Muscles of Lower Extremity and Gluteal Muscles

Question 1

Psoas Major

Answer 1

Origin: Transverse bodies of all lumbar vertebra
Insertion: Lesser trochanter of the femur (with iliacus)
Action: Hip flexion (Or trunk flexion if femur is stationary)
Innervation: Lumbar Plexus

Question 2

Iliacus

Answer 2

Origin: Iliac fossa of ilium
Insertion: Lesser trochanter of femur
Action: Hip flexion
Innervation: Femoral Nerve

Question 3

Gluteus Maximus

Answer 3

Origin: Posterior gluteal line of the ilium, lower sacrum, side of coccyx
Insertion: Gluteal tuberosity
Action: Abducts, extends, laterally rotates hip joint
Innervation: Inferior gluteal nerve

Question 4

Gluteus Medius

Answer 4

Origin: Gluteal surface of the ilium
Insertion: Greater trochanter of the femur
Action: Abducts thigh, stabilizes the hip joint
Innervation: Superior gluteal nerve

Question 5

Gluteus Minimus

Answer 5

Origin: Gluteal surface of the ilium
Insertion: Greater trochanter of the femur
Action: Abducts thigh and stabilizes hip joint
Innervation: Superior gluteal nerve

Question 6

TFL - Tensor Facia Latae

Answer 6

Origin: ASIS
Insertion: Iliotibial tract
Action: Abducts and internally rotates thigh, stabilizes hip and knee joints
Innervation: Superior gluteal nerve