Score: Seinsheimer classification

Use: Subtrochanteric femur fracture

Type I

Undisplaced fractures with less than 2mm displacement of the fractured fragments

Type II

Two-part fractures
  • IIA: two-part transverse fractures
  • IIB: two-part spiral fractures with lesser trochanter attached to the proximal fragment
  • IIC: two-part spiral fractures with lesser trochanter attached to the distal fragment
  • Type III

    Three-part fractures
  • IIIA: three-part spiral fractures in which the lesser trochanter is part of the third fragment, which has an inferior spike of varying length
  • IIIB: three-part spiral fractures of the proximal third of the femur, in which the third part is a butterfly fragment
  • Type IV

    Comminuted fractures with four or more fragments

    Type V

    Subtrochanteric-intertrochanteric fractures; including any subtrochanteric fracture with extension through the greater trochanter

    Reference

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