Thigh Lecture 10

Question 1

Origin Insertion of Iliopsoas

Answer 1

Iliacus part of iliac fossa and lesser trochanter

Question 2

Action Innervation of iliopsoas?

Answer 2

Flexes internally rotates hip, extends and laterally beds lumbar vertebral column.
Iliacus via femoral nerve

Question 3

Sartorius origin and insertion?

Answer 3

ASIS and Upper part of medial surface of tibia

Question 4

Sartorius action innervation?

Answer 4

Flexes abducts and externally rotates hip, flexes and internally rotates knee
Femoral nerve

Question 5

Pectineus origin and insertion?

Answer 5

Pectineal line of pubis and upper half of pectineal line of femur

Question 6

Pectineus action and innervation?

Answer 6

Flexes adducts and internally rotates hip

Femoral nerve

Question 7

Rectus femoris origin and insertion?

Answer 7

AIIS and posterosuperior aspect of rim of acetabulum.

Tibial tuberosity via patellar tendon

Question 8

Rectus femoris action innervation?

Answer 8

extends the knee and flexes the hip, femoral nerve

Question 9

What are the muscles of the anterior thigh compartment?

Answer 9

Iliopsoas
Sartorius
Pectineus
Quadriceps
*all innervated by femoral nerve

Question 10

What covers the vastus lateralis?

Answer 10

Fascia from tensor fascia latae? check

Question 11

Origin and insertion of Vastus lateralis?

Answer 11

Intertrochanteric line greater trochanter gluteal tuberosity and upper part of linea aspera.
Tibial tuberosity via patellar tendon.

Question 12

Action and Innervation of Vastus lateralis?

Answer 12

Extends knee and femoral nerve (L2-4)

Question 13

what is the only quadriceps muscle that can flex hip?

Answer 13

Rectus femoris because it is the only one that crosses the hip

Question 14

What spinal level makes up femoral nerve?

Answer 14

L2-L4

Question 15

Vastus medialis origin and insertion?

Answer 15

Intertrochanteric line, greter trochanter, medial lip of linea aspera, medial supracondylar line.
Tibial tuberosity via patellar tendon

Question 16

Action innervation of vastus medialis?

Answer 16

Extends knee and Femoral Nerve

Question 17

Vastus intermedius origin and insertion?

Answer 17

Upper 2/3 of femoral shaft and distal half of intermuscular septum.
Tibial tuberosity via patellar tendon.

Question 18

Action and innervation of vastus intermedius?

Answer 18

Extends knee and Femoral nerve

Question 19

What are the muscles of the medial thigh compartment?

Answer 19

Gracilis
Addductor longus, brevis, magnus
Obturator externus

Question 20

In general what artery, nerve, and action supply medial thigh compartment?

Answer 20

Obturator artery (branch of internal iliac)
Obturator nerve, and tibial nerve ( to hamstring portion of adductor mag.)
Adduction

Question 21

What creates the adductor hiatus?

Answer 21

Adductor magnus

Question 22

Adductor magnus what is special?

Answer 22

The most medial part of the magnus acts similar to the posterior compartment (hamstrings)

Question 23

Gracilis origin and insertion?

Answer 23

Front of body of pubis and inferior ramus of pubis.

Upper part of medial surface of shaft of tibia

Question 24

Gracilis action and innervation?

Answer 24

Adduct hip, flex knee, assist internal rotation of tibia.

Anterior division of obturator nerve (L2-L3)

Question 25

Adductor longus origin and insertion?

Answer 25

Crest and symphysis of pubis. | Medial lip pf linea aspera

Question 26

Adductor longus action innervation?

Answer 26

Adduct, flex, externally roate thigh | Anterior division of obturator nerve

Question 27

Adductor brevis origin and insesrtion?

Answer 27

body of inferior ramus of pubis. | Pectineal line of femur and upper part of linea aspera

Question 28

Action innervation of adductor brevis?

Answer 28

Adduct flexes and internally rotates hip | ant. division of obturator nerve

Question 29

Adductor magnus origin and insertion?

Answer 29

Ischial tuberosity and ischiopubic ramis. | Medial side of femur adductor tubercle.

Question 30

Adductor magnus action innervatioin?

Answer 30

adducts hip, upper fibers flex and internally rotate hip lower fibers extend ext. rotate hip. ant. division of obturator and tibial branch of sciatic nerve

Question 31

Obturator externus origin and insertion?

Answer 31

External surface of pubis and obturator foramen. | Trochanteric fossa

Question 32

Obturator externus action innervation?

Answer 32

``` externally rotates hip obturator nerve (L3-L4) ```

Question 33

In general what is the innervation, vascular supply and action of posterior thigh compartment?

Answer 33

Common peroneal nerve to the biceps femoris brevis Tibial nerve Perforating arteries Hip extension and knee flexion

Question 34

Of adductor longus, brevis, magnus which one has the different action?

Answer 34

adductor longus externally roates hip other two internally rotate hip. Also magnus medial fibers externally rotate hip.

Question 35

Function in general of quadriceps?

Answer 35

Extend knee | Exception is rectus femoris it also flexes hip

Question 36

What makes up the hamstrings?

Answer 36

Biceps femoris (long/short head) Semimembranous Semitendinosus

Question 37

Biceps femoris long head origin and insertion.

Answer 37

ischial tuberosity. | Lateral side of head of fibula and lateral condyle of tibia

Question 38

Biceps femoris long head action innervation?

Answer 38

Flexes knee and externally rotates knee, long head extends hip TIbial nerve

Question 39

Biceps femoris short head origin insertion?

Answer 39

Lateral lip linea aspera. | Lateral side of head of fibula and lateral condyle of tibia

Question 40

Biceps femoris action innervation?

Answer 40

Flexes knee and externally roates knee | Common peroneal nerve

Question 41

Semimembranosus origin and insertion?

Answer 41

ischial tuberosity and adjacent ischial ramus. | Posteromedial aspect of medial tibial condyle

Question 42

What is the exception to the hamstrings innervation?

Answer 42

Short head biceps femoris is innervated by common peroneal nerve not tibial.

Question 43

Semimembranosus action innervation?

Answer 43

Flexes knee rotates it internally and extends the hip | tibial nerve

Question 44

Semitendinosus origin and insertion?

Answer 44

common with long head of biceps longus- ischial tuberosity. | Upper part of medial surface of tibia

Question 45

Semitendinosus action innervation?

Answer 45

flexes knee internally rotates it and extends the hip. | Tibial nerve