Table 1.
Sacroiliac joint (SIJ) ligaments, locations, and functions.10
|
Ligament |
Location |
Primary Restraint |
| Posterior ligaments (5) | Posterior superior iliac spine to sacral tubercles | Sacral extension |
| Long ligament | ||
| Short ligament | ||
| Sacrotuberous (4) | Posterior superior iliac spine and sacrum to ischial tuberosity | Sacral flexion |
| Sacrospinous (3) | Apex of the sacrum to ischial spine | Sacral flexion |
| Anterior ligament (6) | Crosses ventral and caudal aspect of SIJ | Sacral flexion, axial rotation |
| Interosseous (8) | Between sacrum and ilium dorsal to SIJ | Sacral flexion, axial rotation |
| Iliolumbar (1 and 2) | Transverse process of L5 to the iliac tuberosity and crest | Lateral side bending |
| Ventral band | Ventral band | |
| Dorsal band | Forward flexion | |
| Sacroiliac part | Dorsal band |