According to the ICD-10, the following forms can be distinguished:
- Intracapsular fracture (S72.01) – fracture line located in the capsule.
- Fracture in the region of the epiphysis (S72.02) – fracture line located in the joint end with bone core
- Subcapital fracture (S72.03) – fracture line located below the articular head.
- Mediocervical fracture (S72.04) – fracture line passing through the neck of the femur.
- Fracture at the base (S72.05)
- Fracture at other site (S72.08)
Classification of femoral neck fracture according to the AO (Arbeitsgemeinschaft für Osteosynthesefragen).
| Class | Fracture description |
| 31-B1 | Fracture subcapital, poorly dislocated, may be impacted |
| 31-B2 | Fracture transcervical |
| 31-B3 | Fracture subcapital, dislocated, not impacted |
Classification of femoral neck fracture according to Pauwels.
| Type according to Pauwels | Description of the fracture line |
| Pauwels I | to the horizontal < 30° |
| Pauwels II | to the horizontal 30-50° |
| Pauwels III | to the horizontal > 50° |
Classification of femoral neck fracture according to Garden
| Type according to Garden | Fracture description |
| Type I | Fracture incomplete |
| Type II | Fracture complete, no dislocation |
| Type III | Fracture complete, partially displaced |
| Type IV | Fracture complete, completely displaced (fracture surfaces without contact) |
