Hanjin Jang, MDEndoscopic Spine Surgery
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Operative Concepts

Article-style surgical reasoning notes

Concise academic pages on the concepts that shape patient selection, technical boundaries, and surgical planning in endoscopic lumbar spine surgery.

Article

Why imaging-symptom concordance matters

A surgical target is better defined when symptoms, neurologic findings, and imaging point to the same anatomical problem.

Article

Decompression strategy in severe lumbar stenosis

Severe stenosis requires a planned sequence for exposure, ligament handling, contralateral reach, and neural safety.

Article

Technical boundaries of endoscopic lumbar fusion

UBE-TLIF has technical and biological limits that should be stated clearly in preoperative planning.

Article

Revision surgery under endoscopic visualization

Revision endoscopy emphasizes altered anatomy, scar tissue, and a narrowly defined operative target.

Article

Managing bleeding in biportal endoscopic surgery

Hemostasis in an irrigated endoscopic field requires anticipation, outflow control, and precise tissue handling.

Article

Learning curve in UBE surgery

UBE surgery involves a distinct set of visual, ergonomic, and safety-related skills that should be learned progressively.

Article

Surgical decision-making in elderly patients

Older patients require planning that integrates neurologic need, medical risk, frailty, bone quality, and recovery goals.

Article

Interbody Cage Selection and Endoscopic Approach Rationale in Biportal Spine Surgery

Technical considerations in interbody cage selection during biportal endoscopic spine surgery, and the rationale for endoscopic approach preferences, presented as an operative concept for surgical education.

Article

UBE Far-Lateral Approach and Foraminotomy with Discectomy at L5-S1

A technical note on right L5-S1 foraminal disc herniation and exiting L5 root decompression.