Sacroiliac joint Flashcards
What is the auricular surface of the ilium composed of?
articular cartilage, interspersed with fibrocartilage
What is the superficial appearance of the auricular surfaces of the sacro-iliac joint by age 15?
the sacrum develops as a sacral groove while the ilium develops an iliac ridge
Which gender is biased with greater unevenness of the auricular surface of the sacro-iliac joint?
males
What forms the accessory sacro-iliac joint?
the sacral tuberosity and the iliac sulcus
What pathological or age-related modifications of the sacro-iliac joint may occur?
degenerative arthrosis and ankylosis
What does degenerative arthrosis mean?
a condition of degeneration of the joint, sometimes referred to as degenerative joint disease (DJD)
*What does ankylosis mean?
a condition of fibrous adhesion occurs within the joint
What is the age and surface bias associated with degenerative arthrosis of the sacro-iliac joint?
age 40, the iliac auricular surface
What is the age and gender bias associated with ankylosis of the sacro-iliac joint?
age 50 and male bias particularly in African American males
What movements at the sacro-iliac joint are describer as forward nodding and backward nodding?
nutation and counternutation, respectively
What is the age and gender bias associated with ossification of the anterior sacro-iliac ligament?
age 40 and male bias
Which is the strongest of the sacro-iliac ligaments?
the interosseous sacro-iliac ligament
What are the attachment sites of the interosseous sacroiliac ligament?
at the sacral tuberosity and the iliac sulcus
What is the relationship between the capsular and interosseous sacroiliac ligaments?
the interosseous sacro-iliac ligament replaces the capsular ligament posteriorly
What passes between the layers of the interosseous sacro-iliac ligament?
dorsal rami from the sacral spinal nerves
