Hip Joint

Question 1

Hip acetabulum is made up of which 3 bones?

Answer 1

Ileum
ischiium
pubic

Question 2

Which part of the acetabulum surface is for weight bearing?

Answer 2

Lunate surface

Question 3

What part of acetabulum is non articular?

Answer 3

notch and fossa (fat pad)

Question 4

What kind of epiphyses are traction on the head of femur? what causes traction?

Answer 4

greater
lesser trochanter
traction of gluteal muscles

Question 5

What kind of epiphyses is neck of femur?

Answer 5

pressure epiphyses

Question 6

Femoral head/neck directed normally which directions?

Answer 6

upwards
medially
anteriorly

Question 7

Femoral anteversion is how many degrees?

Answer 7

8-12

Question 8

anterior femoral head is outside acetabulum protected by?

Answer 8

psoas bursa

Question 9

Why is neck of femur narrower than head?

Answer 9

increased ROM

Question 10

What attaches to fovea of femur?

Answer 10

ligament of head of femur

Question 11

what does ligament of head of femur do?

Answer 11

no supporting role

directs branch of obturator artery to femoral head

Question 12

Labrum of hip is torn how?

Answer 12

hip dislocation

Question 13

Describe the 2 trabecular systems of head of femur?

Answer 13

1. Superior: vertical/arcuate

2. Inferior: medial lateral

Question 14

hip closed pack position is?

Answer 14

extension
abduction
medial rotation

Question 15

closed pack position is defined as?

Answer 15

most articular surface meeting

ligaments taut

Question 16

Iliofemoral ligament is what shape? does what?

Answer 16

strong ‘Y’ shaped

resists extension

Question 17

2 posterior ligaments of hip joint?

Answer 17

pubofemoral
ischiofemoral
weaker than iliofemoral

Question 18

what is zona orbicularis?

Answer 18

ring of fibres lining hip capsule

Question 19

What are retinacular fibres of hip?

Answer 19

reflections of fibrous tissue from capsule to femoral neck

Question 20

what’s so important about retinacular fibres of hip?

Answer 20

retinacular vessels: critical blod supply to head of femur

Question 21

what is the ‘screw home’ mechanism in hip?

Answer 21

extension of hip makes the joint into medial rotation

Question 22

How is the hip rotated in stance vs. swing?

Answer 22

stance: medial rotation

swing/push-off: lateral rotation

Question 23

glut muscles used for?

Answer 23

power bursts
sit-stand
extra extension

Question 24

anterior hip muscles include?

Answer 24

iliopsoas

Question 25

2 functions of posterior hip joint muscles?

Answer 25

1. dynamic: ER in swing | 2. Support: parallel tendons

Question 26

Glut medius injury results in:

Answer 26

trendellenberg gait

Question 27

what is osteitis pubis? which muscle commonly?

Answer 27

groin injury: adductor longus

Question 28

how get medial referred hip pain?

Answer 28

obturator nerve

Question 29

referred pain to the hip how?

Answer 29

lumbar spine/SIJ

Question 30

Hip joint innervated by which 2 nerves?

Answer 30

femoral | obturator branches

Question 31

2 Arteries that supply head of femur? where from?

Answer 31

medial(primary) and lateral femoral circumflex from the profunda femoris

Question 32

what is endangered in posterior hip dislocation:

Answer 32

sciatic nerve

Question 33

angle of femoral neck shaft normal?

Answer 33

135 degrees

Question 34

What is coxa vara vs. coxa valga?

Answer 34

1. Coxa vara: 125 degrees

Question 35

what happens to leg with femoral neck fracture?

Answer 35

ER | shortened due to pull of the gluts

Question 36

congenital hip dislocation need what to fix?

Answer 36

brace that places hip in ER

Question 37

femoral neck fracture endangers what?

Answer 37

blood supply for the circumflex arteries