Score: Pipkin classification

Use: Femoral head fractures

Type I

Fracture inferior to fovea centralis

Type II

Fracture superior to fovea centralis

Type III

Type I or II + femoral neck fracture

Type IV

Type I, II or III + acetabular fracture

Reference

Classification and Diagnosis in Orthopaedic Trauma. Editors: Rahij Anwar, Kenneth W. R. Tuson, Shah Alam Khan. Cambridge University Press, 2008