Gait

Question 1

Initial Contact

Answer 1

Hip: 25˚F- Stabilised by extensor activity of HS and Glutes

Knee: 0 - 5˚F -Stabilised by co-contraction of Quads & HS
Ankle: 0 (90) ˚ Ankle pre-tibial

DF to position for contact

Question 2

Loading response

HS > FF

Answer 2

Hip: 25F˚

• Hip ABD stabilise pelvic drop in frontal plane
• Hip E counteract trunk and hip flexion

Knee: 0-15˚ F
Quads control knee F providing shock absorption

Ankle: 0-10˚ PF
Ankle DF decelerate foot drop
Tib Ant/Post eccentrically decelerate pronation

Question 3

Midstance

FF > midstance

Answer 3

Hip: 25-0˚ F
Hip ABD minimises pelvic drop in frontal plane

Knee: 15-0˚ F
Quads resist knee flexion until COG passes over BOS, then they are silent

Ankle: 10 PF to 5 DF˚
Soleus and gastroc eccentrically controls tibial forward progression

Question 4

Midstance

midstance > HO

Answer 4

Hip: 0-10/15 E˚
Brief burst from hip F resisting hip E
TFL active to resist pelvic drop

Knee: 0-5˚ F
Minimal quad or HS (passive tension/slight eccentric hold)

Ankle: 5˚ DF
Ankle PF breaks tibial translation & contribute to passive tension to raise heel

Question 5

Pre-swing

Answer 5

Hip: 20-0˚ E
Hip flexion via momentum and gravity with ADD longus & Rec Fem
ADD stabilise WS across midline to other foot

Knee: 5-40˚ F
Rec Fem restrain passive knee F

Ankle: 5 DF - 20 PF
Ankle PF passive tension facilitates knee F and active power generation

Question 6

Initial swing

TO

Answer 6

Hip: 15˚ F
Hip flexors flex hip
ADD longus brings leg towards midline

Knee: 60˚F

Ankle: 10˚ PF
Tib Ant DF

Question 7

Mid swing

Answer 7

Hip: 25˚ F
Hip flexors with momentum

Knee: 25˚ F
HS deceleration of knee F (knee E from tibial forward momentum)

Ankle: 0˚
Tib Ant concentrically contract

Question 8

Terminal swing(MS - decelleration)

Answer 8

Hip: 25˚ F
HS decelerate forward swing of leg

Knee: 0˚ Quads contract to extend knee in prep for IC

Ankle: 0˚
DF contract to prep foot for IC