Publications by authors named "Frank Smithuis"

Repeated muscle micro-trauma may cause severe muscle damage. Diffusion tensor imaging (DTI) exhibits sensitivity to microstructural changes in skeletal muscle. We hypothesize that longer diffusion times enhance sensitivity to micro-trauma and that membrane permeability increases with micro-trauma.

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Objective: To describe 3.0-Tesla (T) magnetic resonance imaging (MRI) findings of hamstring muscles in clinically recovered athletes who were cleared for return to play (RTP).

Design: Prospective observational study.

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  • The study investigates how tibial plateau fracture patterns relate to the impact direction, energy, and bone quality, while also exploring associated injuries in the femoral condyle that occur from the same impact.
  • A review of CT scans from 149 patients who had surgery for tibial plateau fractures revealed that 26% of them had concomitant articular femoral condyle injuries, with impaction fractures, contusions, and condyle fractures being the most common types.
  • The findings suggest that even though most femoral injuries were minor and not treated surgically, they could indicate potential future joint problems and instability in the knee.
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Anterior cruciate ligament (ACL) rupture is a frequently encountered injury among athletes, often requiring surgical intervention to restore knee stability. Magnetic resonance imaging (MRI) after ACL reconstruction is common, especially in the evaluation of clinical complications leading to knee instability, decreased range of motion, or pain. This article provides a detailed overview of normal and abnormal postoperative findings including a practical step-by-step guide for MRI assessment.

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Background: Artemisinin resistance in Plasmodium falciparum threatens global malaria elimination efforts. To contain and then eliminate artemisinin resistance in Eastern Myanmar a network of community-based malaria posts was instituted and targeted mass drug administration (MDA) with dihydroartemisinin-piperaquine (three rounds at monthly intervals) was conducted. The prevalence of artemisinin resistance during the elimination campaign (2013-2019) was characterized.

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Background: Pre-exposure prophylaxis (PrEP) is effective for human immunodeficiency virus (HIV) prevention in risk groups. We assessed PrEP uptake and 12-month retention among men who have sex with men (MSM) and transgender women (TGW) in Myanmar during the coronavirus disease 2019 pandemic and a political crisis.

Methods: Using prospectively collected data, we assessed the proportion of persons eligible, initiated and retained 12 months on PrEP.

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  • Intravoxel incoherent motion (IVIM)-corrected diffusion tensor imaging (DTI) can help predict return-to-play (RTP) readiness after hamstring injuries, but long scan times limit its usage.
  • The study tested accelerated methods of IVIM-corrected DTI by comparing standard scans and multiband (MB) accelerated scans within a week of injury and at RTP.
  • Results showed that MB acceleration significantly reduced scan duration while maintaining sensitivity to detect hamstring injuries, although the perfusion fraction (f) did not differ between injured and healthy muscles.
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Objective: Uniformity of reporting is a requisite to be able to compare results of clinical studies on the treatment of osteochondral lesions of the talus (OLT). The primary aim of this study was to evaluate the frequency and quality of reporting of size, morphology, and location of OLTs.

Design: A literature search was performed from 1996 to 2023 to identify clinical studies on surgical treatment of OLTs.

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C-reactive protein (CRP) point-of-care testing can reduce antibiotic prescribing in primary care patients with febrile and respiratory illness, yet little is known about its effects on treatment-seeking behavior. If patients go on to source antibiotics elsewhere, the impact of CRP testing will be limited. A randomized controlled trial assessed the impact of CRP testing on antibiotic prescriptions in Myanmar and Thai primary care patients with a febrile illness.

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Background: Myanmar has a large majority of all malaria in the Greater Mekong Subregion. In the past decade, substantial progress was made in malaria control. The residual burden of malaria is in remote areas where currently recommended malaria elimination approaches are generally not feasible.

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Background: Neglected tropical diseases (NTDs) affect most impoverished communities in developing countries, like Myanmar in Southeast Asia. NTDs have been understudied and underreported in Myanmar.

Methods: A systematic review of published and grey literature (1900-2023) on neglected tropical diseases (NTDs) in Myanmar was conducted.

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Athletes practicing high-contact sports are exposed to an increased risk of midfoot injuries, namely midtarsal sprains. The complexity of reaching an accurate diagnosis is clearly depicted in the reported incidence of midtarsal sprains, ranging from 5% to 33% of ankle inversion injuries. Because the focus of the treating physician and physical therapist is on lateral stabilizing structures, midtarsal sprains are missed at initial evaluation in up to 41% of patients, with delayed treatment as a result.

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Introduction: HIV viral load (VL) testing in resource-limited settings is often centralised, limiting access. In Myanmar, we assessed outcomes according to VL access and the VL cascade (case management after a first high VL result) before and after near point-of-care (POC) VL was introduced.

Methods: Routine programme data from people living with HIV (PLHIV) on antiretroviral therapy (ART) were used.

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  • The article DOI: 10.1371/journal.pntd.0009657 has been corrected to address inaccuracies or errors found in its original publication.
  • This correction ensures the integrity of the published research and provides updated information for readers.
  • It is important for scholars and researchers to reference the corrected version to ensure they are using the most accurate data.
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Purpose: To relate [F]fluoride uptake on PET with abnormalities on magnetic resonance imaging (MRI) and conventional radiography (CR) in ankylosing spondylitis (AS) patients.

Methods: Ten clinically active AS patients (female 6/10, age 38 ± 11 years) were included, and both spine and SI-joints were examined. PET scans were dichotomously scored for enhanced [F]fluoride uptake, MRI scans were scored for fatty lesions, erosions, ankylosis, and bone marrow edema (BME), and CR was scored for erosions, syndesmophytes, and ankylosis.

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  • This study looked at two ways to find muscle problems in patients with a disease called idiopathic inflammatory myopathies (IIM) using ultrasound (US) and MRI.
  • The results showed that MRI was better at finding these problems than ultrasound when the patients were first diagnosed.
  • After nine weeks of treatment, ultrasound showed some improvement in muscle conditions, but MRI still found more abnormalities overall.
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The emergence and spread of artemisinin-resistant Plasmodium falciparum, first in the Greater Mekong Subregion (GMS), and now in East Africa, is a major threat to global malaria elimination ambitions. To investigate the artemisinin resistance mechanism, transcriptome analysis was conducted of 577 P. falciparum isolates collected in the GMS between 2016-2018.

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Skeletally immature wrists are considered at risk of injury due to increased axial loading through a relatively shorter ulna. The aim of this study was to determine whether triangular fibrocartilage thickness relates to ulnar variance and age in adolescents. The radiographs and MRIs of 24 healthy adolescents were retrospectively assessed.

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  • In rural South and Southeast Asia, while malaria rates are decreasing, febrile illnesses continue to cause significant health issues, with village health workers (VHWs) serving as the primary healthcare contact for these patients.
  • VHWs often lack the training and resources to effectively treat febrile illnesses beyond malaria, leading to missed bacterial infections and improper antibiotic use.
  • The new Rural Febrile Illness (RFI) project, part of the SEACTN program, aims to assess febrile illness trends in underserved areas across multiple countries and enhance VHW capabilities for better management of all febrile conditions.
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Objective: To prospectively evaluate 1-year clinical and radiological outcomes after operative and non-operative treatment of proximal hamstring tendon avulsions.

Methods: Patients with an MRI-confirmed proximal hamstring tendon avulsion were included. Operative or non-operative treatment was selected by a shared decision-making process.

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  • Countries like Myanmar, Thailand, Laos, Cambodia, and Vietnam want to get rid of a type of malaria called Plasmodium falciparum by 2025.
  • They have a lot of help and money from The Global Fund to Fight AIDS, Tuberculosis, and Malaria to reach this goal.
  • To be successful, they need to use smart methods and support local health workers, rather than trying out new and untested plans that might not work well in remote areas.
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Introduction: Idiopathic inflammatory myopathies (IIMs) excluding inclusion body myositis (IBM) are a group of heterogeneous autoimmune disorders characterised by subacute-onset and progressive proximal muscle weakness, which are frequently part of a multisystem autoimmune disorder. Reaching the diagnosis can be challenging, and no gold standard for the diagnosis of IIM exists. Diagnostic modalities include serum creatine kinase activity, muscle imaging (MRI or ultrasound (US)), electromyography (EMG), myositis autoantibody testing and muscle biopsy.

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  • * Genetic markers of resistance were studied in over 6,700 samples from several Southeast Asian countries between 2007 and 2019, showing a complex relationship between different resistance mechanisms and regional drug treatments.
  • * The findings suggest that mefloquine and piperaquine resistance mechanisms may counterbalance each other, supporting the exploration of ASMQ combined with piperaquine as a potential triple therapy approach.
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