Pipkin classification
The Pipkin classification is a system of categorizing femoral head hip fractures based on the fracture pattern.
Classification
| Type | Description |
| I | Fracture below the fovea; not involving weight-bearing surface of the head |
| II | Fracture above the fovea; involving weight-bearing surface of the head |
| III | Type I or II fracture with associated femoral neck fracture |
| IV | Type I or II fracture with associated acetabulum fracture |