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Lower Extremity > LE Actions > Flashcards

LE Actions Flashcards

1
Q

Rectus Femoris

A

Extend knee

Assists iliopsoas to flex thigh

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2
Q

Vastus Medialis

A

Extend knee

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3
Q

Vastus Lateralis

A

Extend knee

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4
Q

Vastus Intermedius

A

Extend knee

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5
Q

Sartorius

A

Hip flexion, abduction, LR

Flex knee & assist knee in MR

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6
Q

Tensor of Fascia Lata

A

Hip abduction, MR, flexion

Assists with knee extension

Tenses fascia lata

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7
Q

Iliopsoas

A

Flexes hip

Assist in hip LR & abduction

With insertion fixed:
Bilaterally: flexes trunk on femurs, increases lumbar lordosis

Unilaterally: Assist in lateral flexion of trunk to same side

If trunk is stable, contributes to anterior shear of lumbar spine

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8
Q

Pectineus

A

Hip adduction and flexion

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9
Q

Adductor Longus

A

Hip adduction and flexion

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10
Q

Adductor Brevis

A

Hip adduction and flexion

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11
Q

Adductor Magnus

A

Hip adduction, flexion, extension

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12
Q

Gracilis

A

Adduct hip

Assists in knee MR and flexion

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13
Q

Obturator Externus

A

Hip LR

Assists hip adduction

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14
Q

Gluteus Maximus

A

Hip extension, LR

Lower fibers: assist in hip add

Upper fibers:
Assists in abduction

Stabilize knee in extension through ITB insertion

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15
Q

Gluteus Medius

A

Abduct hip

Anterior fibers: Hip MR and assist with hip flexion

Posterior fibers: Hip LR and assist with hip extension

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16
Q

Gluteus Minimus

A

Hip abduction, MR

Assists with hip flexion

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17
Q

Piriformis

A

Laterally rotate extended hip

Flex abducted hip

Assists hip extension

Stabilizes femoral head in acetabulum

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18
Q

Superior Gemelli

A

Laterally rotate extended hip

Abduct flexed hip

Stabilize femoral head in acetabulum

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19
Q

Inferior Gemelli

A

Laterally rotate extended hip

Abduct flexed hip

Stabilize femoral head in acetabulum

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20
Q

Obturator Internus

A

Laterally rotate extended hip

Abduct flexed hip

Stabilize femoral head in acetabulum

21
Q

Quadratus Femoris

A

Laterally rotate extended hip

Abduct flexed hip

Stabilize femoral head in acetabulum

22
Q

Biceps Femoris Long Head

A

Knee flexion, LR

Hip extension

Assists in hip LR

23
Q

Biceps Femoris Short Head

A

Knee Flexion and LR

24
Q

Semitendinosus

A

Knee flex and MR

Extend hip

Assists in hip MR

25
Q

Semimembranosus

A

Knee flex, MR

Extend hip

Assists in hip medial rotation

26
Q

Gastrocnemius

A

Medial Head
Talocrural plantar flexion

Assists in knee flexion

Subtalar joint inversion (supination)

Lateral Head

 Talocrural plantar flexion

 Assists in knee flexion
27
Q

Plantaris

A

Plantar flexion

Assists in knee flexion

28
Q

Soleus

A

Talocrural plantar flexion

Subtalar joint inversion (supination)

29
Q

Flexor Hallicus Longus

A

Great toe IP flexion

Assists in MP flexion

Plantar ankle flexion

Foot Inversion

30
Q

Flexor Digitorum Longus

A

Proximal and distal IP and MP Flexion of 2-5 digits

Assists in plantar flexion of ankle and inversion of foot

31
Q

Tibialis Posterior

A

Inversion

Assists in ankle plantar flexion

32
Q

Popliteus

A

NWB: MR of the tibia on the femur and knee flexion

WB: LR femur on tibia and knee flex

Helps reinforce posterior ligament of knee joint

33
Q

Extensor Hallucis Longus

A

Great toe IP and MTP extension

Assist in INV (foot)and DF (ankle)

34
Q

Extensor Digitorum Brevis

A

Extend of MTP of 1-4 digits

Assists in extension of IP joints 2-4

35
Q

Tibialis Anterior

A

Ankle dorsiflexion

Assists in Inversion

36
Q

Extensor Digitorum Longus

A

Extend MTP joints

Assists in extension of IP 2-5

DF and EV

37
Q

Fibularis (Peroneus) Tertius

A

Ankle DF

Foot Eversion

38
Q

Extensor Hallucis Brevis

A

Great toe MTP Extension

39
Q

Abductor Hallucis

A

Abduction of MTP of great toe

Assists in flexion

Assists in adduction of the forefoot

40
Q

Adductor Hallucis

A

Adduction

Assists in flexion of MTP of great toe

41
Q

Abductor Digiti Minimi

A

Flexes 5th toe

Assists with abduction

42
Q

Interossei

A

PLANTAR (3)
ADD 3-5th digits toward axial line through
the 2nd digit

Assists in MTP flexion

Assist in extension of IP 3-5th

DORSAL (4)
Abduct 2-4th digits from axial line through the 2nd digit

Assists in MTP flexion and extension of 2-4th IP

43
Q

Fibularis (Peroneus) Longus

A

Eversion

Assists in plantar flexion and depresses first metatarsal head

44
Q

Fibularis (Peroneus) Brevis

A

Eversion

Assists in plantar flexion

45
Q

Flexor Digiti Minimi Brevis

A

Flexion of fifth

46
Q

Flexor Digitorum Brevis

A

PIP Flexion

Assists in flexion of 2-5th MTP

47
Q

Quadratus Plantae

A

Modifies line of pull of the flexor digitorum longus tendons

Assists in flexion of 2-5th digits

48
Q

Lumbricals

A

MTP flexion

Assists in IP 2-5th extension

49
Q

Flexor Hallucis Brevis

A

Flexion of MTP of great toe

Lower Extremity (4 decks)

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