Anterior/Medial Thigh + Femoral Triangle Flashcards Preview

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Flashcards in Anterior/Medial Thigh + Femoral Triangle Deck (45):
1

how many muscles are there in the anterior thigh?

8:
two make up iliopsoas
4 make up quadriceps femoris
plus sartorius + gracilis

2

which nerve innervates the anterior compartment?

femoral (L2-L4)

3

what is the general function of the anterior compartment?

extensors of knee

4

which 2 muscles make up iliopsoas?

iliacus and psoas major

5

what is the function of iliopsoas?

major hip flexor
also assists in lateral rotation

6

what are the attachments of the iliopsoas muscle?

psoas major comes from lumbar vertebrae, iliacus from the iliac fossa
both attach to lesser trochanter of femur

7

what is the innervation of iliopsoas?

psoas major = anterior rami of L1-L3
iliac = femoral nerve

8

name the muscles of quadriceps femoris

3 vastus muscles (medialis, intermedius + lateralis) and the rectus femoris

9

how does the quadriceps insert?

attaches to patella via quadriceps tendon, patella attaches to tibia by patellar tendon

10

what is the action of the vastus muscles?

extend knee

11

what is the innervation of quadriceps femoris?

anterior compartment, so femoral nerve

12

what are the attachments of rectus femoris?

ilium to patella by quadriceps tendon

13

which quadriceps muscle crosses both knee and hip joints?

rectus femoris

14

what is the action of rectus femoris?

flexes at knee, extends at hip

15

what are the attachments of the sartorius?

ASIS to superior medial surface of tibia

16

what is the action of sartorius?

at hip = flexor, abductor + lateral rotator
at knee = flexor
(sitting cross-legged on floor)

17

what is the action of pectineus?

adduction and flexion at hip

18

why can pectineus be considered either anterior or medial?

innervation of anterior (femoral)
action of medial (adduction and flexion at hip)

19

what are the attachments of pectineus?

pectineal line of pelvis to pectineal line on posterior femur

20

what is the general action of the medial thigh compartment?

hip adduction

21

which nerve innervates the medial thigh muscles?

obturator

22

how many muscles are there in the medial thigh?

5

23

name the 5 muscles in the medial thigh

adductor magnus, longus and brevis
obturator externus
gracilis

24

what roots does the obturator nerve arise from?

L2-L4

25

what are the attachments of each part of the adductor magnus?

adductor part: inferior rami of pubis + rami of ischium to linea aspera
hamstring part: ischial tuberosity to adductor tubercle of distal medial femur

26

what are the actions of each part of adductor magnus?

both adduct thigh
adductor part also flexes thigh
hamstring part also extends thigh

27

which nerves innervate each part of adductor magnus?

adductor part = obturator nerve
hamstring part = tibial nerve (L4-S3)

28

what border of the femoral triangle does the adductor longus make up?

medial

29

what are the attachments of adductor longus?

pubis - expands into fan shape - attaches broadly to linea aspera

30

what is the action of adductor longus?

adduction and medial rotation of thigh

31

what muscle lies between the anterior and posterior divisions of the obturator nerve?

adductor brevis

32

what are the attachments of adductor brevis?

body of pubis + inferior pubic rami to linea aspera (proximal to longus)

33

what is the action of adductor brevis?

adduction of thigh

34

what are the attachments of the obturator externus?

membrane of obturator foramen and associated bone to posterior aspect of greater trochanter

35

what is the action of obturator externus?

laterally rotates thigh

36

what are the attachments of the gracilis?

inferior rami + body of pubis to medial surface of tibia

37

what is the action of gracilis?

adduction of thigh at hip, flexion of leg at knee

38

which medial thigh muscle crosses hip and knee joints?

gracilis

39

what makes up the superior border of the femoral triangle?

inguinal ligament

40

which border of the femoral triangle does the inguinal ligament make up?

superior

41

what makes up the lateral border of the femoral triangle?

sartorius

42

to which border of the femoral triangle does sartorius contribute?

lateral

43

what makes up the medial border of the femoral triangle?

adductor longus

44

what border of the femoral triangle does the adductor longus make up?

medial

45

what are the contents of the femoral triangle?

(lateral to medial)
femoral nerve
femoral artery
fermoral vein
femoral canal (contains lymph vessels)
NAVEL