| Classification | Simplified classification | Description | Notes |
| Type 1 | Nondisplaced | Incomplete, nondisplaced, including valgus impacted fractures | ~7% AVN. Typically treated with percutaneous fixation |
| Type 2 | Complete, nondisplaced | ||
| Type 3 | Displaced | Complete, incompletely displaced | ~ 37% AVN. Typically treated with ORIF or arthroplasty |
| Type 4 | Complete, completely displaced |
References:
Sheehan, S. E., et al. (2015). “Proximal Femoral Fractures: What the Orthopedic Surgeon Wants to Know.” Radiographics 35(5): 1563-1584.
Garden R S. Low angle fixation in fractures of the femoral neck. J Bone Joint Surg (Br) 1961; 43: 647–63