Publications by authors named "Hyun- Jin Park"

Objective: To compare the safety profiles of biportal endoscopic spinal surgery (BESS) and microscopic spinal surgery (MSS) for lumbar disc herniation and spinal stenosis by analyzing the associated adverse events.

Methods: We pooled data from 2 prospective randomized controlled trials involving 220 patients (110 in each group) who underwent single-level lumbar surgery. Participants aged 20-80 years with radiating pain due to lumbar disc herniation or spinal stenosis were included in this study.

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Glabellar filler injections are a popular non-surgical approach to address depressions and wrinkles caused by aging, muscle activity, and soft tissue loss. An anatomy-based technique emphasizes understanding the complex structure of the glabellar region, including the corrugator supercilii and procerus muscles, and the superficial vascular pathways, such as the supratrochlear and supraorbital arteries. Effective treatment involves precise filler placement, often combined with botulinum toxin to address both volume loss and dynamic wrinkles.

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Introduction: The combination of hyaluronic acid (HA) fillers and polydioxanone (PDO) thread lifting is gaining popularity for mid-face rejuvenation, especially among the Asian population. Despite the common use of these techniques, there is a paucity of long-term studies assessing their combined efficacy and safety. This study aims to evaluate the efficacy and safety of combined HA filler and PDO thread treatment for mid-face rejuvenation over a 24-month period in a Korean population.

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Article Synopsis
  • Biportal endoscopic spinal surgery, particularly biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF), has gained popularity and shown good results for treating lumbar degenerative diseases.
  • A study compared outcomes of 155 patients who underwent BE-TLIF versus open posterior lumbar interbody fusion (PLIF), with BE-TLIF resulting in significantly better reductions in back pain at 1 and 6 months post-surgery.
  • Both techniques had similar radiological outcomes and fusion rates, but BE-TLIF had a longer operation time while PLIF resulted in higher blood loss; overall, BE-TLIF is positioned as a viable alternative to PLIF with early benefits in pain relief.
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Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF.

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Background: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is a minimally invasive surgical technique for treating degenerative lumbar spine conditions. It offers advantages such as reduced soft tissue trauma and lower infection rates, but certain technical aspects may be challenging. The current study aims to identify strategies to enhance the fusion rate in BE-TLIF by addressing these specific challenges.

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Background: The superficial musculoaponeurotic system (SMAS) is crucial for the structural integrity and dynamics of facial expressions and is a particularly important consideration during facelift surgeries. This study investigated the anatomical structure and continuity of the SMAS at the site where the zygomaticus major (Zmj) originates, which is where the SMAS extends from the lateral to the anterior aspects of the face. Knowledge of these aspects is crucial for understanding the mechanics of facial movements and also the aging process.

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Background: Lumbar spinal stenosis (LSS) is prevalent among octogenarians, causing significant pain and disability. Surgical intervention is often required because of the ineffectiveness of conservative treatments. This study investigates the efficacy and safety of biportal endoscopic decompressive laminectomy (BED) in octogenarians with severe LSS, evaluating its potential as a minimally invasive surgical option.

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The invention of Light Emitting Diode (LED) revolutionized energy-efficient illumination, but concerns persist regarding the potential harm of blue light to our eyes. In this study, we scrutinized the impact of LED light characteristics on eyes using two cell types: M-1 (rich in mitochondria) and CD-1 (neuronal). Variations in color rendering index (CRI) and correlated color temperature (CCT) were investigated, alongside exposure durations ranging from 0 to 24 hours.

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Purpose: This study aimed to elucidate the positions of the extended fibers of the alar part of the nasalis (Na), and their connections to the levator labii superioris (LLS), zygomaticus minor (Zmi), and adjacent skin near the nasal ala.

Methods: The extended fibers of the Na were investigated in 54 specimens obtained from 27 embalmed adult South Korean cadavers.

Results: In 51.

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Article Synopsis
  • Severe fever with thrombocytopenia syndrome (SFTS) has a high mortality rate, especially in immunocompromised patients, often leading to severe encephalitis symptoms before death.* -
  • The SFTS virus (SFTSV) infects critical areas of the brain like the brainstem and spinal cord, resulting in respiratory and motor nerve issues.* -
  • Activated A1-reactive astrocytes in infected mice cause neuronal cell death and neuroinflammation, suggesting a potential target for future SFTS treatments, as there are currently no effective therapies.*
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Article Synopsis
  • - The study investigates the anatomical structure and connections of the corrugator supercilii muscle (CS) in relation to facial muscles like the frontalis (FT) and orbicularis oculi (OOc), which is important for facial treatments aimed at symmetry and functionality.
  • - In analyzing 41 embalmed adult cadaver specimens, the researchers found that lower CS fibers connect to the OOc in almost 60% of cases, while around 40% exhibited blending with the FT, indicating varied muscle interactions.
  • - The findings emphasize the need for a detailed understanding of the CS's anatomy and its relationships with neighboring muscles, which is essential for improving procedures like Botox injections and facial surgeries.
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Objective: Foraminal and extraforaminal lumbar disc herniation (FELDH) is an important pathological condition that can lead to lumbar radiculopathy. The paraspinal muscle-splitting approach introduced by Reulen and Wiltse is a reasonable surgical technique. Minimally invasive procedures using a tubular retractor system have also been introduced.

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The study "Spaces of the Face for Filler Procedures: Identification of subSMAS Spaces Based on Anatomical Study" explores the anatomy of facial spaces crucial for safe and effective filler injections. By delineating the subSMAS (sub-superficial musculoaponeurotic system) spaces, this research highlights how these virtual compartments, bordered by fat, muscles, fascia, and ligaments, facilitate independent muscle movement and reduce the risk of damaging critical structures. The thicker and more robust skin of East Asians necessitates deeper filler injections, emphasizing the significance of accurately identifying these spaces.

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Article Synopsis
  • Duodenal mucosal resurfacing (DMR) is an innovative, minimally invasive procedure to manage metabolic syndrome, but traditional thermal ablation can lead to complications like deep mucosal injury.
  • Researchers have developed a non-thermal alternative using photodynamic therapy (PDT) with a specially designed metal stent to reduce the risks associated with thermal procedures while still effectively treating metabolic syndrome.
  • An animal study demonstrated that this new PDT approach, involving controlled release of reactive oxygen species, was safe and effective, showing no significant adverse effects while also decreasing the secretion of gastric inhibitory polypeptide (GIP), important in metabolic syndrome management.
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Background: The standard-risk hepatoblastoma has a good prognosis in children; however, refractory or relapsed (R/R) hepatoblastoma has a poor prognosis and high mortality rate. This study aimed to demonstrate the efficacy of high-dose chemotherapy and autologous hematopoietic stem cell transplantation (HSCT) rescue in pediatric patients with R/R hepatoblastoma.

Methods: We retrospectively analyzed 6 pediatric patients with R/R hepatoblastoma who underwent autologous HSCT.

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Present case report describes a case of bifid ureter arising directly from separate calyces and renal pelvis of the kidney. Incomplete ureter duplication on the left side in a 78-year-old male cadaver was found during an anatomy class. These ureters converged in a Y-shaped pattern just above the level of the anterior superior iliac spine.

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The program estimates the age-at-death of human pubic symphysis using 3-dimensional scans. It was developed by Dennis E. Slice and Bridget F.

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Traditionally, bone marrow (BM) has been preferred as a source of stem cells (SCs) in pediatric hematopoietic SC transplantation (HSCT); however, the use of peripheral blood SCs (PBSC) has recently increased. With advancing graft-versus-host disease (GVHD) prophylaxis, whether the BM is still a better SC source than PB in sibling donor HSCT remains controversial. Here, we compared the results of BM transplantation (BMT) and PBSC transplantation (PBSCT) in pediatric patients with malignant or non-malignant diseases receiving sibling HSCT using a total of 7.

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Unlabelled: In this study, malt was produced in pilot-scale facilities and conditioned using three barley ( L.) cultivars in South Korea (Heugho, Hopum, and Kwangmaeg). Quality and starch characteristics were compared.

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Recently, the food packaging industry has focused on developing an eco-friendly and sustainable food packaging system. This study describes the effect of beeswax on the physical, structural, and barrier properties of a polyvinyl alcohol (PVA)/polyacrylic acid (PAA) composite film. The incorporation of beeswax improved the barrier properties against oxygen, water, and oil.

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Article Synopsis
  • Katsuobushi is a traditional Japanese food additive made from smoked, dried skipjack tuna, known for its unique flavor.
  • Advanced techniques like GC-MS and spectroscopy methods were used to assess its quality based on the number of smoking treatments, identifying 46 metabolites and five key compounds.
  • The study showed that FTIR and NIR spectroscopy, along with chemometric methods, can effectively evaluate katsuobushi quality, with NIR spectroscopy showing particularly strong potential for this purpose.
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Three-dimensional (3D) printing has been applied to produce food products with intricate and fancy shapes. Dimensional quality, such as dimensional stability, surface smoothness, shape fidelity, and resolution, are essential for the attractive appearance of 3D-printed food. Various methods have been extensively studied and proposed to control the dimensional quality of printed foods, but few papers focused on comprehensively and deeply summarizing the key factors of the dimensional quality of printed products at each stage-before, during, and after printing-of the 3D printing process.

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