6.0 Hip and Trunk Function During Gait Flashcards

1
Q

What are the objectives of Initial Contact?

A

Ensures Heel contact

Neutral Trunk Position

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2
Q

What is the angle of the hip at the end of Loading Response?

A

Maintains 20° of Hip Flexion

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3
Q

What is the objective of the hip angle during loading response?

A

Facilitates the objective of weight bearing stability

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4
Q

What is the angle of the hip during Mid-Stance?

A

20° of Flexion
to
0° Neutral

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5
Q

What role does the hip play in the objectives tied to Mid-stance?

A

Hip Extension facilitates the objectives of

  1. Progression of COM over BOS
  2. Single Limb Stance Stability
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6
Q

What is the angle of the hip at the end of Terminal Stance?

A

0° Neutral
to
20° Extension

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7
Q

How does the angle of the hip aid in the objectives during Terminal Stance?

A

Hip Extension facilitates the objective of

  1. COM beyond the BOS
  2. Allows Normal Step/Stride Length
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8
Q

During pre-swing, What happens tot he angle of the hip?

A

20° of Extension
to
0° Neutral

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9
Q

What role does the hip angle play in the objective of Pre-swing?

A

Hip Flexion facilitates the objective of

  1. Limb Advancement initiation
  2. Passive Knee flexion
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10
Q

What is the hip angle at the end of Initial Swing?

A

0° Neutral
to
10° Flexion

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11
Q

How does the hip angle aid int he objective of Initial Swing?

A

Hip Flexion facilitates he objective of

1. Limb Advancement

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12
Q

During Mid-swing, what is the angle of the hip at the end of the phase?

A

10° of Flexion
to
20° of Flexion

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13
Q

How does the hip angle in Mid-swing help with the objectives of mid-swing?

A

Hip Flexion Facilitates the objective of

1. Continued Limb Advancement

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14
Q

What is the hip angle at the end of terminal Swing?

A

Maintains 20° of Flexion

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15
Q

What does the hip angle in terminal stance aid in the objectives tied to this phase?

A

Maintaining Hip Flexion during this phase facilitates the objective of

  1. Completing limb advancement
  2. Ensures normal Step/Stride Length
  3. Ensures Heel contact
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16
Q

What 2 factors ensure a normal step stride length in Gait?

A

Hip Extension during Terminal Stance

Hip Flexion Terminal Swing

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17
Q

During Initial contact, what is happening to the hip in the frontal plane?

A

Hip/Pelvis
-Neutral

Trunk
-Neutral

18
Q

During Loading Response/Mid Stance, what is happening to the hip in the frontal plane?

A

Hip/Pelvis
-Neutral to 3-5° of Adduction

Trunk
-Side Bending 3-5°

19
Q

During Terminal Stance, what is happening about the hip in the frontal plane?

A

Hip/Pelvis
-Neutral

Trunk
-Neutral

20
Q

What is the objective of frontal plane hip kinematics>

A

a relatively level pelvis assists in maintaining a weight bearing stability (hip Abductors)

21
Q

During loading response/Mid-stance, what is happening about the hip in Loading response?

A

Hip Internal Rotation

22
Q

During Mid-stance/Terminal Stance, what is happening about the hip in the transverse plane?

A

Hip External Rotation

23
Q

During Loading Response, what kind of moment is created about the hip?

A

Hip Flexion Moment

24
Q

What muscle are activated during Loading response about the hip?

A

Hip Flexion Moment Facilitates

Hip Extension (Isometric)

  • Gluteus Maximus
  • Hamstrings
  • Adductor Magnus
25
Q

What moment is created at the beginning of midstance?

A

A reducing Hip Flexion Moment

26
Q

What muscles are active during the early Midstance Hip Flexion Moment

A

Hip Flexor moment facilitates

Hip Extensors (Concentric)

  • Gluteus Maximus
  • Hamstrings
  • Adductor Magnus
27
Q

At the end of Midstance, what kind of moment is created at the hip?

A

No Moment

No Muscle activation

28
Q

During terminal stance, what kind of moment is created about the hip?

A

Hip Extension Moment

29
Q

In terminal stance, what muscles are activated due to the hip extension moment?

A

Hip Extension moment is resisted passively by

  • Anterior Hip Capsule
  • Tension of Anterior Structures

-No Hip flexors are active.

30
Q

What kind of moment is created in Pre-swing about the hip?

A

a Reducing Hip Extension Motion

31
Q

What muscles are active during Pre-swing about the hip?

A

Hip Extension moment…

Concentric Hip Flexors

  • Rectus Femoris
  • Adductor Longus
32
Q

What moment is created during initial swing about the hip?

A

Hip Extension Moment (Gravity Driven)

33
Q

What muscles are active about the hip during Initial swing?

A

Hip Extension moment driven by gravity creates…

Hip Flexor Moment (Concentric)

  • Psoas
  • Illiacus
34
Q

What moment is created during mid-swing about the hip?

A

Hip Extension Moment driven by gravity

35
Q

What muscles are active during mid-swing about the hip?

A

Hip Extension moment driven by gravity leads to…

Hip Flexors (concentric)

  • Psoas
  • Illiacus
36
Q

What moment is created at the hip during Terminal Swing?

A

Hip Extension moment driven by gravity

37
Q

What muscles are active during terminal swing about the hip

A

Hip extension moment driven by gravity leads to…

Hip Extensors

  • Gluteus Maximus (Isometric)
  • Gluteus Magnus (Isometric)
  • Hamstrings (Eccentric)
38
Q

During Loading-response to Terminal stance, what moment is created about the hip in the frontal plane?

A

Hip Adduction Moment

39
Q

During Loading Response to Terminal Stance, what muscles active?

A

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)

40
Q

From Loading Response to terminal stance, what moment is created about the hip in the transverse plane?

A

Hip Internal rotation moment

41
Q

What muscles are active to resist the hip internal rotation moment in the transverse plane about the hip?

A

Hip Internal rotation moment is resisted by

Hip External rotators

  • Gluteus Maximus
  • Piriformis
  • Deep Hip Rotators

(Eccentric Early Stance)
(Isometric/concentric Late Stance)

42
Q

What is the angle of the Hip at the end of initial contact?

A

20° of Flexion