knee anatomy

Question 1

largest and most complex joint in body

Answer 1

knee joint

Question 2

joints consisting knee joint

Answer 2

tibiofemoral jt, patellofemoral jt, proximal tibia-fibula joint

Question 3

primary a knee joint, largest jt in body

provides greater ROM in flexion, extension

limited rotation and minimal add and abd

Answer 3

tibiofemoral joint

Question 4

plane joint, sliding gliding of patella on femur

protects anterior knee

provides mechanical advantage for the quads

Answer 4

patellofemoral joint

Question 5

synovial, plane, gliding joint

Answer 5

proximal tibia-fibula joint

Question 6

ligaments of the tibia-fibula jt and their functions

Answer 6

anterior and posterior ligaments strengthen the capsule

interosseous membrane, connects the shaft of the 2 bones, strengthen joint

Question 7

nerve supply of proximal tibia-fibula jt

Answer 7

common peroneal nerve

Question 8

movements of prox tibia-fibula jt

Answer 8

small amount of gliding movement takes place during movements at ankle jt

Question 9

stability of knee joint depends on

Answer 9

strength and actions of surrounding muscles

ligaments that connect the femur and tibia

Question 10

2 groups of knee ligaments

Answer 10

extracapsular and intracapsular

Question 11

extracapsular ligament, distal part of the quadriceps tendon

Answer 11

patellar ligament

Question 12

extracapsular ligament, from femur to fibula

Answer 12

lateral collateral ligament or fibular collateral ligament

Question 13

extracapsular ligament, from femur to tibia

Answer 13

medial collateral ligament or tibial collateral ligament

Question 14

rounded, cordlike strong ligament

prevents excessive adductiom

Answer 14

lateral collateral ligament or fibular collateral ligament

Question 15

strong flat band that extends from medial condyle to medial of tibia

deep part attached to medial meniscus

prevents excessive abduction of knee

Answer 15

medial collateral ligament or tibial collateral ligament

Question 16

expansion of semimembranosus muscle that strengthens the fibrous capsule posteriorly

Answer 16

oblique popliteal ligament

Question 17

intracapsular ligaments

Answer 17

cruciate ligament (anterior, posterior)
menisci ligament (medial, lateral)

Question 18

located at center of the joint, provides stability to the knee joint

named according to tibial attachment

main bond between tibia and femur through out the joint’s motion

Answer 18

cruciate ligament

Question 19

cruciate ligament that attaches anterior of tibia to posterior of femur

weaker, poor blood supply

slack when flexed, taut when extended

Answer 19

anterior cruciate ligament

Question 20

anterior cruciate ligament prevents

Answer 20

posterior displacement of femur or anterior displacement of tibia over femur

hyperextension of knee

Question 21

acl provides

Answer 21

rational (tortional) stability

Question 22

posterior tibia to anterior femur

stronger cruciate ligament

tight when knee is flexed

Answer 22

posterior cruciate ligament

Question 23

pcl prevents

Answer 23

anterior displacement of femur on tibia or posterior displacement of tibia on femur

hyperflexion of knee

Question 24

pcl function

Answer 24

during weight bearing of flexed knee, pcl is the minimum stabilizer of the femur

Question 25

circular and smaller meniscus, more freely movable

Answer 25

lateral meniscus ligament

Question 26

c shape, broader firmly attached to the deep surface if tibial collateral ligameng

Answer 26

medial meniscus ligament

Question 27

anterior attachment of medial meniscus ligament

Answer 27

anterior intercondylar area od gibia, anterior to attachment of acl

Question 28

posterior attachment of medial meniscus ligament

Answer 28

posterior condylar area

Question 29

meniscus ligament that is easily injured bc of its attachments

Answer 29

medial meniscus ligaments

Question 30

knee flexor,limited by contact if thigh and calf

Answer 30

hamstrings

Question 31

knee extensor, limited by cruciate and collateral ligaments

Answer 31

quadriceps

Question 32

when knee is flexed

Answer 32

rotation occurs

Question 33

medial rotators, check by cruciate ligaments

Answer 33

popliteus, semitendinosus, semimembranosus

Question 34

lateral rotators, checked by collateral ligament

Answer 34

biceps femoris