Exam 1: Bringing it all Together Flashcards
What are the synergy of actions that take place during the stance phases
- Dissipates the abrupt forces of loading
- Preserves stability
- Maintains forward progression
What does the coupling of events ensure during the swing phase
- Foot clearance
2. Maximizes progression
What are three functional tasks for the limbs during gait
- weight acceptance
- single limb support
- swing limb advancement
What phases are included in weight acceptance
initial contact and loading response
What are the accomplishments of weight acceptance
forward progression, shock absorption, stability
What phases are included in single limb support
Mid stance and terminal stance
What are the accomplishments of single limb support
stability and forward progression
What phases are included in swing limb advancement
Pre-swing, initial swing, mid swing, terminal swing
What is the position of the ankle during initial contact
neutral
What is the position of the knee during initial contact
0-5 degrees
What is the position of the hip during initial contact
20 degrees flexion
What is the position of the pelvis during initial contact
5 degrees forward rotation
What critical events occur during initial contact
heel first contact
What muscle activity occurs during initial contact
Pretibials (TA, EDL, EHL)
quadriceps, hip extensors (Hamstrings, glute max, adductor magnust)
Are pretibials dorsiflexors or plantarflexors
dorsiflexors
Where does the most shock absorption occur at
the knee
Is the subtalar joint involved during initial contact
no
What is the position of the ankle during loading response
5 degrees plantar flexion
is the subtalar joint involved during loading response?
yes at 5 degrees eversion
What is the significance of the foot being in an eversion position
it is unlocked
what is the position of he knee during loading response
20 degrees flexion
What is the position of the hip/thigh during loading response
20 degrees flexion
What is the position of the pelvis during loading response
5 degrees of forward rotation, 4 degrees contralateral drop
What critical events occur during loading response
Heel rocker progression, controlled ankle plantar flexion, controlled knee flexion, hip stability
What muscle activity occurs during loading response
Pretibials, quadriceps, hip extensors, hip abductors
What is the position of the ankle during mid stance
5 degrees dorsiflexion
What is the position of the knee during mid stance
0-5 degrees flexion
What is the position of the hip during mid stance
extension to neutral
What is position of the pelvis during mid stance
moves to neutral, contralateral drop continues
What critical events occur during mid stance
Controlled ankle DF, knee extension, hip stabilization in the frontal plane