knee ligaments

Question 1

major 5 ligaments associated with knee joint

Answer 1

• patellar ligament
• tibial collateral ligament
• fibular collateral ligament
• anterior cruciate ligament
• posterior cruciate ligament

Question 2

what is the patellar ligament the continuation of

Answer 2

quadriceps femoris tendon

Question 3

function of collateral ligaments

Answer 3

stabilize hinge-like motion of the knee

Question 4

attachments of fibular collateral ligament

Answer 4

• superiorly to lateral femoral epicondyle

- inferiorly to depression on lateral surface of fibular head

Question 5

by what is the fibular collateral ligaments seperated from the fibrous membrane

Answer 5

a bursa

Question 6

attachments of tibial collateral ligament

Answer 6

• fibrous membrane
• superiorly to medial femoral epicondyle
• inferiorly to medial margin and medial surface of tibia

Question 7

behind which attachments is the tibial collateral ligament attached to the tibia

Answer 7

attachments of sartorius, gracilis and semitendinosus tendons

Question 8

where are the two cruciate ligaments situated

Answer 8

in intercondylar region of the knee

Question 9

what do the cruciate ligaments interconnect

Answer 9

femur and tibia

Question 10

how does the anterior cruciate ligament run

Answer 10

• attaches to facet on anterior part of intercondylar area of tibia
• ascends posteriorly
• attaches to facet at back of lateral wall of intercondylar fossa of femur

Question 11

how does posterior cruciate ligament run

Answer 11

• attaches to posterior aspect of intercondylar area of tibia
• ascends anteriorly
• attaches to medial wall of intercondylar fossa of femur

Question 12

what does the anterior cruciate ligament prevent

Answer 12

anterior displacement of tibia relative to femur

Question 13

what does posterior cruciate ligament restrict

Answer 13

posterior displacement

Question 14

what are the surfaces of the knee joint in flexion

Answer 14

curved and rounded areas on posterior aspects of femoral condyles

Question 15

where do the surfaces of the knee joint move to when extended

Answer 15

broad and flat areas of inferior aspects of femoral condyles

Question 16

2 components of locking mechanism

Answer 16

• change in shape and size of femoral surfaces that articulate with tibia
• medial rotation of femur on tibia during extension

Question 17

what does medial rotation and full extension of the femur on the tibia do

Answer 17

it tightens all the associated ligaments

Question 18

what other feature keeps the knee extended when stanting

Answer 18

the situation of the body’s center of gravity

Question 19

which muscle unlocks the knee by initiating lateral rotation of the femur on the tibia

Answer 19

popliteus muscle

Question 20

which arteries suplly the kne ejoint

Answer 20

• femoral
• popliteal
• lateral circumflex fermoral
• circumflex fibular
• anterior tibial artery

Question 21

what do the vesself form around the kne ejoint

Answer 21

anastomotic network

Question 22

by branches of which nerves is the knee joint innervated

Answer 22

• obturator
• femoral
• tibial
• common fibular