Description made by the authors based on the illustrations of Vialle et al.9
| Type | Description |
| I | Dislocation of facet joints without fracture. |
| A | Unilateral rotatory dislocation secondary to traumatic rotational forces. |
| B | Bilateral facet joint dislocation with lateral displacement. |
| C | Bilateral dislocation with anterior displacement of the L5 vertebra. |
| II | Unilateral dislocation of the articular process due to rotational fracture. |
| III | Bilateral fracture dislocation with anterior displacement and disc injury. |
| A | Bilateral fracture with anterior displacement of L5. This type of fracture can go through the pars interarticularis. |
| B | Bilateral fracture with rotational displacement associated with L5 slippage. |