Quiz 3.4

Question 1

Ankle Motion

Answer 1

3 DOF
Plantar/dorsiflexion (Sagittal)
Eversion/Inversion (Frontal)
Abduc/adduct (Transverse)
Pronation/supination (Combo movement)

Question 2

Functions of ankle

Answer 2

Plantarflexion to produce propulsive force
Acts as shock absorber and transfer force up leg

Question 3

Closed chain

Answer 3

Max articulation of bones
Provides more stability and rigidity
SEE table for bone movements

Question 4

Tibiotalar joint

Answer 4

“Ankle”
Junction of tibia shank and talus
Plantar and dorsiflexion

Question 5

Talus

Answer 5

Weight bearing dense bone link between tibia and foot
Has no muscular attachment to shank

Question 6

Talocrural

Answer 6

Fibula, tibia, talus
“Mortise” joint
Small articular surface
Body weight forces talus into the mortise

Question 7

Subtalar

Answer 7

Junction of talus and calcaneus
Provides weight bearing and allows for frontal and transverse plane mobility to ankle (allows for inversion/eversion)

Question 8

Midtarsal

Answer 8

Junction of 2 articulations
Talonavicular and calcaneocuboid
Contributes to shock absorption of midfoot

Question 9

Metatarsophalangeal joint

Answer 9

Junction of metatarsal heads and proximal phalanges
Allows foot to roll over toes during terminal stance and ore swing gait phases

Question 10

Transverse tarsal joint

Answer 10

Functionally linked to subtalar joint
Help tune metatarsals to surface irregularities
Pron/supination
Talonavicular joint
Calcaneocuboidal joint

Question 11

Ligaments of the ankle

Answer 11

Anterior Talofibular
Posterior talofibular
Calcaneofibular
Tibiocalcaneal, tibionavicular, tibiotalar
Fibular collateral ligaments

Question 12

What ligament limits likelihood of sprain

Answer 12

Anterio talofibular ligament
**Go over other sprains too*

Question 13

Rolling ankle

Answer 13

Straining, stretching, or tearing of ligaments
Lateral sprain most common (inversion)
Repeated sprains lead to increased ligament laxity

Question 14

Dorsiflexor muscles

Answer 14

Tibialis anterior
Extensor hallucis longus
Extensor digitorum longus
peroneus longus
peroneus brevis

Question 15

Plantar flexor muscles

Answer 15

Soleus
Gastrocnemius
Tibialis posterior
Flexor digitorum longus
flexor hallucis longus

Question 16

Invertor muscles

Answer 16

Medial to AOR
Tibialis anterior & posterior
Extensor hallucis longus
Flexor digitorum longus
Flexor hallucis longus
soleus

Question 17

Evertor muscles

Answer 17

Lateral to AOR
Extensor digitorum longus
Peroneus tertius, longus, & brevis
Gastrocnemius

Question 18

Retinaculums

Answer 18

Superior Inferior extensor
Flexor
Maintain the position of tendons

Question 19

Malleoli

Answer 19

Medial and lateral
structures like tendons pass behind to keep line of action as plantar/toe flexors

Question 20

Fascia

Answer 20

Connective tissue supporting arch/bottom of foot
Maintains longitudinal arch of foot especially during locomotion
Elongates during contact to absorb force
Locks foot in rigid state to push off

Question 21

Medial Longitudinal arch

Answer 21

Supported by active and passive mechanisms
Collapse when weight bearing

Question 22

Lateral longitudinal

Answer 22

Disappears when bearing weight

Question 23

Transverse

Answer 23

Metatarsals, across foot horizontally

Question 24

What do muscles really do to bones

Answer 24

Pull on them with force so they accelerate bones