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MSK Practical 3 Flashcards

1
Q

Iliacus

A

O: iliac fossa
I: lesser trochanter
A: flexion and lateral rotation of thigh
N: L2 L3 femoral Nerve

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2
Q

Psoas major

A

O: ant. vert bodies and transverse processes of TV12-LV5
I: lesser trochanter
A: flex and lat. rot. thigh not bearing weight; flexes and side bends trunk while bearing weight
N: L1–L3 ventral rami lumbar nn.

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3
Q

Sartorius

A

O: ASIS
I: medial tibia just below condyle with gracilis and semitendinosus at pes anserinus
A: flexion of thigh and leg; lateral rotation of thigh, medial rotation of leg, abducts lower limb if knee is locked
N: femoral n.

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4
Q

Rectus Femoris

A

O: AIIS
I: superior part of patella to tibial tuberosity via patellar ligament
A: flexion of thigh; extension of leg
N: Femoral N

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5
Q

Vastus Lateralis

A

O: greater trochanter and lateral lip of linea aspera
I: lateral patella; tibial tuberosity via patellar ligament
A: leg extension
N: : femoral n.

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6
Q

Vastus Medialis

A

O: Intertrochanteric line and medial lip of linea aspera
I: medial patella; tibial tuberosity via patellar ligament
A: leg extension; maintains proper patellar tracking
N: femoral N

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7
Q

Vastus Intermedius

A

O: Anterior and lateral surface of most of femoral shaft
I: deep surface of tendon of rectus femoris and other vastus mm. via aponeurosis
A: leg extension
N: femoral n.

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8
Q

Articularis Genu

A

deep portion of vastus intermedius
O: antero-inferior surface of femur
I: superior portion of synovial membrane of knee joint and wall of suprapatellar bursa
A: pulls synovial membrane superiorly during leg extension to prevent entrapment between patella and femur
N: Femoral N

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9
Q

Pectineus

A

O: pectineal line of pubis
I:pectineal line of femur (posterior and inferior to lesser trochanter)
A: flexion and adduction of thigh, assists in medial rotation of thigh
N: femoral n. and or obturator n

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10
Q

Adductor longus

A

O: anterior body of pubis
I: medial lip of linea aspera (middle part)
A: flexion and adduction of thigh, assists in medial rotation of thigh
N: : anterior division of obturator n.

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11
Q

Adductor Brevis

A

O: inferior pubic ramus
I: medial lip of linea aspera (upper half)
A: flexion and adduction of thigh, assists in medial rotation of thigh
I: anterior division of obturator n.

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12
Q

Adductor MAgnus adductor head

A

O: Adductor head- ischiopubic ramus
I:Adductor head- gluteal tuberosity, linea aspera, medial supracondylar line
A: adducts thigh, flexes and assists in medial thigh rotation
N: posterior division of obturator n.

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13
Q

Adductor magnus hamstring head

A

O: ischial tuberosity
I: adductor tubercle of femur
A:adducts thigh, extends and assists in medial thigh rotation
N: tibial n.

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14
Q

Gracilis

A

O: inferior pubic ramus near symphysis
I: medial tibia just below condyle with sartorius and semitendinosus at pes anserinus
A: adducts thigh, flexes and medially rotates leg
N: anterior division of obturator n.

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15
Q

Obturator externus

A

O: anterior margins of obturator foramen and membrane
I: trochanteric fossa of femur
A: lateral rotation of thigh
N: posterior division of obturator n.

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16
Q

Femoral Triangle boundaries

A

Superior: inguinal ligament

Medial: lateral border of adductor longus

Lateral: medial border of sartorius

Roof: deep fascia (fascia lata)

Floor: pectineus and iliopsoas

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17
Q

Femoral triangle contents

A 
Femoral n.
Femoral a. and branches
Femoral v.
Lymphatics
 (NAVL)
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18
Q

Adductor canal contents

A

Femoral a., v., femoral n. to vastus medialis, saphenous n.

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19
Q

Gluteus Maximus

A

O: Ilium posterior to posterior gluteal line; dorsal surface of sacrum and coccyx; sacrotuberous ligament
I: gluteal tuberosity and iliotibial tract (ITT)
A: extends thigh, lateral rotation of thigh; acts with ITT to stabilize knee
N: inferior gluteal n.

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20
Q

Gluteus Medius

A

O: Ilium between posterior and anterior gluteal lines
I: greater trochanter
A: abduction of thigh; posterior fibers assist gluteus maximus in lateral thigh rotation; anterior fibers assist gluteus minimus in medial thigh rotation and leveling sacral base when contralateral limb is raised off of ground
N: Superior gluteal N

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21
Q

Gluteus Minimus

A

O: Ilium between anterior and inferior gluteal lines
I: anterior surface of greater trochanter
A: abduction and medial rotation of thigh; assists gluteus medius in leveling sacral base
N: superior gluteal n.

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22
Q

Tensor fascia latae

A

O: Anterolateral iliac crest near ASIS
I: lateral tibial condyle via iliotibial tract
A: abducts, flexes, and medially rotates thigh; maintains extended knee
N: superior gluteal n.

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23
Q

Piriformas

A

O: anterior surface of sacrum
I: greater trochanter
A: abduction and lateral rotation of thigh
N: nerve to piriformis

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24
Q

Gemellus Superior

A

O: ischial spine
I: merges with tendon of obturator internus
A: lateral thigh rotation
N: nerve to obturator internus

25
Obturator Internus
Origin: Internal surface of obturator membrane and margin of obturator foramen Insertion: greater trochanter Action: lateral rotation and abduction of thigh Innervation: nerve to obturator internus
26
Glemellus Inferior
Origin: ischial tuberosity near lesser sciatic notch Insertion: merges with tendon of obturator internus Action: lateral thigh rotation Innervation: nerve to quadratus femoris
27
Quadratus femoris
Origin: ischial tuberosity Insertion: quadrate tubercle on intertrochanteric crest of femur Action: lateral thigh rotation Innervation: nerve to quadratus femoris
28
Biceps Femoris long head
O: ischial tuberosity I: lateral condyle of tibia, head of fibula A: extend thigh, flex leg N: tibial N
29
Biceps Femoris short head
O: middle third lateral lip of linea aspera I: lateral condyle of tibia, head of fibula A: flex leg N: common fibular N
30
Semimembranosus
Origin: ischial tuberosity Insertion: posterior surface of medial condyle on tibia Action: extension of thigh and flexion of leg, medial rotation of leg Innervation: tibial n.
31
Semitendinosus
Origin: ischial tuberosity Insertion: medial anterior surface of tibia inferior to medial condyle Action: extension of thigh and flexion and medial rotation of leg when knee is flexed Innervation: tibial n.
32
Tibialis anterior
Origin: lateral condyle and superior half of lateral surface of tibia and interosseous membrane Insertion: medial and inferior surfaces of medial cuneiform and base of 1st metatarsal Action: dorsiflexion and inversion of foot Innervation: deep fibular n.
33
Extensor digitorum longus
Origin: anterior surface of fibula, lateral tibial condyle and interosseous membrane Insertion: middle and distal phalanges of lateral four digits Action: extend lateral four digits and dorsiflex foot Innervation: deep fibular n.
34
Fibularis Tertius
Origin: inferior third of anterior surface of fibula and interosseous membrane Insertion: base of 5th metatarsal Action: dorsiflex foot, aid in eversion of foot Innervation: deep fibular n.
35
Extensor Hallucis longus
Origin: middle part of anterior surface of fibula and interosseous membrane Insertion: base of distal phalanx of hallux Action: dorsiflex foot, extend hallux Innervation: deep fibular n.
36
Extensor Digitorum Brevis
Origin: dorsal surface of calcaneus Insertion: base of proximal phalanx of hallux, bases of middle and distal phalanx digits 2-4 by lateral sides of extensor digitorum longus tendons Action: extends digits 1-4 Innervation: deep fibular n.
37
Fibularis longus
Origin: head and supero-lateral 2/3rds of lateral surface of fibula Insertion: base of 1st metatarsal and medial cuneiform Action: eversion and plantar flexion of foot Innervation: superficial fibular n.
38
Fibularis Brevis
Origin: distal lateral fibula Insertion: lateral base of 5th metatarsal Action: eversion and plantar flexion of foot Innervation: superficial fibular n.
39
Gastrocnemius
Origin: lateral and medial aspects of lateral/medial condyles of femur Insertion: calcaneus with soleus and plantaris mm. Action: plantar flex foot, flex leg Innervation: tibial n.
40
Soleus
Origin: posterior surface of head and proximal shaft of fibula, soleal line on upper tibia Insertion: calcaneus with gastrocnemius and plantaris mm. Action: plantar flexion of foot Innervation: tibial n.
41
Plantaris
Origin: Posterior surface of lateral condyle of femur Insertion: calcaneus with gastrocnemius and soleus Action: aids gastrocnemius to plantar flex foot Innervation: tibial n.
42
Popliteus
Origin: lateral surface of lateral femoral condyle Insertion: proximal tibia superior to soleal line Action: flex and medially rotate leg, when foot is fixed it laterally rotates femur to unlock knee Innervation: tibial n.
43
Flexor hallucis Longus
Origin: distal 2/3 of posterior surface of fibula and interosseous membrane Insertion: base of distal phalanx of hallux Action: flexes hallux, plantar flexes foot Innervation: tibial n.
44
Flexor Digitorum Longus
Origin: Posterior surface of middle of tibia Insertion: base of distal phalanx of digits 2-5 Action: flexes digits 2-5, plantar flexion of foot Innervation: tibial n.
45
Tibialis Posterior
Origin: posterior surface of upper tibia and fibula, interosseous membrane Insertion: bases of metatarsals 2-4, navicular, all cuneiforms and sustentaculum tali Action: inversion and plantar flexion of foot Innervation: tibial n.
46
Tibialis Anterior
Origin: lateral condyle and superior half of lateral surface of tibia and interosseous membrane Insertion: medial and inferior surfaces of medial cuneiform and base of 1st metatarsal Action: dorsiflexion and inversion of foot Innervation: deep fibular n.
47
Extensor digitorum longus
Origin: anterior surface of fibula, lateral tibial condyle and interosseous membrane Insertion: middle and distal phalanges of lateral four digits Action: extend lateral four digits and dorsiflex foot Innervation: deep fibular n.
48
fibularis tertius
Origin: inferior third of anterior surface of fibula and interosseous membrane Insertion: base of 5th metatarsal Action: dorsiflex foot, aid in eversion of foot Innervation: deep fibular n.
49
extensor hallucis longus
Origin: middle part of anterior surface of fibula and interosseous membrane Insertion: base of distal phalanx of hallux Action: dorsiflex foot, extend hallux Innervation: deep fibular n.
50
extensor digitorum brevis
Origin: dorsal surface of calcaneus Insertion: base of proximal phalanx of hallux, bases of middle and distal phalanx digits 2-4 by lateral sides of extensor digitorum longus tendons Action: extends digits 1-4 Innervation: deep fibular n.
51
fibularis longus
Origin: head and supero-lateral 2/3rds of lateral surface of fibula Insertion: base of 1st metatarsal and medial cuneiform Action: eversion and plantar flexion of foot Innervation: superficial fibular n.
52
fibularis brevis
Origin: distal lateral fibula Insertion: lateral base of 5th metatarsal Action: eversion and plantar flexion of foot Innervation: superficial fibular n.
53
gastrocnemius
Origin: lateral and medial aspects of lateral/medial condyles of femur Insertion: calcaneus with soleus and plantaris mm. Action: plantar flex foot, flex leg Innervation: tibial n.
54
soleus
Origin: posterior surface of head and proximal shaft of fibula, soleal line on upper tibia Insertion: calcaneus with gastrocnemius and plantaris mm. Action: plantar flexion of foot Innervation: tibial n.
55
plantaris
Origin: Posterior surface of lateral condyle of femur Insertion: calcaneus with gastrocnemius and soleus Action: aids gastrocnemius to plantar flex foot Innervation: tibial n.
56
popliteus
Origin: lateral surface of lateral femoral condyle Insertion: proximal tibia superior to soleal line Action: flex and medially rotate leg, when foot is fixed it laterally rotates femur to unlock knee Innervation: tibial n.
57
flexor hallucis longus
Origin: distal 2/3 of posterior surface of fibula and interosseous membrane Insertion: base of distal phalanx of hallux Action: flexes hallux, plantar flexes foot Innervation: tibial n.
58
flexor digitorum longus
Origin: Posterior surface of middle of tibia Insertion: base of distal phalanx of digits 2-5 Action: flexes digits 2-5, plantar flexion of foot Innervation: tibial n.
59
tibialis posterior
Origin: posterior surface of upper tibia and fibula, interosseous membrane Insertion: bases of metatarsals 2-4, navicular, all cuneiforms and sustentaculum tali Action: inversion and plantar flexion of foot Innervation: tibial n.

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