Comparative cross-sectional study of optimal screw positioning in the talus during arthroscopic ankle arthrodesis: A CT-based analysis

Comparative cross-sectional study of optimal screw positioning in the talus during arthroscopic ankle arthrodesis: A CT-based analysis | 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 Research Article Comparative cross-sectional study of optimal screw positioning in the talus during arthroscopic ankle arthrodesis: A CT-based analysis Satoshi Kamijo, Tsukasa Kumai, Yasuhito Tanaka This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4958198/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 Objective: The prevalence of symptomatic ankle osteoarthritis increases with age; thus, affected individuals potentially have osteoporosis and talar fragility. Therefore, while performing osteosynthesis between the tibial plafond and the talar trochlea during arthroscopic ankle arthrodesis, increased stability and compression pressure during fixation are needed. Screw threads must be anchored within the talus; however, the bone mineral density of the talus has not been reported. We aimed to determine if the bone mineral density of the talus is lower in patients with ankle osteoarthritis than in healthy individuals, in addition to which part has the highest bone mineral density. Materials and methods: We studied the talus of 10 feet without and 10 with end-stage ankle osteoarthritis. Each talar cancellous bone was divided into the lateral process, head and neck, middle body, and medial body. Computed tomographic of each segment was measured to calculate the relative bone mineral density difference between the regions. Result: The mean computed tomographic values were 638.329 ± 139.765 standard deviation (SD), 465.960 ± 74.254 SD, 537.109 ± 82.443 SD, and 469.016 ± 84.490 SD of the healthy talus group and were 360.994 ± 117.403 SD, 284.397 ± 101.142 SD, 327.814 ± 114.772 SD, and 297.524 ± 105.667 SD in the end-stage ankle osteoarthritis talus group for the five respective segments above. Conclusions: The bone mineral density values were significantly lower in the end-stage ankle osteoarthritis talus than in the healthy talus. The bone mineral relative density was highest from the body middle to the lateral process. Orthopedics value of computed tomography ankle osteoarthritis arthroscopic ankle arthrodesis talar fragility bone mineral density of talus Full Text Additional Declarations The authors declare no competing interests. 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-4958198","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":343714478,"identity":"641243b1-3583-4036-9b16-c1e1bceaf8f8","order_by":0,"name":"Satoshi Kamijo","email":"data:image/png;base64,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","orcid":"","institution":"Center for Foot and Ankle Surgery \u0026 Department of Orthopedic Surgery, Suwakohan Hospital","correspondingAuthor":true,"prefix":"","firstName":"Satoshi","middleName":"","lastName":"Kamijo","suffix":""},{"id":343714479,"identity":"4e0d5612-4a27-4710-8925-bb4ad13221e6","order_by":1,"name":"Tsukasa Kumai","email":"","orcid":"","institution":"Faculty of Sport Sciences, Waseda University","correspondingAuthor":false,"prefix":"","firstName":"Tsukasa","middleName":"","lastName":"Kumai","suffix":""},{"id":343715947,"identity":"14627eba-317b-493e-89a6-93689302d79d","order_by":2,"name":"Yasuhito Tanaka","email":"","orcid":"","institution":"Department of Orthopaedic Surgery, Nara Medical University","correspondingAuthor":false,"prefix":"","firstName":"Yasuhito","middleName":"","lastName":"Tanaka","suffix":""}],"badges":[],"createdAt":"2024-08-22 12:56:19","currentVersionCode":1,"declarations":{"humanSubjects":true,"vertebrateSubjects":false,"conflictsOfInterestStatement":false,"humanSubjectEthicalGuidelines":true,"humanSubjectConsent":true,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-4958198/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4958198/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":63081387,"identity":"dc3f789c-9513-4383-8922-9f3b1efe7469","added_by":"auto","created_at":"2024-08-23 01:23:25","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":817023,"visible":true,"origin":"","legend":"","description":"","filename":"ComparativecrosssectionalstudyofoptimalscrewpositioninginthetalusduringarthroscopicanklearthrodesisACTbasedanalysis.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4958198/v1_covered_c0cf31d8-2b14-40bc-bd96-4dac74dc121a.pdf"}],"financialInterests":"The authors declare no competing interests.","formattedTitle":"\u003cp\u003eComparative cross-sectional study of optimal screw positioning in the talus during arthroscopic ankle arthrodesis: A CT-based analysis\u003c/p\u003e","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"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},"keywords":"value of computed tomography, ankle osteoarthritis, arthroscopic ankle arthrodesis, talar fragility, bone mineral density of talus","lastPublishedDoi":"10.21203/rs.3.rs-4958198/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4958198/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003e\u003cstrong\u003eObjective: \u003c/strong\u003eThe prevalence of symptomatic ankle osteoarthritis increases with age; thus, affected individuals potentially have osteoporosis and talar fragility. Therefore, while performing osteosynthesis between the tibial plafond and the talar trochlea during arthroscopic ankle arthrodesis, increased stability and compression pressure during fixation are needed. Screw threads must be anchored within the talus; however, the bone mineral density of the talus has not been reported. We aimed to determine if the bone mineral density of the talus is lower in patients with ankle osteoarthritis than in healthy individuals, in addition to which part has the highest bone mineral density.\u0026nbsp;\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaterials and methods:\u003c/strong\u003e We studied the talus of 10 feet without and 10 with end-stage ankle osteoarthritis. Each talar cancellous bone was divided into the lateral process, head and neck, middle body, and medial body. Computed tomographic of each segment was measured to calculate the relative bone mineral density difference between the regions.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eResult:\u003c/strong\u003e The mean computed tomographic values were 638.329 ± 139.765 standard deviation (SD), 465.960 ± 74.254 SD, 537.109 ± 82.443 SD, and 469.016 ± 84.490 SD of the healthy talus group and were 360.994 ± 117.403 SD, 284.397 ± 101.142 SD, 327.814 ± 114.772 SD, and 297.524 ± 105.667 SD in the end-stage ankle osteoarthritis talus group for the five respective segments above.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eConclusions: \u003c/strong\u003eThe bone mineral density values were significantly lower in the end-stage ankle osteoarthritis talus than in the healthy talus. The bone mineral relative density was highest from the body middle to the lateral process.\u0026nbsp;\u003c/p\u003e","manuscriptTitle":"Comparative cross-sectional study of optimal screw positioning in the talus during arthroscopic ankle arthrodesis: A CT-based analysis","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-08-23 01:15:17","doi":"10.21203/rs.3.rs-4958198/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":"7534a6a6-9043-405e-a0ba-e18b90d0e7fe","owner":[],"postedDate":"August 23rd, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":36422063,"name":"Orthopedics"}],"tags":[],"updatedAt":"2024-08-23T01:15:17+00:00","versionOfRecord":[],"versionCreatedAt":"2024-08-23 01:15:17","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4958198","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4958198","identity":"rs-4958198","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}