To evaluate the mid- to long-term efficacy and safety of modified Pemberton osteotomy (MPO) in children with developmental dysplasia of the hip (DDH) over a minimum follow-up of 5 years.
Key Findings:
Mean follow-up duration was 7.21±1.64 years.
Mean acetabular index improved from 39.66 ± 5.46° preoperatively to 12.71 ± 8.37° at final follow-up.
88.7% of hips achieved excellent-good functional outcomes according to McKay criteria.
93.0% of hips showed excellent-good joint congruence based on Severin classification.
Avascular necrosis occurred in 8 hips (11.2%).
Interpretation:
MPO provides favorable and durable mid- to long-term clinical and radiographic outcomes for DDH in children, with improved surgical safety compared to conventional Pemberton osteotomy.
Limitations:
Retrospective study design may introduce bias.
Limited sample size may affect generalizability.
Conclusion:
MPO offers improved surgical safety and acceptable rates of avascular necrosis while achieving significant clinical and radiographic improvements in children with DDH.
