Sacroiliac Joints

Question 1

Ilium does not cavitate like other weight bearing joints such as the hip and this suggests non-weight bearing function

Answer 1

Yusef et al., (2013)

Question 2

Post-auricular region grows much more rapidly and earlier than the auricular region - attributed to stresses and strains on it during bipedalism and rapid ligamentous growth due to this strain

Answer 2

Yusef et al., (2013)

Question 3

SIJs link and support the axial skeleton and do bear weight, act as shock absorbers also
Amount of shock absorption depends on amount of motion available at SIJ

Answer 3

Butt et al., (2015)

Question 4

Description of the ligaments

Answer 4

Butt et al., (2015)

Question 5

During flexion the cranial limb glides anteroinferiorly and the caudal limb glides superiorly, largest ligamentous stress during flexion was experienced by the interosseous ligament

Answer 5

Eichenseer et al., (2011)

Question 6

Ligaments can be a source of pain if strained

Answer 6

Eichenseer et al., (2011)

Question 7

SIJ is a source of pain in lower back and buttocks in approx 15% of the population but is difficult to diagnose
Rarely present with pain above L5 and localise it to the PSIS

Answer 7

Eichenseer et al., (2011)

Question 8

Movements of the SIJ
Move through origin point halfway between the PSISs
Movements so minute suggest clinical palpation for diagnosis of SIJ issues probably not useful

Answer 8

Goode et al., (2008)

Question 9

Cresent fractures of the SIJ are a type of lateral compression injury associated with instability
Classification on where fracture is
Usually fixed through open repair internal fixation

Answer 9

Shui et al., (2015)

Question 10

Young-Burgess classification of pelvic fractures

Lateral compression most common accounting for over 50%

Answer 10

Shui et al., (2015)

Question 11

Closed reduction of crescent fracture showed no sig diff in reduction quality and significantly better outcomes for infection rates, duration of stay, functioning and bloodloss

Answer 11

Shui et al., (2015)

Question 12

SIJs essential for load transfer between the spine and legs

Answer 12

Vleeming et al., (2012)

Question 13

Sacral cartilage hyaline and 2-3X thicker than iliac
Iliac cartilage represents a special form of hyaline cartilage as although may appear as fibrocartilage is histologically not

Answer 13

Vleeming et al., (2012)

Question 14

Pelvis is a ring, the stability of which depends on the integrity of the weight bearing sacroiliac joint

Answer 14

Tile, (1988)