Muscles of the anterior and medial femoral compartments

Question 1

psoas major origin and insertion

Answer 1

O anterior surfaces of bodies and transverse processes of last thoracic and all lumbar vertebrae

I lesser trochanter

Question 2

what is origin of the iliacus

Answer 2

iliac fossa

Question 2

iliopsoas

Answer 2

**consists of psoas major and iliacus

Question 3

what is the action of the iliopsoas muscles

Answer 3

flexes

laterally rotates thigh

Question 3

what is the psoas major innervated by

Answer 3

ventral rami of spinal nerves L 1 2 3

Question 3

innervation of psoas major

Answer 3

ventral rami spinal nerves L1,2,3

Question 4

what is the iliacus innervated by

Answer 4

femoral n (L2, L3)

Question 4

action of psoas major

Answer 4

flexes and laterally rotates thigh

Question 5

what is the insertion of the sartorius

Answer 5

medial tibia below condyle with gracilis and semitendinosus muscles at pes anserinus

Question 6

action of the sartorius

Answer 6

flexes leg and rotates it medially

flexes thigh and rotates laterally

abducts lower limb when knee is locked

Question 6

what makes up the pes anserinus

Answer 6

graciliis
semitendinosus
and sartorius

Question 6

action of iliacus

Answer 6

flexion and lateral rotation of thigh

Question 6

innervation of iliacus

Answer 6

femoral nerve-L2,3

Question 7

what innervates the sartorius

Answer 7

femoral nerve

Question 8

what makes up the quads?

Answer 8

rectus femoris 
vastus lateralis 
vastus medialis
vastus intermedias 
articularis genu

Question 9

what component of the quads crosses both hip and knee joint>

Answer 9

rectus femoris

Question 9

what is the origin of the two heads of the rectus femoris

Answer 9

straight head ASIS

reflected head superior brim of acetabulum

Question 9

innervation of sartorious

Answer 9

femoral nerve

Question 9

muscles of quadriceps femoris?

Answer 9

rectus femorisvastus lateralisvastus medialisvastus intermedialis

Question 10

what is the insertion of the rectus femoris

Answer 10

superior surface of the patella

to tibial tuberosity via patellar ligament

Question 10

what is the action of the rectus femoris

remember it crosses two joints

Answer 10

flex thigh

extension of leg (knee goes straight)

Question 10

action of rectus femoris?

Answer 10

flexion of thighextension of leg

Question 11

what innervates the quads

Answer 11

femoral nerve

Question 11

innervation of rectus femoris

Answer 11

femoral nerve

Question 12

which quad is bipennate

Answer 12

rectus femoris

Question 13

which quad is responsible for maintaining normal patellar tracking

Answer 13

vastus medialis

Question 13

which quad has an effect on synovial lining of the knee

Answer 13

articularis genu (deepest portion of vastus intermedius) prevents the synovial membrane from becoming trapped between patella and femur when leg is extended

Question 13

what is the action of the vastus lateralis

Answer 13

extension of the leg

Question 13

attachment of iliacus

Answer 13

origin: iliac fossa insertion: with psoas major to lesser trochanter

Question 13

innervation of vastus medialis

Answer 13

femoral nerve

Question 13

action of vastus intermedius

Answer 13

extension of leg

Question 13

innervation of vastus intermedius

Answer 13

femoral nerve

Question 13

innervation of articularis genu

Answer 13

femoral nerve

Question 13

muscles of medial femoral compartment?

Answer 13

pectinusadductor longusadductor brevisadductor magnusgracilisobturator externus

Question 15

anterior femoral muscles?

Answer 15

``` psoas major iliacus sartorius rectus femoris vastus lateralis vastus intermedius ``` vastus medialis articular genu

Question 16

action of adductor longus?

Answer 16

adduction, flexion, assists in rotation of thigh

Question 17

attachments of pectinus?

Answer 17

origin :superior pubic ramus (pectineal line of pubis) insertion: posterior femur below lesser trochanter (pectineal line of femur)

Question 18

innervation of pectineus?

Answer 18

femoral nerve, obturator nerve, or both accessory obturator nerve when present

Question 19

innervation of adductor longus?

Answer 19

obturator nerve (anterior division)

Question 21

action of adductor brevis?

Answer 21

adduction, flexion, assists in rotation of thigh

Question 22

attachments of rectus femoris?

Answer 22

origin: straight head - AIIS reflected head - superior brim of acetabulum insertion:superior surface of patella; to tibial tuberosity via patellar ligament

Question 25

attachments of vastus lateralis

Answer 25

origin: anterolateral surface of most of femur insertion: lateral border of patella; to tibial tuberosity via patellar ligament

Question 26

attachments of gracilis?

Answer 26

origin:inferior pubic ramus near symphysisinsertion:medial surface of tibia below condyle with sartorious and semitendinosus at pes anserinus

Question 27

action of gracilis?

Answer 27

adducts thighflexes and medially rotates leg

Question 28

attachments of vastus medialis

Answer 28

origin: anteromedial surface of most of femur insertion: medial border of patella; to tibial tuberosity via patellar ligament

Question 29

innervation of gracilis?

Answer 29

obturator nerve (anterior)

Question 31

action of obturator externus?

Answer 31

lateral rotation of thigh

Question 32

attachments of vastus intermedius

Answer 32

origin: most of anterior surface of femur insertion: deep surface of tendon of rectus femoris and other vastus muscles via aponeurosis

Question 33

innervation of obturator externus?

Answer 33

obturator nerve (posterior division)

Question 34

what attaches at pes anserinus?

Answer 34

gracilis, sartorius, semitendinosus

Question 35

attachments of articularis genu

Answer 35

origin: lower anterior surface of femu rinsertion: upper portion of synovial membrane of knee joint

Question 38

anterior femoral muscles?

Answer 38

``` psoas majo riliacus sartorius rectus femoris vastus lateralis vastus intermedius ``` vastus medialis articular genu

Question 40

attachments of pectinus?

Answer 40

origin: superior pubic ramus insertion: posterior femur below lesser trochanter (pectineal line of femur)

Question 43

attachments of adductor longus?

Answer 43

origin: front of body of pubis insertion: middle portion of medial lip of linea aspera

Question 46

attachments of adductor brevis?

Answer 46

origin: inferior pubic ramus insertion: upper one half of medial lip of linea aspera

Question 50

action of adductor magnus?

Answer 50

entire muscle adducts thigh proximal - adducts and flexes, assists in rotation distal - adducts and extends, assists in rotation

Question 51

innervation of adductor magnus?

Answer 51

proximal - obturator nerve (posterior division) distal - tibial nerve

Question 58

attachments of obturator externus?

Answer 58

origin: outer surface of obturator membrane and outer margins of obturator foramen insertion: trochanteric fossa

Question 59

how has the understanding of the iliopsoas muscle led to doing crunches instead of straight leg sit ups? what is the result of overruse of this muscle

Answer 59

because this muscle is working when you have your feet on the ground in a straight leg sit up whereas if you do a crunch you are more working your abdominal muscles

Question 60

what does it mean if a patient has pain when they arise from a sitting position

Answer 60

probably an injury to the iliopsoas or overuse

Question 61

what medial femoral muscle functions both as an adductor and as a hamstring muscle?

Answer 61

the adductor magnus

Question 62

which adductor muscle has an opening which provides access to vascular structures to pass from the anterior femoral compartment to the popliteal fossa?

Answer 62

adductor magnus adductor hiatus is what it is called and the membrane itself is called the vasoadductor membrane

Question 63

which medial femoral muscle has an action both at the hip and the knee?

Answer 63

gracilis adducts the thigh flexes and medially rotates the leg