ArticleFrontiers in surgery2026
MRI-CT fusion-based digital true hip reconstruction in pediatric developmental dysplasia of the hip: a preliminary feasibility report.
Article in Frontiers in surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: To explore the early clinical feasibility and safety of MRI-CT fusion-based digital "osseous-cartilaginous" hip reconstruction in pediatric developmental dysplasia of the hip (DDH). Methods: A retrospective analysis was performed on 15 pediatric DDH patients (1 male, 14 females; age 2-12 years, mean 6.06 ± 3.32 years) treated between January 2017 and December 2024, including 12 unilateral and 3 bilateral cases (18 hips total). Preoperative CT and MRI data were fused to construct individualized three-dimensional (3D) "osseous-cartilaginous" hip models, followed by hybrid 3D printing for physical model fabrication. Measurements included femoral neck-shaft angle, anteversion angle, and both osseous and cartilaginous acetabular parameters (acetabular index and coverage rate) to guide personalized osteotomy planning and computer-aided guide plate design. Surgical parameters (operative time, blood loss, fluoroscopy times) and postoperative complications were recorded. Functional outcomes were evaluated using the Mackay scoring system. Results: Preoperative measurements showed statistically significant differences between osseous and cartilaginous parameters (acetabular index: 30.77° ± 4.98° vs. 19.07° ± 4.03°; coverage rate: 54.67% ± 4.89% vs. 76.78% ± 8.29%; both Conclusion: MRI-CT fusion-based digital technology offers a feasible and safe approach for individualized surgical planning in pediatric DDH, with satisfactory short-term clinical outcomes. However, as a preliminary case series without quantitative geometric validation, further prospective studies are warranted.
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