Anterior femoral muscles

Question 1

Iliacus

Answer 1

Attachments: iliac fossa to lesser trochanter of femur

Actions: flexes thigh and stabilizes hip joint

Innervation: Femoral nerve and lumbar plexus branches

blood supply: iliolumbar, deep circumflex iliac, femoral, and obturator

Question 2

Psoas

Answer 2

Attachments: anterior lumbar transfers process vertebral bodies and discs to lesser trochanter of femur

Actions:Flexes thigh and stabilizes hip joint

Innervation: ventral rami L1-3

Blood supply: lumbar, iliolumbar, obturator, external iliac, femoral a.

Question 3

Rectus femoris

Answer 3

Attachments: from anterior inferior iliac spine and groove superior to the acetabulum to the base of the patella

Actions: flexes thigh and extends leg

Innervation: femoral nerve

blood supply: femoral, lateral circumflex femoral

Question 4

Sartorius

Answer 4

Attachments: anterior superior iliac spine to the medial aspect of the proximal tibia

Actions: flexes, abducts, and laterally rotates thigh, and flexes leg

Innervations: femoral nerve

bloody supply: femoral, lateral circumflex femoral, and descending genicular

Question 5

Tensor fasciae latae

Answer 5

Attachments: from anterior superior iliac spine and adjacent iliac crest to the iliotibial tract

Actions: abducts, flexes, and medially rotates thigh, and assists in maintaining extended leg

Innervation: Superior gluteal nerve

Bloody supply: lateral circumflex femoral (ascending), superior gluteal, and superficial circumflex iliac

Question 6

Vastus intermedius

Answer 6

Attachments: from the anterior aspect of the proximal 2/3rds of the femoral shaft to the base of the patella

Actions: extends leg

Innervation: femoral nerve

Bloody supply: femoral and profunda femoral a.

Question 7

Vastus lateralis

Answer 7

Attachments: from the lateral/posterior femur to the lateral border of the patella

Actions: extends leg

Innervation: femoral nerve

Bloody supply: laterial circumflex femoral (descending), femoral, and 1st perforating

Question 8

Vastus medialis

Answer 8

Attachments: From the medial/posterior femur to the medial border of the patella

Actions: extends leg

Innervations: femoral nerve

Blood supply: femoral, profunda femoral, and descending genicular a.