Thompson and Epstein classification
The Thompson and Epstein classification is a system of categorizing posterior fracture/dislocations of the hip.
Classification
| Type | Description |
| I | with or without a minor fracture |
| II | with a large single fracture of the posterior acetabular rim |
| III | with comminution of the acetabular ring |
| IV | with a fracture of the acetabular floor |
| V | with a fracture of the femoral head |