Gait day 3 lecture (not finished)

When the ground reaction force is anterior to the axis during loading response, what motion is the external torque trying to produce at the hip (sagittal plane)?

Hip flexion

When the ground reaction force is anterior to the axis during loading response, what muscles are active at the hip to combat the external torque (sagittal plane)? What type of contraction is this?

hip extensors; isometric

When the ground reaction force is anterior to the axis during loading response, what motion is the external torque trying to produce at the knee (sagittal plane)?

knee flexion

When the ground reaction force is anterior to the axis during loading response, what muscles are active at the knee to combat the external torque (sagittal plane)? What type of contraction is this?

knee extensors (quads); eccentric

When the ground reaction force is anterior to the axis during loading response, what motion is the external torque trying to produce at the ankle (sagittal plane)?

plantarflexion

When the ground reaction force is anterior to the axis during loading response, what muscles are active at the ankle to combat the external torque (sagittal plane)? What type of contraction is this?

dorsiflexors; eccentric then concentric

What osteokinematic is occurring at the hip during loading response?

nothing- quiet

What osteokinematic is occurring at the knee during loading response?

knee flexion

What osteokinematic is occurring at the ankle during loading response?

plantarflexion then dorsiflexion

What muscles are active during initial contact-loading response?

erector spinae

glute max

glute med/min TFL

adductor longus/magnus

quads

hamstrings

pre-tibial muscles

tibialis posterior

What muscles are active during midstance?

Glute max (early)

glute med/min TFL

Quads

gastroc/soleus

posterior tib

fibularis L/B

FDL

Foot intrinsics

What muscles are active during terminal stance?

glute med/min TFL

gastroc/soleus

post tib

fibularis L/B

foot intrinsics

What muscles are active during preswing?

erector spinae (CL IC)

iliopsoas

rectus femoris

pre-tibial

post tib

fibularis L/B

foot intrinsics

What muscles are active during initial swing?

iliopsoas

sartorius

add B/L

rectus femoris

pre tibial

What muscles are active during midswing?

hamstrings

pretibial

What muscles are active during terminal swing?

glute max (late)

glute med

hamstrings

pre tibial

What is erector spinae