A novel computer-assisted drill guide template for guided correction of genu varum

A novel computer-assisted drill guide template for guided correction of genu varum | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article A novel computer-assisted drill guide template for guided correction of genu varum Ming Zou, Youzhi He, Qiang Shi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3869691/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Background : 8-plate hemiepiphysiodesis is widely used for treatment of genu varum. This present study is aimed to retrospectively explore the feasibility and efficacy of a novel computer-assisted drill guide template for guided correction of genu varum in children. Methods : Twenty-eight patients who underwent 8-plate hemiepiphysiodesis due to genu varum from June 2014 to June 2018 were retrospectively analyzed in our hospital. All cases were treated with 8-plate hemiepiphysiodesis and ultra-low-dose computed tomography (CT) scans of knee joint before surgery. Novel 3D printed digital navigation templates were used in 14 cases, while traditional surgery was used in other 14 cases. The radiation exposure, surgical time, valgus correction degrees, and complications were compared between the two groups. Results : All 3D printed digital navigation templates matched well with the anatomical markers of distal femur for preoperative planning and intraoperative procedures. Average operation times were 27.5 min (21.0-38.0 min) for the individualized navigation template group and 33.3 min (22-53 min) for the traditional operation group (p=0.0434). Average radiation exposure times were 4.8 times (3.0-8.0 times) for the individualized navigation template group and 7.5 times (5.0-9.0 times) for the traditional operation group (p<0.0001). Average rate of correction for mLDFA between individualized navigation template group and the traditional operation group were 11.0 ± 5.1 and 12.7 ± 4.8 (p=0.035). In the conventional group, the duration was 11.4±5.7 months while in navigation template group this period amounted to 11.0 ±6.1 months without a statistically significant difference (p=0.594). Conclusions : The Novel 3D printed digital navigation template can simplify the surgical procedure, reduce the operating time, and achieve less radiation exposure for treatment of genu varum in children. Health sciences/Medical research/Paediatric research Health sciences/Medical research/Study design/Clinical trials 3D printed technology Individualized navigation template 38 Genu varum Children Figures Figure 1 Figure 2 Figure 3 Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3869691","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":268315253,"identity":"d7f81a1e-f148-4554-8280-75aa0aecf45b","order_by":0,"name":"Ming Zou","email":"","orcid":"","institution":"University of South China","correspondingAuthor":false,"prefix":"","firstName":"Ming","middleName":"","lastName":"Zou","suffix":""},{"id":268315254,"identity":"f15691d7-8bc7-4911-8861-61bedc8aec9b","order_by":1,"name":"Youzhi He","email":"","orcid":"","institution":"University of South 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12:00:05","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3869691/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3869691/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":50052892,"identity":"12b504e9-54d4-4469-aa55-2ef8fbc5ee61","added_by":"auto","created_at":"2024-01-23 16:55:22","extension":"png","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":678576,"visible":true,"origin":"","legend":"\u003cp\u003ePreoperative computer simulated operation and design of the navigation template. a 3D reconstruction of the femur. b, c The navigational template based on the femoral parameters was designed pre-operatively using digital technology. d-f The navigational template was made using 3D printed technology\u003c/p\u003e","description":"","filename":"1.png","url":"https://assets-eu.researchsquare.com/files/rs-3869691/v1/622080ac451c68e789a9ae6a.png"},{"id":50051531,"identity":"22b4f7dc-e049-47b2-b081-0fe63ad05087","added_by":"auto","created_at":"2024-01-23 16:47:22","extension":"png","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":2811741,"visible":true,"origin":"","legend":"\u003cp\u003eIntraoperative operation using the navigation template. a The template was fixed with a Kirschner wire to prevent slippage after matching the distal end of the femur. b The upper and lower positioning pipes of the navigation template were also fixed with a Kirschner wire. c 3D printed navigation template was then removed. d 8-plate was fixed as preoperatively simulated\u003c/p\u003e","description":"","filename":"2.png","url":"https://assets-eu.researchsquare.com/files/rs-3869691/v1/49a28a64f141bb288d13776b.png"},{"id":50051533,"identity":"f4908d3a-a731-46a1-ad57-e99baec89820","added_by":"auto","created_at":"2024-01-23 16:47:22","extension":"png","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":1424636,"visible":true,"origin":"","legend":"\u003cp\u003eAppearance showing good correction of the deformity a, b Pre-operative and intraoperative fluoroscopy. c Appearance showing genu varum in a 5-year-old girl. c The last follow-up after removing 8-plate\u003c/p\u003e","description":"","filename":"3.png","url":"https://assets-eu.researchsquare.com/files/rs-3869691/v1/a0b7f911d7f7ff14a925cc36.png"},{"id":56832690,"identity":"f759f0f9-a1e8-4c87-9885-a24fde2732e3","added_by":"auto","created_at":"2024-05-21 05:01:54","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":592751,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3869691/v1_covered_d8cf5867-7ecf-48db-b765-d646291ec122.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"A novel computer-assisted drill guide template for guided correction of genu 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Children","lastPublishedDoi":"10.21203/rs.3.rs-3869691/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3869691/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003e\u003cstrong\u003eBackground\u003c/strong\u003e: 8-plate hemiepiphysiodesis is widely used for treatment of genu varum. This present study is aimed to retrospectively explore the feasibility and efficacy of a novel computer-assisted drill guide template for guided correction of genu varum in children.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMethods\u003c/strong\u003e: Twenty-eight patients who underwent 8-plate hemiepiphysiodesis due to genu varum from June 2014 to June 2018 were retrospectively analyzed in our hospital. All cases were treated with 8-plate hemiepiphysiodesis and ultra-low-dose computed tomography (CT) scans of knee joint before surgery. Novel 3D printed digital navigation templates were used in 14 cases, while traditional surgery was used in other 14 cases. The radiation exposure, surgical time, valgus correction degrees, and complications were compared between the two groups.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eResults\u003c/strong\u003e: All 3D printed digital navigation templates matched well with the anatomical markers of distal femur for preoperative planning and intraoperative procedures. Average operation times were 27.5 min (21.0-38.0 min) for the individualized navigation template group and 33.3 min (22-53 min) for the traditional operation group (p=0.0434). Average radiation exposure times were 4.8 times (3.0-8.0 times) for the individualized navigation template group and 7.5 times (5.0-9.0 times) for the traditional operation group (p\u0026lt;0.0001). Average rate of correction for mLDFA between individualized navigation template group and the traditional operation group were 11.0 ± 5.1 and 12.7 ± 4.8 (p=0.035). In the conventional group, the duration was 11.4±5.7 months while in navigation template group this period amounted to 11.0 ±6.1 months without a statistically significant difference (p=0.594).\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eConclusions\u003c/strong\u003e: The Novel 3D printed digital navigation template can simplify the surgical procedure, reduce the operating time, and achieve less radiation exposure for treatment of genu varum in children.\u003c/p\u003e","manuscriptTitle":"A novel computer-assisted drill guide template for guided correction of genu varum","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-01-23 16:47:17","doi":"10.21203/rs.3.rs-3869691/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"8b3d9481-d017-49b6-94d3-4a4769214ba2","owner":[],"postedDate":"January 23rd, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":28265903,"name":"Health sciences/Medical research/Paediatric research"},{"id":28265904,"name":"Health sciences/Medical research/Study design/Clinical trials"}],"tags":[],"updatedAt":"2024-05-21T04:53:37+00:00","versionOfRecord":[],"versionCreatedAt":"2024-01-23 16:47:17","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-3869691","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-3869691","identity":"rs-3869691","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}