Slotted Acetabular Augmentation With Concurrent Open Reduction for Developmental Dysplasia of the Hip in Older Children

Background: The slotted acetabular augmentation procedure can never achieve a concentric and congruous reduction of the femoral head. The aim of this study was to review the results of the slotted acetabular augmentation procedure performed at the time of open reduction for developmental dysplasia of the hip in older children. Methods: Twenty-two patients with 27 hips underwent open reduction with concurrent slotted acetabular augmentation. The average age at the time of surgery was 8.5 years. The average follow-up was 8.3 years. Results: Using modified McKay clinical criteria, 16 hips were classified as excellent, 8 hips as good, and 3 hips as fair. Using modified Severin radiographic criteria, 15 hips gave excellent results and 12 hips gave good results. Conclusions: Slotted acetabular augmentation with concurrent open reduction can be an effective procedure for developmental dysplasia of the hip in older children. Level of evidence: The study of therapeutic studies investigating the results of the treatment is level II.