Publications by authors named "Sisman A"

Purpose: The study aimed to compare the clinical and radiologic results of pinning and modified Dunn procedure methods in stable-moderate slipped capital femoral epiphyses surgery.

Methods: Slipped capital femoral epiphyses cases between January 2000 and December 2022 were retrospectively analyzed. Stable and moderate cases treated with pinning or modified Dunn procedure and those with a follow-up period longer than 1 year were included.

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Article Synopsis
  • Lateral condyle fractures are common in children (ages 6-10) and can be treated using open or closed reduction methods, but guidelines on treatment choices are unclear.
  • This study reviewed 111 patients who had surgery for Song type 4 and 5 fractures from 2011-2016, comparing outcomes between those treated with closed reduction and percutaneous pinning (CRPP) and open reduction and internal fixation (ORIF).
  • Results showed no significant differences in patient demographics or fracture displacement, but radiological outcomes indicated a higher rate of lateral spur formation in the ORIF group (47.5%) compared to the CRPP group (23%).
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For noninteracting particles confined in a constant volume, the temperature derivative of the local energy assumes negative values in thermodynamic equilibrium at low temperatures. This peculiar behavior may entail the misleading unphysical conclusion that the local heat capacity is negative. However, we show that temperature-dependent density variations of confined particles induce an energy selective particle transport within the domain, here called temperature-induced quantum migration.

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Recent spine studies focused on identifying whether intradiscal vacuum phenomenon (VP) was associated with spinal instability. However, none of them reported a direct association between VP and spinal instability following fusion for degenerative lumbar spine disorders (DSDs), namely junctional disorders. In the present study, we aimed to evaluate whether the VP was predictive for junctional disorders in patients who underwent short-segment lumbar decompression and fusion for DSDs at a tertiary spine center.

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Objectives: Artificial intelligence-based robotic systems are increasingly used in medical laboratories. This study aimed to test the performance of KANKA (Labenko), a stand-alone, artificial intelligence-based robot that performs sorting and preanalytical quality control of blood tubes.

Methods: KANKA is designed to perform preanalytical quality control with respect to error control and preanalytical sorting of blood tubes.

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We developed a microchip device using surface acoustic waves (SAW) and sharp-edge glass microparticles to rapidly lyse low-level cell samples. This microchip features a 13-finger pair interdigital transducer (IDT) with a 30-degree focused angle, creating high-intensity acoustic beams converging 6 mm away at a 16 MHz frequency. Cell lysis is achieved through centrifugal forces acting on cells and glass particles within the focal area.

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Introduction: In this retrospective study stabilities of 24 implants simultaneously placed at posterior maxillae with sinuses grafted by advanced platelet rich fibrin (A-PRF) and newly formed bone around them were evaluated.

Patient And Methods: Fourteen augmented maxillary sinuses of 11 patients with a mean residual alveolar bone height of 4.55 mm were involved in this study.

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Background: The posterior malleolus is an important component of the distal tibiofibular complex and plays a crucial role in maintaining ankle joint stability. This study aimed to compare the clinical and radiological outcomes of fixation with anteroposterior (AP) and posteroanterior (PA) compression screws in patients with Haraguchi Type 1 PMFs.

Methods: Data from 306 patients who underwent surgery for trimalleolar fractures between January 2018 and March 2022 were retrospectively reviewed, and 60 patients meeting the criteria were included in the study.

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Background: We aimed to compare radiologically and clinically closed reduction circular casting (CRCC) and volar locking plate (VLP) treatment options in elderly patients over 75 years with intraarticular distal radius fracture (DRF).

Material And Method: Elderly patients aged ≥75 years with at least one year of follow-up from the clinic archive who underwent conservative (CRCC) and surgical (VLP) treatment for AO type C DRF were retrospectively included in the study. Thirty-seven patients treated conservatively with CRCC and 31 treated surgically with VLP were compared as two groups.

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The quantum size and shape effects are often considered difficult to distinguish from each other because of their coexistence. Essentially, it is possible to separate them and focus solely on the shape effect by considering a size-invariant shape transformation, which changes the discrete energy spectra of strongly confined systems and causes the quantum shape effects. The size-invariant shape transformation is a geometric technique of transforming shapes by preserving the boundary curvature, topology, and the Lebesgue measure of a bounded domain.

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Objectives: COVID-19 infection is associated with an increased risk of acute ischemic stroke (AIS). Although the underlying mechanisms are largely unknown, autoimmunity has been implicated as a potential role player.

Methods: To investigate the presence and clinical impact of neuronal cell surface antibodies in COVID-19 associated AIS, patients with COVID-19 pneumonia and AIS ( = 30), COVID-19 pneumonia without AIS ( = 32) and AIS without COVID-19 infection ( = 27) were recruited.

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Interpretation of electrocardiographic changes after cardiac arrest is critical. If the electrocardiogram is consistent with ST-segment elevation myocardial infarction, primary coronary angiography is indicated. However, the presence of ST-segment depression in eight or more surface leads, together with ST-segment elevation in the aVR and/or V1, could be a sign of multivessel ischaemia or left main coronary artery disease if haemodynamic instability is present.

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Article Synopsis
  • The study compares clinical and radiological outcomes of two surgical techniques—intramedullary nailing (IMN) and plating—used to treat isolated fractures of the distal third of the ulna diaphysis in 54 patients between 2010 and 2016.
  • After analyzing factors like operating time and follow-up results, it found that IMN had a shorter median operation time (33 min) compared to plating (46 min).
  • Overall, IMN showed similar clinical outcomes and fewer cases requiring implant removal, making it a viable alternative to plating for these types of fractures.
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Background: The aim of this study is to compare clinically and radiologically the plate osteosynthesis method and the in-tramedullary nail (IMN) method, which is currently used in the surgical treatment of surgical neck proximal humerus fractures (PHFs) in which there is no consensus METHODS: A total of 248 patients who underwent PHF between January 2013 and December 2017 were retrospectively reviewed. Sixty-two patients were included in the study. The results were clinically compared in terms of the amount of blood loss, operative time, and union time.

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Background: Levosimendan has been reported to have a positive effect on ischemia-reperfusion injury. Herein, we aimed to evaluate the effects of levosimendan applied after reperfusion in an experimental intestinal injury-reperfusion (IR) model.

Methods: Twenty-one Wistar-albino male rats were separated into three groups: Sham group (n = 7): solely superior mesenteric artery (SMA) was dissected after laparotomy; intestinal ischemia-reperfusion group (IIR, n = 7): SMA was clamped for 60 min and unclamped for 120 min to cause ischemia-reperfusion; IIR + levosimendan group (IIR + L, n = 7): levosimendan was administered in ischemia-reperfusion model.

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Background: The aim of this study was to investigate the protective and therapeutic effects of bovine amniotic fluid (BAF) on the inhibition of epidural fibrosis (EF) after experimental laminectomy.

Methods: Forty female Sprague Dawley rats were used. The amniotic fluids were collected from each trimester of a pregnant cow.

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Objective: In many clinics, calculation and interpretation of neuropsychological test results, along with reporting, data organization and archiving of the data are done manually. In this era where most of the similar processes are automated, manual application may result in excessive time consumption, unnecessary use of qualified work-force, and is also open to error. A software that automates these processes for neuropsychological tests used for dementia assessment may overcome these issues.

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Background: Neurofilaments are intermediary filaments associated with neurodegenerative processes. Thrombospondin-1 (TSP-1) is a biological marker playing a role in synaptogenesis. This study aimed to investigate serum neurofilament light chain (NFL), and TSP1 levels of patients with autism spectrum disorder (ASD) compared to typically developing (TD) children.

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Objective: Chest X-rays are the most commonly performed diagnostic examinations. An artificial intelligence (AI) system that evaluates the images fast and accurately help reducing workflow and management of the patients. An automated assistant may reduce the time of interpretation in daily practice.

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Background: The aim of the study was to compare the clinical and radiological results of the Verbrugge minimally invasive technique used in AO/OTA 31-A2.2/A2.3 intertrochanteric fracture types with those of the closed reduction technique performed on a traction table.

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Candida glabrata is increasingly isolated from blood cultures, and multidrug-resistant isolates have important implications for therapy. This study describes a cholesterol-dependent clinical C. glabrata isolate (ML72254) that did not grow without blood (containing cholesterol) on routine mycological media and that showed azole and amphotericin B (AmB) resistance.

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Background: Wilkins modification of the Gartland classification (WMGC) type IIB supracondylar humeral fractures (SCHFs) are unstable, and their primary treatment is surgery. This study sought to evaluate the chance of closed reduction and long arm cast (CR&LAC) treatment of type IIB fractures.

Methods: In this retrospective case-control study, pediatric patients with WMGC type II fractures whose initial treatment was CR&LAC were examined.

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Background And Purpose: Prevalence of acute ische-mic stroke (AIS) is increased in patients with coronavirus disease 2019 (COVID-19). A proposed hypothesis is increased virus-induced propensity to hypercoagulation resulting in arterial thrombosis. Our aim was to provide evidence regarding the involvement of neutrophil extracellular trap (NET) formation (NETosis) in COVID-19 related AIS.

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Objective: High sympathetic nerve activity, is thought to be a cardiovascular risk factor, has been shown to correlate with circulating high testosterone levels. However its role on the pathophysiology of the polycystic ovarian syndrome has not been clearly established. The aim of our study is to compare the sympathetic nerve activity between polycystic ovarian syndrome and control group and to determine whether the use of oral contraceptives for contraception has any effect on this activity.

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Background: Intertrochanteric femoral fractures (IFF) are often seen in the elderly after a simple fall because of osteoporosis, and treatment is generally provided with proximal femoral nail (PFN). The complication of cut-out, which can develop as a result of PFN treatment of IFF, is a significant cause of morbidity. The aim of this study was to examine the risk factors for cut-out in cases treated with double proximal screw design nail (DPSDN).

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