Determinants of Gait Flashcards
What is gait cycle?
Full completion of a single limb’s stance phase and swing phase
Stride Length?
Full gait cycle
Step length?
Length between one foot & opposite foot
Cadence?
Number if steps in a given amount of time
What can a wider step width mean?
Balance issues, peripheral neuropathy
What are some external forces creating torques?
Gravity & Ground reaction force
external forces = external moments
What generates internal forces to maintain equilibrium?
Muscle contractions
What is the equation for torque?
F*D
force * length of moment arm
What is torque?
the ability of any force to cause rotation about an axis
What is the GRF?
Ground reaction force
Equal in magnitude the force that the body applies to the floor through the foot
What are the 2 peaks in the GRF graph?
1st peak-period between initial contact and loading response
2nd peak- terminal stance and preswing phase
What are the external torque counterbalanced by?
Muscles (create internal torque)
What happens during single limb support?
Lateral shift of body mass, hip Abductors turn on to keep pelvis level and to maintain GRF
What can cause some anatomical mal-alignments of ?
Scoliosis, knee varus/valgus, increased rotation of hips, and posture
What kind of moments are created at the knee?
GRF force is just posterior to knee
Creates external flexion moment