Foot Function

Question 1

inversion/eversion mainly comes from which joint

Answer 1

subtalar joint

Question 2

primary functions of the ankle-foot complex

Answer 2

-flexibility
-absorbs rotation + loading during weight bearing
-rigidity, lever for pushing

Question 3

open chain motion of the ankle-foot complex

Answer 3

pronation
-calcaneal abduction
-cancaneal eversion
-calcaneal dorsiflexion

Question 4

open chain pronation is a combination of which movements

Answer 4

-calcaneal abduction
-calcaneal eversion
-calcaneal dorsiflexion

Question 5

in open chain motion of the ankle-foot complex describe subtalar joint + lower limb movement

Answer 5

subtalar joint + lower limb move independently

Question 6

closed chain motion of the foot-ankle complex

Answer 6

pronation
-calcaneal eversion
-talar adduction
-talar plantarflexion

Question 7

closed chain pronation is a combination of which 3 movements

Answer 7

-calcaneal eversion
-talar adduction
-talar plantarflexion

Question 8

can the calcaneus DF/PF in weight-bearing (aka closed chain)?

Answer 8

NO
-talus helps with movement

Question 9

can the calcaneus DF/PF in open chain

Answer 9

YES
-in open chain, the calcaneus does all the movement, NOT the talus

Question 10

in closed chain motion of the ankle-foot complex describe subtalar joint + lower limb movement

Answer 10

interdependence of lower limb + subtalar joint

Question 11

function of ankle-foot complex during gait

Answer 11

absorbs lower limb rotation

Question 12

function of ankle-foot complex during gait-
PRONATION

Answer 12

mobility

Question 13

function of ankle-foot complex during gait-
SUPINATION

Answer 13

rigidity

Question 14

summary of closed chain motion of ankle-foot complex

Answer 14

-medial rotation of the tibia
-rear foot + midfoot pronation
-relative forefoot supination

Question 15

in closed chain motion of the ankle-foot complex, there is mobility of

Answer 15

hindfoot + midfoot

Question 16

in closed chain movement of ankle-foot complex…

Answer 16

talus causes tibia + fibula to move

Question 17

summary of motion cont.

Answer 17

-external rotation of the tibia
-supination of rearfoot + midfoot
-relative forefoot pronation

Question 18

foot is a ____

Answer 18

rigid lever

Question 19

tarsometatarsal joint function

Answer 19

motion during gait not necessary unless the forefoot cannot compensate for rearfoot motion

Question 20

tarsometatarsal joint function- which ray is the least mobile

Answer 20

2nd ray

Question 21

if the forefoot CANNOT compensate for rearfoot pronation…

Answer 21

the lateral border of the forefoot will come off the ground

therefore:
-1st + 2nd are forced into dorsiflexion
-4th + 5th will try to plantarflex

Question 22

MTP function

Answer 22

metatarsal break with heel rise (all extend at once)
-foot should be a rigid lever
-metatarsal heads glide in a plantar direction

Question 23

metatarsal heads glide in which direction

Answer 23

plantar direction

Question 24

plantar aponeurosis is an attachment of ____ to ____

Answer 24

heel to proximal phalanx

Question 25

plantar aponeurosis is stretched by ____

Answer 25

toe extension

Question 26

in the open chain (heel off the ground), plantar aponeurosis may cause

Answer 26

rearfoot supination