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