{"title":"Casebank public aggregate summary","version":"2026-09-13-v3","source":"https://www.hanjinjangspine1.com/casebank#count-method","custodian":"Hanjin Jang, MD","updated":"2026-09-15","clinicalSnapshot":"May 2026","videoCatalogueSnapshot":"14 August 2026","clinicalRecords":5159,"attributedSourceRecords":5160,"exactDuplicatesRemoved":1,"clinicalSourceSites":4,"historicalVideoCases":334,"historicalMediaRecords":3126,"videoCatalogueCases":100,"videoPublishedExcerpts":91,"videoExcludedRecords":9,"videoCatalogueFileLocations":341,"sourceKeyConflictGroups":3,"annual":[{"year":2016,"clinical":486,"historicalVideo":0,"videoCatalogue":0},{"year":2017,"clinical":496,"historicalVideo":0,"videoCatalogue":0},{"year":2018,"clinical":0,"historicalVideo":238,"videoCatalogue":0},{"year":2019,"clinical":557,"historicalVideo":96,"videoCatalogue":1},{"year":2020,"clinical":795,"historicalVideo":0,"videoCatalogue":0},{"year":2021,"clinical":944,"historicalVideo":0,"videoCatalogue":0},{"year":2022,"clinical":1025,"historicalVideo":0,"videoCatalogue":85},{"year":2023,"clinical":304,"historicalVideo":0,"videoCatalogue":0},{"year":2024,"clinical":73,"historicalVideo":0,"videoCatalogue":0},{"year":2025,"clinical":365,"historicalVideo":0,"videoCatalogue":6},{"year":2026,"clinical":114,"historicalVideo":0,"videoCatalogue":8}],"driveVideoInventory":{"auditedAt":"2026-09-12","sourceCollections":8,"foldersScanned":767,"videoFileRecords":1188,"nonemptyFileRecords":1125,"zeroByteFileRecords":63,"filenameSizeGroups":992,"extraRecordsInRepeatedMetadataGroups":196,"contentIdentityVerified":false,"clinicalCaseIdentityVerified":false,"scope":"Eight identified surgical-media collections in the connected Google Drive account, including their descendants. This is not an inventory of every Drive account or every folder.","countingMethod":"One record per distinct Drive file ID with a video MIME type. Original filenames, folder paths and file links remain private. File copies and alternate edits may remain in this total.","matchingMethod":"Filename-and-size grouping identifies review candidates only. A metadata match does not verify identical file contents or a unique clinical case.","publicationScope":"The Drive listing remains a file inventory. Separately authorized excerpts from the retained 100-record video catalogue are available in the open operative archive. Neither publication nor file matching establishes unique patients, verified operative indications or outcomes."},"publishedTeachingEntries":9,"publishedVideoArchive":{"updated":"2026-09-13","catalogueRecords":100,"publishedEntries":91,"recordedLevelDistribution":[{"recordedLevels":1,"entries":1},{"recordedLevels":2,"entries":2},{"recordedLevels":null,"entries":88}],"source":"https://www.hanjinjangspine1.com/casebank/video-archive","definition":"One public excerpt per eligible catalogue record. Not a count of unique patients or operations; overlap with detailed teaching cases is not established."},"teachingLevelDistribution":[{"treatedLevels":1,"entries":4},{"treatedLevels":2,"entries":2},{"treatedLevels":3,"entries":1},{"treatedLevels":null,"entries":2}],"definitions":{"clinicalRecords":"Retained records attributed to Hanjin Jang after whitespace-normalized exact-duplicate removal, excluding internal row identifiers from comparison.","historicalVideoCases":"Case records in the historical database; linked media-file records include video and images.","videoCatalogueCases":"Case records in the separate August 2026 catalogue; listed file locations are not a verified unique-video count.","publishedTeachingEntries":"Seven clinical summaries, one operative-video example and one published-paper case. Not a consecutive patient registry.","teachingLevelDistribution":"Only the open teaching collection. null means the treated level count is unreported; a treated motion segment counts once.","annualZero":"No records for that year in the available collection; not proof of zero clinical activity."},"limitations":["Collections may overlap and must not be added together.","Counts do not establish unique patients, lifetime operations, UBE volume or treatment success.","Source snapshots do not reconstruct every year of practice.","The technical recount is not an independent clinical audit or patient-level outcome verification.","Underlying patient records and private media are not included."]}