hip joint Flashcards Preview

Z MD1 Hip and leg anatomy > hip joint > Flashcards

Flashcards in hip joint Deck (27):
1

what is the acetabulum

the hip socket

2

what are the 3 bones that make up the acetabulum

ileum ischium pubis

3

which parts of the acetabulum is non-articular

the fossa and the acetabular notch

4

which part of the acetabulum bears the most weight

the roof of the lunate

5

what connects the greater and lesser trochanter of the fumer

intertrochanteric line (ant) intertrochanteric crest (post)

6

what is the fovea of the head of the femur

that part of the femur that is not articular - ligament attaches here

7

what is the difference between the hip and shoulder joint

the head of the femur is a lot bigger than the shoulder

8

where are the pressure and traction epiphyses' of the femur

pressure epiphyses - the the end of the head of the femur traction epiphyses - base of the greater trochanter

9

which direction is the femoral head directed

upwards, medially and forwards

10

which part of the femur head lies outside of the acetebulum

the most anterior part (covered by a bursa)

11

what is the advantage of having a smaller neck compared to the head (for hip joint)

allows greater ROM without contacting the rim of the acetablum

12

what is the function of the psoas bursa

protects the psoas major muscle tendon as it passes down to the lesser trochanter

13

which is the role of the ligament that joins to the fovea of the head of the femur

directs branch of obturator artery to femoral head (has no supporting role

14

what are the 2 trabecular systems of the head of the femur

superior (vertical and arcuate) inferior (medial and lateral)

15

how are the superior and inferior trabecular systems made

- superior - due to compression through the head and neck - inferior - in response to muscle pulls on greater and lesser trochanter

16

what is the position of greatest stability of the hip

extension, abduction and medial rotation

17

what is position of least stability of the hip

flexion, abduction and laterally rotated

18

where is the centre of gravity for the hip

passes behind the centre of joint

19

what are the 3 ligaments that stabilize the hip joint

- iliofemoral ligament (in front - strong) - pubofemoral and ischiofemoral ligaments (behind - weak)

20

attachments of the iliofemoral ligament

iliac crest to femur

21

attachments of the pubofemoral ligament and the ischiofemoral ligament

blends with the capsule (no direct attachment to the femur)

22

what are the fibres called that line the hip joint internally

zona orbicularis

23

what is the function of the retinacular fibres

take critical blood vessels to the head of the femur

24

what causes a Trendellenberg gait

gluteus medius unable to contract to prevent pelvic tilt with walking

25

which nerve would carry referred pain FROM the hip? and where would it go

obturator nerve - down the medial aspect of the leg to the medial knee

26

what is the main blood supply to the head of the femur

branches of medial and lateral femoral circumflex arteries

27

what nerve is endangered in a posterior dislocation of the hip

sciatic nerve