Inclusion Criteria:  Age > 16 years AO/OTA type A or C distal femur fracture Fracture located on the metaphyseal area of the distal femur (square method) Operative treatment in the Helsinki University Hospital with a distal femur anatomic lateral locking plate Operative treatment within 1 month after trauma Operative treatment between years 2009 and 2018  Exclusion Criteria:  Stress fracture Pathological fracture An epicondylar or subchondral fracture A ligament sprain in distal femur Treatment with a double-plating method or with both plate and nail Non-surgical treatment and patients who died before the treatment Treatment with an unconventional plate (other than distal femur plate) Patients whose follow-up criteria not fulfilled