Delbet classification

The Delbet classification helps predict the risk of avascular necrosis of the femoral head in neck of femur fractures, as well as determine operative vs non-operative management.


  • type I: trans-epiphyseal separation
    • fracture through proximal femoral physis, and represents Salter-Harris type I fractures of the proximal femur (<10%)
      • IA: without dislocation
      • IB: with dislocation 
  • type II: transcervical fracture
    • fracture extending through mid-portion of the femoral neck
    • most common type of pediatric hip fracture (40-50%)
  • type III: cervicotrochanteric fracture
    • fracture though base of the femoral neck (25-35%)
  • type IV: Intertrochanteric fracture
    • between the greater and lesser trochanters (6-15%)
    • this type of fracture has the best outcome

History and etymology

Pierre Delbet was a French surgeon who operated on neck of femur fractures . He classified these fractures into four types in adults, which is now known as Delbet's classification of fractures of proximal femur . This was later adopted by Collona for fractures of the femoral neck in children without changes. He used it to determine treatment and prognosis of hip fracture in children .