pelvis & hip

Question 0

origin of rectus femoris (direct head) and iliofemoral ligament?

Answer 0

AIIS (antero-inferior iliac spine)

Question 1

origin of sartorius, transverse/internal abdominal muscles?

Answer 1

ASIS

Question 2

ANTEversion and orientation of acetabulum?

Answer 2

15degrees anteverted, 45degrees caudally oriented

Question 3

average ANTEversion of femoral neck (in relation to femoral condyles)?

Answer 3

14degrees (or 1-40degrees) anteverted

Question 4

hip joint CAPSULE coverage?

Answer 4

extends ANTERIORLY across femoral neck to trochanteric CREST, POSTERIORLY only partially across NECK

Question 5

average femoral neck-shaft angle?

Answer 5

127degrees (*141degrees in fetus)

Question 6

number of ANTERIOR LIGAMENTS in hip joint?

Answer 6

3

Question 7

STRONGEST (anterior hip joint) ligament in the body?

Answer 7

ILIOfemoral ligament (Y ligament of Bigelow)

Question 8

2 other anterior hip ligaments?

Answer 8

ISCHIOfemoral, PUBOfemoral

Question 9

age-dependent blood supply to femoral head?

Answer 9

0-4YRS: deep femoral - medial, lateral cx arteries
4-ADULT: medfem cx - postsup, postinf retinacular arteries
ADULT: med cx - lateral epiphyseal artery

Question 10

why antegrade femoral nailing undesirable for pedia?

Answer 10

possible damage to posterosuperior retinacular vessels (4yrs-adult)

Question 11

why posterior acetabular approach undesirable for adult?

Answer 11

might transect quadratus femoris, damage medial circumflex

Question 12

separates greater and lesser sciatic foramina?

Answer 12

SACROSPINOUS ligament

Question 13

importance of greater sciatic foramen?

Answer 13

piriformis, sciatic nerve

Question 14

importance of lesser sciatic foramen?

Answer 14

short external rotators (sup/inf gemelli, obturator internus)

Question 15

most common nerve injured in total hip replacement?

Answer 15

sciatic nerve (PERONEAL division - “postaxial” - innervates biceps femoris)

Question 16

MAJOR LANDMARK for hip structures?

Answer 16

PIRIFORMIS muscle: superior gluteal nerve/artery exits above, all else below

Question 17

2 nerves that exit greater sciatic foramen, enter lesser foramen?

Answer 17

pudendal, nerve to obturator internus

Question 18

borders of femoral triangle?

Answer 18

sartorius, pectineus, inguinal ligament

Question 19

structures in femoral triangle (lateral to medial)?

Answer 19

“NAVaL”: femoral Nerve, Artery, Vein, and Lymphatics

Question 20

level aorta branches off into common iliac arteries?

Answer 20

L4

Question 21

level common iliac artery divides into internal, external iliac?

Answer 21

S1

Question 22

femoral artery branches off from?

Answer 22

aorta - common iliac - external iliac - femoral artery

Question 23

branches of (common) femoral artery?

Answer 23

superficial femoral, deep femoral, medial circumflex

Question 25

major blood supply to femoral head?

Answer 25

medial femoral circumflex (from femoral artery), lateral epiphyseal

Question 27

other name for adductor canal?

Answer 27

Hunter’s canal

Question 28

safe zones for placement of acetabular screws?

Answer 28

postero-superior, postero-inferior

Question 29

important areas of femoral ossification?

Answer 29

head, distal femur

Question 30

important blood supply of femoral head from 0-4years?

Answer 30

ligamentum teres (from obturator artery)

Question 31

important areas of femoral ossification?

Answer 31

head, distal femur

Question 32

important blood supply of femoral head from 0-4years?

Answer 32

ligamentum teres (from obturator artery)