Foot Flashcards
How many tarsal bones are there in the foot?
7
What is the heel bone?
Calcaneus
Which tarsal receives initial contact with the ground when walking?
Calcaneus
What landmark of the calcaneus is the attachment point for the spring ligament?
Sustentaculum Tali
What is the smooth surface of the talus?
Talar Dome
How is the talus located on the calcaneus?
Angled medially superiorly to the calcaneus and is supported by the spring ligament.
Which side of the foot is the navicular located?
Medial side of the mid foot
Which tarsal bone articulates with the anterior surface of the talus and the 3 cuneiforms distally and the cuboid laterally.
Navicular
Which tarsal is located lateral to the navicular?
Cuboid
How does the cuboid articulate with the other bones of the foot?
Articulates with the calcaneus proximally, distally to metatarsals 4 and 5, and 3rd cuneiform medially
What are the 3 cuneiforms?
Medial, intermediate, lateral OR 1,2,3
Which bone posteriorly articulates with the cuneiforms?
navicular
What is the name of the big toe?
Hallux
Which tarsals are considered the transition point from midfoot to the metatarsals?
Cuneiforms.
What is the function of the sesamoid bones located on the plantar side of the head of metatarsal 1?
Act as a pulley for the flexor muscles of the hallux during propulsion (toe off).
What are the 3 arches of the foot? What are their functions?
- Medial Longitudinal Arch
- Lateral Longitudinal Arch
- Transverse Arch
They act as a spring to absorb ground reaction forces.
Which 2 structures support the medial longitudinal arch?
Spring Ligament and Planar Fascia
Of the 2 longitudinal arches, which is more stable?
Lateral.
Which arch is supported by the long plantar ligament, short plantar ligament, bifurcate ligament, and the plantar fascia?
Lateral Longitudinal Arch
What creates the transverse arch of the foot?
Created by the bases of metatarsals 1-5
What are the extreme cases of excessively flat or high arches of the foot called? Why is this a problem?
Pes Planus = flat
Pes Cavus = high
The arch is not able to absorb forces which are hen transmitted to the ones of the legs and can cause stress fractures.