Block 3: GL 23, The Knee Joint

Question 1

Foot drop is an issue with what nerve

Answer 1

dorsal fibular nerve

Question 2

Lateral Compartment

f(x)
innervation

Answer 2

f(x): eversion

innervation: superficial fibular nerve

Question 3

Tibial nerve innervates

f(x)

Answer 3

posterior compartment

f(x): plantarflexion

Question 4

Medial Circumflex Artery supplies

Answer 4

the head/neck of the femur

Question 5

What is the arterial supply to the gluteus medius and minimus?

Answer 5

inferior gluteal artery

Question 6

PCL f(x)

Answer 6

prevents posterior displacement of the tibia relative to the femur

Question 7

LCL f(x)

Answer 7

limits leg extension and adduction

Question 8

What is the result of de-innervation of the dorsiflexors?

Answer 8

foot drop, steppage gait

Question 9

When is the deep fibular nerve vulnerable to injury?

Answer 9

as it arises from the common fibular at the neck of the femur

Question 10

What happens when the popliteus cotracts?

Answer 10

it rotates the head of the femur laterally, draws the meniscus posteriorly to allow the knee to unlock

Question 11

Piriformis Entrapment

Answer 11

compression of the sciatic nerve by the piriformis

Question 12

Tibialis Anterior
f(x)
innervation

Answer 12

innervation: deep fibular nerve

f(x): inversion

Question 13

Hallus Valgus

Answer 13

lateral displacement of the great toe

Question 14

Housemaid’s Knee

Answer 14

excessively compression the prepatellar bursa leads to pain and swelling

Question 15

How is the PCL damaged

Answer 15

by the posterior displacement of the tibia upon the

Question 16

What exhibits PCL tear?

Answer 16

ability to push the tibia beneath the femur exhibits this injury

Question 17

Plantar Fasciitis

Answer 17

results from tearing or inflammation of the plantar aponeurosis

Question 18

Pott’s Fracture

Answer 18

bimalleolar fracture

Question 19

Posterior Drawer Sign

Answer 19

patient pushes tibia backward while the knee is flexed to displace anteriorly