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Journal of Korean Neurosurgical Society

Miki Fujimura, Teiji Tominaga
Moyamoya disease (MMD) is a progressive cerebrovascular disease with unknown etiology, characterized by bilateral stenoocclusive changes at the terminal portion of the internal carotid artery and an abnormal vascular network formation at the base of the brain. MMD has an intrinsic nature to convert the vascular supply for the brain from internal carotid (IC) system to the external carotid (EC) system, as indicated by Suzuki's angiographic staging. Insufficiency of this 'IC-EC conversion system' could result not only in cerebral ischemia, but also in intracranial hemorrhage from inadequate collateral anastomosis, both of which represent the clinical manifestation of MMD...
November 15, 2018: Journal of Korean Neurosurgical Society
Rodrigo Carrasco-Moro, Inés Castro-Dufourny, Ruth Prieto, José M Pascual
No abstract text is available yet for this article.
November 2018: Journal of Korean Neurosurgical Society
June Ho Choi, Jung-Ki Ha, Chung Hwan Kim, Jin Hoon Park
Three male patients diagnosed with surfer's myelopathy (19-30 years) were admitted to our hospital. All three patients were novice surfers showing a typical clinical course of rapid progression of paraplegia following the onset of back pain. Typical history and magnetic resonance imaging features indicated the diagnosis of surfer's myelopathy. Two patients received high-dose steroid therapy and the other was treated with induced hypertension. One patient treated with induced hypertension showed almost full recovery; however, two patients who received high-dose steroid therapy remained completely paraplegic and required catheterization for bladder and bowel dysfunction despite months of rehabilitation...
November 2018: Journal of Korean Neurosurgical Society
Kyoung Jun Yoon, Byungchul Cho, Jung Won Kwak, Doheui Lee, Do Hoon Kwon, Seung Do Ahn, Sang-Wook Lee, Chang Jin Kim, Sung Woo Roh, Young Hyun Cho
OBJECTIVE: We investigated the effect of optimization in dose-limiting shell method on the dosimetric quality of CyberKnife (CK) plans in treating brain metastases (BMs). METHODS: We selected 19 BMs previously treated using CK between 2014 and 2015. The original CK plans (CKoriginal) had been produced using 1 to 3 dose-limiting shells : one at the prescription isodose level (PIDL) for dose conformity and the others at lowisodose levels (10-30% of prescription dose) for dose spillage...
November 2018: Journal of Korean Neurosurgical Society
Jun-Ki Kim, Sang-Bok Lee, Seo-Yeon Yang
OBJECTIVE: The purpose of this study was to compare the cosmetic outcome and complications after cranioplasty (CP) due to three different implant materials, and analyze the mean implant survival and cumulative survival rate based on these results. METHODS: We reviewed 108 patients retrospectively who underwent CP between January 2014 and November 2016. Autologous bone (AB; 45 patients) and synthetic materials with porous polyethylene (PP; 32 patients) and custom-made 3-dimensional printed titanium mesh (CT; 31 patients) were used as implants...
November 2018: Journal of Korean Neurosurgical Society
Kiyasettin Asil, Mahizer Yaldiz
OBJECTIVE: Ultrasonography (US) is the most non-invasive, safe, and, especially in the period of infancy, best method for visualizing and examining the spinal cord. Furthermore, US is the primary work-up for development of the spinal canal, and for follow-up on issues relating to subcutaneous tissues, bone development, and the spinal cord. Conus medullaris terminates at the second lumbar vertebra, according to a consensus in the literature. METHODS: Healthy children under the age of 6 months who were admitted to the radiology clinic for routine USG follow-ups between the dates of March 2012 to December 2014 were included in this study...
November 2018: Journal of Korean Neurosurgical Society
Byoung Hun Lee, Seung-Jae Hyun, Sanghyun Han, Se-Il Jeon, Ki-Jeong Kim, Tae-Ahn Jahng, Hyun-Jib Kim
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 the DAR cut-off value. METHODS: Thirty-six consecutive patients undergoing PVCR from December 2010 to October 2016 were reviewed. The relationships between the total, sagittal, and coronal DAR and complications were assessed using receiver operator characteristics curves...
November 2018: Journal of Korean Neurosurgical Society
Seung Won Choi, Christopher Ames, Sigurd Berven, Dean Chou, Bobby Tay, Vedat Deviren
OBJECTIVE: Lateral interbody fusion (LIF) is attractive as a less invasive technique to address anterior spinal pathology in the treatment of adult spinal deformity. Its own uses and benefits in treatment of adult degenerative scoliosis are undefined. To investigate the radiographic and clinical outcomes of LIF, and staged LIF and posterior spinal fusion (PSF) for the treatment of adult degenerative scoliosis patients, we analyzed radiographic and clinical outcomes of adult degenerative scoliosis patients who underwent LIF and posterior spinal fusion...
November 2018: Journal of Korean Neurosurgical Society
Ui Yun Lee, Jinmu Jung, Hyo Sung Kwak, Dong Hwan Lee, Gyung Ho Chung, Jung Soo Park, Eun Jeong Koh
OBJECTIVE: The goal of this study was to compare several parameters, including wall shear stress (WSS) and flow pattern, between unruptured and ruptured anterior communicating artery (ACoA) aneurysms using patient-specific aneurysm geometry. METHODS: In total, 18 unruptured and 24 ruptured aneurysms were analyzed using computational fluid dynamics (CFD) models. Minimal, average, and maximal wall shear stress were calculated based on CFD simulations. Aneurysm height, ostium diameter, aspect ratio, and area of aneurysm were measured...
November 2018: Journal of Korean Neurosurgical Society
Francesco Costa, Claudia Ottardi, David Volkheimer, Alessandro Ortolina, Tito Bassani, Hans-Joachim Wilke, Fabio Galbusera
OBJECTIVE: To mitigate the risk of iatrogenic instability, new posterior decompression techniques able to preserve musculoskeletal structures have been introduced but never extensively investigated from a biomechanical point of view. This study was aimed to investigate the impact on spinal flexibility caused by a unilateral laminotomy for bilateral decompression, in comparison to the intact condition and a laminectomy with preservation of a bony bridge at the vertebral arch. Secondary aims were to investigate the biomechanical effects of two-level decompression and the quantification of the restoration of stability after posterior fixation...
November 2018: Journal of Korean Neurosurgical Society
Dalsung Ryu, Byung-Hak Yoon, Chang-Hyun Oh, Moon-Hang Kim, Ji-Yong Kim, Seung Hwan Yoon, Senyon Choe
OBJECTIVE: To compare the spinal bone fusion properties of activin A/BMP2 chimera (AB204) with recombinant human bone morphogenetic protein (rhBMP2) using a rat posterolateral spinal fusion model. METHODS: The study was designed to compare the effects and property at different dosages of AB204 and rhBMP2 on spinal bone fusion. Sixty-one male Sprague-Dawley rats underwent posterolateral lumbar spinal fusion using one of nine treatments during the study, that is, sham; osteon only; 3...
November 2018: Journal of Korean Neurosurgical Society
Seung-Jae Hyun, Jong-Myung Jung
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 well as complex spinal disorders and are doing not a few surgeries for these kinds of disease. Nevertheless, it is mandatory to understand the course of spinal deformity, principles of treatment, and surgical outcomes and complications. Understanding of the biology, biomechanics and metallurgy of the spine and instrumentation are also required for successful spinal deformity surgery...
November 2018: Journal of Korean Neurosurgical Society
Jing-Nan Chen, Wen-Hua Yu, Hang-Gen Du, Li Jiang, Xiao-Qiao Dong, Jie Cao
OBJECTIVE: To prospectively compare facial pain outcomes for patients having either a repeat microvascular decompression (MVD) or percutaneous balloon compression (PBC) as their surgery for trigeminal neuralgia (TN) recurrence. METHODS: Prospective cohort study of 110 patients with TN recurrence who had either redo MVD (n=68) or PBC (n=42) from July 2010 until September 2016. The mean follow-up was 45.6 months. RESULTS: After redo MVD, 65 patients (95...
November 2018: Journal of Korean Neurosurgical Society
Won Jae Lee, Taek Min Nam, Kyung-Il Jo, Je Young Yeon, Seung-Chyul Hong, Jong-Soo Kim
OBJECTIVE: Chronic subdural hematoma (CSDH) is a rare complication of unruptured intracranial aneurysm (UIA) clipping surgery. To prevent postoperative CSDH by reducing subdural fluid collection, we applied the modified arachnoid plasty (MAP) during the UIA clipping surgery to seal the dissected arachnoid plane. METHODS: This retrospective study included 286 patients enrolled from July 2012 to May 2015. We performed arachnoid plasty in all patients, with MAP used after June 17, 2014...
November 2018: Journal of Korean Neurosurgical Society
Ihab Zidan, Ahmed Abdelaziz Fayed, Amr Elwany
OBJECTIVE: Percutaneous vertebroplasty (PV) is a minimally invasive procedure designed to treat various spinal pathologies. The maximum number of levels to be injected at one setting is still debatable. This study was done to evaluate the usefulness and safety of multilevel PV (more than three vertebrae) in management of osteoporotic fractures. METHODS: This prospective study was carried out on consecutive 40 patients with osteoporotic fractures who had been operated for multilevel PV (more than three levels)...
November 2018: Journal of Korean Neurosurgical Society
Chunneng Huang, Zhengkuan Xu, Fangcai Li, Qixin Chen
OBJECTIVE: To investigate the potential risk of approach-related complications at different access angles in minimally invasive lateral lumbar interbody fusion. METHODS: Eighty-six axial magnetic resonance images were obtained to analyze the risk of approach-related complications. The access corridor were simulated at different access angles and the potential risk of neurovascular structure injury was evaluated when the access corridor touching or overlapping the corresponding structures at each angle...
November 2018: Journal of Korean Neurosurgical Society
Tae Seok Jeong, Gi Taek Yee
OBJECTIVE: This study aimed to investigate the rates, types, and risk factors of surgical site infection (SSI) following intracranial neurosurgical procedures evaluated by a Korean SSI surveillance system. METHODS: This was a prospective observational study of patients who underwent neurosurgical procedures at 29 hospitals in South Korea from January 2017 to June 2017. The procedures included craniectomy, craniotomy, cranioplasty, burr hole, and ventriculoperitoneal shunt...
September 2018: Journal of Korean Neurosurgical Society
Yoon Hwan Byun, Ho Shin Gwak, Ji-Woong Kwon, Kwang Gi Kim, Sang Hoon Shin, Seung Hoon Lee, Heon Yoo
OBJECTIVE: The purpose of this pilot study was to examine the safety and function of the newly developed cerebrospinal fluid (CSF) reservoir called the V-Port. METHODS: The newly developed V-Port consists of a non-collapsible reservoir outlined with a titanium cage and a connector for the ventricular catheter to be assembled. It is designed to be better palpated and more durable to multiple punctures than the Ommaya reservoir. A total of nine patients diagnosed with leptomeningeal carcinomatosis were selected for V-Port insertion...
September 2018: Journal of Korean Neurosurgical Society
In-Ho Jung, Kyeong-Wook Yoon, Young-Jin Kim, Sang Koo Lee
OBJECTIVE: Because the anatomical structure of the brachial plexus is very complex, surgical treatment of tumors in this region is challenging. Therefore, a lot of clinical and surgical experience is required for successful treatment; however, many neurosurgeons have difficulty accumulating this experience owing to the rarity of brachial plexus tumors. The purpose of this report is to share our surgical experience with brachial plexus tumor with other neurosurgeons. METHODS: The records of 18 consecutive patients with brachial plexus tumors who underwent surgical treatment between January 2010 and December 2017 in a single institution were retrospectively reviewed...
September 2018: Journal of Korean Neurosurgical Society
Il-Jung Park, Hyoung-Min Kim, Jae-Young Lee, Changhoon Jeong, Younghoon Kang, Sunwook Hwang, Byung-Yoon Sung, Soo-Hwan Kang
OBJECTIVE: We evaluated the clinical manifestation and surgical results following operative treatment of cubital tunnel syndrome (CuTS) caused by anconeus epitrochlearis (AE) muscle. METHODS: Among 142 patients who underwent surgery for CuTS from November 2007 to October 2015, 12 were assigned to the AE group based on discovery of AE muscle; 130 patients were assigned to the other group. We analyzed retrospectively; age, sex, dominant hand, symptom duration, and weakness in hand...
September 2018: Journal of Korean Neurosurgical Society
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