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MSA II > FEMUR & KNEE ~ MUSCLES > Flashcards

FEMUR & KNEE ~ MUSCLES Flashcards

1
Q

TENSOR FASCIA LATA (TFL)

A

O: anterior part of external lip of iliac crest, ASIS
I: into iliotibial tract of fascia lata
A: flex, medially rotate, ABD hip, tenses fascia lata, may assist in knee extension
N: superior gluteal nerve

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2
Q

SARTORIUS

A

O: ASIS, superior half of notch just distal to spine
I: Pes Anserine of tibia
A: flex, laterally rotate, ABD hip, flex & assist in medial rotation of knee joint
N: femoral nerve
*LONGEST muscle in body

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3
Q

RECTUS FEMORIS

A

O: straight head - AIIS
O: reflective head - groove above rim of acetabulum
I: proximal border of patella, through patellar ligament to tibial tuberosity
A: extend knee, flex hip
N: femoral nerve

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4
Q

VASTUS LATERALIS

A

O: intertrochanteric line, greater trochanter, gluteal tuberosity, proximal half of lateral lip of linea aspera
I: proximal border of patella, through patellar ligament to tibial tuberosity
A: knee extension
N: femoral nerve

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5
Q

VASTUS INTERMEDIUS

A

O: proximal 2/3 of body of femur, distal half of linea aspera
I: proximal border of patella, through patellar ligament to tibial tuberosity
A: knee extension
N: femoral nerve

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6
Q

VASTUS MEDIALIS

A

O: intertrochanteric line, medial lip of linea aspera, proximal part of medial supracondylar line
I: proximal border of patella, through patella ligament to tibial tuberosity
A: knee extension
N: femoral nerve

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7
Q

ARTICULARIS GENU

A

O: anterior surface of distal part of body of femur
I: proximal part of synovial membrane of knee joint
A: draws articular capsule proximally
N: femoral nerve

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8
Q

ADDUCTOR LONGUS

A

O: anterior surface of pubis at junction of crest & symphysis
I: middle 1/3 of medial lip of linea aspera
A: ADD & flex hip
N: obturator nerve

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9
Q

ADDUCTOR BREVIS

A

O: inferior ramus of pubis
I: distal 2/3 of pectineal line & proximal 1/2 of medial lip of linea aspera
A: ADD & flex hip
N: obturator

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10
Q

ADDUCTOR MAGNUS

A

O: inferior ramus of pubis, ramus of ischium (anterior fibers), ischial tuberosity (posterior fibers)
I: medial to gluteal tuberosity, middle of linea aspera, medial supracondylar line, adductor tubercle
A: anterior fibers - ADD & assist in flexion
A: posterior fibers - extension of hip
N: obturator & sciatic nerve

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11
Q

PECTINEUS

A

O: superior ramus of pubis, pectineal line of pubis
I: pectineal line of femur
A: ADD & flex hip
N: femoral & obturator nerve

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12
Q

GRACILIS

A

O: inferior 1/2 of pubic symphysis, medial margin of inferior ramus of pubic bone
I: Pes Anserine of tibia
A: ADD hip, flexion & medial rotation of knee
N: obturator nerve

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13
Q

BICEPS FEMORIS

A

O: long head - distal part of sacrotuberous ligament, ischial tuberosity
O: short head - lateral lip of linea aspera, proximal 2/3 of lateral supracondylar line
I: lateral side of head of fibula, lateral condyle of tibia
A: flex & laterally rotate knee joint - long head extends & assists in lateral rotation of hip
N: long head - sciatic nerve, tibial branch
N: short head - sciatic nerve, deep fibular (peroneal) branch

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14
Q

SEMIMEMBRANOSUS

A

O: ischial tuberosity
I: groove for semimembranosus
A: flex & medially rotates knee joint, extends & assist in medial rotation of hip
N: sciatic nerve, tibial branch

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15
Q

SEMITENDINOSUS

A

O: ischial tuberosity
I: Pes Anserine of tibia
A: flex & medially rotate knee joint, extends & assists in medial rotation of hip joint
N: sciatic nerve, tibial branch

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16
Q

TIBIALIS ANTERIOR

A

O: lateral condyle & proximal half of lateral surface of tibia, interosseous membrane
I: medial & plantar surface of medial cuneiform bone, base of first metatarsal
A: dorsiflexes ankle joint, assists in inversion of foot
N: deep peroneal (fibular) nerve

17
Q

EXTENSOR DIGITORUM LONGUS

A

O: lateral condyle of tibia, proximal 3/4 of anterior surface of body of fibula, proximal interosseous membrane
I: by 4 tendons into dorsal surface of 2-5 digits
A: extends MTP joints, assist in extending IP joints of 2-5 digits, assist in dorsiflexion of ankle joint & eversion of foot
N: peroneal (fibular) nerve

18
Q

EXTEBNSOR HALLUCIS LONGUS

A

O: middle two quarters of anterior surface of fibula
I: base of distal phalanx of great toe
A: extends MTP & IP joints of great toe, assists in inversion of foot & dorsiflexion of ankle
N: deep peroneal (fibular) nerve

19
Q

FIBULARIS (PERONEAL) TERTIUS

A

O: distal 1/3 of anterior surface of fibula, interosseous membrane
I: dorsal surface, base of 5th metatarsal
A: dorsiflex ankle joint, everts foot
N: deep peroneal (fibular) nerve

20
Q

FIBULARIS (PERONEUS) LONGUS

A

O: lateral condyle of tibia, head & proximal 2/3 of lateral surface of fibula
I: lateral side of base of first metatarsal & medial cuneiform bone
A: everts foot, assists in plantar flexion of ankle joint & depresses head of 1st metatarsal
N: superficial peroneal (fibular) nerve

21
Q

FIBULARIS (PERONEUS) BREVIS

A

O: distal 2/3 of lateral surface of fibula
I: tuberosity of base of 5th metatarsal bone, lateral side
A: everts foots & assist in plantar flexion of ankle
N: superficial peroneal (fibular) nerve

22
Q

GASTROCNEMIUS

A

O: medial head - proximal & posterior part of medial condyle, capsule of knee joint
O: lateral head - lateral condyle & posterior surface of femur, capsule of knee joint
I: middle part of posterior surface of calcaneus
A: plantar flexion of foot
N: tibial nerve

23
Q

SOLEUS

A

O: posterior surfaces of head of fibula & proximal 1/3 of its body, soleal line & middle 1/3 of medial border of tibia
I: with tendon of gastrocnemius, into posterior surface of calcaneus
A: plantar flex ankle joint, weak inversion of foot
N: tibial nerve

24
Q

PLANTARIS

A

O: distal part of lateral supracondylar line of femur
I: posterior calcaneus (via achilles tendon)
A: plantar flex ankle joint, assists with weak knee flexion
N: tibial nerve

25
Q

POPLITEUS

A

O: anterior part of groove on lateral condyle of femur
I: posterior surface of tibia on medial side
A: non-weight bearing (fixed origin): medially rotates tibia on femur & flexes knee joint
A: weight-bearing (fixed insertion): laterally rotates femur on tibia & flexes knee joint
N: tibial nerve

26
Q

TIBIALIS POSTERIOR

A

O: most of interosseous membrane, lateral portion of posterior surface of tibia, proximal 2/3 of medial aspect of fibula
I: ALL tarsal bones EXCEPT talus, & bases of 2-4 metatarsal bones
A: inverts foot & assists in plantar flexion of ankle joint
N: tibial nerve

27
Q

FLEXOR DIGITORUM LONGUS

A

O: middle 3/5 of posterior surface of body of tibia
I: bases of distal phalanges of 2-5 digits
A: flexes proximal & distal IP & MTP joints of 2-5 digits, assists in plantar flexion of ankle joint & inversion of foot
N: tibial nerve

28
Q

FLEXOR HALLUCIS LONGUS

A

O: posterior surface of distal 2/3 of fibula, interosseous membrane
I: base of distal phalanx of great toe, plantar surface
A: flexes IP joint of great toe, assist in flexion of MTP joints, plantar flexion of ankle joint & inversion of foot
N: tibial nerve

MSA II (15 decks)

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