Type Anterior Posterior Compression Lateral Compression Vertical Shear I APC I - Symphysis widening 2.5 cm. Anterior SI joint diastasis. Disruption of sacrospinous and sacrotuberous ligaments LC II - Rami fracture and ipsilateral posterior ilium fracture dislocation III APC III - SI dislocation with associated vascular injury LC III - Ipsilateral lateral compression and contralateral APC
Young-Burgess classification
Nissen-Lie classification
Frykman classification
Gartland classification
Wassel classification
Tscherne classification
Ruedi–Allgower classification
Pipkin classification