2. Gait: Loading Response
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17 Terms
Loading Response limb support?
2x limb support
What rocker occurs during Loading Response?
Heel rocker
What phase is the contralateral limb in during Loading Response?
Pre-Swing
What is the critical event during Loading Response?
Calcaneal eversion
Loading Response
sagittal plane
GRFs
hip: anterior → ext.
knee: posterior → ext.
ankle: posterior → DF
What is the pelvic tilt in the sagittal plane during Loading Response?
Anterior pelvic tilt, 14°
trunk neutral
What is the hip position and moment chain at Loading Response (sagittal plane)?
25° flexion
GRF: anterior
EM: Hip flexion
IM: Hip extensors (hamstrings + glute max), CONCENTRIC
What is the knee position and moment chain at Loading Response (sagittal plane)?
15° flexion
GRF: posterior
EM: Knee flexion
IM: Vasti (quads), ECCENTRIC to control flexion
What is the ankle position and moment chain at Loading Response (sagittal plane)?
5° PF
GRF: posterior
EM: PF
IM: DF (pretibials: Tib Ant., EDL, EHL, Fib Tertius), ECCENTRIC to control PF
What happens to the MTP joints during Loading Response (sagittal plane)?
flexion → neutral
Loading Response
Frontal plane
GRFs
hip: medial
knee: just medial
ankle: lateral
What is the frontal plane moment chain at the hip during Loading Response?
GRF: medial to hip
EM: Hip adduction
IM: Hip abductors, ECCENTRIC to minimize contralateral pelvic drop.
What is the frontal plane moment at the knee during Loading Response?
GRF: just medial to knee
EM: varus <>
What is the frontal plane moment chain at the subtalar joint during Loading Response?
GRF: lateral to heel
EM: Subtalar eversion/pronation
IM: Tib Ant + Tib Post, ECCENTRIC
What is the pelvic rotation in the horizontal plane during Loading Response?
Forward rotation, 3–5° max
What is the hip rotation and moment chain during Loading Response (horizontal plane)?
IR → ER ECCENTRICALLY via piriformis & glute max
What is the knee rotation in the horizontal plane during Loading Response?
IR 5° max
Note 
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