The purpose of this study was to evaluate 14 painful dislocated hips in patients with spastic cerebral palsy, treated with hip arthrodesis and internal fixation. The mean age at the surgical procedure was 15 years and 5 months. The mean follow-up period was 5 years and 3 months. All patients showed bone union, pain relief, and postural improvement. Hip arthrodesis is a reasonable option in treating painful spastic subluxated and dislocated hips in patients with cerebral palsy, especially if it is unilateral and the patient has weight-bearing function.