Leg, Ankle, Foot Flashcards
Which bone in the leg bears 90% of bodyweight?
Tibia
Which bone is the lateral malleolus on?
Fibula
Which bone is the medial malleolus on?
Tibia
Which bone sits more posterior than medial malleolus and projects further distal?
Fibula
Which part of the foot are the tarsal bones located?
Midfoot and forefoot
What bones are located in the rearfoot?
Calcaneus and talus
What are the three arches of the foot?
- medial longitudinal
- lateral longitudinal
- transverse
T or F: There are no muscle attachments on the talus
True
Talus articulations
- inferior
- anterior
- medially/laterally
- inferiorly, the talus articulates with the three facets of the calcaneus
- anteriorly articulates with navicular
- medial and lateral aspects articulate with medial and lateral malleoli
T o F: The calcaneus is the largest and strongest bone in the foot
True
Calcaneus
- articulations
- cuboid anteriorly
Navicular
- articulations
- head of talus posteriorly
- cuneiforms anteriorly
Cuneiforms
- articulations
- first, second, and third metatarsals
T or F: The cuneiforms form the medial longitudinal arch
False. They form the transverse arch
Cuboid
- articulations
- calcaneus posteriorly
- lateral cuneiform medially
- 4th and 5th metatarsals anteriorly
What comprises the forefoot?
Metatarsals and phalanges
The metatarsal shafts are shaped how?
Concavely arched on plantar side
There are how many sesamoid bones just posterior to the first metatarsal head?
2
What tendon runs through the sesamoid bones just posterior to first metatarsal head?
Flexor hallicus longus
Which motions occur at the talocrural joint and which plane(s) do they occur in?
- plantarflexion/ dorsiflexion
- sagittal plane (but actually occur in obliquity)