Knee Anatomy Flashcards Preview

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Flashcards in Knee Anatomy Deck (34):
1

what makes up the knee joint?

tibiofemoral joint
patellofemoral joint

2

which condyle is longer?

medial condyle

3

which condyle of the tibia is larger?

medial

4

what are the horns?

open ends of menisci

5

what ligament attaches the anterior portions of each horn?

transverese

6

what do the coronary ligaments do?

attaches menisci to tibial plateau

7

which meniscus has more mobility therefore is less injured?

lateral meniscus

8

which muscle does the lateral meniscus attach to?

popliteus muscle and PCL

9

which muscle does the medial meniscus attach to?

semimembranosus and MCL

10

when do menisci reach adult status?

age 10 yo

11

what is the tibiofemoral angle?

valgus

12

how does genu valgus influence the knee?

inc lateral condyle compression
inc tension on medial condyle

13

how does genu varus influence the knee?

inc medial condyle compression
inc tension on lateral condyle

14

what is the role of menisci?

absorb 60% of compression forces
add congruency

15

which two ligaments help reinforce the CT capsule?

oblique popliteal L
arcuate popliteal L

16

what is the O/I of ACL?

anterior aspect of tibia to lateral femoral condyle

17

what is the O/I of PCL?

posterior tibia to medial femoral condyle

18

what are the main bursa of the knee?

suprapatellar
subpopliteal
gastrocnemius
prepatellar
infrapatellar
ancerine

19

when is the bursa under the least amount of stress?

semiflexed position (makes it preferred position when bursa are inflamed)

20

what is genu recurvatum?

hyperextension at the knee

21

which muscle participates in unlocking of the knee?

popliteus

22

what are the functions of sartorius?

knee flexion
external rotation

23

what are the functions of gracilis?

hip adduction
knee flexor

24

what are the functions of gastrocnemius?

plantar flexion
knee flexion
prevents knee hyperextension

25

what are the O/I of hamstrings?

O: ischial tuberosity
I: biceps femoris-lateral condyle of tibia
semitendinous and membranosus-medial condyle of tibia

26

what are functions of hamstrings?

knee flexion
hip extension

27

what are the O/I of gastroc?

O; post medial and lateral condyles of femur
I: calcaneus

28

what is the pes anserinus?

common tendon of sartorius, gracilis, semitendinosus
"goose's neck"

29

what is the O/I of popliteus?

O: post. lateral condyle of femur
I: posterior tibia
fan shaped

30

what is the role of popliteus?

stabilize and unlock the knee

31

what are the knee extensors?

rectus femoris
v. lateralis
v. medialis
v. intermedius

32

what is the Q angle?

line from tibial tuberosity to middle of patella
line from middle of patella to ASIS
should be 15 degrees

33

which quad fibers run more obliquely?

VMO (lower fibers)

34

which is an important muscle in stabalizing the patella?

VMO

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