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Anatomy Exam 4 > Foot Joints > Flashcards

Flashcards in Foot Joints Deck (20):

What forms the arch of the foot?

Tarsal and metatarsal bones of the foot


What do the arches of the foot do?

1. Add to weigh bearing resilience
2. Shock absorption
3. Propel the lower limb during walking
4. Provide a spring in bodies step


What are the 3 arches of the foot?

1. Medial longitudinal arch
2. Lateral longitudinal arch
3. Transverse arch


What does the medial longitudinal arch consist of?

1. Calcaneus
2. Talus
3. navicular
4. Three cuneiforms
5. three medial metatarsals


Describe the medial longitudinal arch

1. Higher and more important than the lateral longitudinal arch
2. Supported by the spring (calcaneonavicular) ligament and the plantar aponeurosis


What does the lateral longitudinal arch consist of?

1. Calcaneus
2. cuboid
3. Lateral 2 metatarsals


Describe the lateral longitudinal arch

1. Flatter
2. Rests on ground while standing- disappears in a way
3. Supported by long plantar ligament, short plantar ligament, and plantar aponeurosis


What forms the transverse arch?

1. Cuboid
2. Three cuneiforms
3. Bases of all the metatarsals


What are the bones of the ankle joint?

1. Trochlea of talus
2. Tibia
3. Fibula


What are the ligaments of the ankle joint?

1. Deltoid ligament
2. Lateral ligament


Describe the deltoid ligament

Located on medial side of the joint with 4 bands
1. Anterior tibiotalar
2. posterior tibiotalar
3. Tibionavicular
4. Tibiocalcaneal


Describe the lateral ligament

Located on the lateral side of the ankle joint with 3 bands
1. Anterior talofibular
2. Posterior talofibular
3. Calcaneofibular


What are the actions of the ankle joint?

1. Dorsiflexion
2. Plantar flexion


What is a subtalar joint?

1. Plane type of synovial joint
2. Talus rests on the calcaneus
3. Permits inversion and eversion


What is a tarsometatarsal joint?

1.Plane type of synovial joint
2. Four anterior tarsal bones with the bases of the metatarsals


What is an intermetatarsal joint?

1. Plane type of synovial joint
2. Permits slight gliding movements
3. Articulation between the bases of the metatarsals


What is a metatarsal phalangeal joint?

1. Condyloid type of synovial joints
2. Permits flexion, extension, abduction, adduction and rotation
3. Articulation between the heads of the metatarsals and the bases of the proximal phalanges


What is an interphalangeal joint?

3. Hinge type of synovial joint
2. Permits flexion and extension


What happens in an ankle spring

-Lateral ligaments get damaged typically
Extensive inversion cause in most cases
-Ankle joint is the most frequently injured major joint
-Usually an inversion injury - causing damage to the lateral ligaments


What is a Potts fracture?

1. When foot forcefully everted
2. It often results in fracture of the medial and lateral malleoli, and fibula