Chapter 9 Hip and Pelvic Joint

Question 1

Iliacus O&I

Answer 1

origin: inner surface of the ilium
insertion: lesser trochanter of the femur and shaft just below

Question 2

Iliacus Action

Answer 2

flexion of hip, anterior pelvic tilt, external rotation of hip, transverse pelvic rotation contra laterally when ipsilateral fetus is stabilized

Question 3

Iliacus Innervation

Answer 3

lumbar nerve and femoral nerve (L2-L4)

Question 4

Psoas Major and Minor O&I

Answer 4

Origin: lower borders of the transverse processes (L1-L5), sides of the bodies of the last thoracic vertebra (T12), the lumbar vertebrae (L1-L5), intervertebral fibrocartilages, and base of the sacrum
Insertion: lesser trochanter of the femur and shaft just below posts minor; pectineal line (of pubis) and iliopectineal eminence

Question 5

Psoas Major and Minor Action

Answer 5

flexion of hip, anterior pelvic rotation, flexion of lumbar spine, external rotation of the hip, transverse pelvic rotation contra laterally when ipsilateral femur is stabilized, lateral flexion of lumbar spine, lateral pelvic rotation to contralateral side
(psoas minor is involved only in lumbar spine movements)

Question 6

Psoas Major and Minor Innervation

Answer 6

lumbar nerve and femoral nerve (L2-L4)

Question 7

Rectus Femoris O&I

Answer 7

Origin: anterior inferior iliac spine of the ilium and groove (posterior) above the acetabulum
Insertion: superior aspect of the patella and patella tendon to the tibial tuberosity

Question 8

Rectus Femoris Action

Answer 8

flexion of hip, extension of knee, anterior pelvic rotation

Question 9

Rectus Femoris Innervation

Answer 9

femoral nerve (L2-L4)

Question 10

Sartorius O&I

Answer 10

Origin: anterior superior iliac spine and notch just below the spine
Insertion: anterior medial surface of the tibia just below the condyle

Question 11

Sartorius Action

Answer 11

flexion of the hip, flexion of the knee, anterior pelvic rotation, external rotation of the thigh as it flexes the hip and knee, weak internal rotation of the knee, abduction of the hip

Question 12

Sartorius Innervation

Answer 12

femoral nerve (L2,L3)

Question 13

Pectineus O&I

Answer 13

Origin: space 1 inch wide on the front of the pubis just above the crest
Insertion: rough line leading from the lesser trochanter down to the line aspera

Question 14

Pectineus Action

Answer 14

flexion of hip, adduction of hip, external rotation

Question 15

Pectineus Innervation

Answer 15

femoral nerve (L2-L4)

Question 16

Adductor Brevis O&I

Answer 16

Origin: front of the inferior pubic rams just below the origin of the adductor longus
Insertion: lower 2/3 of the pectineal line of the femur and the upper hand of the medial lip of the line aspera

Question 17

Adductor Brevis Action

Answer 17

adduction of hip, external rotation as it adducts hip, assist in flexion of hip

Question 18

Adductor Brevis Innervation

Answer 18

obturator nerve (L3-L4)

Question 19

Adductor Longus O&I

Answer 19

Origin: anterior pubis just below its crest
Insertion: middle 1/3 of the line aspera

Question 20

Adductor Longus Action

Answer 20

adduction of the hip, assists in flexion of hip

Question 21

Adductor Longus Innervation

Answer 21

obturator nerve (L3-L4)

Question 22

Adductor Magnus O&I

Answer 22

Origin: edge of the entire pubic rams and the ischium and ischial tuberosity
Insertion: whole length of the line aspera, inner condyloid ridge, and adductor tubercle

Question 23

Adductor Magnus Action

Answer 23

adduction of hip, external rotation as the hip adducts, extension of the hip

Question 24

Adductor Magnus Innervation

Answer 24

anterior: obturator nerve (L2-L4)
posterior: sciatic nerve (L4, L5, S1-S3)

Question 25

Gracilis O&I

Answer 25

Origin: anteromedial edge of the descending rams of the pubis
Insertion: anterior medial surface of the tibia below the condyle

Question 26

Gracilis Action

Answer 26

adduction of hip, weak flexion of the knee, assists with flexion of hip, internal rotation of hip, weak internal rotation of knee

Question 27

Gracilis Innervation

Answer 27

obturator nerve (L2-L4)

Question 28

Semitendinosus O&I

Answer 28

Origin: ischial tuberosity
Insertion: upper anterior medial surface of the tibia just below the condyle

Question 29

Semitendinosus Action

Answer 29

flexion of the knee, extension of the hip, posterior pelvic rotation, internal rotation of hip, internal rotation of the flexed knee

Question 30

Semitendinosus Innervation

Answer 30

sciatic nerve–tibial division (L5, S1, S2)

Question 31

Semimembranosus O&I

Answer 31

Origin: Ischial tuberosity
Insertion: Posteromedial surface of the medial tibial condyle

Question 32

Semimembranosus Action

Answer 32

flexion of knee, extension of hip, posterior pelvic rotation, internal rotation of hip, internal rotation of knee

Question 33

Semimembranosus Innervation

Answer 33

sciatic nerve–tibial division (L5, S1, S2)

Question 34

Biceps Femoris O&I

Answer 34

Origin: long head: ischial tuberosity
short head: lower half of the line aspera and lateral condyloid ridge
Insertion: head of fibula and lateral condyle of tibia

Question 35

Biceps Femoris Action

Answer 35

flexion of knee, extension of hip, posterior pelvic rotation, external rotation of hip, external rotation of knee

Question 36

Biceps Femoris Innervation

Answer 36

Long head: sciatic nerve–tibial division (S1-S3)

Short head: sciatic nerve–peroneal division (L5, S1, S2)

Question 37

Gluteus Maximus O&I

Answer 37

Origin: posterior 1/4 of the crest of the ilium, posterior surface of the sacrum and coccyx near the ilium, and fascia of the lumbar area
Insertion: oblique ridge on the lateral surface of the greater trochanter and the iliotibial band of the fasciae latae

Question 38

Gluteus Maximus Action

Answer 38

extension of hip, posterior pelvic rotation, external rotation of hip, upper fibers: assist in hip abduction

Question 39

Gluteus Maximus Innervation

Answer 39

inferior gluteal nerve (L5, S1, S2)

Question 40

Gluteus Medius O&I

Answer 40

Origin: lateral surface of the ilium just below the crest
Insertion: posterior and middle surfaces of the greater trochanter of the femur

Question 41

Gluteus Medius Action

Answer 41

abduction of hip, lateral pelvic rotation to ipsilateral side,
anterior fibers: internal rotation of hip, flexion of hip, anterior pelvic rotation
posterior fibers: external rotation of hip, extension of hip, posterior pelvic rotation

Question 42

Gluteus Medius Innervation

Answer 42

superior gluteal nerve (L4, L5, S1)

Question 43

Gluteus Minimus O&I

Answer 43

Origin: lateral surface of the ilium just below the origin of the gluteus medius
insertion: anterior surface of the greater trochanter of the femur

Question 44

Gluteus Minimus Action

Answer 44

abduction of hip, lateral pelvic rotation to ipsilateral side, hip internal rotation as femur is abducted, flexion of hip, anterior pelvic rotation

Question 45

Gluteus Minimus Innervation

Answer 45

superior gluteal nerve (L4, L5, S1)

Question 46

Tensor Fasciae Latae O&I

Answer 46

Origin: anterior iliac crest and surface of the ilium just below the crest
Insertion one-fourth of the way down the thigh into the iliotibial tract, which in turn inserts onto Gerdy’s tubercle of the anterolateral tibial condyle

Question 47

Tensor Fasciae Latae Action

Answer 47

abduction of hip, lateral pelvic rotation to ipsilateral side, flexion of hip, anterior pelvic rotation, internal rotation of hip as it flexes

Question 48

Tensor Fasciae Latae Innervation

Answer 48

superior gluteal nerve (L4, L5, S1)