{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T06:05:09Z","timestamp":1790057109985,"version":"4.0.1"},"reference-count":23,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T00:00:00Z","timestamp":1790035200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Surg."],"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To explore the early clinical feasibility and safety of MRI-CT fusion-based digital \u201cosseous-cartilaginous\u201d hip reconstruction in pediatric developmental dysplasia of the hip (DDH).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A retrospective analysis was performed on 15 pediatric DDH patients (1 male, 14 females; age 2\u201312 years, mean 6.06\u2009\u00b1\u20093.32 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) \u201cosseous-cartilaginous\u201d 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.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Preoperative measurements showed statistically significant differences between osseous and cartilaginous parameters (acetabular index: 30.77\u00b0\u2009\u00b1\u20094.98\u00b0 vs. 19.07\u00b0\u2009\u00b1\u20094.03\u00b0; coverage rate: 54.67%\u2009\u00b1\u20094.89% vs. 76.78%\u2009\u00b1\u20098.29%; both\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&amp;lt;\u20090.05). All 18 hips underwent successful surgery as planned. The mean operative time was 2.64\u2009\u00b1\u20090.74\u2005h, with an average blood loss of 291.67\u2009\u00b1\u2009184.11\u2005mL and fluoroscopy times of 8.50\u2009\u00b1\u20092.36. Postoperatively, the neck-shaft angle improved to 132.24\u00b0\u2009\u00b1\u20098.26\u00b0, and the osseous acetabular index decreased significantly to 15.40\u00b0\u2009\u00b1\u20094.01\u00b0 (\n                      <jats:italic>P<\/jats:italic>\n                      \u2009&amp;lt;\u20090.05). All patient-specific guides were successfully seated intraoperatively without adjustment. No major complications occurred during follow-up. Minor complications were recorded in 4 of 18 hips (22.2%), including transient femoral nerve palsy (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20092), superficial wound dehiscence with fat liquefaction (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20091), and grade I pressure sore related to spica cast immobilization (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u20091), all of which resolved with conservative management. The Mackay scoring system showed excellent outcomes in 16 hips and good in 2 (excellent-good rate: 100%).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>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.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fsurg.2026.1952183","type":"journal-article","created":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T05:39:18Z","timestamp":1790055558000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["MRI-CT fusion-based digital true hip reconstruction in pediatric developmental dysplasia of the hip: a preliminary feasibility report"],"prefix":"10.3389","volume":"13","author":[{"given":"Wei","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Anhui Provincial Clinical Research Center for Spinal Deformities, Fuyang People\u2019s Hospital, Fuyang People\u2019s Hospital Affiliated to Anhui Medical University","place":["Fuyang, Anhui, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"WenQiang","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Anhui Provincial Clinical Research Center for Spinal Deformities, Fuyang People\u2019s Hospital, Fuyang People\u2019s Hospital Affiliated to Anhui Medical University","place":["Fuyang, Anhui, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"ChaoYu","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Anhui Provincial Clinical Research Center for Spinal Deformities, Fuyang People\u2019s Hospital, Fuyang People\u2019s Hospital Affiliated to Anhui Medical University","place":["Fuyang, Anhui, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"YongFei","family":"Fan","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Anhui Provincial Clinical Research Center for Spinal Deformities, Fuyang People\u2019s Hospital, Fuyang People\u2019s Hospital Affiliated to Anhui Medical University","place":["Fuyang, Anhui, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"HaiYang","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Anhui Provincial Clinical Research Center for Spinal Deformities, Fuyang People\u2019s Hospital, Fuyang People\u2019s Hospital Affiliated to Anhui Medical University","place":["Fuyang, Anhui, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,22]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"375","DOI":"10.1007\/s11832-014-0615-y","article-title":"A review of environmental factors implicated in human developmental dysplasia of the hip","volume":"8","author":"Rhodes","year":"2014","journal-title":"J Children's 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