Pipkin femoral head fracture classification

Pipkin classification is the most commonly used classification for femoral head fractures, which are uncommon but are associated with hip dislocations.

Classification

  • type I: fracture inferior to the fovea capitis, a small fracture not involving the weightbearing surface
  • type II: fracture extending superior to the fovea capitis, a large fracture involving the weightbearing surface
  • type III: type I or II fracture with a fracture of the femoral neck, has an increased risk of avascular necrosis
  • type IV: type I or II fracture with a fracture of the acetabular wall, usually the posterior wall