• Journal of Trauma and Injury
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• v.30 no.2
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• pp.41-46
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• 2017

Purpose: To determine the incidence of post-concussion syndrome (PCS) in Korean patients after minor traumatic brain injury. Methods: We conducted an observational cohort study of a convenience sample of patients presenting to the emergency department of a major academic Korean hospital. Patients who visited the Emergency Department for head trauma were screened. A researcher questioned the subject regarding his or her symptoms. Subjects were contacted by phone approximately 2 weeks after their Emergency Department visit and questioned about subsequent symptoms and subsequent visits for medical care. Results: Only 8% of subjects reported any post-concussion symptoms. Only 0.4% had three or more symptoms which might have met criteria for PCS. The median peak onset of symptoms was 3 days after injury. Conclusion: The incidence of PCS is Korean patients is much lower than that documented for patients in the United States or other western countries. On the other hand, this study results could give an idea that mild trauma could also cause the PCS. Further study is needed to replicate this finding and investigate possible explanations for this difference.

• Journal of Pharmacopuncture
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• v.14 no.4
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• pp.53-58
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• 2011

Objectives: There is no report on treatment of acute traumatic rotator cuff tear in Traditional Korean Medicine. We reported Traditional Korean Treatment for pain relief and better movement of acute traumatic rotator cuff tear. Methods: Shoulder MRI was used to confirm the diagnosis of tear of rotator cuff. The patient was treated with Traditional Korean Methods (Acupuncture, Herbal medicine, Pharmacopuncture) for 6 months. We evaluated the patient through VAS (Visual Analogue Scale), UCLA shoulder scale, ROM (Range of motion) and Shoulder MRI. Results: After 6 months of treatment, the patient's VAS was decreased whereas UCLA score and Shoulder ROM were increased. Rotator cuff tear was repaired on Shoulder MRI images. Conclusions: In acute traumatic rotator cuff tear, Korean Traditional Treatment is good method for pain relief and better movement.

• The Bulletin of The Korean Astronomical Society
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• v.41 no.2
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• pp.61.1-61.1
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• 2016

Black hole (BH) mass is a fundamental quantity to understand BH growth, galaxy evolution, and connection between them. Thus, obtaining accurate and precise BH mass estimates over cosmic time is of paramount importance. The rest-frame UV CIV ${\lambda}1549$ broad emission line is commonly used for BH mass estimates in high-redshift AGNs (i.e., $2{\leq}z{\leq}5$) when single-epoch (SE) optical spectra are available. Achieving correct and accurate calibration for CIV-based SE BH mass estimators against the most reliable reverberation-mapping based BH mass estimates is thus practically important and still useful. By performing multi-component spectral decomposition analysis to obtained high-quality HST UV spectra for the updated sample of local reverberation-mapped AGNs including new HST STIS observations, CIV emission line widths and continuum luminosities are consistently measured. Using a Bayesian hierarchical model with MCMC sampling based on Hamiltonian Monte Carlo algorithm (Stan NUTS), we provide the most consistent and accurate calibration of CIV-based BH mass estimators for the three line width characterizations, i.e., full width at half maximum (FWHM), line dispersion (${\sigma}_{line}$), and mean absolute deviation (MAD), in the extended BH mass dynamic range of log $M_{BH}/M_{\odot}=6.5-9.1$.

• Clinics in Shoulder and Elbow
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• v.5 no.1
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• pp.42-46
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• 2002

Purpose : To analyze the outcome after barbotage and subacromial corticosteroid injection in acute pain attack with calcific tendinitis of the shoulder. Materials and Methods : Twenty-two patients with acute calcific tendinitis were analyzed with average follow-up of Twenty-two months. The shape and size of calcific deposits were classified. The outcome was assessed by UCLA shoulder score and pain in visual analogue scale(VAS). Results : Sixteen patients(73%) had permanent relief of pain. The results assessed by UCLA score were excellent in fourteen patients and good in two patients. Average VAS for pain was 0.6 ± 0.73 (range:0-2). No complication was enccpuntered, but six patients underwent surgical treatment due to lack of improvement or recurrence. Conclusion : Barbotage as a primary treatment in acute calcific tendinits of the shoulder is simple and effective, and therefore should be tried before surgical intervention.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37B no.10
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• pp.901-911
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• 2012

Over the last decade, the Internet in Korea has developed rapidly. The number of ASes in Korea is 755. However, there has been no significant effort to obtain an accurate picture of the Internet AS-level topology. To construct more complete set of Korea AS-level topology data all the available data sources are critically reviewed and compared. Three data sources, which can be used to infer Korea Internet AS-level topology, are selected; BGP data of UCLA "Internet Topology Collection", IRR data and IXP data. It is known that global Internet AS-level topology follows power-law distribution. In this paper, we also investigate if the Korea Internet AS-level topology follows power-law distribution.

• Clinics in Shoulder and Elbow
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• v.18 no.1
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• pp.21-27
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• 2015

Background: To report the radiological and clinical outcomes of internal fixation using distal clavicle hook plates for distal clavicle fractures. Methods: From April 2008 to December 2012, 32 patients with distal clavicle fractures underwent surgery using an AO hook plate. The reduction was qualified and evaluated according to the radiological findings. The evaluation of the clinical outcomes was performed with the University of California at Los Angeles (UCLA) score, the Korean Shoulder score, and the visual analogue scale (VAS) pain score. Results: By radiological evaluation, we found that 31 of 32 patients showed anatomical reduction and solid bone union. Although we obtained satisfactory UCLA scores, Korean Shoulder Scale scores, and VAS pain scores, 12 cases of complications were present. We found 4 cases of osteolysis of the acromion, 1 case of nonunion, 3 cases of periprosthetic fractures, 3 cases of subacromial pain, and 1 case of skin irritation. We performed re-operations in 2 patients. Conclusions: To avoid complications associated with clavicle hook plates, choosing the appropriate hook size and bending of the hook according to the slope of the acromion undersurface is critical. Also, we believe that early removal of clavicle plates may help reduce complications.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.11
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• pp.2365-2373
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• 2012

To obtain Korea AS-level internet topology, we used three data sources, which include BGP data of UCLA IRL, IRR and IXP data. Using Internet topology generator models(Waxman, BA and GLP), we developed three graphs that have same number of nodes as Korea AS-level Internet. Then we compared each graph with the Korea AS-level Internet topology. Through this study we could find that the existing Internet topology generators can't simulate Korea AS-level internet.

• Clinics in Shoulder and Elbow
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• v.3 no.1
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• pp.33-38
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• 2000

Objectives: The purpose of this study was to grading the severity of intra-articular lesions and evaluate the effects of arthroscopic surgery after manipulation of the resistant frozen shoulder. Materials and Methods : Forty-eight cases from 44 subjects, median age of 53, who underwent arthroscopic surgery after manipulation with minimum follow-up of 12 months were chosen. The UCLA shoulder rating scale was applied, and average scale was 18.2 points. Results: Twelve cases out of our series showed as rotator cuff tear which could produce secondary frozen shoulder. In postoperative follow up, 34 subjects complained of no pain or noctalgia, 5 showed mild degree of pain, 8 with mild degree of remained limited range of motion, and only 1 with no improvement. When viewed with UCLA shoulder rating scale, the most improved aspect was pain, and satisfaction of patient was following. And final average scale was 31.9 points. Conclusion: Our study revealed that arthroscopic surgery after manipulation showed favorably high final scale and patient's satisfaction. Therefore, we recommend this modality for treatment of resistant frozen shoulder in a point of view that the diagnosis and treatment can be done simultaneously.

• Clinics in Shoulder and Elbow
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• v.19 no.2
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• pp.84-89
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• 2016

Background: The purpose of this study was to assess the results of arthroscopic bridging repair using a human dermis allograft in the treatment of massive irreparable rotator cuff tears. Methods: From November 2009 to April 2011, 12 patients underwent arthroscopic bridging repair using a human dermis allograft in the treatment of massive irreparable rotator cuff tears. Patients were followed for an average of 33.9 months. Clinical outcome was evaluated preoperatively and postoperatively using the mean University of California, Los Angeles (UCLA) score and the Korean Shoulder Scoring System (KSS). Magnetic resonance imaging (MRI) was performed postoperatively at an average of 6.5 months. Results: At a mean follow-up of 33.9 months (range, 25 to 42 months), 11 out of 12 patients were satisfied with their procedure. Patients showed significant improvement in their mean modified UCLA score from 15.9 preoperatively to 29.4 postoperatively (p=0.001). The mean KSS score improved from 45.6 preoperatively to 80.5 postoperatively (p=0.002). In MRI studies, 9 out of 12 patients had full incorporation of the graft into the native rotator cuff remnant. To date, there has been no intraoperative or postoperative complication from the graft procedure, such as infection or allograft rejection, in any patient. Conclusions: Arthroscopic bridging repair using a human dermis allograft can be considered as an option in treatment of select cases of massive irreparable rotator cuff tears, resulting in high patient satisfaction.

• Journal of the korean academy of Pediatric Dentistry
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• v.40 no.1
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• pp.72-81
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• 2013

Early childhood caries prevalence has increased significantly in children ages 2~5 years. ECC disproportionately affects lower socioeconomic and minority groups, is a predictor for future decay, but is preventable and manageable. Caries risk assessment systematically derives a patient's caries risk and is important during an infant oral health visit beginning at age 1. Information obtained through a risk assessment can guide a disease management care path tailored to an individual's age and risk to effectively treat and manage one's caries disease process.