Fig. 12.50.15
Pipkin’s classification of femoral head fractures. A) Pipkin type 1. The femoral head fracture lies caudad to the fovea. B) Pipkin type II. The femoral head fracture lies cephalad to the fovea. C) Pipkin type III fractures have a fracture of the femoral neck associated with a type 1 or type II fracture of the femoral head. D) Pipkin type IV fractures have a fracture of the acetabulum associated with a type 1 or type II fracture of the femoral head.