Kines Hip Flashcards

1
Q

How much does the acetabulum face inferior in men vs women

A

There is a 22-42 range

Men: 38 degrees

Women: 35 degrees

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2
Q

What is another name for Right Pelvic External rotation

A

Left pelvic backwards rotation

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2
Q

What sections of the pelvis make up the posterior portion of the acetabellum

A

Ischium

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3
Q

How will a compensated retroversion present

A

External rotation of the LE

Toes are pointed out

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4
Q

Arthrokinematics of OCK IR

A

Anterior Roll Posterior Glide

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5
Q

Describe the structure of the proximal femur

A

It is more spherical than the acetabulum

Has a fovea capitis

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6
Q

What are the Transverse plane motions of the hip and the normal values

A

IR in extension (0-55) IR in Flexion (0-45) ER in extension (0-55) ER in Flexion (0-45)

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7
Q

Explain Right Pelvis Drop

A

Left leg is on ground as the axis of rotation

  • The right pevis will depress
  • Lumbar will bend to the right
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8
Q

Arthrokinematics of OCK Adduction

A

Inferior Roll Superior Glide

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8
Q

How will a tight iliopsoas present

A

Tight illiacus= anterior tilt of pelvis

Tight psoas major= Lumbar lordosis

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9
Q

What is retroversion

A

When the angle of “version” is less than 8-15 degrees or in a lateral torision

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10
Q

What are the medial rotators of the hip

A
  • There are no muscles with a primary function of IR
  • The TFL and glute medius (anterior fibers) may play the largest roles.
  • Glute minimus
  • Piriformis if the beyond 90 degrees of flexion
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11
Q

Explain the angle of inclination of the proxima femur and how it changes with age

A

Has a frontal plane inclination that gives the body its

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12
Q

What adductor will cross both the knee and the hip

A

The Gracillis

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13
Q

What are the primary muscles for lateral rotation of the hip

A
  1. Obturator internus
  2. Piriformis
  3. Obturator externus
  4. Quadratus femoris
  5. Sperior Gemellus
  6. Inferior gemellus
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15
Q

Explain Right hip Hiking

A

The Left leg with the femur in the acetabellum acts as the axis of rotation.

  • The right pelvis ill elevate
  • Lumbar will bend to the left
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15
Q

What will a greater angle of inclination result in on the lower extremity

A

Increased leg length

More of a valgus

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16
Q

What will limit the rotation of the hip while the hip is in 90 degrees of flexion

A

The posterior capsule

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18
Q

What are the sagittal plane motions and values for the hip

A

Flexion (0-120) Extension (0-20)

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19
Q

What will coxa valga result in for the lower extremity

A

Increased leg lenght

Increased pre-load to the abductors

Decreased moment arm of abductors

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19
Q

What are the secondary muslces used for ER of the hip

A

Glute medius (posterior fibers)

Superior gluteus maximus

20
Q

Explain the different actions of the Glute. Med.

A

All fibbers Abduct the hip

Anterior fibers flex and IR

Posterior fibers Extend and ER

22
Q

Which has a greater peak isometric torque on the hip the adductors or abductors

A

Adductors

23
Q

Why is there a lack of superior stability in the hip joint

A

The angle of inclination of the femur is greater than the acetabular angle of inclination. This exposes a portion of the femur head.

24
Q

Arthrokinematics of OCK ER

A

Posterior Roll Anterior Glide

26
Q

What are normal values for antiversion

A

8-15 degrees of torsion

26
Q

Explain the stability of the hip in the transverse plane

A

The acetabulum and the head of the femur are both facing anterior, which will expose the head of the femur anteriorly. Thus there is less stability anterior than there is posteriorly

27
Q

What is this an example of

A

Anterior Pelvic Tilt

28
Q

What is another name for left pelvic forward rotation

A

Right pelvic internal rotation

29
Q

What are the frontal plane motions of the hip and the normal values

A

Abduction (0-45) Addiction (0-30)

30
Q

How much doe the acetabellum face anteriorly in men vs women

A

Men 18.5 degrees

Women 21.5 degrees

32
Q

What sections of the pelvis make up the anterior portion of the acetabellum

A

The Illum and Pubis bones

32
Q

What is the characteristic of an uncompenstated retroversion, and what pathology is more likely to occur is this position

A

The head of the femur is exposed posteriorly

Posterior dislocation

34
Q

What are the 3 ways the acetabular will change with age

A
  1. Increased superior stability
  2. Increased central stability
  3. Reduced co-adaptation (matching up perfectly)
35
Q

Arthrokinematics of OCK Flexion

A

Spin

36
Q

What will a coxa varus result in the lower extremity

A

Shorter leg length

Impingment limiting ROM

Poor length tension relationship for abbductors

37
Q

What will happen to anteversion of the hip as we get older

A

It will begin to decrease

38
Q

How will one present while compensating for excessive anteversion

A

IR of lower extremity

Toes pointed in

39
Q

What is this an example of

A

Posterior Pelvic Tilt

40
Q

Why is the open pack position have the most congruency in the hip

A

The ligaments will “uncoil” with flexion, abduction, and external rotation

41
Q

Arthrokinematics of OCK Abduction

A

Superior Roll

Inferior Glide

42
Q

What is the position that has the most congruency in the hip

A

The open pack position

30-30-slight

Unlike other structures where the closed pack will have the most congruency

43
Q

Describe the orientation of the Acetabellum

A

Faces Lateraly and Anterior

*Antiversion

44
Q

Arthrokinematics of OCK Extension

A

Spin

45
Q

What is superincumbent weight

A
46
Q

How much superincumbent weight is placed on each femur in bilateral stance

A

1/2 of superincumbant weight

47
Q

How much abductor muscle force is required in the bilateral stance

A

Zero if there are no deformities/pathologies

48
Q

How much weight is on a leg in unilateral stance

A

Full superincumbent weight or 2/3 of total BW PLUS the weight of the unsupported leg

49
Q

How much is the adduction moment of the leg in unilateral stance

A

(Superincumbent weight + Weight of other leg)(Moment arm of Hat)/ The distance of the moment arm of abductors

50
Q

What would the adductor moment be, or the abduction force required for a 210 pound patient in unliateral stance

A

(140+30)x4

2

340#