Fig. 1
From: 3D printing-based Ganz approach for treatment of femoral head fractures: a prospective analysis
Pipkin classification of femoral head fractures with posterior hip dislocations. Types I and II are distinguished by the position of the fracture in relation to the fovea. Type I is below the fovea with the fracture outside of the weight-bearing joint-parts, whereas type II fractures involve the more cranial, weight-bearing parts. Type III is any fracture of the head in combination with a femoral neck fracture. Additional fractures of the acetabulum are classified as type IV