INTRODUCTION: The fixation strength of transpedicular screw system in the vertebral hody relied on bone quality and anatomical characteristics of vertebral pedicle, designs of screw and types of connection(rod or plate) with screw. The purpose of this study is to verify the biomechanical nature of the transpedicular fixation in spine under various conditions with porcine vertebrae. MATERIAL AND METHOD: Fresh porcine vertebrae and the custom-made screws were used in this experiment. To reduce the errors caused by vertebral bodies of different size and quality, vertebral bodies having regular range of pedicular width(10.0 to 11.5mm) and hone density(more than 1.0 gm/cm2) were used. The pedicle screws were inserted in the same procedure and axial pull out test was performed with using the Material Testing System(lntron8511, Canton, USA). The experiments were performed in four types to assess the difference of strength accroding to designs of the screw hy using two group of screws. The first group of screw was designed according to the outer and inner diameter and the second group was designed according to the shape, pitch, and thread profile of screw. Experiment I was perfomed to evaluate the effect of screw diameters on the biomechanical pull-out strength hy using the first group of custom-made pedicle screw which fixed all other factors except the diameter of screw. Experiment I was to verify the effect of screw shape, experiment III to verify the effect of pitch and experiment IV to verify the effect of thread profile. RESULTS: The results of experiments were summarized as follows: Experiment I showed that the screw of larger outer diameter had greater holding strength. Experiment II showed that the holding strength of cylindrical shaped screw is superior to that of conical shaped screw. Experiment III showed that there is no statistical significance between different modes of pitch. Experiment IV showed that the holding strength of buttress shape of thread profile is superior to that of V-shape. CONCLUSION: It seemed that the fixation strength of the screw was more powerful with 1 mm increment of outer diameter in 4-7mm of outer diameter, 3mm of pitch and buttress shape of thread of the screw with the same operation technique.
Spine

Benign symmetric lipomat,osis is a rare disease of undetermined cause characterized by symmetric deposits of adipose tissue o:n the neck, upper trunk and abdomen. We report three cases of kienign symmetric lipomatosis, one of which is associated with alcoholic liver disease and the patient complained of a diffieulties in neck motion, All of them are about sixty year old men with history of frequent alcohol consumption. In histopathologic findings, the reticular dermis was completcly replaced by mature fat cells and there was a slight increase in vascular and fibrous elements.
Abdomen ; Adipocytes ; Adipose Tissue ; Alcohol Drinking ; Dermis ; Humans ; Lipomatosis* ; Liver Diseases, Alcoholic ; Male ; Neck ; Rare Diseases

No abstract available.
Appendicitis* ; Pregnancy*

PURPOSE: To report the first domestic case of choroidal neovascularization in a choroideremia patient treated with intravitreal bevacizumab injection. CASE SUMMARY: A 29-year-old male presented with a sudden decline in vision in the left eye. Fundus examination revealed areas of choriocapillaries and retinal pigment epithelium atrophy with macular hemorrhage. Fluorescein angiogram revealed vascular hyperfluorescence in the juxtafoveal area. Neurosensory detachment around the macula and increased central macular thickness was also observed using optical coherence tomography. Upon the diagnosis of choroideremia with choroidal neovascularization, the patient was treated with 1.25 mg intravitreal bevacizumab. Visual acuity improved after four injections of intravitreal Bevacizumab with improvement in both detachment and fluorescein leakage. CONCLUSIONS: In patients with choroideremia presenting sudden decline in vision, ophthalmologists should detect for possible choroidal neovascularization. The results from the present study show that judicious use of intravitreal Bevacizumab may be effective in such cases. Further studies with a large sample size and sufficiently long follow-up periods are required.
Adult ; Antibodies, Monoclonal, Humanized ; Atrophy ; Choroid ; Choroidal Neovascularization ; Choroideremia ; Eye ; Fluorescein ; Follow-Up Studies ; Hemorrhage ; Humans ; Male ; Retinal Pigment Epithelium ; Sample Size ; Tomography, Optical Coherence ; Vision, Ocular ; Visual Acuity ; Bevacizumab

PURPOSE: To compare the clinical characteristics and laboratory finding between adenoviral and group A streptococcal (GAS) pharyngitis. METHODS: A retrospective review of medical records was performed in the patients with adenovirus infection among those who were admitted for febrile respiratory disease from January 2011 to July 2013 and GAS pharyngitis among those who visited for symptoms of scarlet fever from August 2006 to July 2013. RESULTS: 179 patients (AV1 group) were diagnosed with adenoviral pharyngitis and 37 (AV2 group) of these patients had adenovirus single infection. 26 patients (GAS group) were diagnosed with scarlet fever. Adenoviral infection (AV2 group) developed in younger patients compared to GAS group (2.8+/-2.1 years vs. 5.4+/-1.8 years, P=0.000). Total durations of fever and admission were longer in AV2 (6.3+/-2.6 days vs. 3.3+/-1.9 days, P=0.000; 4.1+/-1.2 days vs. 1.9+/-1.8 days, P=0.000, respectively). WBC counts were higher in AV2 (11,449+/-5,680 cells/mm2 vs. 6,722+/-6,941 cells/mm2, P=0.000). CRP was not significantly different between AV2 and GAS group (3.8+/-3.2 mg/dL vs. 5.2+/-5.1 mg/dL, P=0.368). No difference was found between two groups in the percentage of antibiotics use (91.9% vs. 100%, P=0.261). CONCLUSION: Clinical characteristics and measures of inflammation in the laboratory findings were similar between adenoviral and GAS pharyngitis group. It is necessary to conduct the test for respiratory virus and bacteria in early stage to differentiate in the pharyngitis patients with leukocytosis and elevation of CRP level.
Adenoviridae ; Adenoviridae Infections ; Anti-Bacterial Agents ; Bacteria ; Child* ; Fever ; Humans ; Inflammation ; Leukocytosis ; Medical Records ; Pharyngitis* ; Retrospective Studies ; Scarlet Fever

No abstract available.
Angina, Unstable*

Plasma renin activity (ORA) was determined by radioimmunoassay in 55 normal controls and 121 hypertensive patients in basal state and after double stimulation with furosemide administration and upright posture of 4 hrs. The results were obtained as follows, 1) Mean value of PRA of normal control was 2.2+/-1.41ng/ml/hr in basal state and 2.9+/-1.39ng/ml/hr after double stimulation, respectively. The latter was elevated significantly as compaired to the former. 2) PRA in males was significantly higher than in females, and PRA tend to be decreased as age become old. 3) Normal value of PRA after double stimulation was ranged from 1.0 to 5.0 ng/ml/hr. Of total 121 hypertensive patients(55 males and 66 females), PRA was low in 33 cases(27.3%), normal in 77 cases (63.6%), and high in 11 cases(9.1%). 4) Of 55 male hypertensive patients, PRA was low in 13 cases(23.6%), normal in 35 cases (63.7%), and high in 7 cases(12.7%). Of 66 female hypertensive patients,, PRA was low in 20 cases (30.3%), normal in 42 cases(63.6%), and high in 4 cases(6.1%). High renin group was observed more frequently in male hypertensive patients than in female hypertensive patients, while low renin group more frequently in famale than in male patients. 5) Low renin group was observed more frequently in older age group than in younger age group, while high renin group more frequently in younger age than in older age group.
Female ; Furosemide ; Humans ; Hypertension* ; Korea* ; Male ; Plasma* ; Posture ; Radioimmunoassay ; Reference Values ; Renin*

Wilson's disease is an autosomal recessive disorder resulting from an excessive accumulation of copper in the liver, cornea, kidneys, and in the basal ganglia of the brain. The prominent speech disturbances of Wilson's disease include monopitch, monoloudness, slow rate, low pitch, delayed in initiating speech and rarely palilalia. A19-year-old woman developed palilalia which was characterized by compulsive repetition of a phrase with increasing rapidity and with a decrescendo of voice volume. Although she had been suffering from liver cirrhosis for the past 8 months, the palilalia was the only neurological sign at initial examination. She showed a low serum ceruloplasmin, low serum copper, increased urinary copper excretion, and Kayser-Fleischer rings. Brain magnetic resonance images showed high signals in the bilateral basal ganglia in T2-weighted images, and slight cortical atrophy.
Atrophy ; Basal Ganglia ; Brain ; Ceruloplasmin ; Copper ; Cornea ; Female ; Hepatolenticular Degeneration* ; Humans ; Kidney ; Liver ; Liver Cirrhosis ; Voice

PURPOSE: There are little research about the factors of DNA damage and repair that might cause renal parenchymal damage under the condition of hydronephrosis. In this study, we studied the expressions of p53, gamma-H(2)AX and Ku70/Ku80 in rat kidney under the condition of hydronephrosis. MATERIALS AND METHODS: 16 Sprague-Dawley rats that were 7~8 weeks old were used. Partial ureteral obstruction was induced in 12 rats. And for the other 4 rats, a sham-operation was done as a control. The hydronephrosis-induced rats had their right kidney removed after 1, 2 and 3 weeks and the sham-operated rats underwent nephrectomy after 3 weeks. Those removed tissues were examined with immunohistochemical staining and western blot to confirm the degree of expression of p53, gamma-H(2)AX and Ku70/Ku80. RESULTS: The expressions of p53, gamma-H(2)AX and Ku70/Ku80 caused by hydronephrosis in the rat increased as time passed, and these expressions of controls were in a low level or they were negative. These results were similar with the results of the immunohistochemical staining and Western blot. CONCLUSIONS: This study confirmed that the protein expressions of gamma- H(2)AX, p53, and Ku70/Ku80 are increased, and these expressions are the DNA damage-related factors in the renal parenchyma of hydronephrosis-induced rats. We confirmed the possibility that DNA double strand breaks (DSBs) might be the main mechanism that induces renal parenchymal damage under the condition of hydronephrosis.
Animals ; Blotting, Western ; DNA ; DNA Breaks, Double-Stranded ; DNA Damage ; DNA Repair ; Hydronephrosis* ; Kidney* ; Nephrectomy ; Rats* ; Rats, Sprague-Dawley ; Ureteral Obstruction

PURPOSE: Retrograde migration of stone fragments is common when performing lithotripsy. A new device, the NTrap(R), is a device that prevents stone migration and it extracts calculi and other foreign bodies in the urinary tract. The aim of this study was to assess the efficacy and safety of ureteroscopic stone removal by using the NTrap(R). MATERIALS AND METHODS: From January 2006 to December 2006, 64 consecutive patients underwent endoscopic lithotripsy by using the NTrap(R), rigid ureteroscopy(8.6Fr) and pneumatic lithoclast. We analyzed the success rate of stone removal and the complication rate. RESULTS: The mean stone size and mean operation time were 9.36mm and 32 minutes, respectively. The overall stone-free rate was 100% and no patient had residual fragments greater than 3mm and they didn't require auxiliary treatment. The most common complications were gross hematuria and pain. CONCLUSIONS: The NTrap(R) is new ureteroscopic instrument that's a highly effective, safe modality for the treatment of ureteral stone.
Calculi ; Foreign Bodies ; Hematuria ; Humans ; Lithotripsy ; Ureter* ; Ureteral Calculi ; Ureteroscopy ; Urinary Tract