint and the subtalar joint: The true ankle joint is composed of 3 bones: the tibia which forms the medial (inside) portion of the ankle; the fibula which forms the lateral (outside) portion of the ankle; and the talus underneath. The true ankle joint is responsible for the up-and-down motion of the foot. The subtalar joint is under the true ankle joint and consists of the talus on top and calcaneus on the bottom. The subtalar joint is responsible for the side-to-side motion of the foot. The ends of the bones in the joints of the ankle are covered by cartilage. The major ligaments of the ankle are: the anterior tibiofibular ligament (connecting the tibia to the fibula), the lateral collateral ligaments (attaching the fibula to the calcaneus to give the outside of the ankle stability), and the deltoid ligaments on the inside of the ankle (connecting the tibia to the talus and calcaneus and providing medial stability to the ankle). In medicine, the ankle is the meeting of the leg and the foot; it is strictly the articulation of the tibia, fibula, and the talus. In popular usage, the ankle is often taken to be the ankle joint proper plus the surrounding region including the lower end of the leg and the tarsus, the start of the flat of the foot.

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ankle joint n ANKLE (1a)

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articulatio talocruralis.

Medical dictionary. 2011.

Look at other dictionaries:

  • ankle joint — noun a gliding joint between the distal ends of the tibia and fibula and the proximal end of the talus • Syn: ↑ankle, ↑mortise joint, ↑articulatio talocruralis • Derivationally related forms: ↑anklet (for: ↑ankle) …   Useful english dictionary

  • Lateral collateral ligament of ankle joint — Infobox Ligament Name = External lateral ligament of the ankle joint Latin = ligamentum collaterale laterale articulationis talocruralis GraySubject = 95 GrayPage = 351 Caption = The ligaments of the foot from the lateral aspect. Caption2 =… …   Wikipedia

  • collateral ligament of ankle joint lateral — ligamentum collaterale laterale articulationis talocruralis …   Medical dictionary

  • collateral ligament of ankle joint medial — ligamentum collaterale mediale articulationis talocruralis …   Medical dictionary

  • lateral ligament of ankle joint — ligamentum collaterale laterale articulationis talocruralis …   Medical dictionary

  • Ankle — Lateral view of the human ankle Latin articulatio talocruralis Gray s …   Wikipedia

  • Ankle — The ankle joint is complex. It is made up of two joints: the true ankle joint and the subtalar joint: The true ankle joint is composed of 3 bones: the tibia which forms the medial (inside) portion of the ankle; the fibula which forms the lateral… …   Medical dictionary

  • Joint, ankle — The ankle joint is complex. It is made up of two joints: the true ankle joint and the subtalar joint: The true ankle joint is composed of 3 bones: the tibia which forms the medial (inside) portion of the ankle; the fibula which forms the lateral… …   Medical dictionary

  • joint — /joynt/, n. 1. the place at which two things, or separate parts of one thing, are joined or united, either rigidly or in such a way as to permit motion; juncture. 2. a connection between pieces of wood, metal, or the like, often reinforced with… …   Universalium

  • ankle — /ang keuhl/, n. 1. (in humans) the joint between the foot and the leg, in which movement occurs in two planes. 2. the corresponding joint in a quadruped or bird; hock. 3. the slender part of the leg above the foot. [bef. 1000; ME ankel, enkel (c …   Universalium

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