Tibiofemoral Joint

Question 1

tibiofemoral joint is the articulation between _ and _

Answer 1

femoral condyles and tibial plateau

Question 2

tibiofemoral joint receives support from (4)

Answer 2

1. menisci
2. cruciate ligaments
3. joint capsule
4. collateral ligaments

Question 3

what are the 4 postural alignments found at the tibiofemoral joint?

Answer 3

1. normal
2. bowl-legged
3. knock-kneed
4. genu recurvatum

Question 4

bowl-legged aka

Answer 4

genu varum

Question 5

knock-kneed aka

Answer 5

genu valgum

Question 6

what type of joint is the tibiofemoral joint?

Answer 6

condyloid or modified hinge (false hinge)

Question 7

main motion found at tibiofemoral joint? plane? axis?

Answer 7

flexion and extension
sagittal plane
M/L axis

Question 8

what other movements are found at the tibiofemoral joint? plane? axis?

Answer 8

IR and ER
transverse plane,
vertical axis

Question 9

flex/ext moves b/w which landmarks? shape of these landmarks?

Answer 9

convex femoral condyles and

concave tibial plateau

Question 10

the axis of flex/ext moves about

Answer 10

femoral condyles

Question 11

screw home mechanism: what needs to occur to achieve terminal knee extension?

Answer 11

terminal ER of tibia

Question 12

screw home mechanism: what needs to occur to initiate flexion?

which muscle helps?

Answer 12

tibia must first internally rotate to “unscrew” tibiofemoral joint;

popliteus muscle

Question 13

ligamentous capsule that surrounds tibiofemoral joint has _ membrane and _ fluid

Answer 13

synovial membrane,

synovial fluid

Question 14

distinct thickenings of the tibiofemoral joint capsule

Answer 14

medial collateral ligament,

arcuate complex