Anterior Femoral Muscles

Question 1

Iliopsoas segmental innervation

Answer 1

L1-4

Question 2

iliopsoas is a combination of what two muscles:

Answer 2

iliacus

psoas major

Question 3

iliacus attachments

Answer 3

from iliac fossa, iliac crest, sacral ala & sacroiliac ligaments to lesser trochanter of femur

Question 4

iliacus actions

Answer 4

flexes and stabilizes the hip joint

Question 5

iliacus innervation

Answer 5

femoral nerve (L2-4)

Question 6

psoas major attachments

Answer 6

from anterior transverse processes, vertebral bodies & discs (T12-L5) to the lesser trochanter of femur

Question 7

psoas major actions

Answer 7

flexes and stabilizes hip joint

Question 8

psoas major innervation

Answer 8

ventral rami L1-4 (lumbar plexus)

Question 9

rectus femoris attachments

Answer 9

from anterior inferior iliac spine and groove superior to the acetabulum to the base of the patella

Question 10

rectus femoris actions

Answer 10

flexes hip, extends knee

Question 11

rectus femoris innervation

Answer 11

femoral nerve (L2-4)

Question 12

sartorius attachments

Answer 12

from anterior superior iliac spine to the medial aspect of the proximal tibia

Question 13

sartorius actions

Answer 13

flexes, abducts & laterally rotates hip, and flexes & assists medial rotation of the knee

Question 14

sartorius innervation:

Answer 14

femoral nerve (L2-3)

Question 15

TFL attachments

Answer 15

from anterior superior iliac spine & external lip iliac crest to iliotibial tract

Question 16

TFL actions

Answer 16

abducts, flexes & medially rotates hip, and assists in maintaining knee
extension

Question 17

TFL innervation:

Answer 17

superior gluteal nerve (L4-5 -S1)

Question 18

vastus intermedius attachments

Answer 18

from the anterior aspect of the proximal 2/3rds of the femoral shaft to the lateral border of the patella

Question 19

vastus intermedius actions

Answer 19

extends knee

** does not cross hip joint

Question 20

vastus intermedius innervation

Answer 20

femoral nerve (L2-4)

Question 21

vastus lateralis attachments

Answer 21

from the intertrochanteric line, greater trochanter, gluteal tuberosity & linea aspera to the base & lateral border of the patella

Question 22

vastus lateralis actions

Answer 22

extends knee

Question 23

vastus lateralis innervation:

Answer 23

femoral nerve (L2-4)

Question 24

vastus medialis attachments

Answer 24

• from the intertrochanteric line, spiral line, linea aspera & medial supracondylar line to the base & medial border of the patella

Question 25

vastus medialis actions

Answer 25

extends knee

Question 26

vastus medialis innervation

Answer 26

femoral nerve (L2-4)