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Surgical Impacts of Metastatic Nonsmall Cell Lung Cancer to the Thoracic and Lumbar Spine

Jung Jm, Hyun SJ, Kim KJ

Background: Surgery for spinal metastasis is rapidly increasing in frequency with procedures ranging from laminectomy to spondylectomy combined with stabilization. This study investigated the effect of various surgical procedures for...
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Bicortical Screw Purchase at Upper Instrumented Vertebra (UIV) Can Cause UIV Fracture After Adult Spinal Deformity Surgery: A Finite Element Analysis Study

Wui SH, Hyun SJ, Kang B, Kim KJ, Jahng TA, Kim HJ

Objective: To examine the biomechanical stress distribution at the upper instrumented vertebra (UIV) according to unicortical- and bicortical purchase model by finite element analysis (FEA). Methods: A T8 to Sacrum with...
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Changes in Thoracic Kyphosis and Thoracolumbar Kyphosis in Asymptomatic Korean Male Subjects Aged >50 Years: Do They Progress Above T5, T10, T12, or L2?

Park JH, Kim YB, Hyun SJ, Kang KB, Park PS

Study Design: Retrospective analysis of prospectively collected data. Purpose: To evaluate the natural progression of segmental kyphosis in thoracic and thoracolumbar spine with advancing age. Overview of Literature: To our knowledge, the...
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Radiographic and Clinical Outcomes Following Pedicle Subtraction Osteotomy : Minimum 2-Year Follow-Up Data

Choi HY, Hyun SJ, Kim KJ, Jahng TA, Kim HJ

Objective : The purpose of this study was to report the results of pedicle subtraction osteotomy (PSO) for fixed sagittal imbalance with a minimum 2-year follow-up. Besides, authors evaluated the...
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Trends in Incidence and Treatment of Herniated Lumbar Disc in Republic of Korea : A Nationwide Database Study

Jung Jm, Lee SU, Hyun SJ, Kim KJ, Jahng TA, Oh CW, Kim HJ

Objective : This study aimed to determine the incidence and analyze trends of the herniated lumbar disc (HLD) based on a national database in the Republic of Korea (ROK) from...
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Surgical Outcomes According to Dekyphosis in Patients with Ossification of the Posterior Longitudinal Ligament in the Thoracic Spine

Kim SY, Hyun SJ, Kim KJ, Jahng TA

Objective : Ossification of posterior longitudinal ligament (OPLL) in the thoracic spine may cause chronic compressive myelopathy that is usually progressive, and unfavorable by conservative treatment. Although surgical intervention is...
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Epidemiology of C5 Palsy after Cervical Spine Surgery: a 21-Center Study

Oh JK, Hong JT, Kang DH, Kim SW, Kim SW, Kim YJ, Chung CK, Shin JJ, Yi S, Lee JK, Lee JH, Lee CH, Lee HJ, Chun HJ, Cho DC, Cho YE, Jin YJ, Choi KC, Han IH, Hyun SJ, Hur JW, Kim KJ

OBJECTIVE: C5 palsy is a severe complication after cervical spine surgery, the pathophysiology of which remains unclear. This multicenter study investigated the incidence of C5 palsy following cervical spine surgery...
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Let's Not Miss the Forest for the Trees

Hyun SJ

No abstract available.
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Analysis of Sleep Questionnaires of Commercial Vehicle Operators in Korea

Song Y, Park HG, Song S, Lee DH, Huh G, Hyun SJ, Choe G, Han SA, Ji JY, Kim JK, Kim HJ

BACKGROUND AND OBJECTIVES: Obstructive sleep apnea (OSA) is highly prevalent in commercial vehicle operators (CMVOs). This study aimed to evaluate the poor sleep quality, daytime sleepiness, and the prevalence of...
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Clinical Efficacy of Intra-Operative Cell Salvage System in Major Spinal Deformity Surgery

Choi HY, Hyun SJ, Kim KJ, Jahng TA, Kim HJ

OBJECTIVE: The purpose of this study was to determine the efficacy of intra-operative cell salvage system (ICS) to decrease the need for allogeneic transfusions in patients undergoing major spinal deformity...
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Two-Track Medical Treatment Strategy According to the Clinical Scoring System for Chronic Rhinosinusitis

Kim DK, Kang SI, Kong IG, Cho YH, Song SK, Hyun SJ, Cho SD, Han SY, Cho SH, Kim DW

PURPOSE: The previously reported Japanese clinical scoring study (JESREC) suggests that chronic rhinosinusitis (CRS) can be divided into 4 subtypes according to the degree of eosinophilic CRS (ECRS) and offers...
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Clinical and Radiological Outcomes of Posterior Vertebral Column Resection for Severe Spinal Deformities

Lee BH, Hyun SJ, Kim KJ, Jahng TA, Kim YJ, Kim HJ

OBJECTIVE: The aim of this study was to investigate clinical and radiological outcomes of patients who underwent posterior vertebral column resection (PVCR) by a single neurosurgeon in a single institution. METHODS:...
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Restoration of Sagittal Balance in Spinal Deformity Surgery

Makhni MC, Shillingford JN, Laratta JL, Hyun SJ, Kim YJ

The prevalence of patients with adult spinal deformity (ASD) has been reported as high as 68%. ASD often leads to significant pain and disability. Recent emphasis has been placed on...
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Total Deformity Angular Ratio as a Risk Factor for Complications after Posterior Vertebral Column Resection Surgery

Lee BH, Hyun SJ, Han S, Jeon SI, Kim KJ, Jahng TA, Kim HJ

OBJECTIVE: The aim of the present study was to identify whether the deformity angular ratio (DAR) influences the occurrence of complications after posterior vertebral column resection (PVCR) and to establish...
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Spinal Deformity Surgery : It Becomes an Essential Part of Neurosurgery

Hyun SJ, Jung JM

Among the spinal disorders, the treatment approach for spinal deformities has been discussed least among department of neurosurgery. But nowadays, more and more neurosurgeons are interested in spinal deformities as...
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Freehand S2 Alar-Iliac Screw Placement Using K-Wire and Cannulated Screw: Technical Case Series

Choi HY, Hyun SJ, Kim KJ, Jahng TA, Kim HJ

OBJECTIVE: Among the various sacropelvic fixation methods, S2 alar-iliac (S2AI) screw fixation has several advantages compared to conventional iliac wing screw. However, the placement of S2AI screw still remains a...
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Single Stage Posterior Approach for Total Resection of Presacral Giant Schwannoma: A Technical Case Report

Lee BH, Hyun SJ, Park JH, Kim KJ

The neurogenic tumor of frequent occurrence in the presacral area is a schwannoma. Giant presacral schwannoma has a risk for anterior surgical approach because of its massive size and proximity...
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Pyogenic Vertebral Osteomyelitis: Clinical Features, Diagnosis, and Treatment

Kwon JW, Hyun SJ, Han SH, Kim KJ, Jahng TA

Pyogenic vertebral osteomyelitis (PVO) may result in neurological deficits and sequelae, so early diagnosis and appropriate treatment are critical. Many previous studies on PVO exist, but our paper has aimed...
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Venous Infarction of Developmental Venous Anomaly: A Case Report with Perfusion Imaging

Kim JY, Kim HJ, Kim ES, Hyun SJ, Kim HY, Kim HM, Hwang JY, Hong HS, Woo JY, Yang I

Developmental venous anomaly (DVA) is a common congenital venous malformation characterized by dilated medullary veins in caput medusa configuration and a draining vein. Despite the high incidence of DVAs, they...
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Various MRI Findings of Spinal Ependymoma

Shin YJ, Lee E, Lee JW, Kang Y, Hyun SJ, Kim KJ, Jahng TA, Kim HJ, Kang HS

PURPOSE: To present the typical and atypical magnetic resonance image (MRI) findings of intramedullary spinal ependymomas, and compare these findings with pathological subtypes. MATERIALS AND METHODS: Between January 2003 to November...
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