Complications associated with fracture of the neck of the femur in children.

We reviewed 16 children with 16 displaced fractures of the femoral neck associated with complications. One was a transepiphyseal fracture, 12 were transcervical fractures, and three were basocervical fractures. The mean age at time of fracture was 11 years 7 months (range, 4 years 6 months to 16 years), and the mean length of follow-up after fracture was 6 years 11 months (range, 2-24 years). Complications in this series were avascular necrosis (AVN) (14 patients), nonunion (seven patients), premature physeal closure (15 patients), chondrolysis (seven patients), and coxa vara (two patients). Avascular necrosis, nonunion, and chondrolysis were associated with a poor outcome. Coxa vara or premature physeal closure alone was not responsible for a poor result.