Clinical experience · Casebank
Read source-labelled clinical summaries, an operative-video example and a published case. Each entry connects the recorded reasoning, treated levels, source evidence and information that remains unreported.
Archive counts updated 2026-09-15 · Teaching collection updated 2026-09-11
Now open · 2026-09-13
Open the actual operative views, recorded procedure labels and level information. Each excerpt represents a catalogue record. These records may overlap with the detailed teaching cases and are not added together as a unique-patient or operation total.
Browse the open video archive →Hanjin Jang, MD · Case archive
Count checked
The clinical archive contains records attributed to Dr. Jang. The open video archive contains 91 excerpts selected from a separate 100-record catalogue; 9 records did not meet the publication criteria. Video collections and published teaching entries are counted separately because they may overlap. Archive totals measure retained records; they do not establish a lifetime total of unique patients, UBE operations, or successful treatments.
Browse the 9 open teaching entries →Clinical archive. The May 2026 database snapshot contains 5,160 records attributed to Hanjin Jang. Removing 1 identical duplicate leaves 5,159 archived records across 4 source institutions. Records are matched across their source fields after whitespace normalization, excluding internal row identifiers. 3 groups with conflicting source keys remain in the record count.
Video collections. The historical database holds 334 video case records linked to 3,126 media-file records, including videos and images. The separate catalogue dated 14 August 2026 holds 100 case records and 341 listed video-file locations. Of those catalogue records, 91 have eligible de-identified excerpts in the open archive and 9 are excluded under the stated publication criteria. Its earlier 83-case list is fully included and is not counted again. Multiple clips or file copies do not create additional cases.
Coverage. These are the available archive snapshots, not a complete reconstruction of every year of practice. A dash means no records for that year in that collection. Video years follow the catalogue recording dates. The technical recount does not independently verify procedure type, clinical outcomes, or the number of UBE operations. Only aggregate counts are public here.
| Year | Clinical records | Historical video | Video catalogue |
|---|---|---|---|
| 2016 | 486 | — | — |
| 2017 | 496 | — | — |
| 2018 | — | 238 | — |
| 2019 | 557 | 96 | 1 |
| 2020 | 795 | — | — |
| 2021 | 944 | — | — |
| 2022 | 1,025 | — | 85 |
| 2023 | 304 | — | — |
| 2024 | 73 | — | — |
| 2025 | 365 | — | 6 |
| 2026 | 114 | — | 8 |
| Total | 5,159 | 334 | 100 |
Archive custodian: Hanjin Jang, MD. Original clinical and media records remain private. Public teaching material follows the editorial and de-identification policy.
Verification scope. Counts were checked by a technical recount of the retained source records. This is not an independent clinical audit. A separate case-level medical reviewer and review date are not documented for this website edition; the journal-based entry retains its original publication context.
Hanjin Jang, MD academic resource. Casebank archive counts and counting method. Updated 2026-09-15. https://www.hanjinjangspine1.com/casebank#count-method. State the access date and retain the collection definitions when citing these counts.
Download aggregate counts and definitions (JSON) →Contains only public counts, annual totals and definitions. It contains no patient records or private media.
Private video archive · Inventory checked September 12, 2026
This inventory covers 8 identified collections and 767 folders. It is a file inventory, not a count of patients or operations. The 334 historical video case records and the separate 100-case catalogue may overlap with these files; these totals must not be added.
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. 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.
The records form 992 filename-and-size groups, with 196 additional file records in repeated groups. Filename-and-size grouping identifies review candidates only. A metadata match does not verify identical file contents or a unique clinical case. These groups are not published as a unique-video or unique-case total.
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. Source-level permission, identification of the clinical case, privacy review and medical context must be established before adding new footage.
Nine source-labelled entries: seven clinical summaries, one operative-video example, and one case from a paper coauthored by Han-Jin Jang. They form a selected teaching collection; a record-by-record match to the private archive has not been established.
Unreported fields stay unreported. A postoperative image is not a functional outcome, and a website update is not a new clinical review. Read the publication policy.
A level is one treated motion segment, such as L4-L5. Decompression and fusion at the same segment count once. The new operative target and a longer pre-existing fusion construct are reported separately. Two entries do not identify their exact operated levels. This distribution describes only the 9 open entries; it is not the level distribution of the 5,159 archived clinical records.
9 of 9 educational entries
Case 01 · Lumbar · Clinical summary
How is the decompression target defined in severe lumbar stenosis?
Levels not specified
Read case and evidence →Case 02 · Lumbar · Clinical summary
What supports adding fusion when spondylolisthesis and neurologic deficit coexist?
L4-L5
Read case and evidence →Case 03 · Lumbar · Clinical summary
How do altered anatomy and scar tissue change revision planning?
Levels not specified
Read case and evidence →Case 04 · Lumbar · Clinical summary
Which adjacent-level findings explain the new neurologic symptoms?
L3-L4
Read case and evidence →Case 05 · Cervical · Clinical summary
How do myelopathy, alignment, and compression pattern inform the approach?
C4-C5, C5-C6
Read case and evidence →Case 06 · Lumbar · Clinical summary
How is level numbering confirmed before a multilevel operation?
L3-L4, L4-L5, L5-L6
Read case and evidence →Case 07 · Lumbar · Clinical summary
Why must decompression and stabilization be justified at each revision level?
L4-L5, L5-S1
Read case and evidence →Case 08 · Lumbar · Operative video
How does an exiting L5 root target change the L5-S1 operative corridor?
L5-S1
Read case and evidence →Case 09 · Lumbar · Published case
What can a published recurrent-disc example show about revision targeting?
L5-S1
Read case and evidence →Case 08 organizes the existing L5–S1 far-lateral operative sequence into one teaching entry. Its clips are not separate cases. The original operative concept remains available for the full technical context.
View the operative concept →Start with the plain-English condition guides or the official Korean hospital information for practical care questions.
Patient education →