Seung-Jae Hyun
Seoul National University · 医学
研究室紹介
Professor Seung-Jae Hyun's research lab specializes in spinal deformity surgery and biomechanics, with a primary focus on adult spinal deformity (ASD), proximal junctional kyphosis (PJK), and proximal junctional failure (PJF). The lab investigates the etiology, risk factors, and clinical outcomes of postoperative complications following spinal osteotomy (PSO), particularly emphasizing the role of sagittal balance and C7 plumb line correction in improving surgical results. Using advanced imaging techniques such as MRI and CT, the lab quantifies paraspinal muscle degeneration in conditions like degenerative lumbar kyphosis (DLK), aiming to better understand muscle atrophy and fatty infiltration in spinal pathologies. The research integrates clinical outcomes with radiological and biomechanical analysis to optimize surgical planning and patient outcomes.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
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Intraoperative or postoperative complications are relatively common following PSO. Most late-onset complications in PSO patients were related to PJK and instrumentation failure. Correcting the C7 plumb line value with minimal operative complications seemed to lead to better clinical results.
The purpose of this review is the current understanding of proximal junctional kyphosis (PJK) and proximal junctional failure (PJF) following adult spinal deformity (ASD) surgery. We carried out a systematic search of PubMed for literatures published up to September 2017 with "proximal junctional kyphosis," "proximal junctional failure," and "adult spinal deformity" as search terms. A total of 98 literatures were searched. The 37 articles were included in this review. PJK is multifactorial in or
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STUDY DESIGN: A comparative case-control study. OBJECTIVE: The aim of this study was to quantify the degree of paraspinal muscle changes in degenerative lumbar kyphosis (DLK) patients using magnetic resonance imaging and computed tomography scanning. SUMMARY OF BACKGROUND DATA: Although the pathophysiology of DLK is not completely understood, extensive degeneration and weakness of the lumbar extensor muscles are thought to underlie the condition in most patients. However, there is no ideal metho
The trend of excellent radiologic outcome was observed for IP≥CP>CA. Plating may play a key role in the support of anterior height. As a result, plating prevents segmental kyphosis and subsidence and promotes bone fusion. Although the overall clinical outcomes were not different among the 3 groups, except for arm pain, more favorable trends regarding clinical outcome were observed for CP≥IP>CA.
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The results suggest that the loss of cervical ROM is time-dependent and plateaus by 18 months after surgery, with no further decreases thereafter.
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BACKGROUND: Despite the firmly established occupational risk of exposure to X-rays, they are used extensively in spine surgeries. Shielding by lead aprons is the most common protective practice. We quantified the level of their radiation blocking ability in a real-life setting. METHODS: Single-center, prospective, randomized study of adult patients with degenerative lumbar disorders, scheduled to undergo posterior lumbar interbody fusion. Instrumentation was performed in either a robot-assisted,