foot ankle Flashcards
exam 2
what muscle helps maintain the shape of the foot by pulling on both longitudinal and transverse arch of the foot
adductor hallucis
What is the primary function of the foot?
Locomotion (primarily propulsion) and accommodation (shock absorption)
Accommodation is largely blunted with footwear.
How many bones and joints are in the foot?
26 bones and 30+ joints
What are the three portions of the foot?
- Hindfoot
- Midfoot
- Forefoot
Name the biggest joints of the foot.
- Talocrural
- Subtalar
- Transverse Tarsal
What is the purpose of the arches of the foot?
Support weight distribution between weight-bearing portions of the foot
What are the three arches of the foot?
- Medial longitudinal arch
- Lateral longitudinal arch
- Transverse arch
What type of support do the arches of the foot have?
Dynamic and passive support
What is the role of the plantar calcaneonavicular ligament?
Brace talus, assist in weight transfer, maintain longitudinal arch of foot
What are the major ligaments of the foot?
- Plantar calcaneonavicular ligament
- Long plantar ligament
- Plantar calcaneocuboid ligament
What are the two groups of muscles in the foot?
- Muscles of the sole (plantar surface)
- Muscles of the dorsum (dorsal surface)
What is the innervation of the muscles on the sole of the foot?
Plantar nerves
What is the innervation of the muscles on the dorsum of the foot?
Deep fibular nerve
How many layers are there in the muscles of the sole?
4 layers
What is the action of the abductor hallucis muscle?
Abduction of digit 1/hallux at MTP & IP joints
Fill in the blank: The big toe is also known as the _______.
HALLUX