Talocrulal joint ligaments

Question 1

What type of joint is talocrural?

Answer 1

hinge

Question 2

Is dorsiflexion or plantarflexion more stable. Why?

Answer 2

Dorsiflexion because anterior (wider) part of talus moves into pincer. In plantar flexion, the narrow posterior part of talus is in pincer

Question 3

What are two main ligamentous systems of the ankle joint?

Answer 3

Lateral and medial collateral (deltoid) ligament
Tibio-fibular ligaments (anterior and posterior)

Question 4

How many and name the lateral collateral ligaments of the ankle

Answer 4

3
ATFL: anterior talofibular ligament
CFL: calcaneoFibular ligament
PTFL: posterior talofibular ligament

Question 5

Which collateral ligament is the weakest?

Answer 5

ATFL: anterior talofiblular ligament

Question 6

Which collateral ligament is most often sprained?

Answer 6

ATFL: anterior talofibular ligament

Question 7

Which ligament is primary restraint against plantar flexion and inversion of foot?

Answer 7

ATFL: anterior talofibiular ligament

Question 8

Which tendon forms the floor of the peroneal tendon sheath and crosses both talo crural and subtaler joints/s

Answer 8

CFL: calcaneo fibular ligament

Question 9

When is the CFL relaxed?

Answer 9

when in plantar flexion

Question 10

When is CFL taut?

Answer 10

In dorsiflexion

Question 11

What movement does it prevent

Answer 11

stabilizes ankle laterally to prevent inversion

Question 12

Which is the strongest ligament?

Answer 12

PTFL: posterior talofibular ligament

Question 13

Does the PTFL ever get sprained or the source of chronic instability?

Answer 13

No

Question 14

Where does PTFL attach?

Answer 14

From the fibula it attaches onto nonarticulating portion of the posterior talus.

Question 15

Name the four medial collateral ligaments

Answer 15

Posterior tibiotalar ligament
Tibiocalcaneal ligament
Anterior tibiotalar ligament
Tibionavicular ligament

Question 16

How many fibrous sheets does the medial collateral ligaments break up into/

Answer 16

Two: deep and superficial

Question 17

Name the deep medial collateral ligaments

Answer 17

Anterior tibiotalar ligament
posterior tibiotalar ligament

Question 18

Name the superficial medial collateral ligaments

Answer 18

Tibionavicular ligament
Tibiocalcaneal ligament

Question 19

Are the deltoid ligaments strong/

Answer 19

Yes. in eversion injuries, the medial malleolus is typically fractured rather than the ligament rupturing

Question 20

Where do the supericial parts of the deltoid ligaments run?

Answer 20

from medial malleolus to the talus, calcaneus and navicular

Question 21

What are the distal tibiofibualar ligaments

Answer 21

Anterior tibiofibular joint
Posterior tibiofibular joint

Question 22

How is the dital tibiofibular joint formed/

Answer 22

by a convex surface of the medial side of the distal end of the fibula and a concave surface of the lateral side of the tibia

Question 23

What happens to the tibiofibular liagaments in dorsiflexion?

Answer 23

The posterior is taut and anterior is slack; reverse in plantar flexion

Question 24

Which tibiofibular ligament is injured more/

Answer 24

anterior tfl because there is more instability in plantar flexion