Hip/Thigh Q2

Question 1

Psoas Major

Answer 1

Function: Hip flexion

Innervation: Anterior rami (L1, L2, L3)

Origin: Lumbar transverse processes, intervertebral discs and bodies from T12-L5

Insertion: Lesser trochanter of the femur

Question 2

Iliacus

Answer 2

Function: Hip flexion

Innervation: Femoral nerve (L2, L3)

Origin: Iliac fossa

Insertion: Lesser trochanter of femur

Question 3

Pectineus

Answer 3

Function: Hip adduction and flexion

Innervation: Femoral nerve (L2, L3)

Origin: Pectineal line of pelvis

Insertion: Lesser trochanter of the femur

Question 4

Adductor Longus

Answer 4

Function: Hip adduction and internal rotation

Innervation: Obturator nerve (L2, L3, L4)

Origin: Body of pubis

Insertion: Linea aspera of femur

Question 5

Adductor Brevis

Answer 5

Function: Hip adduction and internal rotation

Innervation: Obturator nerve (L2, L3)

Origin: Body of pubis and inferior pubic ramus

Insertion: Linea aspera of femur

Question 6

Adductor Magnus

Answer 6

Function: Hip adduction and internal rotation.
Assists in hip extension and adduction

Innervation: Obturator nerve (L2, L3, L4)
Sciatic nerve (tibial division) (L2, L3, L4)

Origin: Adductor part - ischiopubic ramus
Hamstring part - ischial tuberosity

Insertion: Posterior surface of proximal femur, linea aspera, medial supracondylar line
Adductor tubercle and supracondylar line

Question 7

Gracilis

Answer 7

Function: Hip adduction and knee flexion

Innervation: Obturator nerve (L2, L3)

Origin: Body of the pubis, the inferior pubic ramus, and the ramus of the ischium

Insertion: Pes anserine of the tibia

Question 8

Sartorius

Answer 8

Function: Hip flexion and external rotation, knee flexion

Innervation: Femoral nerve (L2, L3)

Origin: Anterior superior iliac spine

Insertion: Pes anserine of the tibia