Publications by authors named "Petra Klinge"

Objective: Craniocervical junction morphology has been associated with Chiari malformation type I (CMI) symptom severity; however, little is known about its deterministic effect on surgical outcomes in patients across age and sex differences. The goal of the present study was to assess the effects of age and sex on surgical outcomes in CMI.

Methods: In the present study, the authors examined MRI-based morphometric data from 115 individuals diagnosed with CMI (54 adults including 39 women and 15 men, and 61 children including 24 girls and 37 boys) and correlated them with Chicago Chiari Outcome Scale (CCOS) scores obtained 1 year after posterior fossa decompression.

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  • Myelomeningocele (MMC) primarily impacts low-resource regions, especially where there is no mandatory folic acid fortification, but research on its neurosurgical management is concentrated in high-income countries (HICs).
  • A systematic review revealed that while HICs account for a small percentage of global neural tube defect cases, they dominate both authorship and patient representation in the research literature, with minimal contributions from lower-income countries.
  • Findings suggest a significant disparity in MMC research output relative to disease burden, highlighting an urgent need for increased scholarly attention and resource allocation in lower-income countries where MMC cases are more prevalent.
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In this prospective observational cohort study, we provide preliminary findings from a same-day multidisciplinary fast-tracked normal pressure hydrocephalus (NPH) clinic; incorporating the expertise of movement disorders neurologists, emphasizing the clinical characteristics, consensus classification, and management of patients referred for suspected NPH. We evaluated 111 patients (male/female: 67/44) from April 2022 to May 2023. Based on the multidisciplinary team consensus, 52 (46.

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  • The study investigates how effectively neurosurgical prenatal counseling (nPNC) is provided to families considering myelomeningocele (MMC) repair, focusing on the timing and factors influencing decisions on prenatal versus postnatal treatment.
  • Results show that 97% of families accessed nPNC, with 82% of consultations occurring before 24 weeks gestational age, and a significant number faced exclusions from fetal repair.
  • Most families ultimately chose between fetal repair, postnatal repair, or termination, with the main reasons for declining fetal repair being perceived risks and costs.
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Background And Purpose: Symptoms of normal pressure hydrocephalus (NPH) are sometimes refractory to shunt placement, with limited ability to predict improvement for individual patients. We evaluated an MRI-based artificial intelligence method to predict postshunt NPH symptom improvement.

Materials And Methods: Patients with NPH who underwent MRI before shunt placement at a single center (2014-2021) were identified.

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Hydrocephalus is classically considered as a failure of cerebrospinal fluid (CSF) homeostasis that results in the active expansion of the cerebral ventricles. Infants with hydrocephalus can present with progressive increases in head circumference whereas older children often present with signs and symptoms of elevated intracranial pressure. Congenital hydrocephalus is present at or near birth and some cases have been linked to gene mutations that disrupt brain morphogenesis and alter the biomechanics of the CSF-brain interface.

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Objective: Tethered cord syndrome (TCS) comprises three symptom categories: back/leg pain, bowel/bladder, and neurological complaints. MRI typically reveals a low-lying conus medullaris, filum terminale (FT) pathology, or lumbosacral abnormalities. FT resection is established in TCS but not in radiologically occult TCS (OTCS).

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  • * Results showed that a vast majority (97.6%) of the FT samples contained peripheral nerves, while other notable findings included ependymal cell linings, cysts, ganglion cells, and vascular elements; 41% exhibited fatty infiltration.
  • * The presence of inflammatory infiltrates and calcifications in some specimens suggests structural changes in the FT, which may be linked to the pathology of TCS, indicating altered mechanics and potential venous congestion.
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In the present study we report the relationship among MRI-based skull and cervical spine morphometric measures as well as symptom severity (disability-as measured by Oswestry Head and Neck Pain Scale and social isolation-as measured by the UCLA Loneliness scale) on biomarkers of allostatic load using estrogen, interleukin-6, C-reactive protein, and cortisol in a sample of 46 CMI patients. Correlational analyses showed that McRae line length was negatively associated with interleukin-6 and C-reactive protein levels, and Analysis of Variance (ANOVA) showed joint effects of morphometric measures (McRae line length, anterior CSF space) and symptom severity (disability and loneliness) on estrogen and intereukin-6 levels. These results are consistent with allostatic load.

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Introduction: Falls from cribs resulting in head injury are understudied and poorly characterized. The purpose of this study was to advance current understanding of the prevalence, descriptive characteristics of injury victims, and the types of crib fall-related head injuries (CFHI) using queried patient cases from the National Electronic Injury Surveillance System (NEISS) database.

Methods: Using the US Consumer Product Safety Commission's System NEISS database, we queried all CFHIs among children from over 100 emergency departments (EDs).

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  • Advances in technologies and the 2011 MOMS trial have shifted myelomeningocele repair (MMCr) practices, yet postnatal procedures are still common due to factors like prenatal diagnosis limitations and personal preference.
  • A study analyzing postnatal MMCr trends from 2000-2019 found a gradual decline in operations after 2011, with increasing prevalence among Medicaid and low-income patients, highlighting ongoing disparities.
  • By 2019, there was a convergence in race/ethnicity-adjusted rates, with no significant change in mortality rates or lower post-MOMS shunting during the same admission.
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Molecular biomarkers for neurodegenerative diseases are critical for advancing diagnosis and therapy. Normal pressure hydrocephalus (NPH) is a neurological disorder characterized by progressive neurodegeneration, gait impairment, urinary incontinence and cognitive decline. In contrast to most other neurodegenerative disorders, NPH symptoms can be improved by the placement of a ventricular shunt that drains excess CSF.

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A series of epidemiological studies have shown the limited life expectancy of patients suffering from idiopathic normal pressure hydrocephalus (iNPH). In most cases, comorbid medical conditions are the cause of death, rather than iNPH. Though it has also been shown that shunting improves both life quality and lifetime.

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  • The study focuses on the management of Chiari malformation type I (CM-I) and specifically examines the intraoperative findings during posterior fossa decompression with duraplasty (PFDD) to improve cerebrospinal fluid (CSF) flow, revealing numerous intradural pathologies that contribute to CSF obstruction.
  • Researchers analyzed data from 180 patients (adults and children) who underwent PFDD from 2011 to 2021, identifying an average of 7 unique intradural findings per patient, including significant observations like vascular compression and various types of arachnoid abnormalities.
  • Notably, children experienced different incidences of specific conditions such as tonsillar gli
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Introduction: The use of all-terrain vehicles (ATVs) carries significant risk of permanent injury and death, disproportionately affecting children. These injuries commonly affect the head and are especially severe among children as they are often unhelmeted and more likely than adults to experience rollover injuries. Many studies examining patients with ATV-related injuries are single-center cohort studies, with few focusing specifically on head injuries.

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Tethered cord syndrome (TCS) is characterized by leg pain and weakness, bladder and bowel dysfunction, orthopedic malformations such as scoliosis, and motor deficits caused by the fixation of the spinal cord to surrounding tissues. TCS is surgically treatable and often found in conjunction with other syndromic conditions. KBG syndrome is caused by variants in the ANKRD11 gene and is characterized by short stature, developmental delay, macrodontia, and a triangular face.

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  • * This obstruction not only impedes CSF movement but can also disrupt the support structures of the spinal cord at the craniocervical junction, which play crucial roles in maintaining stability and integrity.
  • * The study suggests that the obstruction and altered CSF dynamics may lead to further complications in cranio-spinal support, and includes visual evidence from surgeries to underscore these points.
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Objective: Alzheimer's disease (AD) is highly comorbid with idiopathic normal pressure hydrocephalus (iNPH) and may diminish the benefits of shunting; however, findings in this area are mixed. We examined postoperative outcomes, with emphases on cognition and utilization of novel scoring procedures to enhance sensitivity.

Methods: Using participant data from an iNPH outcome study at Butler Hospital, a mixed effect model examined main and interaction effects of time since surgery (baseline, 3 months, 12 months, and 24-60 months) and AD comorbidity (20 iNPH and 11 iNPH+AD) on activities of daily living (ADLs) and iNPH symptoms.

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Spontaneous reossification following a cranial defect is described by only a few case reports. A 6-month-old male with epidural hematoma underwent decompressive craniotomy, subsequently complicated by scalp abscess requiring removal of the bone flap. On serial outpatient follow-up, the patient demonstrated near-complete resolution of cranial defect over the course of 18 months, thus deferring the need for future cranioplasty.

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It has been well demonstrated that the cerebellum is associated with cognitive and affective processing as well as the traditionally conceptualized motor function. In the present chapter, we explore the behavioral and neurobiological implications of a common congenital cerebellar condition, Chiari malformation Type I, on cognitive and affective processing. We also emphasize the associations between Chiari-related chronic pain, cognitive dysfunction, and emotion dysregulation.

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Background: Neural components of the fibrous filum terminale (FT) are well known but are considered as embryonic remnants without functionality.

Objective: To investigate the ultrastructure of human FT specimens for sensory nerve endings and record paraspinal muscle activity on electrostimulation of the FT.

Methods: We prospectively investigated a cohort of 53 patients who underwent excision of the FT for the treatment of tethered cord syndrome.

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Objective: Autologous cranioplasty (CP) following decompressive craniectomy (DC) carries a risk of bone flap resorption (BFR). The current literature offers limited information regarding the natural progression of BFR and the rate at which it occurs. We aim to characterize the progression of BFR over time and elucidate risk factors for accelerated BFR.

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Objective: Normal pressure hydrocephalus (NPH) and degenerative cervical myelopathy (DCM) can each lead to gait dysfunction and urinary incontinence and may occur concurrently in some patients. In patients presenting with NPH and DCM, there is a paucity of literature describing the medical and surgical complications of treatment and the potential consequences of the sequence of surgical procedures. The aim of this study is to evaluate patients with DCM, NPH, and dual pathology to determine epidemiology and how the order of surgical intervention for both conditions may impact complications and patient outcomes.

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Background: Patients with hypermobile Ehlers-Danlos syndrome (hEDS), a heritable connective tissue disorder, present frequently with symptoms of tethered cord syndrome (TCS) but without a low-lying conus. Currently, surgical treatment of such cases is controversial. Because connective tissue disorder affects fibrous structures, we hypothesized that a diseased filum terminale (FT) might cause TCS in hEDS, justifying surgical transection for treatment.

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