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Between June 2014 and May 2015, navigation templates were designed and used for 12 DDH patients. Surgical information and outcomes were compared to 13 patients undergoing the same surgery but without navigation template. In template-guided patient group, operation time (21.08\u2009min vs. 46.92\u2009min), number of X-ray exposures (3.92 vs. 6.69), and occurrence of femoral epiphysis damage (0 vs. 0.92) were significantly decreased (P\u2009&lt;\u20090.05). Furthermore, after 12\u201318 months follow-up, 66.7% and 16.7% of the hips in template-guided group were rated as excellent or good, respectively, according to the McKay criteria; 83.3% and 16.7% by using the Severin criteria respectively. By contrast, 46.2% and 23.1% of the hips in traditional operation group were classed as excellent or good, respectively, using the McKay criteria; 46.2% and 30.8% by using the Severin criteria respectively. The template-guided group achieved a better outcome; however, there was no significant difference. Application of the navigation template for older DDH children can reduce the operation time, radiation exposure, and epiphysis damage, which also simplifies surgery and improves precision.<\/jats:p>","DOI":"10.1038\/srep44993","type":"journal-article","created":{"date-parts":[[2017,3,21]],"date-time":"2017-03-21T12:55:08Z","timestamp":1490100908000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":53,"title":["3D-printed navigation template in proximal femoral osteotomy for older children with developmental dysplasia of the hip"],"prefix":"10.1038","volume":"7","author":[{"given":"Pengfei","family":"Zheng","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peng","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qingqiang","family":"Yao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai","family":"Tang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Lou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2017,3,21]]},"reference":[{"key":"BFsrep44993_CR1","doi-asserted-by":"publisher","first-page":"268","DOI":"10.1016\/j.jss.2014.03.003","volume":"189","author":"X Zhao","year":"2014","unstructured":"Zhao, X. et al. Surgical results of developmental dysplasia of the hip in older children based on using three-dimensional computed tomography. J Surg Res. 189, 268\u2013273 (2014).","journal-title":"J Surg Res."},{"key":"BFsrep44993_CR2","doi-asserted-by":"publisher","first-page":"401","DOI":"10.1186\/1471-2474-15-401","volume":"15","author":"B Ning","year":"2014","unstructured":"Ning, B., Yuan, Y., Yao, J., Zhang, S. & Sun, J. Analyses of outcomes of one-stage operation for treatment of late-diagnosed developmental dislocation of the hip: 864 hips followed for 3.2 to 8.9 years. BMC Musculoskel Dis. 15, 401 (2014).","journal-title":"BMC Musculoskel Dis"},{"key":"BFsrep44993_CR3","doi-asserted-by":"publisher","first-page":"341","DOI":"10.1097\/BRS.0000000000000772","volume":"40","author":"S Kaneyama","year":"2015","unstructured":"Kaneyama, S., Sugawara, T. & Sumi, M. Safe and Accurate Midcervical Pedicle Screw Insertion Procedure With the Patient-Specific Screw Guide Template System. Spine (Phila Pa 1976). 40, 341\u2013348 (2015).","journal-title":"Spine (Phila Pa 1976)."},{"key":"BFsrep44993_CR4","doi-asserted-by":"publisher","first-page":"827","DOI":"10.1007\/s00264-015-2813-8","volume":"40","author":"H Chen","year":"2016","unstructured":"Chen, H. et al. A novel navigation template for fixation of acetabular posterior column fractures with antegrade lag screws: design and application. Int Orthop. 40, 827\u2013834 (2016).","journal-title":"Int Orthop."},{"key":"BFsrep44993_CR5","first-page":"48","volume":"21","author":"H Chen","year":"2015","unstructured":"Chen, H., Wu, D., Yang, H. & Guo, K. Clinical Use of 3D Printing Guide Plate in Posterior Lumbar Pedicle Screw Fixation. Med Sci Monit. 21, 48\u201354 (2015).","journal-title":"Med Sci Monit"},{"key":"BFsrep44993_CR6","doi-asserted-by":"publisher","first-page":"124","DOI":"10.1097\/00003086-197401000-00013","volume":"98","author":"DW McKay","year":"1974","unstructured":"McKay, D. W. A comparison of the innominate and pericapsularosteotomy in the treatment of congenital dislocation of the hip. Clin Orthop. 98, 124\u2013132 (1974).","journal-title":"Clin Orthop."},{"key":"BFsrep44993_CR7","doi-asserted-by":"publisher","first-page":"656","DOI":"10.2106\/00004623-199705000-00004","volume":"79","author":"WT Ward","year":"1997","unstructured":"Ward, W. T. et al. Severin classification system for evaluation of the results of operative treatment of congenital dislocation of the hip. J Bone Joint Surg. 79, 656\u2013663 (1997).","journal-title":"J Bone Joint Surg."},{"key":"BFsrep44993_CR8","doi-asserted-by":"publisher","first-page":"195","DOI":"10.2106\/00004623-198567020-00003","volume":"67","author":"JR Kasser","year":"1985","unstructured":"Kasser, J. R., Bowen, J. R. & MacEwen, G. D. Varus derotion osteotomy in the treatment of persistent dysplasia in congenital dislocation of the hip. 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