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흉요추 이행부 파열 골절시 전측방 진입법에 의한 기구 고정 및 골융합
유찬종,강동수,정환영,김영보,안성기,박철완,이언 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.6
Between March 1994 and March 1995, 10 patients with thoracolumbar burst fractures underwent a one- stage operation consisting of anterior decompression, reduction, bony fusion with iliac bone and stabilization with Kaneda device. The mean fellow-up was 6.4 Months. Most patients with incomplete neurologic lesions showed postoperative improvement and were upgraded one or two steps in the Frankel scale. No patient showed neurological deterioration after surgery. Loss of reduction was 5.5 degree during follow-up period. Anterior decompression and strut fusion was used to effectively recover the neurological deficit and reduce the pain in a thoraco-lumbar burst fracture.
모니터링 및 수치모의를 이용한 하상변동분석- 세종보 상류를 중심으로 -
김하룡,유인상,유찬종,정상만 한국방재학회 2012 한국방재학회 학술발표대회논문집 Vol.11 No.-
세종보 상류 전 구간에 발생한 토사 퇴적으로 인해 수문운영에 지장을 초래하는 등 문제점이 발생하고 있어 준설 및 저층수 차단 등 하상 안정화를 위한 다양한 방법들이 적용되었으나 그 효과가 미흡한 실정이다. 이는 세종보 상류 구간에 하상변동특성을 감안하지 않은 획일적이고 단기적인 해결책을 적용하였기 때문으로 세종보 상류 구간의 하상변동에 대한 연구가 필요하다. 따라서 본 연구에서는 세종보 상류 약 600m 구간에 대해 홍수기 전·후로 구분하여 하상변동 모니터링을 실시하여 하상의 변화를 측정하였으며 2차원 수치모형을 이용하여 흐름특성 및 하상변동을 모의하고 실측한 모니터링 결과와 비교하여 보 상류의 하상변동을 분석하였다. 모니터링 결과 세종보 상류 모니터링 구간에서 169,263m3의 토사가 퇴적되었으며 토사의 퇴적은 우안에 집중적으로 발생하였다. 상류부 전체적으로 퇴적 경향을 보였으나 가동보 수문 개도시 빠른 유속의 영향으로 보 직상류의 토사 퇴적은 적은 것으로 측정되었다. RMA2를 이용하여 흐름특성을 모의한 결과 우안은 오목한 지형적 특징으로 인해 유속이 낮게 모의되었으며 수문 개도에 따라 유속의 분포도 바뀌는 것으로 분석되었다. SED-2D를 이용한 하상변동 모의 결과 수문개도 방법에 상관없이 우안이 퇴적되는 것으로 모의되었으며 이는 지형적 특징으로 인한 우안의 낮은 유속에 기인한 것으로 분석되었다. 모니터링 및 수치모의 결과 세종보 상류는 전체적으로 퇴적되고 있으며 특히 우안의 낮은 유속으로 인해 퇴적 현상은 우안에 집중되고 있으므로 해결책이 필요하다.
환추-축추 불안정성에 있어서 후방 경관절 나사못 고정술에 대한 수술적 경험
차승규,유찬종,Cha, Seung Kyu,You, Chan Jong 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.1
Objective : Posterior transarticular screw fixation is known to be one of the best surgical method for the atlantoaxial instability. We assessed the complication and operative risk in 15 patients. Patients and Methods : Between January 1997 and April 1998, 15 patients suffering from this condition were admitted to our institution. Atlantoaxial instability was caused by C1 or C2 fractures in 11, rheumatoid arthritis in 2, and os odontoideum in 2. This technique was used in the treatment of 13 patients and 2 patients was used in sublaminar wire fixation only. Bilateral C1-C2 screws were placed in 11 patients ; 2 patients had only one screw placed becauce of an anomalous vertebral artery and axial destruction. Follow-up period ranged from 5 to 20 months. Results : Most screws were positioned satisfactorily. One screw was malpositioned. No patients had neurological complications. Conclusion : Rigidly fixating C1-C2 instability with transarticular screws showed a significantly higher fusion rate than that achieved using wired grafts alone. The risk of screw malpositioning and catastrophic vascular or neural injury is small and can be minimized by assessing the position of the transverse foramen on preoperative computed tomographic scans and by correctly using intraoperative fluoroscopy and surgeon's precaution.
본태성 수전증과 파킨슨병 환자에서 미토콘드리아 DNA 비교 분석
김래상,유찬종,이상구,김우경,한기수,김영보,박철완,이언,Kim, Rae Sang,Yoo, Chan Jong,Lee, Sang-Gu,Kim, Woo-Kyung,Han, Ki-Soo,Kim, Young-Bo,Park, Cheol-Wan,Lee, Uhn 대한신경외과학회 2000 Journal of Korean neurosurgical society Vol.29 No.11
Essential tremor(ET) is the most common movement disorder however there has been little agreement in the neurologic literature regarding diagnostic criteria for ET. Familial ET is an autosomal dominant disorder presenting as an isolated postural tremor. The main feature of ET is postural tremor of the arms with later involvement of the head, voice, or legs. In previous studies, it was reported that ET susceptibility was inherited in an autosomal dominant inheritance. As with previous results, it would suggest that ET might be associated with defect of mitochondrial or nuclear DNA. Recent studies are focusing molecular genetic detection of movement disorders, such as essential tremor and restless legs syndrome. Parkinson's disease(PD) is a neurodegenerative disease involving mainly the loss of dopaminergic neurons in substantia nigra by several factors. The cause of dopaminergic cell death is unknown. Recently, it has been suggested that Parkinson's disease many result from mitochondrial dysfunction. The authors have analysed mitochondrial DNA(mtDNA) from the blood cell of PD and ET patients via long and accurate polymerase chain reaction(LA PCR). Blood samples were collected from 9 PD and 9 ET patients. Total DNA was extracted twice with phenol followed by chloroform : isoamylalcohol. For the analysis of mtDNA, LA PCR was performed by mitochondrial specific primers. With LA PCR, 1/3 16s rRNA~1/3 ATPase 6/8 and COI~3/4 ND5 regions were observed in different patterns. But, in the COI~1/3 ATPase 6/8 region, the data of PCR were observed in same pattern. This study supports the data that ET and PD are genentic disorders with deficiency of mitochondrial DNA multicomplexes.