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
Pipkin classification
Wassel classification
Nissen-Lie classification
Frykman classification
Spaulding classification
Gartland classification
Milch classification
Ideberg classification