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03 - Kinesiology > 03-09: The Pelvic Girdle > Flashcards

03-09: The Pelvic Girdle Flashcards

1
Q

Joints of the pelvis (3)

A

Sacroiliac Joint, Pubic Symphysis, Lumbrosacral Joint

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2
Q

Pelvic Motions (4)

A

Anterior Tilt, Posterior Tilt, Lateral Tilt, Rotation

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3
Q

Anterior Tilt (re: Lordosis)

A

Increased Lordosis, lumbar back-bending

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4
Q

Anterior Tilt (re: ASIS-PSIS, Pelvis Positioning)

A
  • Pelvis moves anteriorly
  • ASIS inferior, PSIS superior
  • “Donald Duck”
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5
Q

Anterior Tilt (re: Deficiencies, Dysfunctions)

A
  • Weakened abs (lengthened), restricted ES (shortened)

- May lead to stenosis of lateral foramen, which may impinge nerves

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6
Q

Posterior Tilt (re: Lordosis)

A

Decreased Lordosis, lumbar goes into flexion (forward bend, flat back)

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7
Q

Posterior Tilt (re: ASIS-PSIS, Pelvis Positioning)

A
  • Pelvis moves posteriorly
  • ASIS superior, PSIS inferior
  • “PInk Panther”
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8
Q

Posterior Tilt (re: Deficiencies, Dysfunctions)

A
  • Weakened ES (lengthened), restricted abs (shortened)
  • History of disk herniation
  • FHP
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9
Q

ASIS-PSIS positioning (degrees)

A
  • ASIS should sit inferiorly to PSIS by 8-10˚
  • Greater than 10˚ = anterior tilt
  • Less than 8˚ = posterior tilt
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10
Q

Anterior/Posterior Tilt - Planes of motion

A
  • Motion occurs at lumbarsacral joint (L5-S1)

- Sagittal plane about a frontal axis

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11
Q

Lateral Tilt - Definition

A
  • Ability of pelvis to drop down or elevate on one side
  • Lateral Tilt = Drop down
  • Hip Hike = Rise
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12
Q

Lateral Tilt - Osteokinematic Motion

A
  • ABD on one side, ADD on the other side
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13
Q

Lateral Tilt - Planes of Motion

A
  • Side to Side

- Frontal plane about sagittal axis

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14
Q

Pelvic Rotation - Description

A
  • Pelvis moves as a whole

- Only occurs with single leg standing

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15
Q

Pelvic Rotation - Planes of motion

A
  • Motion occurs at iliofemoral joint

- Tranverse plane about a vertical axis

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16
Q

Iliorotation - Planes of motion

A
  • Motion occurs at pubic symphysis, SI joint
  • Unilateral
  • Sagittal plane about a frontal axis
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17
Q

Anterior iliorotation (re: ASIS-PSIS)

A

ASIS inferior, PSIS superior

18
Q

Posterior iliorotation (re: ASIS-PSIS)

A

ASIS superior, PSIS inferior

19
Q

Anterior Rotation during gait

A

Internal rotation at hip joint

20
Q

Posterior rotation during gait

A

External rotation at hip joint

21
Q

Sacrotuberous and sacrospinous ligaments

A

Prevents rotation

- Limits excessive posterior rotation

22
Q

Interosseous Membranes (Anterior/Posterior SI)

A
  • Prevents flaring
  • Anterior SI prevents ASIS outflare
  • Posterior SI prevents ASIS inflare
23
Q

Iliolumbar Ligaments

A
  • Anterior ilial rotation = pulls L4

- Posterior ilial rotation = pulls L5

24
Q

Pelvic joint locks up…(results)

A

…other movable areas move more to compensate

25
Q

Male vs. Female = Males are…

A
  • Sturdier
  • Pubic symphysis is taller
  • Ischial tuberosities less far apart
  • Iliac wings less flared
26
Q

Male vs. Female (Sacral surface, stability)

A
  • Females = S1-S2
  • Males = S1-S3
  • Greater surface area = more stability
27
Q

Sacrum (Joint Types)

A
  • Sacrum lined with Hyaline cartilage (synovial)
  • Ilium lined with Fibrocartilage (Amphiarthrodial)
  • Sacrum also lined with ligaments (synarthrodial)
  • Cornerstone of pelvic girdle = wider anterior and narrow posterior
28
Q

Transverse Axis Movement

A
  • Really movement of sacrum around frontal axis

- Refers to flexion/extension motion of sacrum

29
Q

Nutation of sacrum

A
  • Resting position is 30˚
  • Sacrum nods forward (flex)
  • Anterior and inferior
  • Back moves into increased lordosis (extension)
30
Q

Counter nutation of sacrum

A
  • Sacrum nods backward (extension)
  • Posterior and Superior
  • Back moves into decreased lordosis (flexion)
31
Q

Nutation-Counter nutation relationship

A

Inverse relationship between spine and pelvis

32
Q

Muscles that move the pelvis

A
  • Erector Spinae = Anterior Tilters
  • Abdominals = Posterior Tilters
  • QL/Obliques = HIp Hikers/Lateral Tilters
  • Multifidi = Nutators
  • Piriformis = Counter Nutators
33
Q

Piriformis

A

O: Anterior aspect of sacrum at S1-S2
I: Superior aspect of the greater trochanter
A: Lateral rotation, UL = contralateral rotator of sacrum, BL = counter nutation of sacrum
N: Nerve to the piriformis

***Beyond 90˚, piriformis becomes internal rotator (see piriformis stretch)

34
Q

Multifidi (re: sacrum and nutation)

A
  • Forms into one big muscle chunk at L3; anchors to posterior proximal aspect of sacrum
  • Becomes sacral nutator when multifidi contracts bilaterally (pulls sacrum anteriorly)
35
Q

Sciatic Nerve

A
  • Emerges directly under piriformis and above superior gemellus
  • Impingement = sciatica
  • If SN comes through piriformis = piriformis syndrome
36
Q

Ilial Movements

A
  • Primary: Anterior/Posterior Rotation
  • Accessory: Superior/Inferior (upslip/downslip); ER/IR (inflare/outflare)
  • Displacement will be greater anteriorly than posteriorly
37
Q

Evaluation of SI Joint (Test for Position)

A
  • Iliac Crest Height
  • Trochanter Height
  • ASIS/PSIS positions
  • Gluteal mass
  • Pelvic inclination (Normal is 8-10˚)
  • Pubic position
38
Q

Evaluation of SI Joint (Test for Mobility)

A
  • Forward Bend Test

- Gillet’s Test

39
Q

Forward Bend Test

A

Side that moves first and most is dysfunctional

40
Q

GIllet’s Test

A

Dysfunctional PSIS will rise, not drop down

03 - Kinesiology (18 decks)

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