PEDS100 Chapter Notes -Metatarsal Bones, Cuneiform Bones, Navicular Bone

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~ 1/6 of weight comes through fibula, rest is directed through fibula. Talus: 2nd largest bone in foot, easily palpated. Primary tibial articulation is between tibia and talus. (medial malleolus of tibia, lateral malleolus of fibula, with smooth superior trochlea of talus and medial and lateral extensions off talus. Calcaneus: (heel bone) easily palpated largest tarsal bone, easily palpated. most of weight transferred from tibia to calcaneus to ground. Cuboid: easily palpated. articulates with anterior, lateral surface of calcaneus. Navicular: (means boat) easily palpated. medial side of ankle, articulates with anterior aspect of talus. Distal aspect of navicular articulates with three cuneiform bones. Cuneiform bones: three wedge-shaped bones in a row. Medial cuneiform, intermediate cuneiform(narrower than other 2 inferiorly forming metatarsal arch), lateral cuneiform. Proximally articulate with navicular, lateral cuneiform articulates with medial surface of cuboid. Metatarsal bones: form metatarsus(distal portion of foot) numbered 1-5 medially- First 3 metatarsal bones articulate with cuneiform bones, last 2 articulate with cuboid.

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