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In the human body, the tarsus (pl.: tarsi) is a cluster of seven articulating bones in each foot situated between the lower end of the tibia and the fibula of the lower leg and the metatarsus. It is made up of the midfoot ( cuboid , medial, intermediate, and lateral cuneiform , and navicular ) and hindfoot ( talus and calcaneus ).
At the foot end, within the tarsus, the talus articulates with the calcaneus (heel bone) below, and with the curved navicular bone in front; together, these foot articulations form the ball-and-socket-shaped talocalcaneonavicular joint. The talus is the second largest of the tarsal bones; [4] it is also one of the bones in the human body with ...
In the foot—the first metatarsal bone usually has two sesamoid bones at its connection to the big toe (both within the tendon of flexor hallucis brevis). [10] One is found on the lateral side of the first metatarsal while the other is found on the medial side. In some people, only a single sesamoid is found on the first metatarsal bone.
In humans, the calcaneus is the largest of the tarsal bones and the largest bone of the foot. Its long axis is pointed forwards and laterally. [2] The talus bone, calcaneus, and navicular bone are considered the proximal row of tarsal bones. [3] In the calcaneus, several important structures can be distinguished: [3]
There are a total of 8 bones in the legs and 52 in the feet. Femur (2) Patella or kneecap (2) Tibia (2) Fibula (2) Foot (52 bones in total, 26 per foot) Tarsus. Calcaneus or heel bone (2) Talus (2) Navicular bone (2) Medial cuneiform bone (2) Intermediate cuneiform bone (2) Lateral cuneiform bone (2) Cuboid bone (2) Metatarsals (10)
In Man's foot, it is the navicular. Some early land vertebrates had more than one (up to three) os centrale per hand or foot (plural "(ossa) centralia"). Distal bones, one per finger / toe at the base of each metacarpal or metatarsal. In mammals, the 4th and 5th fuse. In the horse, the first is lost.
The arches of the foot, formed by the tarsal and metatarsal bones, strengthened by ligaments and tendons, allow the foot to support the weight of the body in the erect posture with the least weight. They are categorized as longitudinal and transverse arches .
There are three points of articulation between the two bones: two anteriorly and one posteriorly. The three articulations are known as facets, and they are the posterior, middle and anterior facets. [3] At the anterior and middle talocalcaneal articulation, convex areas of the talus fits on to concave surfaces of the calcaneus. [3] [4]