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Extremity Muscle Testing > LE > Flashcards

LE Flashcards

1
Q

OIN peroneus longus

A

O: head and proximal 2/3 lateral fibula; lateral tibial condole and rib/fib capsule

I: medial aspect plantar surfaces 1st metatarsal and 1st cuneiform

N: superficial peroneal n.

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2
Q

Action peroneus longus

A

Plantar flexion at ankle

Eversion of foot

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3
Q

OIN peroneus brevis

A

O: distal and lateral 2/3 of fibula

I: base of 5th metatarsal

N: superficial peroneal n

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4
Q

Action peroneus brevis

A

Primarily eversion

Assists plantar flexion

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5
Q

OIN peroneus tertius

A

O: distal 1/3 anterior fibula and interosseous membrane

I: dorsal surface of the base or shaft of 5th metatarsal

N: deep peroneal n

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6
Q

Action peroneus tertius

A

Assist with dorsiflexion at the ankle and eversion of food

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7
Q

OIN tibialis anterior

A

O: Proximal anterolateral 2/3 tibia and adjacent interosseous membrane

I: 1st metatarsal base and medial first cuneiform

N: deep peroneal nerve

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8
Q

Action tibialis anterior

A

Dorsiflexes ankle

Inverts (supinates) foot

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9
Q

OIN extensor digitorum longus

A

O: lateral tibial condole, proximal 2/3 anteromedial fibula, adjacent interosseous membrane

I: medial and distal phalanges of toes 2-5

N: deep peroneal nerve

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10
Q

Action exterensor digitorum longus

A

O: lateral tibial condole, proximal 2/3 anteromedial fibular, interosseous membrane

I: middle and distal phalanges of toes 2-5

N: deep peroneal nerve

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11
Q

Action extensor digitorum longus

A

Extends joints of toes 2-5

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12
Q

OIN extensor hallucinate longus

A

O: middle anterior fibula and adjacent interosseous membrane

I: distal phalanx hallux

N: deep peroneal n

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13
Q

Action extensor hallucinate longus

A

Extends (dorsiflexes) big toe

*with extensor hallucis brevis)

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14
Q

OIN flexor digitorum longus

A

O: middle 1/3 posterior tibia

I: plantar base of distal phalanges of toes 2-5

N: tibial nerve

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15
Q

Action: flexor digitorum longus

A

Flexes toes 2-5

Assists plantar flexion

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16
Q

OIN flexor hallicus longus

A

O: distal 2/3 posterior fibula and interosseous membrane

I: plantar surface of distal phalanx of hallux

N: tibial nerve

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17
Q

Action flexor hallicus longus

A

Flexes hallux

18
Q

OIN tibialis posterior

A

O: posterior proximal lateral shaft of tibia, proximal medial shaft of fibula, interosseous membrane

I: plantar aspect of cuneiform and bases of metatarsals 2-5; navicular and 1st cuneiform and cuboid

N: tibial nerve

19
Q

Action tibialis posterior

A

Inversion

Plantar flexion

20
Q

OIN gastrocnemius

A

O: posterior aspect of femur

I: unites with soleus to form tendo-calcaneus to insert on tuberosity on the posterior aspect of calcaneus

N: tibial nerve

21
Q

Action gastrocnemius

A

Primary plantar flexors*
Flexes knee**

  • with soleus
  • *with hamstrings and popliteus
22
Q

OIN soleus

A

O: soleal line, posterior tibia, proximal posterior fibula

I: unites with gastroc to form Achilles’ tendon to insert on middle part of calcaneal tuberosity

N: tibial nerve

23
Q

Action soleus

A

Plantar flexion of the foot

24
Q

OIN popliteus

A

O: lateral femoral epicondyle

I: posterior aspect proximal tibia

N: tibial n

25
Q

Action popliteus

A

Internally rotates tibial in open kinetic chain

Externally rotates femur when tibia is fixed (closed kinetic chain)

26
Q

OIN semitendinosus

A

O: ischial tuberosity

I: proximal medial tibia and pes anserinus

N: tibial n

27
Q

Action semitendinosus

A

Primarily knee flexion
Internally rotates tibia
Assists hip extension and internal rotation

same as semimembranosus

28
Q

OIN semimembranosus

A

O: ischial tuberosity

I: posterior medial tibial condyle

N: tibial nerve

29
Q

Action semimembranosus

A

Primarily knee flexion
Internally rotates tibia
Assists hip extension and internal rotation

same as semitendinosus

30
Q

OIN biceps femoris

A

O: 2 heads
LONG O: ischial tuberosity
SHORT O: lateral linea aspera and lateral supracondylar line of posterior distal femur

I: superolateral aspect of fibular head

N: sciatic
LONG: tibial
SHORT: peroneal n

31
Q

Action biceps femoris

A

Knee flexion
When knee is flexed: externally rotates leg
LONG: extension and external rotation at hip

32
Q

OIN sartorius

A

O: ASIS

I: pes anserine - proximal medial tibia

N: femoral n

33
Q

Action sartorius

A

HIP: Flexes, ABDucts, laterally rotates

KNEE: flexes and medially rotates

34
Q

OIN rectus femoris

A

O: AIIS, brim of acetabulum

I: tibial tuberosity via infrapatellar tendon

N: femoral n

35
Q

Action rectus femoris

A

Extends knee

Flexes hip

36
Q

OIN vastus intermedius

A

O: anterolateral proximal 2/3 of femur

I: tibial tuberosity

N: femoral n

37
Q

Action vastus intermedius

A

Knee extension

38
Q

OIN vastus medialis

A

O: medial femur

I: tibial tuberosity

N: femoral nerve

39
Q

Action vastus medialis

A

Knee extension

40
Q

OIN vastus lateralis

A

O: posterior greater trochanter, lateral gluteal tuberosity, proximal 1/2 lateral lip of linea aspera

I: tibial tuberosity

N: femoral nerve

41
Q

Action vastus lateralis

A

Knee extension

Extremity Muscle Testing (2 decks)

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