Lower Limb 1

Question 1

What are the landmarks of the pelvic girdle?

Answer 1

iliac crest and fossa, sacrum, acetabulum
ilium, pubis, ischium
ASIS/AIIS/PSIS
inguinal ligament, ischial tuberosity, obturator foramen

Question 2

What are the landmarks of femur?

Answer 2

greater and lesser trochanter
intertrochanteric line (ant) and crest (post)
gluteal tuberosity
linea aspera

Question 3

What are the compartments of the thigh?

Answer 3

Anterior = hip flexors, knee extensors
Medial = adductors
Posterior = hip extensors, knee flexors

Question 4

What are the muscles of the anterior thigh?

Answer 4

iliopsoas
sartorius
rectus femoris
vastus lateralis
vastus intermedialis
vastus medialis

Question 5

What is the origin, insertion, action, innervation of the iliopsoas?

Answer 5

O: L1-L5, T12, iliac fossa
I: lesser trochanter
A: flexion thigh
IN: femoral nerve

Question 6

What is the origin, insertion, action, innervation of the sartorius?

Answer 6

O: ASIS
I: (winds) to medial tibia
A: flex, abduct, lateral rotate thigh & flex knee
IN: femoral nerve

Question 7

What is the origin, insertion, action, innervation of the rectus femoris?

Answer 7

O: AIIS
I: patella and tibial tuberosity
A: flexion hip, extend knee
IN: femoral nerve

Question 8

What is the origin, insertion, action, innervation of the vastus medialis?

Answer 8

O: inter-trochanteric line
I: patella and tibial tuberosity
A: extend knee
IN: femoral nerve

Question 9

What is the origin, insertion, action, innervation of the vastus lateralis?

Answer 9

O: greater trochanter
I: patella and tibial tuberosity
A: extend knee
IN: femoral nerve

Question 10

What is the origin, insertion, action, innervation of the vastus intermedialis?

Answer 10

O: anterior surface of femur
I: patella and tibial tuberosity
A: extend knee
IN: femoral nerve

Question 11

What are the muscles of the medial compartment of thigh?

Answer 11

pectineus (superficial)
adductor longus
gracilis

adductor brevis (deep)
adductor magnus

Question 12

What is the origin, insertion, action, innervation of the adductor longus?

Answer 12

O: pubis
I: linea aspera
A: adduct and flex hip
IN: obturator nerve

Question 13

What is the origin, insertion, action, innervation of the pectineus?

Answer 13

O: pectineal line
I: linea aspera
A: adduct and flex hip
IN: femoral + obturator nerve

Question 14

What is the origin, insertion, action, innervation of the gracilis?

Answer 14

O: inferior ramus of pubis
I: medial surface tibia
A: adduct hip, flex knee, medially rotate
IN: obturator nerve

Question 15

What is the origin, insertion, action, innervation of the adductor brevis?

Answer 15

O: inferior ramus of pubis
I: linea aspera
A: adduct hip
IN: obturator nerve

Question 16

What is the origin, insertion, action, innervation of the adductor magnus?

Answer 16

O: ischial and pubic rami
I: linea aspera, adductor tubercle
A: (Ant) adduct, medially rotate, flex hip
(Post) extension
IN: obturator and sciatic nerve