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Flashcards in Joints of Lower Limb Deck (28):
1

what type of joint is the hip joint?

ball-and-socket synovial

2

what are the articulating surfaces of the hip joint?

head of femur and acetabulum of pelvis

3

name the intracapuslar ligament of the hip joint?

ligament to the head of the femur

4

how many extracapsular ligaments does the hip joint have?

3

5

name the 3 extracapsular ligaments of the hip joint?

iliofemoral, puboremoral and ischiofemoral

6

what is the function of the iliofemoral ligament?

prevents hyperextension

7

where is the iliofemoral ligament located?

anteriorly

8

where is the pubofemoral ligament located?

anterior and inferiorly

9

what is the function of the pubofemoral ligament?

prevents excessive abduction and extension

10

which ligament of the hip joint is located posteriorly?

ischiofemoral

11

what is the function of the ischiofemoral ligament?

prevents extension of femur at hip

12

what are the stabilising factors of the hip joint?

acetabulum - deep, encompasses almost whole head of femur
acetabular labrum - fibrocartilaginous collar, deepends articulation
ligaments - very strong, spiral arrangement

13

what type of joint is the knee joint?

hinge type synovial

14

what are the articulating surfaces of the knee joint?

tibiofemoral articulation - medial/lateral condyles of femur articulating with tibia
patellofemoral articulation - anterior and distal part of femur artoculating with patella

15

what is the function of the patellofemoral articulation?

allows quadriceps femoris tendon to be inserted directly over knee, increasing efficiency of muscle as an extensor

16

which articulation at the knee is weightbearing, tibiofemoral or patellofemoral?

tibiofemoral

17

which meniscus is attached to a collateral ligament?

medial, attached to MCL and so may be damaged if MCL is ruptured

18

what are the functions of the menisci?

deepen articular surfaces to increase stability
act as shock absorbers

19

name the 5 ligaments of the knee

patellar
medial and lateral collaterals
anterior and posterior cruciates

20

what is the function of the ACL?

prevents anterior dislocation of knee

21

what is the function of the PCL?

prevents posterior dislocation of knee

22

what type of joint is the ankle joint?

hinge type synovial

23

what are the articulating surfaces of the ankle joint?

tibia and fibula and talus

24

what type of joint is the distal tibiofibular joint?

fibrous

25

what causes the increase in stability at the ankle joint when foot is dorsiflexed?

talus is wedge-shaped, wider at distal end, and so the articulating portion increases in width as dorsiflexion increasing, increasing stability

26

where are the two sets of ankle joint ligaments from?

one from each malleolus

27

what is the function of the medial ankle ligaments?

resist over-eversion of foot

28

what is the function of the lateral ankle ligaments?

resist over-inversion of foot