Ankle Critical Events And Muscle Actions

Question 1

CE: Initial Contact

Answer 1

Neutral foot position.

This facilitates the heel rocker.

Question 2

CE: Loading Response

Answer 2

0 Neutral - 5 degrees of Plantar Flexion

Question 3

CE: Mid-Stance

Answer 3

5 degrees of Plantar Flexion - 5 degrees of Dorsiflexion

10 degree arc of motion.

Question 4

CE: Terminal Stance

Answer 4

5 - 10 degrees of Dorsiflexion

5 degree arc of motion.

Question 5

CE: Pre-Swing

Answer 5

10 degrees of Dorsiflexion - 20 degrees of Plantar Flexion.

30 degree arc of motion

Question 6

CE: Initial Swing

Answer 6

20 - 5 degrees of Plantar flexion.

15 arc of motion. (In DF)

Question 7

CE: Mid-Swing

Answer 7

5 degrees of Plantar Flexion - 0 Neutral

5 degree arc of motion (In DF).

Question 8

CE: Terminal Swing

Answer 8

0 Neutral

Question 9

Muscle Action: Loading Response

Answer 9

Plantar Flexion Moment.

Eccentric Dorsiflexors
TA
EDL
EHL

Question 10

Muscle Action: Mid-Stance

Answer 10

Dorsiflexion moment.

Eccentric Plantar flexors
Gastric
Soleus

Question 11

Muscle Actions: Terminal Stance

Answer 11

Increasing Dorsiflexion moment.

Eccentric Plantar Flexors
Gastric
Soleus

Question 12

Muscle Actions: Pre-Swing

Answer 12

Reducing Dorsiflexion Moment

Reducing calf demand.

NO ACTION

Question 13

Muscle Actions: Initial Swing

Answer 13

Plantar Flexion Moment Gravity Driven.

Concentric dorsiflexors

Question 14

Muscle Actions: Mid-Swing

Answer 14

Plantar Flexion Moment Gravity Driven

Concentric Dorsiflexors

Question 15

Muscle Actions: Terminal Swing

Answer 15

Plantar flexion moment Gravity Driven

Isometric Dorsiflexion