Talocrural Joint

Question 1

What three bones compose the ankle joint?

Answer 1

Distal end of the tibia, distal end of the fibula, and the talus

Question 2

What shape do the distal ends of the tibia and fibula resemble?

Answer 2

Three sides of a box

Question 3

How does the ankle joint fit with the talus when in a dorsiflexed position?

Answer 3

It fits snugly together due to the wider portion of the talus

Question 4

What type of joint does the ankle most resemble?

Answer 4

Synovial hinge joint

Question 5

What movements are permitted by the ankle joint?

Answer 5

• Dorsiflexion
• Plantarflexion
• A small amount of abduction
• A small amount of adduction
• A small amount of rotation

Question 6

What is the function of the deltoid ligament?

Answer 6

Joins the medial malleolus to the talus, navicular, and calcaneus

Question 7

What does the spring ligament connect?

Answer 7

Joins the talus to the calcaneus

Question 8

What is the role of the posterior talofibular ligament?

Answer 8

Joins the lateral malleolus to the talus

Question 9

What does the calcaneofibular ligament connect?

Answer 9

Joins the lateral malleolus to the calcaneus

Question 10

True or False: The ankle joint is supported by many ligaments.

Answer 10

True

Question 11

Fill in the blank: The ankle joint permits _______ and _______.

Answer 11

Dorsiflexion and plantarflexion

Question 12

What contributes to the stability of the ankle joint?

Answer 12

Many ligaments

Question 13

What is inversion in the context of foot movement?

Answer 13

Inversion is the foot movement that results in turning the plantar surface of the foot inward toward the midline.

Inversion is crucial for maintaining balance.

Question 14

What is eversion in the context of foot movement?

Answer 14

Eversion is the foot movement that causes the plantar surface of the foot to turn outward.

Eversion helps in balancing the foot on uneven surfaces.

Question 15

Why are inversion and eversion important?

Answer 15

These movements are important in helping us to maintain balance when walking on uneven surfaces or as we shift our weight from one foot to the other.

Balance is essential for activities like walking and running.

Question 16

What are the major joints that allow the foot to invert and evert?

Answer 16

• Joint between the talus and calcaneus
• Joint between the talus and the navicular
• Joint between the calcaneus and the cuboid

These intertarsal joints work in combination for foot mobility.

Question 17

Fill in the blank: The joint between the talus and calcaneus is important for _______.

Answer 17

[inversion and eversion]

This joint plays a key role in foot movement.

Question 18

What is inversion in the context of foot movement?

Answer 18

Inversion is the foot movement that results in turning the plantar surface of the foot inward toward the midline.

Inversion is crucial for maintaining balance.

Question 19

What is eversion in the context of foot movement?

Answer 19

Eversion is the foot movement that causes the plantar surface of the foot to turn outward.

Eversion helps in balancing the foot on uneven surfaces.

Question 20

Why are inversion and eversion important?

Answer 20

These movements are important in helping us to maintain balance when walking on uneven surfaces or as we shift our weight from one foot to the other.

Balance is essential for activities like walking and running.

Question 21

What are the major joints that allow the foot to invert and evert?

Answer 21

• Joint between the talus and calcaneus
• Joint between the talus and the navicular
• Joint between the calcaneus and the cuboid

These intertarsal joints work in combination for foot mobility.

Question 22

Fill in the blank: The joint between the talus and calcaneus is important for _______.

Answer 22

[inversion and eversion]

This joint plays a key role in foot movement.

Question 23

What surrounds the talocrural joint?

Answer 23

A fibrous capsule completely surrounds the talocrural joint

It attaches above to the articular margins of the tibia and fibula, and below to the talus.

Question 24

How does the capsule of the talocrural joint accommodate movement?

Answer 24

The capsule is thin and weak in front and behind to accommodate plantarflexion and dorsiflexion

This design allows for the necessary range of motion in the joint.

Question 25

What strengthens the talocrural joint capsule laterally and medially?

Answer 25

Collateral ligaments strengthen the capsule laterally and medially

These ligaments provide additional stability to the joint.

Question 26

Where is the capsule attached posteriorly in the talocrural joint?

Answer 26

The capsule is attached to the posterior tibiofibular ligament

This attachment contributes to the overall stability of the joint.

Question 27

What is the synovial membrane?

Answer 27

A membrane that extends between the tibia and fibula as far as the interosseous ligament of the inferior tibiofibular joint

It may be partially covered by an extension of the articular cartilage of the tibia and fibula.

Question 28

Where does the synovial membrane extend to?

Answer 28

It extends as far as the interosseous ligament of the inferior tibiofibular joint

It is located between the tibia and fibula.

Question 29

True or False: The synovial membrane is covered entirely by articular cartilage.

Answer 29

False

The synovial membrane may be covered in part by an extension of the articular cartilage.