Anterior Thigh, Lower Extremity

Question 1

L2-L4

Answer 1

• Obturator Nerve

- Femoral Nerve

Question 2

S2-S4

Answer 2

-Pudendal Nerve

Question 3

Two Divisions of the Sciatic Nerve

Answer 3

• Tibial Nerve

- Common Fibular Nerve

Question 4

Branches of the Internal Iliac Artery

Answer 4

• Femoral Artery (Continuation)
• Superior Gluteal Artery (gluteal compartment)
• Inferior Gluteal Artery (gluteal compartment)
• Obturator Artery (medial compartment)

Question 5

Runs from the ASIS to the pubic tubercle

Answer 5

-Inguinal Ligament

Question 6

Lateral Intermuscular Septum

Answer 6

• From the iliotibial tract to the lateral epicondylar line and the lateral lip of the linea aspera.
• Separetes the Vastus Lateralis from the biceps femoris

Question 7

Medial Intermuscular Septum

Answer 7

• Between the vastus medialis and the adductor muscles

- Contributes to the formation of the Adductor Canal

Question 8

Posterior Intermuscular Septum

Answer 8

-Lies between the Adductor Magnus and the Semimembranosus muscles

Question 9

Function of the Gluteal and Lateral Compartment (general)

Answer 9

• Extension and Abduction of the Hip
• Rotation of the femur
• Innervation is from the Lumbosacral plexus

Question 10

Function of the Anterior Compartment (general)

Answer 10

• Knee Extension and Hip Flexion

- Innervation is from the Femoral Nerve (except for the Psoas Major portion of Iliopsoas)

Question 11

Function of the Medial Compartment (general)

Answer 11

• Adduction and Medial Rotation of the Femur; some also involved in hip flexion
• Most muscles are innervated by the Obturator Nerve

Question 12

Function of the Posterior Compartment (general)

Answer 12

• Knee Flexion, Hip Extension, and Medial OR Lateral Rotation of the knee
• Innervated by the Sciatic Nerve OR branches of the Sciatic Nerve (Tibial or Common Fibular Nerve)

Question 13

Two portions of Iliopsoas

Answer 13

• Psoas Major(innervated by L1-L3 ventral rami)
• Iliacus (innervated by Femoral Nerve)
• ILIOPSOAS IS THE STRONGEST HIP FLEXOR!

Question 14

4 Components of the Quadriceps

Answer 14

• Rectus Femoris
• Vastus Lateralis
• Vastus Intermedius
• Vastus Medialis

Question 15

2 Origins of the Rectus Femoris Muscle

Answer 15

• Straight Head-from the ASIS

- Reflected Head- from the superior Acetabulum

Question 16

3 Components of the Pes Anserinus (“Goose’s Foot”)

Answer 16

• Sartorius (anterior)
• Gracilis (medial)
• Semitendinosus (posterior)

Question 17

What passes through the Adductor Hiatus?

Answer 17

-Perforating branches of the Deep Femoral Artery (projecting to the Posterior Compartment)

Question 18

Boundaries of the Femoral Triangle

Answer 18

• Superomedial (base of the triangle)–>Inguinal Canal
• Lateral–>Sartorius, medial border
• Medial–>Adductor Longus, medial border
• Apex–>intersection of the Sartorius and Adductor Longus
• Floor–> Iliopsoas, Pectineus,and Add.Longus
• Roof–>Fascia Lata

Question 19

Components of the Femoral Triangle

Answer 19

• “NAVEL”

- Femoral Nerve, Femoral Artery, Femoral Vein, empty space, Lymphatics

Question 20

Site of Femoral Hernias

Answer 20

-Femoral Ring

Question 21

Branches of the Femoral Nerve

Answer 21

• Saphenous Nerve

- Nerve to the Vastus Medialis

Question 22

Boundaries of the Adductor Canal

Answer 22

Lateral–>Vastus Medialis
Medial–>Adductor Longus and Add. Magnus
Roof–>Sartorius

Question 23

Contents of the Adductor Canal

Answer 23

• Femoral Artery
• Femoral Vein
• Saphenous Nerve (cutaneous)
• Nerve to the Vastus Medialis

Question 24

Adductor Hiatus

Answer 24

• transmits Femoral artery and vein to the popliteal fossa

- located in the aponeurosis of the adductor magnus