요천추부 신경근의 체온절

김영수,조용은,장호열 대한신경외과학회 1995 Journal of Korean neurosurgical society Vol.24 No.1

Thermography shows the skin temperature changes in various conditions of the body. The skin temperature varies according to subcutaneous blood flow under the control of autonomic nervous system Lumbar radiculopathy due to disc herniation makes difference in the temperature of lower extremities caused by the changes in general function and autonomic functions of the nerve root. Digital infrared thermographic imaging(DITI) system has been used to diagnose radiculopathy without any hazards or discomforts and shows the pain due to LDH by objective change of temperature. This study has used DITIs of 55 control cases and 217 cases of LDH patients and analysed it statistically. In the room of temperature stable at 20℃, the temperature distribution of the lower extremities of the control cases ranged from 24.9℃ to 29.9℃. The significant minimal temperature difference between right and left lower extremities range from 0.1℃ to 0.4℃. The more distal, the greater the temperature difference was. The thermatome of L4. L5 and S1 was drawn in radiating type and spot type. The thermatome showed larger area than the sensory dermatome and sympathetic dermatome. There was significant increase or decrease of temperature in thermatome in LDH patients. In conclusion, preoperative DITI of the LDH patient can be helpful for diagnosing the level do LDH and the areas of pain.

척추 압박골절의 체위를 이용한 정복술

윤승환,김근수,장호열,김영수 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.7

12l patients with cervical(45 patients). thoracolumbar(76 patients) compression or mild burst fractures from January 1984 to December 1994 were studied : 98 patients were treated postural reduction with hyperextension posture and 23 patients were with postural reduction and surgical methods We compared the initial and post-reduction compression height ratio. wedge angls and kyphosis angle of compression fractures The results were not only expansion of a compressed vertebral body but also successful fusion. The neurological recovery status according to Frankei classification was also improved after postural reduction. Most of the compression fractures or stable burst fractures of the cervical. thoracolumbar spines can be restored by the postural reduction

척수내 유피종을 동반한 흉추부의 선천성 피부동 : 증례보고 Case Report

은종필,정남,권창영,장호열 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.4

Congenital dermal sinus(CDS) is a rare entity widely known to occur as a result of the of the failure of the neuroectoderm to separate from the cutaneous ectoderm during the process of neurulation at the third to fifth week of gestation. The lesion can occur at any level of the craniospinal axis. but are located predominantly at the lumbosacral and occipital legion CDS of thoracic region and cervical region are rare The patient with CDS presents with meningitis and/or mass effect from the associated inclusion tumor They ars usually dermoid or epidermoid cyst. Teratoma is rarely associated with CDS. We report our experience of CDS in an 11-month old boy associated with an lntramedullary dermoid tumor at the thoracic region and together we report a review of the literature.

Expandable Cage for Cervical Spine Reconstruction

Zhang, Ho-Yeol,Thongtrangan, Issada,Le, Hoang,Park, Jon,Kim, Daniel H. The Korean Neurosurgical Society 2005 Journal of Korean neurosurgical society Vol.38 No.6

Objective : Expandable cage used for spinal reconstruction after corpectomy has several advantages over nonexpendable cages. Here we present our clinical experience with the use of this cage after anterior column corpectomy with an average of one year follow up. Methods : Ten patients underwent expandable cage reconstruction of the anterior column after single-level or multilevel corpectomy for various cervical spinal disorders. Anterior plating with or without additional posterior instrumentation were performed in all patients. Functional outcomes, complications, and radiographic outcomes were determined. Results : There was no cage-related complication. Functionally, neurological examination revealed improvement in 7 of 10 patients and no patient had neurological deterioration after the surgery. Immediate stability was achieved and maintained throughout the period of follow-up. There was minimal subsidence [<2mm] noticeable in three of the cases that underwent a two-level corpectomy. Subsidence was noted in osteoporotic patients and patients undergoing multi-level corpectomies. Average pre-operative kyphotic angle was 9 degrees. This was corrected to an average of 5.4 degrees in lordosis postoperatively. Conclusion : In conclusion, expandable cages are safe and effective devices for vertebral body replacement after cervical corpectomy when used in combination with anterior plating with or without additional posterior stabilization. The advantages of using expandable cages include its ability to easily accommodate itself into the corpectomy defect, its ability to tightly purchase into the end plates after expansion and thus minimizing the potential for migration, and finally, its ability to correct kyphosis deformity via its in vivo expansion properties.

The BioFlex System as a Dynamic Stabilization Device : Does It Preserve Lumbar Motion?

Zhang, Ho-Yeol,Park, Jeong-Yoon,Cho, Bo-Young The Korean Neurosurgical Society 2009 Journal of Korean neurosurgical society Vol.46 No.5

Objective : This study examines whether functional motion is present at one or more years after Bioflex System placement. BioFlex System is a flexible rod system which has been used to preserve motion at the area of implantation. There has not been a scientific study showing how much motion is preserved after implantation. Methods : A total of 12 consecutive patients underwent posterior dynamic stabilization using the BioFlex System. Six patients were treated using a L3-4-5 construct and other six patients using a L4-5-S1 construct. Follow-up ranged from 12 to 33 months and standing neutral lateral, extension, flexion and posteroanterior (PA) radiographs were obtained at 3, 6, 9, and 12 months and at more than 12 months postoperatively. Range of motion (ROM), whole lumbar lordosis, and ROMs of motion segments from L2 to S1 were determined. Results : Patients with a L3-4-5 construct demonstrated a decrease in mean ROM for whole lumbar decreased from 40.08 to 30.77. Mean ROM for L3-4 (6.12 to 2.20) and L4-5 (6.55 to 1.67) also decreased after one year. Patients with a L4-5-S1 construct demonstrated L4-5 (8.75 to 2.70) and L5-S1 (9.97 to 3.25) decrease of mean ROM at one year postoperatively. Lumbar lordosis was preservep at both L3-4-5 and L4-5-S1 constructs. Clinical results showed significant improvements in both study groups. Conclusion : The present study provides preliminary information regarding the BioFlex motion preservation system. We conclude that the BioFlex System preserves functional motion to some degree at instrumented levels. However, although total lumbar lordosis was preserved, ROMs at implantation segments were lower than preoperative values.

Risk prediction for malignant conversion of oral epithelial dysplasia by hypoxia related protein expression

Zhang, Xianglan,Han, Seonhui,Han, Hye-Yeon,Heon Ryu, Mi,Kim, Ki-Yeol,Choi, Eun-Joo,Cha, In-Ho,Kim, Jin Elsevier 2013 Pathology Vol.45 No.5

터키안 상부 배아 세포성 종양의 임상경험

장호열,최중언,정상섭,이규창 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.12

The germ cell tumors are classified to germinoma, immature teratoma, mature teratoma, choriocarcinoma, yolk sac tumor and embryonal carcinoma. We analzyed 10 cases of suprasellar germ cell tumors which had been treated at Yonsei University Hospital from 1980 to 1990. Results of our study were summurized as follows : Common clinical symptoms are diabetes insipidus, visual dysfunction, panhypopituitarism, etc. Therapeutic plan can be based on serum and CSF AFP and HCG level. Pretreatment and posttreatment hormonal evaluation wer performed and hormonal replacement were required in all patients. Germinoma showed good outcome but immature teratoma showed bad outcome by multisystem involvement. More advanced new chemotherapeutic and immunotherapeutic agents must be studied for this tumor.

강직성 척추염과 동반된 경수손상 환자의 치료 경험 : 증례보고 Case Report

장호열,조용은,윤도흠,오성훈,박형천,김영수 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.12

A case of cervical cord injury with neurological deficit in patient with ankylosing spondylitis is presented. Ankylosing spondylitis causes a high incidence of spinal cord injury with a minor trauma and at that time inital treatments and combined complications are quite different from other spinal cord injuries. We discuss the treament and complications of spinal cord injury in ankylsing spondylitis with literatures review.

요추간반 탈출증에서 적외선 체열 촬영과 통증 척도와의 상관 관계

장호열,진동규,조용은,김영수 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.2

Effect of Manganese Addition on Hydrogen Storage Performance of Vanadium-Based BCC Hydrogen Storage Alloys

Seo, Chan-Yeol,Zhang, Zhao-Liang,Kim, Jin-Ho,Lee, Paul S.,Lee, Jai-Young 대한금속학회 2002 METALS AND MATERIALS International Vol.8 No.4

The effect of manganese addition on hydrogen storage performance of vanadium-based BCC alloys was investigated by measuring mainly pressure-composition (P-C) isotherms at 303K. Annealing heat-treatment was also considered in selected cases. The XRD patterns showed BCC single phase in all the alloys. With increasing Mn content, the lattice parameters decreased linearly, thus resulting in an increase in plateau pressure and a reverse effect on maximum hydrogen storage capacity. However, an effective hydrogen storage capacity as high as 1.92 wt.% was achieved at x = 0.075. V-Ti-Mn alloys showed a surprisingly flat desorption plateau, but lots of absorbed hydrogen cannot desorb at ambient temperature. Although V_0.44 Ti_0.20 Cr_0.12 Mn_0.12 Fe_0.12 alloy did not show the first plateau, both the maximum and effective hydrogen storage capacities were very low.