Publications by authors named "Young Uk Kim"

With the increasing concern regarding the effects of microplastics (MPs) on human health, it is essential to conduct research on the MPs generated in the atmosphere and on those occurring in indoor environments. One of the causes of particle generation in indoor spaces is the degradation of floor finishing materials, including human gait factor. Therefore, gait simulation experiments were conducted to verify the occurrence of MPs during the gait process.

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  • Lumbar facet joint syndrome (FJS) is a frequent cause of chronic low back pain, often treated with radiofrequency techniques when conservative methods fail, but its effectiveness is debated.
  • This study conducted a network meta-analysis (NMA) to evaluate the impact of radiofrequency on FJS by comparing it with other treatments, focusing on pain scores and disability indices.
  • The results indicate that endoscopic neurotomy outperforms radiofrequency treatments in alleviating pain and improving function over time, highlighting the need for more rigorous trials to further validate these findings.
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  • Suprascapular nerve entrapment (SNE) syndrome is often overlooked but can cause significant weakness and pain in the shoulder, particularly affecting the infraspinatus muscle.
  • A study compared the infraspinatus muscle cross-sectional area (IMCSA) and thickness (IMT) between patients with SNE syndrome and healthy individuals, finding that patients had lower IMT (25.22 mm vs. 29.17 mm) and IMCSA (1048.38 mm² vs. 1321.95 mm²).
  • The IMCSA proved to be a sensitive diagnostic tool for SNE syndrome, with optimal cutoff points showing 80% sensitivity and specificity, highlighting its potential for better diagnosis.
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Introduction: Lumbar radicular pain (LRP) is a common symptom characterised by a sharp, shooting or lancinating sensation localised to one or more dermatomes of the lumbar spine. Despite its high prevalence and significant impact on quality of life, the most effective conservative treatment for patients with LRP remains uncertain. When conventional treatment methods do not provide satisfactory results, the option of using epidural steroids and/or pulsed radiofrequency (PRF) treatment may be considered as a secondary approach for managing the condition.

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  • - The systematic review aimed to evaluate the effectiveness of pulsed radiofrequency (PRF) treatment on lumbar radicular pain (LRP) compared to local injection (LEI) by analyzing randomized controlled trials up to May 2023.
  • - Out of 10 included studies involving 613 patients, PRF showed no significant differences in pain scores at 1 or 6 months, but did demonstrate a notable pain reduction at 3 months, although overall evidence quality was rated as low to moderate.
  • - The findings suggest that while PRF may reduce pain more effectively than LEI at the 3-month mark for specific patient subgroups, there was no strong evidence to support its overall advantage in treating LRP. *
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Particulate matter is harmful to humans. An important indoor source of such particles is the deterioration of floor materials brought about by occupants walking. Accordingly, an experiment was conducted to simulate the deterioration of floor material spacing.

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Disability and pain associated with lumbar degenerative spondylolisthesis (LDS) result in a significant burden on both the healthcare costs and patients' quality of life. Currently, there exists controversy regarding employment of either nonsurgical management (NSM) or surgical management (SM) in a clinical setting. Spinal canal cross-sectional area (SCA) has been an important morphological parameter for the analysis of LDS.

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Thickening of the cervical ligamentum flavum (CLF) has been considered as a main cause of cervical spinal stenosis (CSS). A previous study reported that cervical ligamentum flavum thickness (CLFT) is correlated with CSS. However, the whole hypertrophy is different from focal thickness.

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Background: Lumbar radicular pain (LRP) is a common but challenging clinical symptom. Pulsed radiofrequency (PRF), a neuromodulation technique that uses short pulses of radiofrequency current, is effective in treating various pain disorders. However, few studies have been conducted on the effects of PRF and its modifying parameters.

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High-value-added biomass materials like biocarbon are being actively pursued integrating them with soft materials in a broad range of advanced renewable energy technologies owing to their advantages, such as lightweight, relatively low-cost, diverse structural engineering applications, and high energy storage potential. Consequently, the hybrid integration of soft and biomass-derived materials shall store energy to mitigate intermittency issues, primarily through enthalpy storage during phase change. This paper introduces the recent advances in the development of natural biomaterial-derived carbon materials in soft material assembly and its applications in multidirectional renewable energy storage.

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Objectives: In this study, we aimed to provide a more valuable diagnostic parameter and more equivocal assessment of the diagnostic potential of patellofemoral pain syndrome (PFPS) by comparing the quadriceps tendon cross-sectional area (QTCSA) with the quadriceps tendon thickness (QTT), a traditional measure of quadriceps tendon hypertrophy.

Patients And Methods: Between March 2014 and August 2020, a total of 30 patients with PFPS (16 males, 14 females; mean age, 30.4±11.

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  • The study investigates the relationship between vertebral body cross-sectional area (VBCSA) and lumbar spondylolysis (LSL), hypothesizing that VBCSA is a key predictor for LSL.
  • MRI data from 90 LSL patients and 91 control subjects revealed that LSL patients had significantly lower VBCSA measurements compared to the control groups for both males and females.
  • The findings indicate that VBCSA can serve as a reliable objective parameter for assessing LSL risk, highlighting its potential usefulness in diagnostic radiology.
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Chondromalacia patella (CMP) is abnormal softening of the cartilage of the underside the patella. It is a cause of anterior knee pain. Previous study has demonstrated that the patellar cartilage hypertrophy is correlated with early signs of CMP (Grade 1 or 2).

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Thickened ligamentum flavum has been considered as a major cause of central lumbar spinal canal stenosis (CLSCS). Previous studies have demonstrated that ligamentum flavum thickness (LFT) is correlated with aging, degenerative spinal stenosis, and disc degeneration. Thus, hypertrophy of the ligamentum flavum is a major cause of CLSCS, and measurement of LFT has been considered a morphologic parameter in the diagnosis of CLSCS.

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Background: Lumbar radicular pain (LRP) is a common symptom, but a challenging clinical problem. Pulsed radiofrequency (PRF) is a more recently developed technique that uses short pulses of radiofrequency current with intervals of longer pauses to prevent temperature from rising to the level of permanent tissue damage and has been advocated in treatment of such patients. But there were no comparative studies on the analgesic effects according to output voltage during PRF in patients with LRP.

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The fundamental requirements for thermal comfort along with the unbalanced growth in the energy demand and consumption worldwide have triggered the development and innovation of advanced materials for high thermal-management capabilities. However, continuous development remains a significant challenge in designing thermally robust materials for the efficient thermal management of industrial devices and manufacturing technologies. The notable achievements thus far in nanopolyhybrid design technologies include multiresponsive energy harvesting/conversion (e.

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  • An injured posterior talofibular ligament (PTFL) is linked to chronic lateral ankle instability (CLAI), and the study introduces the PTFL cross-sectional area (PTFLCSA) as a key diagnostic parameter instead of just measuring thickness.
  • The research involved comparing 15 CLAI patients to 16 healthy individuals, finding that both PTFL thickness and cross-sectional area were significantly larger in the CLAI group, indicating a clear difference.
  • The PTFLCSA showed a higher diagnostic performance than thickness alone, with optimal cutoff values providing high sensitivity and specificity for identifying injuries related to chronic lateral ankle instability.
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Glenohumeral joint (GHJ) space narrowing has been demonstrated to be an important morphologic parameter of glenohumeral osteoarthritis (GHO). However, the morphology of GHJ space is irregular because of degeneration of subchondral bone and articular cartilage. Thus, we devised GHJ cartilage cross-sectional area (GHJCCSA) as a new diagnostic morphological parameter to assess the irregular morphologic change of GHJ.

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A narrowed sacroiliac joint (SIJ) space has been considered to be a major morphologic parameter of ankylosing spondylitis (AS). Previous studies revealed that the sacroiliac joint thickness (SIJT) correlated with AS in patients. However, irregular narrowing is different from thickness.

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  • A thickened peroneus brevis tendon (PBTT) is linked to peroneus brevis tendinitis (PBT), but the researchers introduced a new measure called the peroneus brevis tendon cross-sectional area (PBTCSA) for better diagnosis of tendon hypertrophy.
  • A study involving 22 patients with PBT and 22 normal individuals found the PBTT and PBTCSA were significantly greater in PBT patients compared to normals, indicating inflammation.
  • The PBTCSA proved to be a more sensitive diagnostic parameter than PBTT, with higher sensitivity (90.9%) and specificity, making it a better option for early diagnosis of PBT.
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Purpose: Health care workers (HCWs), and in particular anesthesia providers, often must perform aerosol-generating medical procedures (AGMPs). However, no studies have analyzed droplet distributions on the bodies of HCWs during AGMPs. Therefore, the purpose of this study was to assess and analyze droplet distributions on the bodies of HCWs during suction of oral cavities with and without oral airways and during extubations.

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Carpal tunnel syndrome (CTS) is correlated with increased intracarpal canal pressure (ICP). The effect of palmaris longus tendon (PLT) loading on ICP is documented in previous researches. PLT loading induces the greatest absolute increase in ICP.

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There are various factors for the cause of cervical central stenosis (CCS), such as osteophyte, cervical-disc degeneration, and cervical ligamentum flavum hypertrophy. However, the pedicle of the cervical vertebra has not yet been analyzed for its relationship with CCS. We created a new morphologic parameter called the cervical-pedicle thickness (CPT) to assess the association between CCS and the cervical pedicle.

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Particulate matter (PM), an inhalable material, is generated from various sources, including building materials. To maintain indoor air quality, it is necessary to analyze harmful substances and establish a method for their remediation. The purpose of this study is to identify the particles generated during the deterioration of building materials and analyze the composition of fine dust particles with respect to the degree of deterioration.

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