{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T16:34:58Z","timestamp":1790094898240,"version":"4.0.1"},"reference-count":36,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T00:00:00Z","timestamp":1709164800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001711","name":"Schweizerischer Nationalfonds zur F\u00f6rderung der Wissenschaftlichen Forschung","doi-asserted-by":"publisher","award":["Early Postdoc.Mobility P2BEP3_195241"],"award-info":[{"award-number":["Early Postdoc.Mobility P2BEP3_195241"]}],"id":[{"id":"10.13039\/501100001711","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Children's Orthopaedics"],"published-print":{"date-parts":[[2024,4]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives:<\/jats:title>\n                    <jats:p>Slipped capital femoral epiphyses (SCFE) is a common pediatric hip disease with the risk of osteoarthritis and impingement deformities, and 3D models could be useful for patient-specific analysis. Therefore, magnetic resonance imaging (MRI) bone segmentation and feasibility of 3D printing and of 3D ROM simulation using MRI-based 3D models were investigated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>A retrospective study involving 22 symptomatic patients (22 hips) with SCFE was performed. All patients underwent preoperative hip MR with pelvic coronal high-resolution images (T1 images). Slice thickness was 0.8\u20131.2\u2009mm. Mean age was 12\u2009\u00b1\u20092\u2009years (59% male patients). All patients underwent surgical treatment. Semi-automatic MRI-based bone segmentation with manual corrections and 3D printing of plastic 3D models was performed. Virtual 3D models were tested for computer-assisted 3D ROM simulation of patients with knee images and were compared to asymptomatic contralateral hips with unilateral SCFE (15 hips, control group).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>MRI-based bone segmentation was feasible (all patients, 100%, in 4.5 h, mean 272\u2009\u00b1\u200952\u2009min). Three-dimensional printing of plastic 3D models was feasible (all patients, 100%) and was considered helpful for deformity analysis by the treating surgeons for severe and moderate SCFE. Three-dimensional ROM simulation showed significantly (p\u2009&lt;\u20090.001) decreased flexion (48\u2009\u00b1\u200940\u00b0) and IR in 90\u00b0 of flexion (\u201314\u2009\u00b1\u200921\u00b0, IRF-90\u00b0) for severe SCFE patients with MRI compared to control group (122\u2009\u00b1\u20099\u00b0 and 36\u2009\u00b1\u200911\u00b0). Slip angle improved significantly (p\u2009&lt;\u20090.001) from preoperative 54\u2009\u00b1\u200915\u00b0 to postoperative 4\u2009\u00b1\u20092\u00b0.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>MRI-based 3D models were feasible for SCFE patients. Three-dimensional models could be useful for severe SCFE patients for preoperative 3D printing and deformity analysis and for ROM simulation. This could aid for patient-specific diagnosis, treatment decisions, and preoperative planning. MRI-based 3D models are radiation-free and could be used instead of CT-based 3D models in the future.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/18632521241229618","type":"journal-article","created":{"date-parts":[[2024,2,29]],"date-time":"2024-02-29T06:11:30Z","timestamp":1709187090000},"page":"162-170","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":5,"title":["MR-based Bony 3D models enable radiation-free preoperative patient-specific analysis and 3D printing for SCFE patients"],"prefix":"10.1177","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0475-0269","authenticated-orcid":false,"given":"Till D","family":"Lerch","sequence":"first","affiliation":[{"name":"Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University of Bern, Bern, Switzerland"},{"name":"Department of Orthopaedic Surgery, Child and Young Adult Hip Preservation Program at Boston Children\u2019s Hospital, Harvard Medical School, Boston, MA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tilman","family":"Kaim","sequence":"additional","affiliation":[{"name":"Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University of Bern, Bern, Switzerland"},{"name":"Graduate School for Health Sciences, University of Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Valentin","family":"Grob","sequence":"additional","affiliation":[{"name":"Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University of Bern, Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Markus","family":"Hanke","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Inselspital, University of Bern, Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8729-7243","authenticated-orcid":false,"given":"Florian","family":"Schmaranzer","sequence":"additional","affiliation":[{"name":"Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University of Bern, Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon D","family":"Steppacher","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Inselspital, University of Bern, Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jasmin D","family":"Busch","sequence":"additional","affiliation":[{"name":"Department of Diagnostic, Interventional and Paediatric Radiology, Inselspital, University of Bern, Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai","family":"Ziebarth","sequence":"additional","affiliation":[{"name":"Department of Pediatric Surgery, section of pediatric orthopedic surgery, Inselspital, University of Bern, Bern, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2024,2,29]]},"reference":[{"key":"bibr1-18632521241229618","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199173050-00004"},{"key":"bibr2-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1080\/000164700317393367"},{"key":"bibr3-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1302\/1863-2548.14.200021"},{"key":"bibr4-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1097\/00003086-199601000-00007"},{"key":"bibr5-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1302\/1863-2548-11-170277"},{"key":"bibr6-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-017-5252-6"},{"key":"bibr7-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.101B4.BJJ-2018-1303.R1"},{"key":"bibr8-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1097\/BPO.0000000000001713"},{"key":"bibr9-18632521241229618","doi-asserted-by":"publisher","DOI":"10.1007\/s00256-017-2761-z"},{"key":"bibr10-18632521241229618","volume":"92","author":"Facco 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