ANKLE JOINT

Question 1

what is the articulation of the ankle joint?

Answer 1

between the talus and the tibia and between the talus and fibula

Question 2

what is the type of the join of the ankle joint?

Answer 2

synovial ginglymus structurally

diarthrosis functionally

Question 3

what are the motions of the ankle joint?

Answer 3

dorsiflexion, plantar flexion, abduction, adduction, eversion and inversion

Question 4

what makes the ankle joint more mobile laterally in the plantar flexed position?

Answer 4

shape of the articular surfaces between the tibial plafond and the trochlea tali

Question 5

this part of the ankle joint allows for a small amount of separation between the tibia and fibula?

Answer 5

the interosseous membrane

Question 6

the ankle joint is ____ to the sagittal plane and can be described this?

Answer 6

perpendicular

triplanar biomechanically

Question 7

what is the arterial supply of the ankle joint?

Answer 7

anterior tibial
peroneal
perforating fibular
posterior tibial artery

Question 8

what is the innervation of the ankle joint?

Answer 8

tibial nerve
deep peroneal nerve
sural nerve
saphenous nerve

Question 9

this the concavity that forms by the distal extremities of the tibia and fibula and the transverse tibiofibular ligament?

what bone fits into this concavity?

Answer 9

ankle mortise

talus

Question 10

this is a structure of the ankle joint that attaches at the articular margins of all surfaces of the ankle joint except the anterior trochlea tali

reinforced by ligaments

Answer 10

capsule

Question 11

this structure of the ankle joint lines all areas of the capsule

at the junction of the tibia and fibula inferiorly, it extends proximally to form a small recess in the interosseous tibiofibular ligament

this recess is large enough to create a synovial joint between the distal tibia and fibula

Answer 11

synovial membrane

Question 12

name the lateral collateral ligaments of the ankle joint?

Answer 12

posterior talofibular ligament
calcaneofibular ligament
anterior talofibular ligament

Question 13

name the medial collateral ligaments of the ankle joint?

Answer 13

posterior talotibial ligament
calcaneotibial ligament
anterior talotibial ligament

Question 14

of the ligaments in the ankle joint, which one is extracapsular ligament?

Answer 14

calcaneofibular ligament

Question 15

this ligament reinforces the ankle joint laterally

limits inversion of the rear foot

has 3 separate parts

Answer 15

lateral collateral ligament of the ankle

Question 16

this is the most commonly injured ligament in ankle sprains?

Answer 16

anterior talofibular ligaments

Question 17

what does the anterior talofibular ligament prevent?

Answer 17

prevents anterior displacement of the talus from the ankle mortise

prevents excessive ankle joint plantar flexion

Question 18

this ligament limits inversion of the rear foot and prevents excessive ankle joint dorsiflexion?

*also an extracapsular ligament and becomes taut when dorsiflexed and forms an angle of 105 degree with anterior talofibular ligament

Answer 18

calcaneofibular ligament

Question 19

this ligament prevents posterior displacement of the talus from the ankle mortise and prevents excessive ankle joint dorsiflexion?

Answer 19

posterior talofibular ligament

Question 20

this ligament of the ankle joint is rarely torn?

Answer 20

posterior talofibular ligament

Question 21

this ligament is also called the deltoid ligament?

reinforces the ankle joint medially

limits eversion of the rear foot so its injured with eversion force

Answer 21

medical collateral ligament of the ankle

Question 22

what are the two deep deltoid ligaments?

Answer 22

anterior talotibial ligament

deep posterior talotibial ligament

Question 23

what are the three superficial deltoid ligaments?

Answer 23

tibionavicular ligament
calcaneotibial ligament
superficial posterior talotibial ligament

Question 24

this ligament prevents anterior displacement of the talus from the ankle mortise and prevents excessive ankle joint plantar flexion?

Answer 24

anterior talotibial ligament

Question 25

this ligament prevents posterior displacement of the talus from the ankle mortise and prevents excessive ankle joint dorsiflexion?

Answer 25

deep posterior talotibial ligament

Question 26

this is the weakest of the deltoid ligaments?

Answer 26

tibionavicular ligament

Question 27

this is the strongest of the deltoid ligaments and limits eversion of the calcaneus?

Answer 27

calcaneotibial ligament

Question 28

this ligament prevents posterior displacement of the talus from the ankle mortise and prevents excessive ankle joint dorsiflexion?

Answer 28

superficial posterior talotibial ligament