MSK Muscles of LE (small book)

Question 1

Abductor digiti minimi

Actions, Nerve Supply, Spinal Segment

Answer 1

Toe abduction
Tibial (lateral plantar branch)
S2-S3

Question 2

Abductor hallucis

Actions, Nerve Supply, Spinal Segment

Answer 2

Toe abduction/toe flexion
Tibial (medial plantar branch)
S2-S3

Question 3

Adductor brevis

Actions, Nerve Supply, Spinal Segment

Answer 3

Hip flexion/adduction/IR
Obturator
L2-L3, L5/L2-L4

Question 4

Adductor longus

Actions, Nerve Supply, Spinal Segment

Answer 4

Hip flexion/add/IR
Obturator
L2-L4

Question 5

adductor magnus
(And ischiocondylar part)

Actions, Nerve Supply, Spinal Segment

Answer 5

Adduction/IR
Extension/adduction
Obturator/sciatic
L2-L4

Question 6

Biceps femoris

Actions, Nerve Supply, Spinal Segment

Answer 6

Hip extension/knee flexion/leg ER
Sciatic
L2-L4

Question 7

Dorsal interossei

Actions, Nerve Supply, Spinal Segment

Answer 7

Toe abduction/flexion
Tibial (lateral plantar branch)
L5, S1-S2

Question 8

Extensor digitorum brevis

Actions, Nerve Supply, Spinal Segment

Answer 8

Toe extension
Deep fibular
S2-S3

Question 9

Extensor digitorum longus

Actions, Nerve Supply, Spinal Segment

Answer 9

DF, eversion, toe extension
Deep fibular
S1-S2

Question 10

Extensor hallucis longus

Actions, Nerve Supply, Spinal Segment

Answer 10

DF, inversion, toe extension
Deep fibular
L5-S1

Question 11

Fibularis brevis

Actions, Nerve Supply, Spinal Segment

Answer 11

PF/eversion
Superficial fibular
L5, S1-S2

Question 12

Fibularis longus

Actions, Nerve Supply, Spinal Segment

Answer 12

PF/eversion
Superficial fibular
L5, S1-S2

Question 13

Fibularis Tetris

Actions, Nerve Supply, Spinal Segment

Answer 13

DF/eversion
Deep fibular
L5, S1

Question 14

Flexor digiti minimi brevis

Actions, Nerve Supply, Spinal Segment

Answer 14

Toe flexion
Tibial (medial plantar branch)
L5, S1

Question 15

Flexor digitorum brevis

Actions, Nerve Supply, Spinal Segment

Answer 15

toe flexion
Tibial (medial plantar branch)
S2-S3

Question 16

Flexor digitorum longus

Actions, Nerve Supply, Spinal Segment

Answer 16

PF, inversion, toe flexion
Tibial
S2-S3

Question 17

Flexor hallucis brevis

Actions, Nerve Supply, Spinal Segment

Answer 17

Toe flexion
Tibial (medial plantar branch)
S2-S3

Question 18

Flexor hallucis longus

Actions, Nerve Supply, Spinal Segment

Answer 18

PF, inversion, toe flexion
Tibial
S2-S3

Question 19

Gastrocnemius

Actions, Nerve Supply, Spinal Segment

Answer 19

PF, knee flexion
Tibial
S1, S2

Question 20

Gemellus inferior

Actions, Nerve Supply, Spinal Segment

Answer 20

Hip ER
Nerve to obturator internus
L5-S1

Question 21

Gemellus superior

Actions, Nerve Supply, Spinal Segment

Answer 21

Hip ER
Nerve to quadratus femoris
L5-S1

Question 22

Glute max

Actions, Nerve Supply, Spinal Segment

Answer 22

extension/abduction/ER
Inferior gluteal
L5, S1-S2

Question 23

Glute med

Actions, Nerve Supply, Spinal Segment

Answer 23

Abduction/IR
Superior gluteal
L5, S1

Question 24

Glute min

Actions, Nerve Supply, Spinal Segment

Answer 24

Abduction/IR
superior gluteal
L5-S1

Question 25

Gracilis Actions, Nerve Supply, Spinal Segment

Answer 25

Hip adduction/flexion/IR Obturator L2-L3

Question 26

Iliacus Actions, Nerve Supply, Spinal Segment

Answer 26

Hip flexion Femoral L2-L3

Question 27

Lumbricals Actions, Nerve Supply, Spinal Segment

Answer 27

MTP toe flexion/IP toe extension Tibial (1st medial plantar branch, 2-4 lateral plantar branch) S2-S3

Question 28

Obturator externus Actions, Nerve Supply, Spinal Segment

Answer 28

Hip ER Obturator L3-L4

Question 29

Obturator internus Actions, Nerve Supply, Spinal Segment

Answer 29

Hip ER N to obturator internus L5-S1

Question 30

Pectineus Actions, Nerve Supply, Spinal Segment

Answer 30

flexion/adduction/IR Femoral L2-L3

Question 31

Piriformis Actions, Nerve Supply, Spinal Segment

Answer 31

Hip ER Anterior rami of S1 and S2 L5, S1-S2

Question 32

Plantar interossei Actions, Nerve Supply, Spinal Segment

Answer 32

Toe adduction and flexion Tibial (lateral plantar branch) S2-S3

Question 33

Plantaris Actions, Nerve Supply, Spinal Segment

Answer 33

PF, knee flexion Tibial S1, S2

Question 34

Popliteus Actions, Nerve Supply, Spinal Segment

Answer 34

Knee flexion/unlocks knee joint Tibial L1-L3

Question 35

Quadratus femoris Actions, Nerve Supply, Spinal Segment

Answer 35

ER Nerve to quad fem L5, S1

Question 36

Rectus femoris Actions, Nerve Supply, Spinal Segment

Answer 36

Hip flexion/knee extension Femoral L2-L4

Question 37

Sartorius Actions, Nerve Supply, Spinal Segment

Answer 37

Flexion/abduction/ER Femoral L2-L3

Question 38

Semimembranosus Actions, Nerve Supply, Spinal Segment

Answer 38

Hip extension/leg flexion/IR Sciatic L5, S1-S2

Question 39

Semitendinosus Actions, Nerve Supply, Spinal Segment

Answer 39

Hip extension, knee flexion, IR Sciatic L5, S1-S2

Question 40

Soleus Actions, Nerve Supply, Spinal Segment

Answer 40

PF Tibial S1-S2

Question 41

TFL (3 positions) Actions, Nerve Supply, Spinal Segment

Answer 41

``` Abduction, IR In 0-30 knee flexion: knee extension In 45-145 knee flexion: knee flexion Superior gluteal L4-L5 ```

Question 42

Tibialis anterior Actions, Nerve Supply, Spinal Segment

Answer 42

DF/inversion Deep fibular L4-L5

Question 43

Tibialis posterior Actions, Nerve Supply, Spinal Segment

Answer 43

PF/inversion Tibial L4-L5

Question 44

Vastus intermedius Actions, Nerve Supply, Spinal Segment

Answer 44

Knee extension Femoral L2-L4

Question 45

Vastus lateralis Actions, Nerve Supply, Spinal Segment

Answer 45

Knee extension Femoral L2-L4

Question 46

Vastus medialis Actions, Nerve Supply, Spinal Segment

Answer 46

Knee extension Femoral L2-L4