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Movement Science 1 > Hip > Flashcards

Hip Flashcards

1
Q

Femur’s Angle of Inclination

A

~140-150 degrees in Kids
125 degrees in adults

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2
Q

Coxa Vara

A

Less than 125 degrees angle of inclination of femoral head towards acetabulum;
Patients have limited abduction range of motion

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3
Q

Coxa Valga

A

More than 125 degrees angle of inclination of femoral head towards acetabulum;
Patients stand more abducted

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4
Q

Pros & Cons of Coxa Vara

A

(~90 degrees)
Pro: increased moment arm for rotation at hip & improved joint stability
Con: Increased bending moment arm which increases shear force on femoral neck & has decreased functional length

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5
Q

Pros & Cons of Coxa Valga

A

Pros: decreased bending moment arm & decreased shear force & increased functional length of hip abd. muscles
Cons: Decreased moment arm & alignment favors joint dislocation

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6
Q

Femoral Torsion Angle

A

Normal Anteversion = 10-15 degrees
Excessive = >15 degrees
Retroversion = <15 degrees

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7
Q

Excessive Anteversion presents as ______ clinically.

A

Toe-in gait

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8
Q

Retroversion presents as ______ clinically.

A

Toe-out gait

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9
Q

Center-Edge Angle

A

~35 degrees of Acetabular Alignment with femoral head (how much it covers)

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10
Q

Acetabular Anteversion Angle

A

~20 degrees anterior

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11
Q

Iliofemoral Ligament limits:

A

Excessive extension and excessive external rotation
(Some people “stand on it”)

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12
Q

Pubofemoral Ligament limits:

A

Hip Abduction & Hip Extension

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13
Q

Ischiofemoral Ligament limits:

A

Hip Internal Rotation (esp. 10-20 degrees of abduction) and Hip Flexion

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14
Q

Ligaments of Hip in Close-packed position:

A

Full extension, with slight internal rotation & abduction is when ligaments are tightest

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15
Q

Ligaments of Hip in Open-packed position:

A

30 degrees flexion, 30 degrees abduction and slight internal rotation

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16
Q

Hip Open Chain

A

Femur on Pelvis

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17
Q

Hip Close Chain

A

Pelvis on Femur

18
Q

Osteokinematics: Hip Flexion

A

120 degrees w/ knee flexed
80 degrees w/ knee extended

19
Q

Why can you get greater hip flexion when knee is flexed?

A

Hamstrings are in shortened position allowing for additional lengthening

20
Q

Osteokinematics: Hip Extension

A

20 degrees
(Reduced w/ knee bent b/c of Rectus Femoris)

21
Q

Osteokinematics: Hip Abduction

A

40 degrees

22
Q

Osteokinematics: Hip Adduction

A

25 degrees

23
Q

Osteokinematics: Hip Internal Rotation

A

35 degrees

24
Q

Osteokinematics: Hip External Rotation

A

45 degrees

25
Q

Hip Flexion (open-chain) Roll&Slide

A

Anterior/Superior Roll
Posterior/Inferior Slide

26
Q

Hip Extension (Open-chain) Roll & Slide

A

Posterior/Superior Roll
Anterior/Inferior Slide

27
Q

Hip Abduction (Open-chain) Roll&Slides

A

Superior Roll
Inferior Slide

28
Q

Hip Adduction (Open-chain) Roll&Slide

A

Inferior Roll
Superior Slide

29
Q

Hip Internal Rotation (Open-chain)

A

Anterior Roll
Posterior Slide

30
Q

Hip External Rotation (Open-chain) Roll&Slide

A

Posterior Roll
Anterior Slide

31
Q

Hip Flexion (Closed-chain) Roll&Slide

A

Anterior/Superior Roll & Slide

32
Q

Hip Extension (Closed-chain) Roll&Slide

A

Posterior/Superior Roll & Slide

33
Q

Hip Abduction (Closed-chain) Roll&Slide

A

Superior Roll & Slide

34
Q

Hip Adduction (Closed-chain) Roll&Slide

A

Inferior Roll & Slide

35
Q

Hip Internal Rotation (Closed-chain) Roll&Slide

A

Anterior Roll & Slide

36
Q

Hip External Rotation (Closed-chain) Roll&Slide

A

Posterior Roll & Slide

37
Q

On which side of the body should you direct a patient to use a cane?

A

Opposite of the affected side.
-reduces amount of torque hip abductors have to create
-reduces HAF (hip abd force)
-reduces Hip JRF

38
Q

Which side of the body should you suggest a patient hold a bag if they present with Trendelenburg gait?

A

On the Ipsilateral side
-provides torque in same direction has hip abductors
-reduces HAF
-reduces Hip JRF

39
Q

Why to individuals with Trendelenburg sometimes have a trunk lean?

A

It helps reduce JRF

40
Q

Hip Arthroplasty precautions with posterior approach

A

No Flexion > 90 degrees
No ADD past neutral
No Internal Rotation

41
Q

Hip Arthroplasty precautions with anterior approach

A

No Extension
No ABD past neutral
No External Rotation

Movement Science 1 (8 decks)

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