Thigh and knee musculature

Question 1

Iliopsoas innervation

Answer 1

Femoral nerve (L2-L4)

Question 2

Iliopsoas (psoas major and iliacus) prox and distal attachments

Answer 2

Prox:

Psoas major: L1-L5 vertebral bodies, trans processes, and discs

Iliacus: iliac fossa

Distal: lesser trochanter

Question 3

Psoas major and iliacus blood supply

Answer 3

PM: iliolumbar artery
Iliacus: medial circumflex femoral artery

Question 4

Actions of the iliopsoas

Answer 4

Open: hip flx/ER
Closed: flexion of trunk at hip

Question 5

Sartorius prox/distal attachments

Answer 5

Prox: Anterior superior iliac spine (ASIS)
Distal: pes anserine

Question 6

Sartorius innervation and blood supply

Answer 6

Femoral nerve (L2-L4)
Deep femoral artery

Question 7

Actions of sartorius

Answer 7

hip flx/ER/Abd
knee flx/IR

Question 8

Rectus femoris (long and short head) prox/distal attachemnts

Answer 8

Prox:

LH: Anterior Inferior Iliac Spine
SH: superior acetabular ridge

Distal:
Tibial tuberosity through the patella

Question 9

Innervation and blood supply of rectus femoris

Answer 9

Femoral nerve (L2-L4) and deep femoral artery

Question 10

Action of rectus femoris

Answer 10

Hip flx and knee ext

Question 11

Biceps femoris (LH and SH) prox/distal attachments

Answer 11

Prox:

LH: ischial tuberosity
SH: lateral lip if linea aspera

Distal: fibular head

Question 12

Biceps femoris innervation and blood supply

Answer 12

LH: Tibial nerve (S1-S3)
SH: Common fibular nerve (L5-S2)

Inferior gluteal artery and profunda femoris branches

Question 13

Prox/distal attachments for semitendinosus and semimembranosus

Answer 13

Prox: ischial tuberosity
Distal:
Semiten: pes anserine
Semimem: tibial plateau (posteromedial)

Question 14

Innervation and blood supply of semiten/membranosus

Answer 14

Tibial nerve (L5-S2) and the inferior gluteal artery/profunda femoris branches

Question 15

Actions of semitendinosus and semimembranosus

Answer 15

hip ext; knee flx/rotation