Publications by authors named "Mohamed Khlif"

Introduction And Importance: Ipsilateral proximal and distal radius fractures without elbow dislocation are extremely rare injuries and a few cases have been reported. Currently, there is no well-established consensus regarding their optimal management.

Case Presentation: We report the case of a 57-year-old woman who had a right bipolar radius fracture after falling from a standing height.

View Article and Find Full Text PDF
Article Synopsis
  • The text discusses a rare case of a human pathogen that typically causes skin and soft tissue infections but can also lead to bone infections, particularly after open fractures in water environments.
  • It details an 18-year-old patient who developed a hematogenous infection after surgeries for spinal fractures linked to an aquatic accident.
  • The patient underwent surgical cleaning and a tailored three-week antibiotic treatment, and after six months, showed no signs of a recurring infection, suggesting the infection likely spread through the bloodstream.
View Article and Find Full Text PDF

Deficits in memory performance have been linked to a wide range of neurological and neuropsychiatric conditions. While many studies have assessed the memory impacts of individual conditions, this study considers a broader perspective by evaluating how memory recall is differentially associated with nine common neuropsychiatric conditions using data drawn from 55 international studies, aggregating 15,883 unique participants aged 15-90. The effects of dementia, mild cognitive impairment, Parkinson's disease, traumatic brain injury, stroke, depression, attention-deficit/hyperactivity disorder (ADHD), schizophrenia, and bipolar disorder on immediate, short-, and long-delay verbal learning and memory (VLM) scores were estimated relative to matched healthy individuals.

View Article and Find Full Text PDF

Introduction Tuberculosis of the soft tissues is a rare form of extra pulmonary tuberculosis, and isolated localization in the popliteal fossa is particularly exceptional. Atypical clinical presentation can lead to delayed diagnosis and serious complications. Case report We report the case of a 17-year-old patient who was diagnosed with tuberculosis of the popliteal fossa.

View Article and Find Full Text PDF

Background And Objectives: Motor outcomes after stroke relate to corticospinal tract (CST) damage. The brain leverages surviving neural pathways to compensate for CST damage and mediate motor recovery. Thus, concurrent age-related damage from white matter hyperintensities (WMHs) might affect neurologic capacity for recovery after CST injury.

View Article and Find Full Text PDF
Article Synopsis
  • Vertebral osteomyelitis causes damage to the spine's discs and vertebrae, leading to deformities that upset the spine's balance, and brace immobilization is intended to minimize long-term damage.
  • A 10-year study of 31 patients indicated that while vertebral compression was notably higher in thoracic cases at diagnosis, overall brace immobilization showed more significant benefits in the lumbar region, especially for patients weighing up to 70 kg.
  • MRI results before and after immobilization revealed slight changes in segment angles and kyphosis, but 92% of patients maintained stable lumbar lordosis, indicating a potential positive effect of brace treatment in this condition.
View Article and Find Full Text PDF

Motor outcomes after stroke relate to corticospinal tract (CST) damage. Concurrent damage from white matter hyperintensities (WMHs) might impact neurological capacity for recovery after CST injury. Here, we evaluated if WMHs modulate the relationship between CST damage and post-stroke motor impairment outcome.

View Article and Find Full Text PDF

White matter hyperintensities (WMHs) are a risk factor for stroke. Consequently, many individuals who suffer a stroke have comorbid WMHs. The impact of WMHs on stroke recovery is an active area of research.

View Article and Find Full Text PDF

Diffusion-weighted imaging has been widely used in the research on post-stroke verbal fluency but acquiring diffusion data is not always clinically feasible. Achieving comparable reliability for detecting brain variables associated with verbal fluency impairments, based on more readily available anatomical, non-diffusion images (T1, T2 and FLAIR), enables clinical practitioners to have complementary neurophysiological information at hand to facilitate diagnosis and treatment of language impairment. Meanwhile, although the predominant focus in the stroke recovery literature has been on cortical contributions to verbal fluency, it remains unclear how subcortical regions and white matter disconnection are related to verbal fluency.

View Article and Find Full Text PDF

Background And Objectives: Functional outcomes after stroke are strongly related to focal injury measures. However, the role of global brain health is less clear. In this study, we examined the impact of brain age, a measure of neurobiological aging derived from whole-brain structural neuroimaging, on poststroke outcomes, with a focus on sensorimotor performance.

View Article and Find Full Text PDF

Background And Objectives: Cerebral white matter health can be estimated by MRI-derived indices of microstructure. White matter dysfunction is increasingly recognized as a contributor to neurodegenerative disorders affecting cognition and to functional outcomes after stroke. Reduced indices of white matter microstructure have been demonstrated cross-sectionally in stroke survivors compared with stroke-free participants, but longitudinal changes in the structure of white matter after stroke remain largely unexplored.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers in neuroscience are using Big Data to improve the reliability and replication of cognitive studies, focusing on memory testing.
  • They conducted a mega-analysis with data from 53 studies, involving over 10,500 individuals, employing methods to harmonize data and reduce variability across different sites.
  • Their findings show that large-scale data sharing can enhance the reproducibility of research in behavioral sciences, and they offer a free conversion tool for this purpose.
View Article and Find Full Text PDF

Poor performance on verbal fluency tasks is associated with an increased risk of post-stroke cognitive impairment. Grey matter regions supporting verbal fluency have been identified via lesion-symptom mapping, but the links between verbal fluency and white matter structure remain less well described. We examined white matter correlates of semantic (Category Fluency Animals) and phonemic or lexical fluency (COWAT FAS) after stroke, accounting for stroke severity measured with the National Institutes of health Stroke Scale (NIHSS), age, sex, and level of education.

View Article and Find Full Text PDF

Background And Objective: In newborns, it is often difficult to accurately differentiate between seizure and non-seizure based solely on clinical manifestations. This highlights the importance of electroencephalogram (EEG) in the recognition and management of neonatal seizures. This paper proposes an effective algorithm for the detection of neonatal seizure using multichannel EEG.

View Article and Find Full Text PDF
Article Synopsis
  • Accurate lesion segmentation is essential for quantifying stroke-related damage and improving image processing, but current automated methods for T1-weighted MRIs remain unreliable.
  • Manual segmentation is the standard but is labor-intensive and requires specialized knowledge.
  • The newly released ATLAS v2.0 dataset, which includes 1,271 T1-weighted MRIs and segmented lesion masks, aims to enhance algorithm development and provide better evaluation through hidden datasets for more effective stroke research.
View Article and Find Full Text PDF

Background Persistent sensorimotor impairments after stroke can negatively impact quality of life. The hippocampus is vulnerable to poststroke secondary degeneration and is involved in sensorimotor behavior but has not been widely studied within the context of poststroke upper-limb sensorimotor impairment. We investigated associations between non-lesioned hippocampal volume and upper limb sensorimotor impairment in people with chronic stroke, hypothesizing that smaller ipsilesional hippocampal volumes would be associated with greater sensorimotor impairment.

View Article and Find Full Text PDF

Purpose: White matter hyperintensities (WMHs) are associated with poststroke cognitive decline and mortality. Physical activity (PA) may decrease WMH risk by reducing vascular risk factors and promoting cerebral perfusion. However, the association between poststroke PA and WMH progression remains unclear.

View Article and Find Full Text PDF

Dynamic whole-brain changes occur following stroke, and not just in association with recovery. We tested the hypothesis that the presence of a specific behavioural deficit after stroke would be associated with structural decline (atrophy) in the brain regions supporting the affected function, by examining language deficits post-stroke. We quantified whole-brain structural volume changes longitudinally (3-12 months) in stroke participants with ( = 32) and without aphasia ( = 59) as assessed by the Token Test at 3 months post-stroke, compared with a healthy control group ( = 29).

View Article and Find Full Text PDF

Background And Purpose: The evolution of total brain volume early after stroke is not well understood. We investigated the associations between age and imaging features and brain volume change in the first month after stroke.

Methods: We retrospectively studied patients with acute ischemic stroke enrolled in the AXIS-2 trial.

View Article and Find Full Text PDF

Background: The structural integrity of hippocampal subfields has been investigated in many neurological disorders and was shown to be better associated with cognitive performance than whole hippocampus. In stroke, hippocampal atrophy is linked to cognitive impairment, but it is unknown whether the hippocampal subfields atrophy differently.

Purpose: To evaluate longitudinal hippocampal subfield atrophy in first year poststroke, in comparison with atrophy in healthy individuals.

View Article and Find Full Text PDF

Up to two-thirds of stroke survivors experience persistent sensorimotor impairments. Recovery relies on the integrity of spared brain areas to compensate for damaged tissue. Deep grey matter structures play a critical role in the control and regulation of sensorimotor circuits.

View Article and Find Full Text PDF

Stroke survivors are at high risk of dementia, associated with increasing age and vascular burden and with pre-existing cognitive impairment, older age. Brain atrophy patterns are recognised as signatures of neurodegenerative conditions, but the natural history of brain atrophy after stroke remains poorly described. We sought to determine whether stroke survivors who were cognitively normal at time of stroke had greater total brain (TBV) and hippocampal volume (HV) loss over 3 years than controls.

View Article and Find Full Text PDF

Background And Objective: Significant health care resources are allocated to monitoring high risk pregnancies to minimize growth compromise, reduce morbidity and prevent stillbirth. Fetal movement has been recognized as an important indicator of fetal health. Studies have shown that 25% of pregnancies with decreased fetal movement in the third trimester led to poor outcomes at birth.

View Article and Find Full Text PDF

Introduction: Hippocampal subfield volumes are more closely associated with cognitive impairment than whole hippocampal volume in many diseases. Both memory and whole hippocampal volume decline after stroke. Understanding the subfields' temporal evolution could reveal valuable information about post-stroke memory.

View Article and Find Full Text PDF

Objective/background: Sleep-wake dysfunction is bidirectionally associated with the incidence and evolution of acute stroke. It remains unclear whether sleep disturbances are transient post-stroke or are potentially enduring sequelae in chronic stroke. Here, we characterize sleep architectural dysfunction, sleep-respiratory parameters, and hemispheric sleep in ischemic stroke patients in the chronic recovery phase compared to healthy controls.

View Article and Find Full Text PDF