Hip Anatomy

Question 1

Normal angle btwn verticle of femur & center of femoral head

Answer 1

125-135

Question 2

Coxa Vara is a ____ (larger/smaller) angle

Answer 2

smaller

Question 3

Center Edge Angle

Answer 3

Verticle line from center of fem head and line to edge of labrum.
Normal = 22-42

Question 4

Larger center edge angle is seen in _____

Answer 4

OA

Question 5

Antetorsion angle

Answer 5

> 15

Question 6

Retrotorsion angle

Answer 6

<8

Question 7

Roles of labrum

Answer 7

shock absorption
pressure distribution
lubrication
semi-stabilizer

Question 8

Vascularization of labrum

Answer 8

No intrinsic blood supply (similar knee meniscus, better supply to outer edges).
Less blood supply to superior region = most commonly torn.

Question 9

Iliofemoral ligament function

Answer 9

Resists ER, Ext, Hyperext.
Locks/stabilizes joint in extension.

Question 10

Ischiofemoral ligament function

Answer 10

Resists IR, Adduction (in flex).
Stability to posterior capsule - kinda, mostly muscles do this though.

Question 11

Pubofemoral ligament function

Answer 11

Resists IR, ABDuction, Ext.
Only main restraint on inferior side.

Question 12

Ligamentum Teres function

Answer 12

Carries Obturator Artery
Doesn’t help out much with stability

Question 13

Transverse ligament function

Answer 13

Completes circle with labrum

Question 14

What arteries supply the femoral head?

Answer 14

Obturator
Femoral

Question 15

What nerves invx the femoral head?

Answer 15

Obturator
Femoral
Superior Gluteal
Sciatic

Question 16

Open Pack position

Answer 16

30° Flexion
30° ABDuction
Slight ER

Question 17

Closed Pack position

Answer 17

Extension
ABDuction
IR

Question 18

Greatest bony congruency position

Answer 18

Flexion
ABDuction
ER or IR

Question 19

Capsular pattern

Answer 19

1. Flexion
2. ABDuction
3. IR

Question 20

OA Capsular pattern

Answer 20

1. IR
2. Flexion
3. ABDuction
4. Extension

Question 21

Things that stabiliize

Answer 21

Acetabulum
Capsule
Labrum
Muscles
Ligaments
Bony congruency during WB

Question 22

Things that mobilize

Answer 22

Large SA.
More motion in ABDuction d/t capsular redundancy inferiorly.

Question 23

Force thru hip in standing

Answer 23

0.3x BW

Question 24

Force thru hip in SL stance

Answer 24

2.4-2.6x BW

Question 25

Force thru hip during gait

Answer 25

1.3-5.8x BW

Question 26

Force thru hip during stairs

Answer 26

3x BW

Question 27

Force thru hip during running

Answer 27

4.5x BW

Question 28

Use of cane unweights hip by ___%

Answer 28

40%

Question 29

Hip pain can refer to ____ (Femoral N distribution)

Answer 29

Anterior thigh

Question 30

Hip pain can refer to ____ (Sciatic N distribution)

Answer 30

Gluteal region
Posterior/lateral thigh

Question 31

Systemic pathologies that may cause hip pain

Answer 31

Cancer
PAD
Urologic/renal
Osteoporosis
Inflammatory disease
Hemophelia
Sickle Cell