hip bone osteo

Question 1

What are the 3 parts of the hip bone?

Answer 1

1. Ilium (superior) 2. Ischium (posteroinferior) 3. Pubis (anteroinferior).

Question 2

What landmark separates the ilium into body and ala?

Answer 2

Arcuate line (on medial surface).

Question 3

What is the name of the socket for the femoral head?

Answer 3

Acetabulum (formed by ilium, ischium, and pubis).

Question 4

What is the largest foramen in the hip bone?

Answer 4

Obturator foramen (closed by obturator membrane).

Question 5

What is the rough area where the hip bones articulate anteriorly?

Answer 5

Pubic symphysis (fibrocartilage joint).

Question 6

What is the ischial tuberosity?

Answer 6

Bony prominence you sit on; attachment for hamstrings and sacrotuberous ligament.

Question 7

What is the ASIS?

Answer 7

Anterior Superior Iliac Spine (attachment for sartorius and inguinal ligament).

Question 8

What is the AIIS?

Answer 8

Anterior Inferior Iliac Spine (attachment for rectus femoris).

Question 9

What is the PSIS?

Answer 9

Posterior Superior Iliac Spine (dimples of Venus landmark).

Question 10

What is the greater sciatic notch?

Answer 10

Passage for sciatic nerve (wider in females).

Question 11

What is the difference in subpubic angle between sexes?

Answer 11

Female: 80-85° (wider). Male: 50-60° (narrower).

Question 12

How does the pelvic inlet shape differ?

Answer 12

Female: Oval/rounded (obstetric needs). Male: Heart-shaped/narrower.

Question 13

How does the sacrum differ between sexes?

Answer 13

Female: Shorter, wider, less curved. Male: Longer, narrower, more curved.

Question 14

How does the acetabulum differ between sexes?

Answer 14

Female: Smaller, faces more anteriorly. Male: Larger, faces laterally.

Question 15

How does the ischial tuberosity differ?

Answer 15

Female: Everted (farther apart). Male: Inverted (closer together).

Question 16

What is the pelvic outlet difference?

Answer 16

Female: Wider (for childbirth). Male: Narrower.

Question 17

How does the iliac crest differ?

Answer 17

Female: Less curved, flaring. Male: More curved, higher.

Question 18

What is the obstetric conjugate?

Answer 18

Female pelvis: Narrowest AP diameter of pelvic inlet (critical for childbirth).

Question 19

How does the pubic arch differ?

Answer 19

Female: >90° (rounded). Male: <90° (angular).

Question 20

What is the preauricular sulcus?

Answer 20

Female: Groove near sacroiliac joint (ligament attachment, absent/male).

Question 21

Which muscles originate from the iliac crest?

Answer 21

1. Tensor fasciae latae (anterior 1/3) 2. Internal oblique (anterior 2/3) 3. Transversus abdominis (anterior 2/3) 4. Latissimus dorsi (posterior 1/3 via thoracolumbar fascia) 5. Gluteus maximus (posterior 1/3)

Question 22

Which muscles attach to the ischial tuberosity?

Answer 22

1. Hamstrings: - Biceps femoris (long head) - Semitendinosus - Semimembranosus 2. Adductor magnus (hamstring part) 3. Sacrotuberous ligament

Question 23

What muscles attach to the gluteal surface (lines) of the ilium?

Answer 23

1. Inferior gluteal line: Gluteus minimus (below line) 2. Anterior gluteal line: Gluteus medius (anterior to line) 3. Posterior gluteal line: Gluteus maximus (posterior to line)

Question 24

Which muscle attaches to the ASIS (Anterior Superior Iliac Spine)?

Answer 24

1. Sartorius 2. Inguinal ligament (also attaches to pubic tubercle)

Question 25

Which muscle attaches to the **AIIS** (Anterior Inferior Iliac Spine)?

Answer 25

1. Rectus femoris (straight head) 2. Iliofemoral ligament (Y-ligament of Bigelow)

Question 26

What attaches to the **PSIS** (Posterior Superior Iliac Spine)?

Answer 26

1. Sacroiliac ligaments 2. Latissimus dorsi (via thoracolumbar fascia)

Question 27

Which muscle attaches to the **iliac tuberosity**?

Answer 27

1. Iliacus (fills the iliac fossa) 2. Sacroiliac ligaments

Question 28

What attaches to the **pubic crest**?

Answer 28

1. Rectus abdominis 2. Pyramidalis (if present) 3. Pectineus (lateral part)

Question 29

What attaches to the **ischial ramus**?

Answer 29

1. Adductor magnus 2. Gracilis 3. Obturator externus

Question 30

What attaches to the **greater sciatic notch**?

Answer 30

1. Piriformis (passes through notch to attach to femur) 2. Sacrospinous ligament (converts notch into foramen)