Distractors
Anterior sacroiliac ligament
Sacrotuberous ligament
Iliolumbar ligament
Key
Posterior sacroiliac ligament
Question
There are several ligaments that contribute to the sacroiliac joint’s stability, according to Erik Dalton, author of “Mastering the Sacroiliac Puzzle.” Which of those ligaments restricts anterior rotation of the sacrum and supports the joint against vertical shear forces?