Score: Evans classification
Use: Intertrochanteric femur fractures
Type I
Fracture line extends upwards and outwards from the lesser trochanter (stable)
Ia: undisplaced two-fragment fracture
Ib: displaced two-fragment fracture
Ic: three-fragment fracture without posterolateral support, owing to displacement of greater trochanter fragment
Id: three-fragment fracture without medial support, owing to displaced lesser trochanter or femoral arch fragment
Ie: four-fragment fracture without postero-lateral and medial support
Type II
Fracture line extends downwards and outwards from the lesser trochanter (reversed obliquity / unstable)Reference
Classification and Diagnosis in Orthopaedic Trauma. Editors: Rahij Anwar, Kenneth W. R. Tuson, Shah Alam Khan. Cambridge University Press, 2008