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Clinical Anatomy > Hip Girdle Musculature/Abdomen > Flashcards

Hip Girdle Musculature/Abdomen Flashcards

1
Q

iliopsoas O/I, action, innervation (iliacus, psoas maj.)

A

Iliacus O: iliac fossa and iliac crest
Psoas maj. O: transverse processes, bodies, and discs of T12-L5

I: lesser trochanter of femur

Action: flex hip/trunk, abduct hip, some lateral flexion of trunk

Innervation: L2-L3

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2
Q

Psoas minor O/I, action, innervation

A

O: vertebral bodies T12-L1, disc T12
I: pecten pubis/pectineal line, iliopubic eminence

Action: flex trunk

Innervation: ventral ramus L1

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3
Q

Sartorious O/I, action, innervation

A

O: ASIS
I: Pes anserine

Action: flex hip, knee, external rot.hip, abduct hip

Innervation: femoral L2, 3

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4
Q

Rectus femoris O/I, action, innervation

A

O: AIIS
I: tibial tuberosity via patellar tendon

action: flex hip and extend knee

Innervation: femoral nerve L2-L4

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5
Q

Vastus lateralis, medialis, intermedius

A

Lateralis O: greater trochanter and lateral lip of linea aspera
Medialis O: greater trochanter and medial lip of linea aspera
Intermedialis O: anterior and lateral surface of femur
I: tibial tuberosity via patellar tendon

Action: extend knee

Innervation: Femoral nerve L2-4

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6
Q

Adductor brevis

A

O: inferior pubic ramus
I: upper 1/2 of linea aspera

Action: adduct hip, some hip flexion

Innervation: obturator nerve (L2-4)

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7
Q

adductor longus

A

O: anterior pubic ramus
I: middle of linea aspera

Action: adduct hip, flex hip

Innervation: obturator nerve (L2-4)

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8
Q

Adductor magnus

A

O: Ischial tuberosity, ischium, and pubic ramus
I: line from lesser trochanter to linea aspera, linea aspera, medial supracondylar line, adductor tubercle

Action: adduct hip, internally rotate hip, flex hip from extension, extend hip from flexion

Innervation: obturator and sciatic nerves (L2-L4)

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9
Q

Pectineus

A

O: superior pubic ramus
I: pectineal line (line from lesser trochanter to linea aspera)

Action: internally rotate, adduct, and flex hip

Innervation: obturator and femoral nerves (L2-3)

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10
Q

Gracilis

A

O: inferior pubic ramus
I: Pes anserine

Action: adduct and flex hip

Innervation: obturator nerve (L2-3)

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11
Q

Obturator externus

A

O: obturator foramen, external pubis and Ischium
I: trochanteric fossa of femur (btw. Greater and lesser)

Action: external rot hip, adduction from 90* of flexion

Innervation: obturator nerve (L3-4)

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12
Q

TFL

A

O: ASIS, iliac crest
I: IT band

Action: abduction, internal rotation, hip flexion and knee flexion

Innervation: superior gluteal nerve (L4-5)

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13
Q

Glute max

A

O: posterior gluteal line, posterior sacrum and coccyx, sacrotuberous ligament, aponeurosis of erector spinae
I: gluteal tuberosity, IT band

Action: extend, external rotation, and abduction of hip, posterior tilt of pelvis, stabilize knee

Innervation: inferior gluteal nerve (L5-S2)

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14
Q

Glute med

A

O: outer surface of ilium, anterior and posterior gluteal lines
I: greater trochanter

Action: internal rotate, abduct, and external rotate hip, lateral tilt of pelvis

Innervation: superior gluteal nerve (L5-S1)

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15
Q

Glute min

A

O: outer surface of ilium and btw anterior and inferior gluteal lines
I: greater trochanter

Action: internal rotation, abduction of hip

Innervation: superior gluteal nerve (L5-S1)

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16
Q

Piriformis

A

O: anterolateral sacrum, gluteal surface of ilium, capsule of sacroiliac joint
I: greater trochanter

Action: when hip extended, ext rotation of hip - when hip flexed, abduction

Innervation: ventral rami of L5-S2

17
Q

Gemellus superior

A

O: outer surface of Ischial spine
I: greater trochanter

action: external rotation, abduction when hip at 90*

Innervation: nerve to gemellus superior (L5-S1)

18
Q

Gemellus inferior

A

O: upper part of Ischial tuberosity
I: greater trochanter

Action: external rotation, abduction when hip at 90*

Innervation: nerve to gemellus inferior (L5-S1)

19
Q

Quad femoris

A

O: Ischial tuberosity
I: Quadrate tubercle of femur

Action: externally rotate hip

Innervation: nerve to quad fem (L5-S1)

20
Q

Obturator internus

A

O: obturator foramen
I: greater trochanter

Action: external rotation, abduction when hip at 90*

Innervation: nerve to obturator internus (L5-S1)

21
Q

Biceps femoris

A

Long O: Ischial tuberosity
Short O: linea aspera, lateral supracondylar line
I: head of fibula and lateral condyle of tibia

Action: extend hip, posterior posterior pelvic tilt, flex knee

Innervation: sciatic (L5-S2)

22
Q

Semimembranosis

A

O: ischial tuberosity
I: posterior medial condyle of tibia

Action: extend hip, posterior pelvic tilt, flex knee

Innervation: sciatic (L5-S2)

23
Q

Semitendinosis

A

O: Ischial tuberosity
I: pes anserine

Action: extend hip, post. Pelvic tilt, flex knee

innervation: sciatic (L5-S2)

24
Q

Iliopsoas clinical significance and relation to biomechanics of lumbar spine and hip

A

Increases lumbar compression and anterior shear (compresses nutrient supply, secondary lumbar extensor)

Pull countered by glute max and rectus abdominus

Push countered by erector spinae

Involved in janda lower cross syndrome

25
Q

Janda Lower Cross Syndrome (what’s lengthened & weak/ strong & tight?)

A

Lengthened & Weak abdominals and glute max

Tight & Strong hamstrings, iliopsoas, and erector spinae

26
Q

Glute Max - clinical significance and relation to biomechanics of lumbar spine and hip

A

Lumbosacral stability via thoracolumbar fascia

Frequently weak at end range/faulty movement pattern recruitment
- decreased glute max function associated with increased lumbar extensor function
- frequent movement pattern trumps muscle strengthening

Multiple issues at lumbar spine, hip, and knee associated with underperforming glute max

27
Q

Glute med - clinical significance and relation to biomechanics of lumbar spine and hip

A

Abduct and medically rotate thigh
- keeps pelvis level when ipsilateral limb is weight bearing
- advance opposite (unsupported) side during swing phase

Decreased glute med function paired with decreased glute max function

Excessive hip adduction/internal rotation is implicated in patellofemoral malalignment

28
Q

Patellofemoral pain paired with?

A

Decreased hip muscle strength

29
Q

Leg length discrepancy (foot, ankle, hip, knee, innominate long vs short leg)

A

Long
-foot: pronation
-ankle: dorsiflexion
-knee: flexion
-hip: flexion and internal rotation
-innominate: posterior rotation

Short
-foot: plantarflexion
-ankle: supination
-knee: extension
-hip: extension and external rotation
Innominate: anterior rotation

Clinical Anatomy (16 decks)

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