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