Hip Flashcards
What does the 20 Flexion achieve in initial contact at the hip?
Ensures heel contact
What is the arc of motion at the hip during loading response?
Maintain 20 Flexion
What does maintaining 20 Flexion at the hip during loading response accomplish?
Weight bearing stability
What is the arc of motion at the hip during mid-stance?
20 Flexion - 0
What does the 20 degrees of hip extension during mid-stance accomplish?
Progression of COM over BOS
single limb stability
What is the arc of motion at the hip during terminal stance?
0 - 20 extension
What does the 20 degrees of hip extension in terminal stance accomplish?
Progression of COM beyond BOS
Allows normal step/stride length
What is the arc of motion at the Ho during pre-swing?
20 extension - 0
What does the 20 degrees of hip Flexion at pre-swing accomplish?
Limb advancement initiation
Passive knee extension
What is the arc of motion at the hip during initial swing?
0 - 10 Flexion
What does the 10 degrees of hip Flexion accomplish in initial swing?
Limb advancement
What is the arc of motion at the hip in mid-swing?
10 - 20 Flexion
What does the 10 degrees of hip Flexion in mid-swing accomplish?
Continued limb advancement.
What is the arc of motion at the hip in terminal swing?
Maintain 20 Flexion
What does maintaining 20 degrees of hip Flexion in terminal swing accomplish?
Completing limb advancement
Ensures normal step/stride length
What is the frontal plane motion at the hip in initial contact?
Neutral
What is the frontal plane motion of the hip during loading response - midstance?
Neutral to 3-5 Adduction
What is the frontal plane motion of the hip during terminal stance?
Neutral
What is the objecting of frontal plane motion at the hip?
Relatively level pelvis assists in maintaining weight bearing stability (hip abductors)
What is the transverse plane motion at the hip in loading response - midstance?
Hip internal rotation
What is the transverse plane motion at the hip during midstance - terminal stance?
Hip external rotation to neutral
What is the moment at the hip during loading response?
Flexion moment
What is the muscle action at the hip during loading response?
Hip extensors (isometric)
What is the moment at the hip during early midstance?
Reducing hip Flexion moment
What is the muscle action at the hip during early midstance?
Hip extensors (concentric)
What is the moment and muscle action at the hip during late midstance?
Neutral moment
No muscle action
What is the moment at the hip during terminal stance?
Hip extension moment
What is she muscle action at the hip during terminal stance?
Resisted passively by anterior hip capsule
What is the moment at the hip during pre-swing?
Reducing hip extension moment
What is the muscle action at the hip during pre-swing?
Concentric hip flexors
What is the moment at the hip during initial swing?
Hip extension moment
What is the muscle action at the hip during initial swing?
Hip flexors (concentric)
What is the moment at the hip during mid-swing?
Hip extension moment
What is the muscle action at the hip during mid swing?
Hip flexors (concentric)
What is the moment at the hip during terminal swing?
Hip extension moment
What is the muscle action of the hip during terminal swing?
Gluteus maximus isometric
adductor Magnus isometric
hamstrings eccentric
What is the frontal plane moment on the hip during loading response to terminal stance?
Hip adduction moment
What muscles resist the hip adduction moment during loading response to terminal stance?
Gluteus medius and gluteus maximus and tensor fascia latae
What is the moment at the hip during loading response to terminal stance in the transverse plane?
Internal rotation moment
What muscles resists the hip internal rotation moment during loading response to terminal stance?
Gluteus maximus and piriformis and deep hip rotators
What is the arc of motion at the hip in initial contact?
20 Flexion
