Lecture 51: Plantar Foot and Joints

Question 1

higher and more important arch

Answer 1

medial longitudinal arch

Question 2

what does the medial longitudinal arch consist of?

Answer 2

calcaneus
talus
navicular
three cuneiforms
three medial metatarsals

Question 3

what supports the medial longitudinal arch?

Answer 3

spring (calcaneonavicular) ligament

plantar aponeurosis

Question 4

during standing, this arch rests on the ground

Answer 4

lateral longitudinal arch

Question 5

what does the lateral longitudinal arch consist of?

Answer 5

calcaneus
cuboid
lateral two metatarsals

Question 6

what supports the lateral longitudinal arch?

Answer 6

long plantar ligament
short plantar ligament
plantar aponeurosis

Question 7

what forms the transverse arch?

Answer 7

cuboid
three cuneiforms
bases of all metatarsals

Question 8

what maintains the transverse arch?

Answer 8

all the ligaments and the peroneus longus tendon

Question 9

what is the keystone bone of the medial longitudinal arch?

Answer 9

talus

Question 10

talocrural joint = ankle joint

what bones?

Answer 10

trochlea of talus
tibia
fibula

Question 11

what type of joint is the ankle joint?

Answer 11

ginglymus or hinge type of synovial joint

Question 12

surrounds the ankle joint cavity

Answer 12

articular capsule

Question 13

located on the medial side of the ankle joint with 4 distinct bands

Answer 13

deltoid ligament

all the bands attach to the tibia

Question 14

located on the lateral side of the ankle joint with 3 distinct bands

Answer 14

lateral ligament

Question 15

which side of the ankle is weaker

Answer 15

lateral side

Question 16

range of dorsiflexion

Answer 16

35 degrees up

Question 17

range of plantarflexion

Answer 17

55 degrees down

Question 18

when is the ankle joint more stable

Answer 18

joint is very stable when dorsiflexed

Question 19

what type of joint is the subtalar(talocalcaneal joint)

Answer 19

plane type of synovial joint

Question 20

what action does the subtalar joint permit

Answer 20

inversion and eversion

Question 21

what type of joint is the talocalcaneonavicular

Answer 21

ball and socket

Question 22

what type of joint is the calcaneocuboid joint

Answer 22

plane

Question 23

what type of joint is the tarsometatarsal joint

Answer 23

plane type of synovial joint

Question 24

what type of joint is the intermetatarsal joint

Answer 24

plane type of synovial joint

Question 25

what type of movement does the intermetatarsal joint allow?

Answer 25

gliding movements

Question 26

what type of joint is the metatarsal phalangeal MP joint?

Answer 26

condyloid type of synovial joint

Question 27

what actions do the metatarsal phalangeal joints allow?

Answer 27

``` flexion extension abduction adduction rotation ```

Question 28

what type of joints are the interphalangeal joints?

Answer 28

hinge type of joint

Question 29

what type of motion do the interphalangeal joints allow?

Answer 29

flexion and extension

Question 30

why type of injury are ankle sprains usually cuased by?

Answer 30

inversion injuries causing damage to the lateral ligaments

Question 31

most commonly torn ankle ligament

Answer 31

anterior talofibular of the lateral ligament

Question 32

what causes a potts fracture

Answer 32

forceful eversion of the foot

Question 33

what is damaged in a potts fracture

Answer 33

the medial and lateral malleoli and the fibula NOT the deltoid ligament- that bad ass motherfucker never tears