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MSK > LL Muscles > Flashcards

LL Muscles Flashcards

1
Q

Adductor brevis

A

O: inferior ramus of pubis
I: linea aspera and pectineal line
INN: obturator nerve (L2-4)
A: hip adduction, flexion (anat position), extension (90° hip fx)

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2
Q

Adductor longus

A

O: pubis
I: linea aspera
INN: obturator nerve (L2-4)
A: hip adduction, flexion (anat position), extension (90° hip fx)

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3
Q

Adductor magnus

A

O: ischiopubic ramus and ischial tuberosity
I: linea aspera, medial supracondylar ridge adductor tubercle
INN: obturator nerve (L2-4)
A: hip adduction and extension

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4
Q

Biceps femoris - long head

A

O: ischial tuberosity
I: head of fibula
INN: tibial nerve (L4-S1)
A: hip extension, knee flexion, tibial lateral rotation (in knee fx)

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5
Q

Biceps femoris - short head

A

O: linea aspera
I: head of fibula
INN: common fibula nerve (L5-S1)
A: knee flexion, tibial lateral rotation (in knee fx)

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6
Q

Extensor digitorum longus

A

O: lateral condyle of tibia, anterior fibula
I: distal phalanges 2-5
INN: deep fibular nerve (L4-S1)
A: toe 2-5 extension, dorsiflexion

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7
Q

Extensor hallucis longus

A

O: anterior fibula
I: distal phalanx 1
INN: deep fibular nerve (L4-S1)
A: toe 1 extension, dorsiflexion

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8
Q

Fibularis brevis

A

O: midlateral fibula
I: base of MT5
INN: superficial fibular nerve (L5-S2)
A: eversion, weak plantarflexion

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9
Q

Fibularis longus

A

O: head and proximal fibula, lateral condyle of tibia
I: base of MT 1 and medial cuneiform
INN: superficial fibular nerve (L5-S2)
A: eversion, weak plantarflexion

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10
Q

Fibularis tertius

A

O: anterior distal fibula
I: base of MT 5
INN: deep fibular nerve (L5-S1)
A: dorsiflexion, weak eversion

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11
Q

Flexor digitorum longus

A

O: posteromedial tibia
I: distal phalanges 2-5
INN: tibial nerve (L5-S1)
A: plantarflexion, MP+PIP+DIP 2-5 flexion

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12
Q

Flexor hallucis longus

A

O: posterior inferior fibula
I: distal phalanx 1
INN: tibial nerve (L5-S1)
A: plantarflexion, MP+IP 1 flexion

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13
Q

Gastrocnemius

A

O: lateral and medial condyles of femur
I: calcaneus
INN: tibial nerve (L4-S1)
A: knee flexion, plantarflexion

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14
Q

Gluteus maximus

A

O: iliac crest, sacrum and coccyx
I: iliotibial band, linea aspera and gluteal tuberosity
INN: inferior gluteal nerve (L5-S2)
A: hip extension, abduction (upper segments). adduction (lower segments)

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15
Q

Gluteus medius

A

O: iliac crest, lateral surface bw pos and ant gluteal lines
I: greater trochanter
INN: superior gluteal nerve (L4-S1)
A: hip abduction and internal rotation (all in hip fx, anterior portion in hip ex)

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16
Q

Gluteus minimus

A

O: lateral ilium bw inf and ant gluteal lines
I: greater trochanter
INN: superior gluteal nerve (L4-S1)
A: hip abduction and internal rotation (all in hip fx, anterior portion in hip ex)

17
Q

Gracilis

A

O: inferior ramus and body of pubis
I: upper medial tibia
INN: obturator nerve (L2-4)
A: hip adduction and flexion, knee flexion, tibial medial rotation (in knee fx)

18
Q

Iliacus

A

O: iliac fossa
I: lesser trochanter and anterior capsule of hip
INN: femoral nerve (L2-3)
A: hip flexion, external rotation

19
Q

Inferior gemellus

A

O: ischial tuberosity
I: greater trochanter
INN: nerve to quadratus femoris (L5-S1)
A: hip external rotation

20
Q

Obturator externus

A

O: obturator foramen
I: trochanteric fossa
INN: obturator nerve (L3-4)
A: hip external rotation

21
Q

Obturator internus

A

O: obturator foramen
I: greater trochanter
INN: nerve to obturator internus (L5-S2)
A: hip external rotation

22
Q

Pectineus

A

O: superior ramus of pubis
I: pectineal line
INN: femoral or obturator nerves
A: hip adduction and flexion

23
Q

Piriformis

A

O: anterolateral sacrum (greater sciatic foramen)
I: greater trochanter
INN: L5-S2 ventral rami
A: hip external rotation (hip ex), internal rotation (hip fx)

24
Q

Plantaris

A

O: lateral supracondylar ridge of femur
I: posterior calcaneus
INN: tibial nerve (L4-S1)
A: weak knee flexion, weak plantarflexion

25
Q

Popliteus

A

O: lateral condyle of femur
I: posterior proximal tibia
INN: tibial nerve (L4-5)
A: knee flexion, tibial medial rotation

26
Q

Psoas major

A

O: T12-L5 transverse processes and bodies
I: lesser trochanter
INN: branches of lumbar plexus (L1-3)
A: hip flexion, external rotation

27
Q

Quadratus femoris

A

O: ischial tuberosity
I: intertrochanteric crest
INN: nerve to quadratus femoris (L4-S1)
A: hip external rotation

28
Q

Rectus femoris

A

O: AIIS
I: tibial tuberosity
INN: femoral nerve (L2-4)
A: hip flexion, knee extension

29
Q

Sartorius

A

O: ASIS
I: tibial tuberosity
INN: femoral nerve (L2-4)
A: hip flexion, abduction and external rotation, knee flexion, tibial medial rotation (in knee fx)

30
Q

Semimembranosus

A

O: ischial tuberosity
I: medial condyle of tibia
INN: tibial nerve (L4-S1)
A: hip extension, knee flexion, tibial medial rotation (in knee fx)

31
Q

Semitendinosus

A

O: ischial tuberosity
I: proximal medial tibia
INN: tibial nerve (L4-S1)
A: hip extension, knee flexion, tibial medial rotation (in knee fx)

32
Q

Soleus

A

O: head and proximal fibula, medial border of tibia
I: calcaneus
INN: tibial nerve (L4-S1)
A: plantarflexion

33
Q

Superior gemellus

A

O: ischial spine and tuberosity
I: obturator internus tendon
INN: nerve to obturator internus (L5-S1)
A: hip external rotation

34
Q

Tensor fasciae latae

A

O: iliac crest and ASIS
I: iliotibial band
INN: superior gluteal nerve (L4-S1)
A: hip abduction and internal rotation

35
Q

Tibialis anterior

A

O: lateral condyle and proximal tibia
I: MT 1 and medial cuneiform
INN: deep fibular nerve (L4-S1)
A: dorsiflexion, inversion

36
Q

Tibialis posterior

A

O: fibula, tibia
I: MT 2-4, navicular, cuboid, all cuneiforms
INN: tibial nerve (L5-S1)
A: plantarflexion, inversion

37
Q

Vastus intermedius

A

O: anterolateral femur
I: quadriceps tendon
INN: femoral nerve (L2-4)
A: knee extension

38
Q

Vastus lateralis

A

O: greater trochanter and linea aspera
I: quadriceps tendon
INN: femoral nerve (L2-4)
A: knee extension

39
Q

Vastus medialis

A

O: intertrochanteric line and linea aspera
I: quadriceps tendon
INN: femoral nerve (L2-4)
A: knee extension

MSK (11 decks)

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