Gluteal Region: bony landmarks & ligaments

Question 1

4 bony landmarks of gluteal region

Answer 1

1. iliac crest
2. ASIS - anterior superior iliac spine
3. PSIS - posterior superior iliac spine
4. ischial tuberosity
5. greater trochanter of femur

Question 2

Which is NOT a characteristic of the sacroiliac joint?

a. articulation at auricular surface of sacrum & auricular surface of ilium
b. synovial joint
c. movement is maximal at this joint
d. joint is very stable due to interlocking of irregular elevations and depressions of the articulating surfaces and very strong supporting ligament

Answer 2

c. movement is maximal*

* In fact, movement is MINIMAL and limited to slight gliding and rotation

Question 3

Name the sacroiliac joint ligament described:

broad & thick; from posterior surface of sacrum to posterior ilium (iliac tuberosity)

Answer 3

posterior sacroiliac ligament

Question 4

Name the sacroiliac joint ligament described:

thin, from anterior sacrum to ilium (ledial aspect of iliac fossa)

Answer 4

anterior sacroiliac ligament

Question 5

Name the sacroiliac joint ligament described:

from lateral aspect of sacrum, PSIS of ilium and coccyx to ischial tuberosity

Answer 5

sacrotuberous ligament

Question 6

Name the sacroiliac joint ligament described:

from lateral aspect of sacrum to ischial spine; together with the sacrotuberous ligament, converts the sciatic foramen to a greater sciatic foramen and lesser sciatic foramen

Answer 6

sacrospinous ligament

Question 7

What 2 ligaments convert the sciatic foramen to a greater sciatic foramen and lesser sciatic foramen

Answer 7

sacrotuberous ligament

sacrospinous ligament