| Classification | Description | Notes |
| Type 1 | Fracture inferior to the fovea capitis | Can be treated conservatively in nondisplaced |
| Type 2 | Fracture separates the fovea capitis from femoral head | Typically treated operatively |
| Type 3 | Pipkin 1 or 2 plus femoral neck fracture | Increased risk of AVN. Percutaneous fixation in younger patients, arthroplasty in older patients |
| Type 4 | Pipkin 1 or 2 plus acetabular fracture | Treatment depends on configuration of fracture fragments |
References
Droll, K. P., et al. (2007). “Fracture of the femoral head.” J Am Acad Orthop Surg 15(12): 716-727.
Pipkin G: Treatment of grade IV fracture-dislocation of the hip. J Bone Joint Surg Am 1957;39:1027-1042.