Knee and Lower Leg

Question 1

What unites the tibia and fibula?

Answer 1

Interosseous membrane

Question 2

Between the fibula and tibia, which is the more medial one?

Answer 2

Tibia

Question 3

True or false, the fibula is nonweightbearing

Answer 3

True! The tibia does all the weightbearing and is therefore much thicker

Question 4

Useful radiograph of the parts of the tibia and fibula

Answer 4

Question 5

What is the largest sesamoid in the body?

Answer 5

The patella

Question 6

What is the definition of a sesamoid?

Answer 6

Bone formed within the tendon of a muscle

Question 7

What stabilize the hinge-like motion of the knee?

Answer 7

The collateral ligaments. One on each side of the joint

Question 8

Which ligaments are responsible for preventing anterior and posterior displacement of the tibia relative to the femur (respectively)

Answer 8

Anterior cruciate ligament

Posterior cruciate ligament

Question 9

Another pretty nice radiograph of some of the bones of the knee area. Check it out if you want I guess. Idk, I’m not forcing you to. You do you, I just feel like it would be useful. Okay, bye have fun.

Answer 9

Question 10

What type of joint is the knee joint?

Answer 10

Synovial, hinge joint. largest in the body

Question 11

Okay, haha, we back at it with another radiograph of the bones of the knee. This one is also pretty good tho so I felt the urge to show it

Answer 11

Question 12

Which structure improves the congruency between the femoral and tibial condyles during joint movement?

Answer 12

Menisci

Question 13

Small fluid-filled, pal-like synobial sac that reduces friction and cushions pressure points between bones and tendones and muscles near joints

Answer 13

Bursa

Question 14

Importance of the suprapatellar bursa

(Hint: vulnerability)

Answer 14

Vulnerable to infection following penetrating trauma

Allows spread of infection directly into knee joint

Question 15

Functions of anterior compartment of the lower leg

Answer 15

Extends the toes

Inverts foot

Dorsiflexors of ankle

Question 16

Which nerves innervate the posterior compartment of the lower leg?

Answer 16

Tibial Nerve

Question 17

Major actions of the superficial group of the posterior compartment of the lower leg

Answer 17

Plantar flexors of the foot

Question 18

Function of the popliteus

Answer 18

Medially rorate flexed knee

Flexes the knee

Unlocks knee by initiating lateral rotation of femur on tibia

Question 19

In our everyday lives, what do the posterior superficial group compartment allow us to do?

Answer 19

Propel body forward off planted foot during walking

Elevate the body upward onto toes while standing

Question 20

Major arteries of the knee

Answer 20

Just know the femoral, popileteal, anterior tibial, posterior tibial and peroneal

Question 21

Function of the lateral compartment of the lower leg

Answer 21

Primarily everters of the foot

Also assist to plantar flex the ankle

Question 22

Major veins of the legs diagram

Answer 22

Question 23

On an exam, if something isn’t intact on a radiograph, assume it just isn’t intact/it’s torn

Answer 23

Idk what it means, just remember it

Question 24

What color are ligaments on the MRIs she gives us?

Answer 24

mofucka Black

Question 25

Diagram of the bursa of the knee

Answer 25

Question 26

How far away are the stars?

Answer 26

Atleast 3 football fields

Question 27

Inversion vs Eversion of the foot.

Answer 27

Inversion: Rotate sole of foot towards midline

Eversion: Rotate sole of foot away from midline