Abstract
Purpose
We aimed to compare the outcomes between closed reduction (CR) and open reduction (OR) in children aged 6–24 months with developmental dysplasia of the hip (DDH) who could be reduced safely and stably by the closed reduction operation.
Methods
We retrospectively reviewed the medical records of 77 patients who underwent CR or OR for DDH. Fifty-one patients (56 hips) underwent CR, 26 (29 hips) underwent OR. The demographic data, International Hip Dysplasia Institute classification and acetabular index (AI) before reduction and the centre-edge angle (CEA), AI, Alsberg angle (AA), Reimer’s migration index (RMI), and height-to-width index (HWI) of the epiphysis were compared between two groups at the final follow-up. The percentage of coxa magna > 15% of the normal side and AA > 81° were calculated.
Results
At the final follow-up, the mean AA in the CR and OR groups were 77.66° (60°–89°) and 81.97° (73°–91°) (p = 0.001), respectively, there were 32.14% and 58.62% of the hips with an AA > 81° (p = 0.019). The frequency of coxa magna > 15% of the normal side was higher in the OR group (60.9%) than in the CR group (6.5%) (p < 0.001). There was no difference in the improvement of AI, CEA, HWI, and RMI.
Conclusion
In children aged 6–24 months with DDH, if a stable and safe CR can be obtained but with medial joint space up to 6mm, CR should be attempted first.
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Acknowledgements
This work was supported by National Nature Science Foundation of China (Grant number: 81772296).
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SM: data collection and analysis, manuscript preparation. WZ: data collection and analysis, manuscript preparation. LL: project administration, manuscript revision, fund acquisition. EW: data collection and analysis. LZ: data analysis, manuscript revision. QL: data analysis, manuscript revision.
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This study was approved by the Medical Ethics Committee of the authors' institution (Approval No. 2020PS113K).
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Ma, S., Zhou, W., Li, L. et al. Retrospective Comparison of Outcomes Between Closed and Open Reduction for Developmental Dysplasia of the Hip in Children Aged 6–24 Months. JOIO 56, 1640–1646 (2022). https://doi.org/10.1007/s43465-022-00690-9
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DOI: https://doi.org/10.1007/s43465-022-00690-9