lec 8 hip joint

Question 1

hip joint involves articulation between what

Answer 1

acetabulum of os coxae and head of femur

Question 2

what type is hip joint

Answer 2

synovial-ball and socket “sphenoid”

Question 3

motions of hip joint

Answer 3

multiaxial

Question 4

What motion pair rotates around an A-P axis?

Answer 4

abduction adduction

Question 5

What motion pair rotates around a medial-lateral axis?

Answer 5

flexion extension

Question 6

What motion pair rotates around a longitudinal axis? (Vertical)

Answer 6

medial lateral rotation

Question 7

In what planes can the hip joint rotate?

Answer 7

coronal
sagittal
transverse

Question 8

Where in the hipjoint is the hyaline cartilage the thickest?

Answer 8

Anterosuperiorly where weight transfer is the greatest

Question 9

what part of hip joint not covered in hyaline cartilage

Answer 9

fovea

Question 10

What are the 3 special intracapsular structures of the hip joint?

Answer 10

1. Transverse acetabular ligament
2. Ligament of the head of the femur
3. Acetabular labrum

Question 11

What runs within the ligament of the head of the femur?

Answer 11

An artery that is a branch of the obturator artery

Question 12

proximal attachment of hip bone

Answer 12

Rim of acetabulum, external surface of labrum, TAL

Question 13

distal attachment of femur

Answer 13

Anteriorly - greater trochanter, interotrochanteric line, tubercle of femur, femoral neck
Posteriorly - covers the femoral neck

Question 14

Retinacula of the hip joint capsule

Answer 14

deep fibers of the capsule that are reflected onto the femoral neck (along with reflection of synovium) and transmit blood vessels (from medial & lateral circumflex femoral arteries) to head & neck of femur

Question 15

what happens when you fracture neck of femur

Answer 15

interrupt blood supply

Question 16

What is the most important blood supply of the femoral neck?

Answer 16

medial circumflex

Question 17

What are the 3 capsular ligaments of the hip joint?

Answer 17

iliofemoral
ischiofemoral
pubofemoral

Question 18

Where does the iliofemoral ligament run?

Answer 18

From - iliac part of acetabular rim And AIIS to greater trochanter, intertrochanteric line & femoral tubercle

Question 19

Where does the ischiofemoral ligament run?

Answer 19

From - ischial part of acetabular rim to superomedial aspect of greater trochanter

Question 20

Where does the pubofemoral ligament run?

Answer 20

From pubic portion of acetabular rim, obturator crest, iliopubic eminence, and obturator membrane
To - femur anterior to lesser trochanter, neck & iliofemoral ligament

Question 21

Which of the hip joint ligament is the strongest?

Answer 21

iliofemoral

Question 22

When are the capsular ligaments slack and when are they tense?

Answer 22

slack in flexion and tense in extension

Question 23

when is hip joint most stbale

Answer 23

extension

Question 24

iliofemoral ligament resists

Answer 24

extension, lateral rotation, adduction

Question 25

ischiofemoral ligament resits

Answer 25

extension, lateral rotation, adduction

Question 26

pubofemoral ligament resists

Answer 26

excessive extension and abduction

Question 27

What is the most important blood supply to the hip?

Answer 27

medial circumflex femoral artery

Question 28

What are the two branches of the femoral artery that supply the hip?

Answer 28

The medial and lateral circumflex femoral arteries

Question 29

what is another source of blood to head and neck of femur

Answer 29

acetabular branch of obturator artery

Question 30

What is the innervation to the hip joint capsule and ligaments?

Answer 30

femoral, obturator, nerve to quadratus femoris, sup glut nerves

Question 31

What is the most likely position to dislocate the hip?

Answer 31

When the hip is flexed, adducted, and medially rotated (as in sitting in a car)

Question 32

hip fractures are generally where

Answer 32

femoral neck