6.0 Hip and Trunk Function During Gait Flashcards
What are the objectives of Initial Contact?
Ensures Heel contact
Neutral Trunk Position
What is the angle of the hip at the end of Loading Response?
Maintains 20° of Hip Flexion
What is the objective of the hip angle during loading response?
Facilitates the objective of weight bearing stability
What is the angle of the hip during Mid-Stance?
20° of Flexion
to
0° Neutral
What role does the hip play in the objectives tied to Mid-stance?
Hip Extension facilitates the objectives of
- Progression of COM over BOS
- Single Limb Stance Stability
What is the angle of the hip at the end of Terminal Stance?
0° Neutral
to
20° Extension
How does the angle of the hip aid in the objectives during Terminal Stance?
Hip Extension facilitates the objective of
- COM beyond the BOS
- Allows Normal Step/Stride Length
During pre-swing, What happens tot he angle of the hip?
20° of Extension
to
0° Neutral
What role does the hip angle play in the objective of Pre-swing?
Hip Flexion facilitates the objective of
- Limb Advancement initiation
- Passive Knee flexion
What is the hip angle at the end of Initial Swing?
0° Neutral
to
10° Flexion
How does the hip angle aid int he objective of Initial Swing?
Hip Flexion facilitates he objective of
1. Limb Advancement
During Mid-swing, what is the angle of the hip at the end of the phase?
10° of Flexion
to
20° of Flexion
How does the hip angle in Mid-swing help with the objectives of mid-swing?
Hip Flexion Facilitates the objective of
1. Continued Limb Advancement
What is the hip angle at the end of terminal Swing?
Maintains 20° of Flexion
What does the hip angle in terminal stance aid in the objectives tied to this phase?
Maintaining Hip Flexion during this phase facilitates the objective of
- Completing limb advancement
- Ensures normal Step/Stride Length
- Ensures Heel contact
What 2 factors ensure a normal step stride length in Gait?
Hip Extension during Terminal Stance
Hip Flexion Terminal Swing
During Initial contact, what is happening to the hip in the frontal plane?
Hip/Pelvis
-Neutral
Trunk
-Neutral
During Loading Response/Mid Stance, what is happening to the hip in the frontal plane?
Hip/Pelvis
-Neutral to 3-5° of Adduction
Trunk
-Side Bending 3-5°
During Terminal Stance, what is happening about the hip in the frontal plane?
Hip/Pelvis
-Neutral
Trunk
-Neutral
What is the objective of frontal plane hip kinematics>
a relatively level pelvis assists in maintaining a weight bearing stability (hip Abductors)
During loading response/Mid-stance, what is happening about the hip in Loading response?
Hip Internal Rotation
During Mid-stance/Terminal Stance, what is happening about the hip in the transverse plane?
Hip External Rotation
During Loading Response, what kind of moment is created about the hip?
Hip Flexion Moment
What muscle are activated during Loading response about the hip?
Hip Flexion Moment Facilitates
Hip Extension (Isometric)
- Gluteus Maximus
- Hamstrings
- Adductor Magnus
What moment is created at the beginning of midstance?
A reducing Hip Flexion Moment
What muscles are active during the early Midstance Hip Flexion Moment
Hip Flexor moment facilitates
Hip Extensors (Concentric)
- Gluteus Maximus
- Hamstrings
- Adductor Magnus
At the end of Midstance, what kind of moment is created at the hip?
No Moment
No Muscle activation
During terminal stance, what kind of moment is created about the hip?
Hip Extension Moment
In terminal stance, what muscles are activated due to the hip extension moment?
Hip Extension moment is resisted passively by
- Anterior Hip Capsule
- Tension of Anterior Structures
-No Hip flexors are active.
What kind of moment is created in Pre-swing about the hip?
a Reducing Hip Extension Motion
What muscles are active during Pre-swing about the hip?
Hip Extension moment…
Concentric Hip Flexors
- Rectus Femoris
- Adductor Longus
What moment is created during initial swing about the hip?
Hip Extension Moment (Gravity Driven)
What muscles are active about the hip during Initial swing?
Hip Extension moment driven by gravity creates…
Hip Flexor Moment (Concentric)
- Psoas
- Illiacus
What moment is created during mid-swing about the hip?
Hip Extension Moment driven by gravity
What muscles are active during mid-swing about the hip?
Hip Extension moment driven by gravity leads to…
Hip Flexors (concentric)
- Psoas
- Illiacus
What moment is created at the hip during Terminal Swing?
Hip Extension moment driven by gravity
What muscles are active during terminal swing about the hip
Hip extension moment driven by gravity leads to…
Hip Extensors
- Gluteus Maximus (Isometric)
- Gluteus Magnus (Isometric)
- Hamstrings (Eccentric)
During Loading-response to Terminal stance, what moment is created about the hip in the frontal plane?
Hip Adduction Moment
During Loading Response to Terminal Stance, what muscles active?
Hip Adduction moment leads to…
Hip Abductors active Resisted by -Gluteus Medius -Gluteus Maximus Upper Portion -Tensor Fascia Latae
(Eccentric Early Stance)
(Isometric Late Stance)
From Loading Response to terminal stance, what moment is created about the hip in the transverse plane?
Hip Internal rotation moment
What muscles are active to resist the hip internal rotation moment in the transverse plane about the hip?
Hip Internal rotation moment is resisted by
Hip External rotators
- Gluteus Maximus
- Piriformis
- Deep Hip Rotators
(Eccentric Early Stance)
(Isometric/concentric Late Stance)
What is the angle of the Hip at the end of initial contact?
20° of Flexion
