Abstract
INTRODUCTION: Pemberton osteotomy is a widely used operation in developmental dysplasia of the hip (DDH). The traditional pelvic osteotomy was through outside of the ilium. However, in this study, we performed the pelvic osteotomy through the inner ilium approach. PATIENTS AND METHODS: We retrospectively analyzed 79 patients diagnosed with DDH with open surgery in our hospital from March 2016 to May 2018. There were 39 patients who underwent outside ilium Pemberton osteotomy (PO) and 40 patients who underwent inner "L shaped" ilium Pemberton osteotomy (ILSO). Acetabular index (AI), center-edge angle of Wiberg (CE angle), Severin grading scoring system, postoperative avascular necrosis (AVN) by Kalamchi and McEwen classification, and McKay grading scoring system were used for evaluation. RESULTS: There was no significant difference between the PO group and ILSO group on AI (p = 0.476), CE angles (p = 0.225), avascular necrosis (Kalamchi and McEwen, p = 0.854), and hip function (McKay's, p = 0.444) on the final follow-up. There were significant differences in X-ray radiation (p < 0.001), blood loss (p = 0.011) and surgery time (p < 0.001). CONCLUSION: Inner side ilium is a viable approach for Pemberton osteotomy of DDH in children with less X-ray radiation, and less blood loss and shorter surgery time. LEVEL OF EVIDENCE: III. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s43465-022-00676-7.