Anterior Thigh

Question 1

Pectineus: Proximal Attachment

Answer 1

Superior ramus of pubis

Question 2

Pectineus: Distal Attachment

Answer 2

Pectineal line of femur (just inferior to lesser trochanter)

Question 3

Pectineus: Innervation

Answer 3

Femoral nerve (L2,L3) may receive a branch from obturator nerve

Question 4

Pectineus: Action

Answer 4

Adducts and flexes thigh (assists with medial rotation of thigh)

Question 5

Illiopsoas - Psoas Major: Proximal Attachment

Answer 5

Sides of T12–L5 vertebrae and discs between them; transverse processes of all lumbar vertebrae

Question 6

Illiopsoas - Psoas Major: Distal Attachment

Answer 6

Lesser trochanter of femur

Question 7

Illiopsoas - Psoas Major: Innervation

Answer 7

Anterior rami of lumbar nerves (L1, L2, L3)

Question 8

Illiopsoas - Psoas Major: Action

Answer 8

Act conjointly in flexing thigh at hip joint and in stabilizing this joint and in stabilizing this joint

Question 9

Illiopsoas - Psoas Minor: Proximal Attachment

Answer 9

Sides of T12–L1 vertebrae and intervertebral discs

Question 10

Illiopsoas - Psoas Minor: Distal Attachment

Answer 10

Pectineal line, iliopectineal emi-nence via iliopubic arch

Question 11

Illiopsoas - Psoas Minor: Innervation

Answer 11

Anterior rami of lumbar nerves (L1, L2)

Question 12

Illiopsoas - Psoas Minor: Action

Answer 12

Act conjointly in flexing thigh at hip joint and in stabilizing this joint and in stabilizing this joint

Question 13

Illiopsoas - Illiacus: Proximal Attachment

Answer 13

Iliac crest, iliac fossa, ala of sacrum, and anterior sacro-iliac ligaments

Question 14

Illiopsoas - Illiacus: Distal Attachment

Answer 14

Tendon of psoas major, lesser trochanter, and femur distal to it

Question 15

Illiopsoas - Illiacus: Innervation

Answer 15

Femoral nerve (L2, L3)

Question 16

Illiopsoas - Illiacus: Action

Answer 16

Act conjointly in flexing thigh at hip joint and in stabilizing this joint and in stabilizing this joint

Question 17

Sartorius: Proximal Attachment

Answer 17

• ASIS

- Superior part of notch inferior to it

Question 18

Sartorius: Distal Attachment

Answer 18

Superior part of medial surface of tibia

Question 19

Sartorius: Innervation

Answer 19

Femoral nerve (L2, L3)

Question 20

Sartorius: Action

Answer 20

• Flexes, abducts, and laterally rotates thigh at hip joint

- Flexes leg at knee joint, (medially rotating leg when knee is flexed)

Question 21

Rectus Femoris: Proximal Attachment

Answer 21

AIIS and ilium superior to acetabulum

Question 22

Rectus Femoris: Distal Attachment

Answer 22

• Quadriceps tendon
• Base of patella
• Indirectly through patellar ligament to tibial tuberosity

Question 23

Rectus Femoris: Innervation

Answer 23

Femoral nerve

Question 24

Rectus Femoris: Action

Answer 24

• Extend leg at knee joint
• Steadies hip joint
• Helps iliopsoas flex thigh

Question 25

Vastus Lateralis: Proximal Attachment

Answer 25

- Greater trochanter | - Lateral lip of linea aspera of the femur

Question 26

Vastus Lateralis: Distal Attachment

Answer 26

- Quadriceps tendon - Base of patella - Indirectly through patellar ligament to tibial tuberosity - Lateral patellar retinacula

Question 27

Vastus Lateralis: Innervation

Answer 27

Femoral nerve

Question 28

Vastus Lateralis: Action

Answer 28

Extend leg at knee joint

Question 29

Vastus Medialis: Proximal Attachment

Answer 29

- Intertrochanteric line | - Medial lip of linea aspera of the femur

Question 30

Vastus Medialis: Distal Attachment

Answer 30

- Quadriceps tendon - Base of patella - Indirectly through patellar ligament to tibial tuberosity - Medial patellar retinacula

Question 31

Vastus Medialis: Innervation

Answer 31

Femoral nerve

Question 32

Vastus Medialis: Action

Answer 32

Extend leg at knee joint

Question 33

Vastus Intermedius: Proximal Attachment

Answer 33

Anterior and lateral surfaces of shaft of femur

Question 34

Vastus Intermedius: Distal Attachment

Answer 34

- Quadriceps tendon - Base of patella - Indirectly through patellar ligament to tibial tuberosity

Question 35

Vastus Intermedius: Innervation

Answer 35

Femoral nerve

Question 36

Vastus Intermedius: Action

Answer 36

Extend leg at knee joint

Question 37

Quadratus Femoris: Proximal Attachment

Answer 37

Lateral border of the ischial tuberosity

Question 38

Quadratus Femoris: Distal Attachment

Answer 38

Quadrate tubercle on intertrochanteric crest of femur and area inferior to it

Question 39

Quadratus Femoris: Innervation

Answer 39

Nerve to quadratus femoris

Question 40

Quadratus Femoris: Action

Answer 40

- Laterally rotates thigh | - Steadies femoral head in acetabulum