Ankle 4

Question 1

• Subtalar (Talocalcaneal) Joint
  
  • Articulations

Answer 1

• Talus (concave)
• Calcaneus (convex)

Question 2

Subtalar (Talocalcaneal) Joint
- In Open chain kinematic
- Inversion

Answer 2

calcaneus roll medially and slide laterally on a fixed talus

Question 3

Subtalar (Talocalcaneal) Joint
- In Open chain kinematic
- Eversion

Answer 3

calcaneus roll laterally and slide medially on a fixed talus

Question 4

Subtalar Ratio

Answer 4

2:1 Inversion:Eversion

Question 5

• Medial Talocalcaneal Ligament
  
  • Connects the

Answer 5

medial tubercle of the talus with the sustentaculm tali

Question 6

Medial Talocalcaneal Ligament limits

Answer 6

anterior translation of the talus

eversion

Question 7

• Lateral Talocalcaneal Ligament
  
  • Connects the

Answer 7

lateral process of the talus to the lateral surface of the calcaneus

Question 8

Interosseous (Talocalcaneal) Ligament
- Has a

Answer 8

posterior and anterior band (cervical ligament)

Question 9

Interosseous (Talocalcaneal) Ligament stabilize the

Answer 9

subtalar joint

Question 10

• Subtalar Joint - Open Chain (Non WB)
  
  • the talus is stable, and the calcaneus and foot move

Answer 10

around the talus

Question 11

Subtalar Joint - Open Chain (Non WB)
Supination

Answer 11

Calcaneus
- PF, Inversion, Adduction

Question 12

Subtalar Joint - Open Chain (Non WB)
Pronation

Answer 12

• CalcaneusDF, Eversion, Abduction

Question 13

Subtalar Joint - Close Chain (WB)
Supination

Answer 13

• Calcaneus
  Inversion
• Talus
  DF and ABD
• Tibia
  slight ER

Question 14

Subtalar Joint - Close Chain (WB)
Pronation

Answer 14

• CalcaneusEversion,
• TalusPF, Adduction
• TibiaSlight IR

Question 15

• Transverse Tarsal Joint
  
  • Chopart or Midtarsal Joint formed by

Answer 15

• Talonavicular joint
• Calcaneocuboid joint
• Does pronation and supination

Question 16

Transverse Tarsal Joint linked mechanically with

Answer 16

STJ

Question 17

Transverse Tarsal Joint is the transitional link between the

Answer 17

hindfoot and forefoot

Question 18

Transverse tarsal joint Compensates the forefoot for

Answer 18

hindfoot position

(keeps forefoot flat on ground as hindfoot accommodate to terrain)

Question 19

Transverse Tarsal Joint important in

Answer 19

hollowing feet

Question 20

Talonavicular Ligament
Stabilizes ______
Limits _______

Answer 20

talonavicular joint
PF and inversion of navicular

Question 21

Bifurcate Ligament:
Calcaneonavicular ligament is ______ portion
Calcaneocuboid Ligament is _______ portion

Answer 21

Medial
Lateral

Question 22

Bifurcate Ligament
Both function to stabilize the _________
Taut in_______

Answer 22

midtarsal joint
supination

Question 23

• Spring Ligament
  
  • Connects navicular to

Answer 23

sustenaculum tali

Question 24

Spring ligament Functions as a ligamentous sling for the

Answer 24

• head of the talus and becomes taut during pronation

Question 25

Spring Ligament limits

Answer 25

navicular PF

Question 26

Spring Ligament supports

Answer 26

medial longitudinal arch

Question 27

- Long and short plantar ligaments - Long —> forms tunnel for

Answer 27

FL tendon

Question 28

Long and short plantar ligaments Both limits depression of

Answer 28

longitudinal arch

Question 29

With the calcaneus held fixed, pronation and supination occur primarily at the

Answer 29

midfoot

Question 30

When the calcaneus is free, pronation and supination occur as a summation across both the

Answer 30

rearfoot and midfoot

Question 31

Plantar Fascia/Aponeurosis Apex towards the

Answer 31

heel

Question 32

Plantar Fascia/Aponeurosis Base toward the

Answer 32

toes

Question 33

Plantar Fascia/Aponeurosis Functions

Answer 33

- Maintain longitudinal arch - Provide origins of superficial plantar muscles - Protect plantar vessels and nerves from compression

Question 34

Windlass Effect

Answer 34

Propulsion during toe off in gait Plantar fascia shortens

Question 35

Windlass Effect Great toe DF/Ext

Answer 35

winds (shortens) the plantar fascia → - shortens the distance b/w calcaneus and base of metatarsal → creates a mechanical advantage for propulsion

Question 36

Windlass Effect If this is limited

Answer 36

can’t wind (shorten) plantar fascia and will have less propulsion force in swing phase

Question 37

Tarsometatarsal Joints (LisFranc) Type of Joint _______ Contribute to ______

Answer 37

synovial plane joint hollowing and flattening of the foot

Question 38

Tarsometatarsal Joints (LisFranc) 2nd TMT joint is

Answer 38

stronger and its motion more restricted

Question 39

Tarsometatarsal Joints (LisFranc) Primary Function in WB

Answer 39

- Augment function of transverse tarsal joint - Regulate position of forefoot in relation to WB surface

Question 40

Tarsometatarsal Joints (LisFranc) Reinforced by numerous

Answer 40

dorsal, plantar, and interosseous ligaments