Foot And Ankle Flashcards
What is the primary weight-bearing bone of the leg?
Tibia
How does the size of the fibula compare to the tibia?
Much smaller than the tibia
What structure links the tibia and fibula along their lengths?
Interosseous membrane
List the functions of the foot and ankle region.
- Provides a stable base of support
- Provides a rigid lever for propulsion
- Absorbs the shock of weight bearing
- Conforms and adapts to uneven surfaces
- Important role in sensation / proprioception / balance
- Allows adjustment of line of gravity in standing
- Provides propulsion & restraint in walking
What is the shape of the distal tibia?
S-shaped like a rectangular box
What articulates with the lower surface of the distal tibia?
Talus
What is the bony protuberance on the lateral side of the fibula called?
Lateral malleolus
What are the three groups of bones in the foot?
- Tarsal bones
- Metatarsals (I to V)
- Phalanges
What are the proximal tarsal bones?
- Talus
- Calcaneus
What is the intermediate tarsal bone?
Navicular
Name the distal group of tarsal bones.
- Cuboid
- Cuneiforms (medial, intermediate, lateral)
What does the head of the talus articulate with?
Navicular
What is the largest tarsal bone?
Calcaneus
What is the prominent feature on the medial surface of the calcaneus?
Sustentaculum tali
What shape is the navicular bone?
Boat-shaped