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