lower extremity anatomy

Question 1

Femoral Nerve

Answer 1

L2-L4

Question 2

Obturator Nerve

Answer 2

L2-L4

Question 3

Sciatic Nerve

Answer 3

L4-S3

Question 4

Tibial Nerve

Answer 4

L4-S3

Question 5

Common Fibular Nerve

Answer 5

L4-S2

Question 6

Patellar Reflex

Answer 6

test patellar tendon reflex which tests the function of the femoral never and spinal cord segments L2-L4
-Westphal’s sign

Question 7

Westphal’s Sign

Answer 7

absence or decrease of patellar tendon reflex

Question 8

Calcaneal Tendon Reflex

Answer 8

tests S1 and S2 nerve roots

Question 9

Iliopsoas Muscle

Answer 9

*chief flexor of the thigh
T12-L5
insert on lesser trochanter
femoral n-iliacus
ventral rami l1-l3-psoas major
ventral rami l1-l2-psoas minor
iliopectineal bursa

Question 10

Sartorius Muscle

Answer 10

longest and most superficial anterior muscle
flex, abduct, laterally rotate thigh
flex leg
femoral N

Question 11

Pes Ansernius

Answer 11

common insertion for gracilis, sartorius, and semitendinosis
innervated by 3 separate nerves

Question 12

Hilton’s Law

Answer 12

A joint is innervated by the very same nerves that supply the muscles that move the joint and supply the skin over the joint

Question 13

Medial Compartment of Thigh

Answer 13

Adduction and Obturator Nerve

Question 14

Anterior Compartment of Thigh

Answer 14

Extension and Femoral Nerve

Question 15

Posterior

Answer 15

Flexion and Sciatic nerve

Question 16

Adductor Magnus M.

Answer 16

largest adductor muscle
superior part lies deep to adductor brevis
2 parts
-adductor portion
-hamstring portion

Question 17

Adductor Part of Adductor Magnus

Answer 17

proximal attachment: ischiopubic ramus
distal attachment: gluteal tuberosity, linea aspera
obturator N.
adducts and flexes thigh

Question 18

Hamstring Part of Adductor Magnus

Answer 18

proximal attachment: ischial tuberosity
distal attachment: adductor tubercle (medial epicondyle)
tibial division of sciatic nerve
adducts and extends thigh

Question 19

Obturator Externus M

Answer 19

deep to pectineus
attachment: obturator foramen
obturator nerve

Question 20

Groin Pull

Answer 20

Groin: junction between trunk and thigh

strain/stretch/ tear of proximal attachments of thigh adductor/flexor muscles

Question 21

Adductor Brevis M

Answer 21

deep to pectineus and adductor longus
obturator nerve
adducts and flexes thigh

Question 22

Gracilis M

Answer 22

long strap like muscle
only adductor to cross knee joint
obturator nerve
attaches to pes ansernius 
adducts thigh
flex and medial rotate leg

Question 23

Adductor Longus M.

Answer 23

attachment: body of pubis to middle linea aspera
obturator nerve
adducts and flexes thigh

Question 24

Pectineus M

Answer 24

femoral nerve (occasional branch of obturator n)
adduct and flex thigh

Question 25

Osgood-Schlatter Disease

Answer 25

commonly occurs in children quads pull on tendon that connects kneecap to shinbone repeated stress can cause tendon to pull away causing pain and swelling in some cases the body may choose to grow new bone to close gap

Question 26

Quadriceps Femoris

Answer 26

``` Vastus lateralis-extend leg Vastus Intermedius-extend leg Vastus medialis-extend leg Rectus femoris-extend leg and flex thigh Femoral N ```