Publications by authors named "Hee-Yon Park"

Purpose: An extended length of stay following open reduction and internal fixation (ORIF) for proximal humerus fractures (PHFs) is associated with increased patient morbidity and health care costs. The primary purpose of this study was to identify risk factors for an extended length of stay following ORIF for PHF.

Methods: All patients who underwent ORIF for PHF between 2015 and 2021 were queried from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) database.

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Biomolecules bind to and transform nanoparticles, mediating their fate in biological systems. Despite over a decade of research into the protein corona, the role of protein modifications in mediating their interaction with nanomaterials remains poorly understood. In this study, we evaluated how glycation of the most abundant blood protein, human serum albumin (HSA), influences the formation of the protein corona on 40 nm silver nanoparticles (AgNPs) and the toxicity of AgNPs to the HepG2 human liver cell line.

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Microbial diversity is associated with improved outcomes in recipients of allogeneic hematopoietic cell transplantation (allo-HCT), but the mechanism underlying this observation is unclear. In a cohort of 174 patients who underwent allo-HCT, we demonstrate that a diverse intestinal microbiome early after allo-HCT is associated with an increased number of innate-like mucosal-associated invariant T (MAIT) cells, which are in turn associated with improved overall survival and less acute graft-versus-host disease (aGVHD). Immune profiling of conventional and unconventional immune cell subsets revealed that the prevalence of Vδ2 cells, the major circulating subpopulation of γδ T cells, closely correlated with the frequency of MAIT cells and was associated with less aGVHD.

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Several factors affect the success of an anterior cruciate ligament reconstruction, including graft origin, type, and morphology. Hamstring and bone-patellar tendon-bone autografts are the most widely used, and there are many different techniques of graft preparation with each. In this Technical Note and accompanying video, a 4-strand hamstring autograft technique is described that uses a simple diamond-type braid to produce a more ovoid morphology with increased cross-sectional area.

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Anterior shoulder pathology involving the subscapularis is often associated with the biceps tendon because both anatomic structures intersect the lesser tuberosity. Standard procedures for such pathology often involve simultaneous subscapularis repairs and biceps tenodesis. Single anterior portal subscapularis repairs have been emerging in the past 5 years because of cost-effectiveness and efficiency.

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Achilles repair has evolved over the past 30 years, from large open procedures with high complication rates to shorter, less-invasive procedures with better outcomes. Percutaneous repair has comparable failure rates with open repairs, fewer complications, and faster recovery. However, percutaneous Achilles repairs risk sural nerve injury.

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Article Synopsis
  • Pathology of the acromioclavicular joint is common and may require distal clavicle excision when conservative treatments fail.
  • Key advancements in this procedure have shifted towards arthroscopic techniques since initially being described in 1941, but recent studies show no major differences in patient satisfaction or complication rates between arthroscopic and open methods.
  • This Technical Note outlines a novel arthroscopic technique using a Kirschner wire guide to help reduce the risk of under- or over-excision during surgery.
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Acromioclavicular joint separations are common shoulder injuries, yet standard treatment practices vary. Popular surgical techniques include reconstruction using allografts or neighboring ligaments as well as repair using screws and sutures. This Technical Note and accompanying video describe both an acromioclavicular and coracoclavicular joint reconstruction using an allograft to replace native acromioclavicular ligament along with an AC joint reduction using a Suture Cerclage System to precisely control reduction and restore anatomic alignment.

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