Proximal femoral fracture is associated with severe morbidity and mortality and high socioeconomic costs. The main mechanical complication of internal fixation in trochanteric fracture is lag-screw cut-out through the femoral head. Several factors are involved, but remain controversial. The aim of the present study was to determine risk factors for cut-out in internal fixation of extracapsular proximal femoral fracture.

Inclusion Criteria:

• Patients over 75 years of age
• Operated on for extracapsular proximal femoral fracture
• After bodyheight fall

Exclusion Criteria:

• Intra-capsular fractures
• trochantero-diaphyseal fractures
• subtrochanteric fractures
• fractures involving pathological bone

Patients over 75 years old operated on for extracapsular proximal femoral fracture.