• International Journal of Highway Engineering
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• v.13 no.2
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• pp.31-39
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• 2011

More than sixty percentage of highway in South Korea were constructed by concrete pavements and more than half of the concrete pavements were twenty years or older. Maintenance and rehabilitation of aged cement concrete pavements required early transportation opening due to difficulty of preparing bypass roads, given South Korea's transportation condition and so far, mostly asphalt concrete overlay has been used. However, asphalt concrete pavement maintenance and rehabilitation is costly because of early damage and at the same time, it causes inconvenience to the road users. Recently, as an effective method of rehabilitation for aged cement concrete pavement, bonded concrete overlay is being attempted. Therefore, utilizing various data on year-by-year basis is needed to rationally analyze of the damage on asphalt concrete overlay and bonded concrete overlay is necessary. However, in South Korea database of Serviceability damage on asphalt concrete overlay and bonded concrete overlay does not exist. In this research, performance is evaluated by the LTPP (Long Term Pavement Performance) Data of U.S.A, which accumulated various damage data of asphalt concrete overlay and bonded concrete overlay. However, the pattern distress of asphalt concrete overlay and bonded concrete overlay are different. Therefore, the pavement distress data of each section is collected into database and distress are calculated PCI(Pavement Condition Index) in order to compare life of asphalt concrete overlay and bonded concrete overlay.

• Journal of Korean Neurosurgical Society
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• v.61 no.6
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• pp.767-773
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• 2018

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. Our case series demonstrates the potentially devastating neurological outcome of surfer's myelopathy; however, early recovery in the initial 24-72 hours of presentation can occur in some patients, which is in accordance with previous reports. Ischemic insult to the spinal cord is thought to play a crucial role in the pathophysiology of surfer's myelopathy. Treatment recommendations include hydration, induced hypertension, early spinal angiography with intra-arterial intervention, intravenous tissue plasminogen activator, and high-dose steroid therapy; however, there is no standardized treatment option available. Early recovery appears to be important for long-term neurological outcome. Induced hypertension for initial treatment can be helpful for improving spinal cord perfusion; therefore, it is important for early and long-term neurological recovery. Education and awareness are essential for preventing surfer's myelopathy and avoiding further deterioration of neurological function.

• Journal of the Korean Arthroscopy Society
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• v.13 no.2
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• pp.170-173
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• 2009

Wiring techniques in the fixation of patellar fracture are commonly used. Rigid fixation is essential for early rehabilitation. Breakages of wires after the fixation of patellar fracture are common with extracapsular migration if not removed for long term. But, we experienced a case of patellar fracture with early breakage of wiring and migration of the broken wire fragment into the popliteal fossa through the popliteal hiatus in 64- year-old man and we successfully treated this case, using both arthroscopic and open procedures. So we report this unusual case with a review of current literatures.

• Korean Journal of Bronchoesophagology
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• v.5 no.2
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• pp.191-197
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• 1999

Background and Objective : Soft palate plays a great role in function of speech and swallowing. Ablation of tonsil cancer results in multi-demensional defect including soft palate in most cases and restoration of the postoperative oral cavity function is a continuing surgical challenge. Although a variety of techniques are available, radial forearm free flap has been known as an effective method for these defect, which offers a thin, pliable, and relatively hairless skin, and a long vascular pedicle. The aim of the present study is to report the speech and swallowing function test results of our 5 consecutive radial forearm free flaps used for tonsil cancers. Materials and Methods : We reviewed the medical records of 5 patients who were offered intraoral reconstruction with a radial forearm free flap after ablative surgery for tonsil cancers, from Dec. 1997 to Oct. 1998, and analyzed the surgical methods, complications, and speech and swallowing function test results. We have examined with modified barium swallow to evaluate postoperative wallowing function and articulation and resonance test for speech. Results : The tumor sizes by TNM stage(AJCC, 1997) were T1(1), T2(2), and T4(3). The paddles of flaps were tailored in multilobed designs from oval shape to pentalobed design and in variable size from 24$cm^2$ to 108$cm^2$(average size = 78.4$cm^2$), according to the defect after ablation. This procedures resulted in satisfactory flap success and functional results all but 1 case of flap contracture in 2 postoperative week, achieved early oral diet until 16-57 postoperative day(average, 28 days) and social speech. The oropharyngeal defect including soft palate reconstruction with radial forearm free flap might be an excellent method for the maximal functional results, after ablative surgery of tonsil cancer that results in multidimensional defect.

• Journal of Dental Rehabilitation and Applied Science
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• v.31 no.3
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• pp.253-261
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• 2015

Chronic periodontitis involves subsequent loss of teeth, and if left untreated, can lead to adjacent teeth drifting and supraeruption of the rest dentition. Careful consideration has to be given when deciding extraction of remaining teeth in treatment of periodontally compromised dentitions. For tooth-supported fixed partial dentures or removable partial dentures, periodontally compromised teeth are extracted due to possible early failure from functional overload, but for implant restoration, the teeth could be used as supports for fixed partial dentures because implants can reduce overload on teeth. The remaining natural teeth can help clinicians restoring vertical dimension and normal occlusal plane in full mouth rehabilitation because it conserves patients' proprioceptive response. This clinical report describes treatment of a patient who has a few remaining teeth and supraeruption of the rest dentition from severe chronic periodontitis. Satisfactory clinical result was achieved with full mouth rehabilitation using a few teeth and implants.

• Journal of Korean Medicine Rehabilitation
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• v.20 no.2
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• pp.63-77
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• 2010

Objectives : It is known that abdominal obesity increases the possibility of cardiovascular diseases, early death, and metabolic syndrome including dyslipidemia and insulin resistance. Clinical trials have been under way to verify the effectiveness of treatment for abdominal obesity. The objective of this study is to set criteria about how effective oriental medicine and acupuncture are in abdominal obesity. Methods : I manually search "www.clinicaltrial.gov", 4 Korean medical databases and 4 Korean medical journals of abdominal obesity. Search terms used were "abdominal obesity" or "visceral obesity". In order to see detail review, searching was performed from 01, 01, 2005 to 11, 31, 2009. And I classified all the searched studies into design, intervention, purpose, end point, diseases, condition and etc. Results : 1. I could search total 67 trials in "www.clinicaltrial.gov". I found 9, 10, 13, 8, 6 clinical trial from 2005 to 2009 every year. 2. Test on both gender and adult or adult and senior have been most frequent. 3. Randomization clinical trial is 51 cases that occupied 96.2%. 38 cases use control group. 4. Body mass index(BMI) and waist circunference(WC) are major criteria of abdominal obesity clincal trial. WC, BMI, abdominal fat mass, body weight are measured at end point of abdominal obesity clincal trial. 5. I could search total 86 cases in domestic study. I found 15, 23, 23, 20, 5 cases from 2005 to 2009 every year. 6. Test on female and adult have been most frequent in domestic study. 7. Randomization clincal trial is only 2 cases that occupied 2.3%. 62 cases use control group in domestic study. 8. BMI, body fat percent, WC, visceral-subcutaneous fat ratio(VSR), waist-hip ratio(WHR) are criteria of abdominal obesity clincal trial in domestic study. WC, BMI, abdominal fat mass, body weight are measured at end point of abdominal obesity clincal trial in domestic study. Conclusions : To improve abdominal obesity study in traditional korean medicine, it is need to activate clinical trial, meta analysis, develope of clinical practice guidelines, co-works with conventional medicine and etc.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.8 no.2
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• pp.109-118
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• 2014

The purpose of this study was to compare the effectiveness of rehabilitation therapy with natural recovery in patients who had dysphagia due to stroke. Swallowing functions were examined on a total of 98 patients with stroke-caused dysphagia based on a videofluoroscopic swallowing study (VFSS) for 8 weeks. The each group was evaluated with DOSS, DSS and FOSS to assess swallowing ability in the first week and re-evaluated in the $8^{th}$ week during the session for investigating the recovery status. The author compared the above initial data and follow-up data using a Mann-Whitney U test, Kruskal-Wallis test and Wilcoxon's Signed Rank test, ANCOVA to confirm statistically controlling for the effects of other continuous variables, performed by IBM SPSS Statistics 20.0 for windows. There was statistically significant recovery in the experimental group except measure of DOSS (p>0.05). In the control group, it showed improvement in all the scales(p<0.05). After terminating each session, the comparison of the two group of patients showed statistical significant differences in DSS and FOSS(p<0.05). These results suggest that possibility of natural neurologic recovery has positive effects on early stage of dysphagia caused by stroke.

• Journal of the Korean Arthroscopy Society
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• v.16 no.1
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• pp.34-39
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• 2012

Purpose: This study performed to compare degree of joint stiffness and clinical results between early and delayed reconstruction of acute anterior cruciate ligament (ACL) injuries. Materials and Methods: Thirty-four Patients who underwent ACL reconstruction between March 2008 and October 2010 enrolled this study. We divided the patient into 2 groups, early reconstruction group underwent surgery before a week, delayed reconstruction group underwent surgery after 3 weeks, before 6 weeks. All the patients underwent aggressive joint motion exercise till surgery and enrolled post operative rehabilitation program including self exercise. We checked range of motion, the Lachman test, the pivot shift test, the Lysholm score, the International Knee Documentation Committee (IKDC) score and the Tegner score to evaluate the results. Results: At the final follow up. The Lysholm score was 91.82 in the early group and 94.83 in the delayed group. All the cases were rated above B (near normal) on IKDC score (P=0.217, P=0.845). The Tegner score was 6.7 in the early reconstruction group and 7.1 in the delayed group (P=0.840), there was no difference between the groups for the range of motion (P=0.873, P=0.873), no complication such as deep vein thrombosis or infection, no difference in the Lachman test, pivot shift test (P=0.606, P=0.118). Conclusion: We could obtain satisfactory clinical results in both the early and delayed reconstruction groups of acute ACL injuries. Therefore, the early reconstruction of ACL performed before a week could be one of the treatment options for acute ACL injury.

• Clinical and Experimental Pediatrics
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• v.57 no.5
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• pp.232-239
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• 2014

Purpose: Mitochondrial disease (MD) and Duchenne muscular dystrophy (DMD) are often associated with cardiomyopathy, but the myocardial variability has not been isolated to a specific characteristic. We evaluated the left ventricular (LV) mass by echocardiography to identify the general distribution and functional changes of the myocardium in patients with MD or DMD. Methods: We retrospectively evaluated the echocardiographic data of 90 children with MD and 42 with DMD. Using two-dimensional echocardiography, including time-motion (M) mode and Doppler measurements, we estimated the LV mass, ratio of early to late mitral filling velocities (E/A), ratio of early mitral filling velocity to early diastolic mitral annular velocity (E/Ea), stroke volume, and cardiac output. A "z score" was generated using the lambda-mu-sigma method to standardize the LV mass with respect to body size. Results: The LV mass-for-height z scores were significantly below normal in children with MD ($-1.02{\pm}1.52$, P<0.001) or DMD ($-0.82{\pm}1.61$, P =0.002), as were the LV mass-for-lean body-mass z scores. The body mass index (BMI)-for-age z scores were far below normal and were directly proportional to the LV mass-for-height z scores in both patients with MD (R =0.377, P<0.001) and those with DMD (R =0.330, P=0.033). The LV mass-for-height z score correlated positively with the stroke volume index (R =0.462, P<0.001) and cardiac index (R =0.358, P<0.001). Conclusion: LV myocardial atrophy is present in patients with MD and those with DMD and may be closely associated with low BMI. The insufficient LV mass for body size might indicate deterioration of systolic function in these patients.

• Journal of Digital Convergence
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• v.17 no.6
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• pp.297-305
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• 2019

The purpose of this study was to examine resilience and empathy on the relation between humanity and friendship of the early adolescents using structural equation modeling. The subjects were total 332 students of the 5th and 6th grade in elementary school and 1st and 2nd grade in junior school. The data were collected by means of the self-report questionnaire. The results of this study were as follows: Firstly, the direct effect of humanity on resilience, empathy, and friendship was found. Resilience also influence friendship directly, but empathy did not affect friendship. Secondly, humanity had influence on friendship partially mediated by resilience, but not mediated by empathy. This result shows that resilience was better mediated between humanity and friendship than empathy. Additionally, sex differences were found on empathy, but the differences were not found on resilience. The results revealed that the adolescents who scored high on humanity were better at friendship and when the higher humanity score was, the higher level of resilience was found, and this had an indirect effect on friendship quality.