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SI Joint Ligaments
| Question | Answer |
|---|---|
| Interosseous SI ligament | located between tuberosities of sacrum and ilium |
| Sacrospinous ligmaent attachments | lateral margins of sacrum and coccyx to ischial spine |
| Sacrospinous ligament checks: | nutation |
| Sacrotuberous ligament attachments | pelvic surface of sacrum to ischial tuberosity |
| Sacrotuberous ligament restricts: | restricts sacral nutation |
| Posterior SI ligament attachments | PSIS to sacrum |
| Posterior SI ligament checks | counternutation |
| Iliolumbar ligament attachments | L5 transverse process to iliac crests and interosseous ligament |
| Iliolumbar ligament resists: | resists lateral flexion (sidebending) and translation of sacrum |
| Anterior SI ligament attachments | Anterior thickening of SI joint capsule |
| Anterior SI ligament resists: | resists vertical translation and joint distraction |