Hip & Thigh

Question 1

Iliopsoas

Answer 1

made up of the psoas major and the iliacus

Question 2

Rectus femoris

Answer 2

O: ant inf iliac spine
I: tibial tuberosity via patellar ligament
A: extend knee, flex hip
Inn: femoral nerve

Question 3

Sartorius

Answer 3

O: ant sup iliac spine
I: sup part of med surface of tibia
A: flex, abduct, lat rotate thigh, assist flex of knee
Inn: femoral nerve

Question 4

Gluteus maximus

Answer 4

O: ilium, sacrum, sacrotuberous ligament
I: iliotibial tract, gluteal tuberosity of femur
A: extend thigh, lat rotation of thigh, antigravity
Inn: inferior gluteal

Question 5

Gluteus medius

Answer 5

O: iliac wings superior to minimus
I: greater trochanter of femur
A: abduct and med rotate thigh
Inn: superior gluteal

Question 6

Gluteus minimus

Answer 6

O: ilium-iliac wings
I: greater trochanter of femur
A: abduct and med rotate thigh
Inn: superior gluteal

Question 7

Tensor fasciae latae

Answer 7

O: ant sup iliac spine and iliac crest
I: via iliotibial tract to lat condyle of tibia
A: abducts, med rotates, flexes hip, helps extends knee, steadies trunk on hip joint
Inn: superior gluteal

Question 8

Adductor magnus

Answer 8

O: inf ramus of pubis, ramus and tuberosity of ischium
I: gluteal tuberosity, linea aspera, supracondylar line and adductor tubercle of femur
A: adductor part - adduct and flex thigh
A: hamstring part - adduct and extend thigh
Inn: adductor part - obturator
Inn: hamstring part - tibial division of sciatic

Question 9

Adductor longus

Answer 9

O: body of pubis
I: middle 1/3 linea aspera of femur
A: adduct thigh
Inn: obturator

Question 10

Adductor brevis

Answer 10

O: body and inferior ramus of pubis
I: pectineal line and linea aspera of femur
A: adduct thigh, slight flexor of thigh
Inn: obturator

Question 11

Piriformis

Answer 11

O: ant surface sacrum, sacrotuberus ligament
I: through greater sciatic foramen to insert on greater trochanter
A: abduct and lat rotate femur
Inn: piriformis (from ventral rami S1 and S2)

Question 12

Quadratus femoris

Answer 12

O: ischial tuberosity
I: intertrochanteric crest and inf to it
A: lat rotate thigh
Inn: quadratus femoris (from ventral rami of L5 and S1)

Question 13

Superior gemellus

Answer 13

O: ischium, blend w/ obturator internus tendon
I: greater trochanter w/ obturator internus
A: lat rotate thigh
Inn: nerve to obturator internus

Question 14

Inferior gemellus

Answer 14

O: ischium, blend w/ obturator internus tendon
I: greater trochanter w/ obturator internus
A: lat rotate thigh
Inn: nerve to quadratus femoris

Question 15

Obturator internus

Answer 15

O: inner surface obturator membrane
I: greater trochanter
A: lat rotate thigh
Inn: obturator internus (from ventral rami L5 and S1)

Question 16

Obturator externus

Answer 16

O: obturator membrane and margins of obturator foramen
I: trochanteric fossa of femur
A: lat rotate thigh, steady head of femur in acetabulum
Inn: obturator nerve

Question 17

Psoas major

Answer 17

O: bodies and intervertebral discs T12-L5
I: via common tendon w/ iliacus on lesser trochanter of femur
A: flex hip, stabilize joint
Inn: ventral rami L1-L3

Question 18

Iliacus

Answer 18

O: iliac fossa and ala of sacrum
I: via common tendon w/ psoas major to lesser trochanter of femur
A: flex hip, stabilize joint
Inn: femoral

Question 19

Muscles that make up quadriceps femoris

Answer 19

rectus femoris
vastus lateralis
vastus medialis
vastus intermedius

Question 20

Vastus lateralis

Answer 20

O: greater trochanter and linea aspera of femur
I: tibial tuberosity via patellar ligament
A: extend knee
Inn: femoral nerve

Question 21

Vastus medialis

Answer 21

O: intertrochanteric line and linea aspera of femur
I: tibial tuberosity via patellar ligament
A: extend knee
Inn: femoral nerve

Question 22

Vastus intermedius

Answer 22

O: ant and lat surfaces of femur
I: tibial tuberosity via patellar ligament
A: extend knee
Inn: femoral nerve

Question 23

Pectineus

Answer 23

O: pectin of pubis
I: pectineal line of femur
A: adduct and flex thigh
Inn: femoral and obturator

Question 24

Gracilis

Answer 24

O: body and inf ramus of pubis
I: med sup surface of tibia
A: adduct thigh, flex and medially rotate leg
Inn: obturator

Question 25

Muscles that make up the hamstrings

Answer 25

biceps femoris semimembranosus semitendinosus

Question 26

Biceps femoris

Answer 26

O: long head - ischial tuberosity O: short head - linea aspera and supracondylar line of femur I: lat side of head of fibula A: knee - flex leg and lat rotation A: hip - extend thigh Inn: long head - tibial division of sciatic nerve Inn: short head - common peroneal division of sciatic

Question 27

Semimembranosus

Answer 27

``` O: ischial tuberosity I: med condyle of tibia A: knee - flex leg and med rotation A: hip - extend thigh Inn: tibial division of sciatic ```

Question 28

Semitendinosus

Answer 28

``` O: ischial tuberosity I: med condyle of tibia and med surface inf to condyle A: knee - flex leg and med rotation A: hip - extend thigh Inn: tibial division of sciatic ```

Question 29

Glutes insertions

Answer 29

All insert on greater trochanter

Question 30

Origins of hamstring muscles

Answer 30

All originate on ischial tuberosity Insertions: biceps femoris - head of fibula semitendinosus - pes anserine semimembranosus - medial tibia All extend hip and flex knee All tibial nerve (short head of b.f. is also common peroneal)

Question 31

Insertions of quad muscles

Answer 31

All insert on tibial tuberosity via patellar ligament and extend the knee. Rectus femoris - only quad that cross the hip, flexes hip; originates on AIIS

Question 32

Deep 6 lateral rotators of hip

Answer 32

``` piriformis quadratus femoris obturator internus obturator externus superior gemelli inferior gemelli ``` all laterally rotate thigh all insert on or near greater trochanter

Question 33

Muscles inserting on lesser trochanter

Answer 33

iliacus psoas major Both flex hip

Question 34

What originates on the ASIS

Answer 34

inguinal ligament tensor fascia latae sartorius

Question 35

What muscles are innervated by the superior gluteal nerve

Answer 35

tensor fasciae latae gluteus medius gluteus minimus

Question 36

What muscles are innervated by the inferior gluteal nerve

Answer 36

gluteus maximus

Question 37

What muscles are innervated by the femoral nerve

Answer 37

pectineus sartorius quadriceps (rectus femoris, vastus muscles)

Question 38

What muscles are innervated by the obturator nerve

Answer 38

gracilis adductors longus, brevis, magnus obturator externus

Question 39

What muscles are innervated by the sciatic nerve (tibial division)

Answer 39

popliteus semitendinosus semimembranosus biceps femoris (long head) ``` tibialis posterior gastrocnemius plantaris soleus flexor digitorum longus flexor hallicus longus ``` abductor hallicus abductor digiti minimi dorsal interossei

Question 40

What muscles are innervated by the sciatic nerve (fibular/peroneal division)

Answer 40

biceps femoris (short head) ``` Deep fibular: tibialis anterior extensor hallicus longus extenosr digitorum longus fibularis tertius ``` Superficial: extensor digitorum brevis fibularis longus fibularis brevis