{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,11]],"date-time":"2026-11-11T23:49:38Z","timestamp":1794440978511,"version":"4.9.1"},"reference-count":25,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T00:00:00Z","timestamp":1785456000000},"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. Public Health"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>To evaluate the clinical value of a patient-specific proximal femoral plate combined with a modular 3D-printed osteotomy guide system in children with developmental dysplasia of the hip (DDH) undergoing proximal femoral osteotomy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and methods<\/jats:title>\n                    <jats:p>This retrospective study included children with DDH who underwent proximal femoral osteotomy assisted by a modular 3D-printed osteotomy guide system. Patients were divided into a customized plate group and a conventional locking compression pediatric hip plate (LCP-PHP) group. Perioperative outcomes, including blood loss, operative time for the femoral procedure, and fluoroscopy frequency, were compared. Radiographic parameters, including neck-shaft angle (NSA), femoral anteversion angle (FAA), acetabular index (AI), and center-edge (CE) angle, were assessed postoperatively and at final follow-up. Functional outcomes, complications, and measurement reliability were also evaluated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 40 patients were included. The mean follow-up duration was 32.32 \u00b1 4.18 months in the customized plate group and 31.39 \u00b1 3.88 months in the conventional LCP-PHP group. No major complications were observed in either group. Compared with the conventional LCP-PHP group, the customized plate group showed a significantly smaller loss of planned NSA correction, whereas FAA correction loss was similar between groups. No significant between-group differences were found in blood loss, operative time, fluoroscopy frequency, postoperative radiographic parameters, final follow-up outcomes, or functional results. Reliability analysis demonstrated excellent reproducibility of radiographic measurements, supporting the validity of the difference in NSA correction loss.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>A patient-specific proximal femoral plate combined with a modular 3D-printed osteotomy guide system appears to be a feasible and safe option for proximal femoral osteotomy in children with DDH. Compared with the conventional LCP-PHP, the customized plate more accurately maintained the planned NSA correction and may help improve correction accuracy in pediatric hip reconstruction.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpubh.2026.1891091","type":"journal-article","created":{"date-parts":[[2026,7,31]],"date-time":"2026-07-31T05:38:37Z","timestamp":1785476317000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Patient-specific proximal femoral plate combined with a modular 3D-printed osteotomy guide system in children with developmental dysplasia of the hip: a retrospective comparative study"],"prefix":"10.3389","volume":"14","author":[{"given":"Haoran","family":"Qi","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University","place":["Harbin, Heilongjiang, 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