Publications by authors named "Joon Ha"

Article Synopsis
  • The study investigates the role of one-hour post-load plasma glucose (1 h-PG) levels as an early marker for Type 2 Diabetes (T2D) risk by analyzing a longitudinal cohort over ten years.
  • It categorizes participants into three groups based on their initial 1 h-PG levels and measures insulin sensitivity and β-cell function at different stages.
  • Results indicate that individuals with higher 1 h-PG levels have a greater risk of developing T2D and experiencing decreased insulin sensitivity and β-cell function, highlighting the potential for early interventions in those with high 1 h-PG but normal glucose tolerance.
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Purpose: Biological augmentation of anterior cruciate ligament (ACL) reconstruction with bone marrow aspirate concentrate (BMAC) is gaining attention for its theoretical potential to enhance postoperative healing and recovery. However, its clinical benefits remain uncertain, and its high cost raises questions about efficacy. Hence, we systematically reviewed randomised controlled trials (RCTs) to evaluate the effectiveness of BMAC in ACL reconstruction.

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Article Synopsis
  • The study focuses on the learning curve of the minimally invasive Chevron and Akin osteotomy (MICA) for treating hallux valgus, a procedure that has become more popular among surgeons.
  • Seven relevant studies were analyzed after an initial search of 287 papers, with findings suggesting that it takes between 20 to 42 operations for surgeons to significantly improve efficiency in operation time and fluoroscopy exposure.
  • However, complications did not show a substantial decrease with increased surgical practice, and all studies reviewed displayed a moderate risk of bias.
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Article Synopsis
  • The study aimed to validate a new mathematical model for measuring insulin sensitivity and β-cell function, as traditional methods are impractical for large-scale research.
  • The researchers used data from previous studies involving 130 obese youths to compare their model-derived indices against standard clamp measurements and other indices.
  • The findings indicated that the new model (mDI-woI) was more effective at detecting insulin resistance and prediabetes than traditional methods, suggesting it could serve as a cost-effective tool for large epidemiological studies.
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Diagnosing diabetes by shortening the OGTT to 1-h and substituting 1-h post-load glucose (PG) ≥ 209 mg/dL for 2-h PG≥200 mg/dL has been proposed. One-hour PG≥209 mg/dL is from a meta-analysis without any African-descent populations. Our data suggest 1-h PG≥183 mg/dL maybe more optimal for Africans.

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Article Synopsis
  • The hamstring tendon (HT) autograft is currently the most popular choice for ACL reconstruction, but recent research suggests the peroneus longus tendon (PLT) could be a good alternative.
  • A systematic review of 683 patients across 6 randomized controlled trials showed that, while preoperative scores were lower in the PLT group, there were no significant differences in patient-reported outcomes at 6, 12, and 24 months post-surgery.
  • The research indicates that the PLT autograft offers similar effectiveness to HT autograft, with comparable graft sizes and fewer complications at the donor site.
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Efficient and accurate methods to estimate insulin sensitivity () and β-cell function (BCF) are of great importance for studying the pathogenesis and treatment effectiveness of type 2 diabetes (T2D). Existing methods range in sensitivity, input data, and technical requirements. Oral glucose tolerance tests (OGTTs) are preferred because they are simpler and more physiological than intravenous methods.

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Objective: Elevated rates of gluconeogenesis are an early pathogenic feature of youth-onset type 2 diabetes (Y-T2D), but targeted first-line therapies are suboptimal, especially in African American (AA) youth. We evaluated glucose-lowering mechanisms of metformin and liraglutide by measuring rates of gluconeogenesis and β-cell function after therapy in AA Y-T2D.

Methods: In this parallel randomized clinical trial, 22 youth with Y-T2D-age 15.

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Efficient and accurate methods to estimate insulin sensitivity (S) and beta-cell function (BCF) are of great importance for studying the pathogenesis and treatment effectiveness of type 2 diabetes. Many methods exist, ranging in input data and technical requirements. Oral glucose tolerance tests (OGTTs) are preferred because they are simpler and more physiological.

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Aims: The timing of increase in 1-hour PG and its utility as an earlier predictor of both prediabetes (PreDM) and type 2 diabetes (T2D) compared to 2-hour PG (2 h-PG) are unknown. To evaluate the timing of crossing of the 1 h-PG ≥ 155 mg/dl (8.6 mmol/L) for PreDM and 209 mg/dl (11.

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Purpose: Poor outcomes and high complication and reoperation rates have been reported with tension-band wiring (TBW) in the management of patellar fractures and particularly the comminuted ones. The purpose of this study was to investigate the functional outcomes and complication rates of patellar fractures managed with open reduction and internal fixation (ORIF) with a plate.

Methods: MEDLINE, EMCare, CINAHL, AMED and HMIC were searched, and the PRISMA guidelines were followed.

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Smart glasses can provide a heads-up display of advanced imaging intraoperatively. In recent years, growing attention has been drawn to the use of smart glasses as an assistive technology to improve both efficiency and ergonomics in a surgical setting. Previous studies have reported improved surgical accuracy, efficiency, and ergonomics with its usage, but its effectiveness as a form of intraoperative heads-up display remains elusive in the context of orthopaedics.

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Context: Youth with obesity and abnormal glucose tolerance have an increased risk for atherosclerosis but the relative contributions of insulin resistance and hyperglycemia to dyslipidemia and the development of subclinical atherosclerosis are unknown.

Objective: This work aims to determine the association between insulin resistance, dyslipidemia, and carotid intimal thickness (cIMT) in adolescents with normal and abnormal glucose tolerance.

Methods: An observational cohort study in 155 youth: 44 obese insulin sensitive (OIS; fasting insulin ≤ 20 µM/mL, body mass index [BMI] ≥ 95th percentile), 35 obese insulin resistant (OIR; fasting insulin > 20 µM/mL, BMI ≥ 95th percentile), 34 obese abnormal glucose tolerant (AGT; BMI ≥ 95th percentile), and 42 Lean (BMI 5th-85th percentile).

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Pulsatile insulin secretion by pancreatic beta cells is necessary for tight glucose control in the body. Glycolytic oscillations have been proposed as the mechanism for generating the electrical oscillations underlying pulsatile insulin secretion. The glycolytic enzyme 6-phosphofructokinase-1 (PFK) synthesizes fructose-1,6-bisphosphate (FBP) from fructose-6-phosphate.

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Article Synopsis
  • The study looked at how many African-born blacks living in America had abnormal glucose tolerance (Abnl-GT), which can lead to diabetes or prediabetes.
  • Out of 486 people tested, 37% were found to have Abnl-GT, with more having β-cell failure (62%) than insulin resistance (38%).
  • People with β-cell failure had healthier body weight and lower cholesterol levels compared to those with insulin resistance, indicating different causes for the glucose problems.
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Background & Aim: Utilization of augmented reality (AR) and heads-up displays (HUD) to aid orthopaedic surgery has the potential to benefit surgeons and patients alike through improved accuracy, safety, and educational benefits. With the COVID-19 pandemic, the opportunity for adoption of novel technology is more relevant. The aims are to assess the technology available, to understand the current evidence regarding the benefit and to consider challenges to implementation in clinical practice.

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We address a problem with the Bergman-Cobelli Minimal Model, which has been used for 40 years to estimate during an intravenous glucose tolerance test (IVGTT). During the IVGTT blood glucose and insulin concentrations are measured in response to an acute intravenous glucose load. Insulin secretion is often assessed by the area under the insulin curve during the first few minutes (Acute Insulin Response, AIR).

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Background: Ankle fractures in diabetic patients are known to have an increased morbidity. This systematic review aims to evaluate the current evidence in terms of risk profile and inform treatment options.

Methods: Following the methodology of the Cochrane collaboration, an extensive literature search was conducted.

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Whether an OGTT reproducibly detects either type 2 diabetes (T2D) or prediabetes in Africans in unknown. Therefore, 131 Africans had two OGTT. Diagnostic reproducibility for T2D was excellent (κ = 0.

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Aims: This study explores the reported rate of surgical site infection (SSI) after hip fracture surgery in published studies concerning patients treated in the UK.

Methods: Studies were included if they reported on SSI after any type of surgical treatment for hip fracture. Each study required a minimum of 30 days follow-up and 100 patients.

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Objective: In African-born Blacks living in America, we determined by BMI category ) prevalence of abnormal glucose tolerance (Abnl-GT) and ) diagnostic value and reproducibility of hemoglobin A (HbA), fructosamine, and glycated albumin (GA).

Research Design And Methods: Participants ( = 416; male, 66%; BMI 27.7 ± 4.

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