Renato Gondar

Renato Gondar
Clinique Générale Beaulieu · Neuro and Spine Surgery

Doctor of Medicine

About

33
Publications
4,139
Reads
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221
Citations
Introduction
Skills and Expertise
Additional affiliations
November 2018 - October 2019
Hôpital Fribourgeois
Position
  • Consultant
Description
  • Neuro and Spine Surgeon
November 2016 - October 2018
Inselspital, Universitätsspital Bern
Position
  • Medical Doctor
April 2012 - October 2016
Hôpitaux Universitaires de Genève
Position
  • Medical Doctor
Education
September 2019 - September 2020
Université de Fribourg
Field of study
  • Medical Sciences
September 2003 - December 2010
Hospital de São João
Field of study
  • Medical sciences

Publications

Publications (33)
Article
Full-text available
Purpose In this study, we wished to compare statistically the novel SORG algorithm in predicting survival in spine metastatic disease versus currently used methods. Methods We recruited 40 patients with spinal metastatic disease who were operated at Geneva University Hospitals by the Neurosurgery or Orthopedic teams between the years of 2015 and 2...
Article
Full-text available
Introduction Degenerative cervical myelopathy (DCM) is the most common cause of spinal cord impairment. Unfortunately, the condition remains poorly recognised and underdiagnosed. To better identify patients, screening tests that target individuals at high risk would be helpful. One group in particular known to have a high prevalence of DCM consists...
Article
Background and purpose: In previous studies, women had a higher risk of rupture of intracranial aneurysms than men, but female sex was not an independent risk factor. This may be explained by a higher prevalence of patient- or aneurysm-related risk factors for rupture in women than in men or by insufficient power of previous studies. We assessed s...
Article
Full-text available
The cervicothoracic junction (CTJ) is a region of the spine submitted to significant mechanical stress. The peculiar anatomical and biomechanical characteristics make posterior surgical stabilization of this area particularly challenging. We present and discuss our surgical series highlighting the specific surgical challenges provided by this regio...
Article
Full-text available
Introduction Incidence of Chronic Subdural Hematoma (cSDH) is rising worldwide, partly due to an aging population, but also due to increased use of antithrombotic medication. Many recent studies have emerged to address current cSDH management strategies. Research question What is the state of the art of cSDH management. Material and methods Revie...
Preprint
Full-text available
In this study, we recruited 40 patients with spinal metastatic disease who were operated at Geneva University Hospitals by the Neurosurgery or Orthopedic teams between the years of 2015 and 2020. We did an ROC analysis in order to determine the accuracy of the SORG ML algorithm and nomogram versus the Tokuhashi Original and Revised Scores. The anal...
Article
Full-text available
Foramen magnum meningiomas (FMMs) account for 1.8–3.2% of all meningiomas. With this systematic review and meta-analysis, our goal is to detail epidemiology, clinical features, surgical aspects, and outcomes of this rare pathology. Using PRISMA 2015 guidelines, we reviewed case series, mixed series, or retrospective observational cohorts with descr...
Conference Paper
Full-text available
Background: Foramen magnum meningiomas entails 1.8–3.2% of all meningiomas. With this paper, our aim is to detail epidemiology, clinical aspects, and surgical outcomes of this pathology. Methods: Using PRISMA 2015 guidelines, we reviewed retrospective observational cohorts, case series or mixed series describing patient and lesion characteristics,...
Article
Full-text available
PurposeSpontaneous intracranial or intrathecal hypotension (SIH) is an underdiagnosed phenomenon predominantly presenting with low cerebrospinal fluid (CSF) pressure and postural headache in the setting of CSF leak. Extrathecal CSF collections causing compression of the spinal cord or nerve roots present an even rarer subset of this disease. We aim...
Article
Full-text available
Background: In recent years, several studies have reported abnormal pre- and postoperative neuropsychological functioning in patients with meningiomas located in the prefrontal cortex (notably the ventromedial region). In the case of olfactory groove meningiomas, the tumor is in direct contact with the inferior aspect of the prefrontal cortex, a c...
Article
Background: The Evaluation of Nitrous Oxide in the Gas Mixture for Anesthesia (ENIGMA)-I and ENIGMA-II were randomized clinical trials that assessed the safety of nitrous oxide anesthesia in patients undergoing noncardiac surgery. In this study, we performed an exploratory pooled analysis of both ENIGMA trials to assess the safety of nitrous oxide...
Article
Full-text available
Clinical outcomes after surgery for intracranial meningiomas might be overvalued as cognitive dimensions and quality of life are probably underreported. This review aims to summarize the current state of cognitive screening and treatment-related outcomes after meningioma surgery. We present a systematic review (Preferred Reporting Items for Systema...
Preprint
Full-text available
Objectives: The cervicothoracic junction (CTJ) is a region of the spine submitted to significant mechanical stress. The peculiar anatomical and biomechanical characteristics make posterior surgical stabilization of this area particularly challenging. We present and discuss our surgical series highlighting the specific surgical challenges provided b...
Article
Objective The objective of this study was to determine the performance of the standard alarm criterion of motor evoked potentials (MEPs) of the facial nerve in surgeries performed for resections of vestibular schwannomas or of other lesions of the cerebellopontine angle. Methods This retrospective study included 33 patients (16 with vestibular schw...
Article
Full-text available
Study Design This was a systematic review and meta-analysis. Objectives Degenerative cervical myelopathy (DCM) with spondylolisthesis remains not well defined, poorly studied, and underreported and plays a minor role in the therapeutic decision-making. Spondylolisthesis, however, is not uncommon and may result in dynamic injury to the spinal cord....
Article
Full-text available
A, Stauffer E, Otten P, et al. Traumatic vertebral fracture withcoexisting enchondroma: a case-report. Clin Case Rep J. 2020;1(6):1-7. Abstract Enchondroma of the vertebral spine is a rare clinical entity. For symptomatic enchondroma, surgical resection is the treatment of choice. Here we present the atypical case of a patient with non-symptomatic...
Article
Full-text available
Background Work-related musculoskeletal disorders (WMSDs) are a growing and probably undervalued concern for neurosurgeons and spine surgeons, as they can impact their quality of life and career length. This systematic review aims to ascertain this association and to search for preventive measures. Methods We conducted a PRISMA-P based review on e...
Article
Full-text available
Degenerative Cervical Myelopathy (DCM) is the most common cause of spinal cord injury in the world, but despite this, there remains many areas of uncertainty regarding the management of the condition. This special issue was dedicated to presenting current research topics in DCM. Within this issue, 12 publications are presented, including an introdu...
Article
Background: Intracranial arteriovenous malformations (AVMs) are rare lesions that can be congenital or acquired in early childhood, with fatal outcome in approximately 30% of cases. De novo formation during adulthood without established predisposing vascular pathology or previous brain insult is even less frequent. Case description: We present a...
Article
Full-text available
Background and purpose: Hemodynamics play a driving role in the life cycle of brain aneurysms from initiation through growth until eventual rupture. The specific factors behind aneurysm growth, especially in small aneurysms, are not well elucidated. The goal of this study was to differentiate focal versus general growth and to analyze the hemodyna...
Article
Full-text available
Pathogenesis of intracranial aneurysm is complex and the precise biomechanical processes leading to their rupture are uncertain. The goal of our study was to characterize the aneurysmal wall histologically and to correlate histological characteristics with clinical and radiological factors used to estimate the risk of rupture. A new biobank of aneu...
Article
Full-text available
Background and Purpose—The aim of this study is to assess whether the PHASES score allows to (1) match decisions taken by multidisciplinary team whether to observe or intervene, (2) classify patients being diagnosed with a ruptured versus unruptured intracranial aneurysm (UIA), and (3) discriminate patients at low risk of rupture from the populatio...
Article
Full-text available
Background: The management of Small-Unruptured Incidentally discovered Intracranial Aneurysms (SUIAs) is still controversial. The aim of this study is to assess the safety of a management protocol of SUIAs, where selected cases with SUIAs are observed and secured only if signs of instability (growth) are documented. Methods: A prospective consecuti...
Article
Endoscopic third ventriculostomy (ETV) is an ideal treatment for obstructive hydrocephalus. Although ETV is a safe procedure, several complications related to this procedure have been reported in the literature. We present a rare case of late onset symptomatic bilateral subdural hematoma after an uneventful ETV that proved particularly difficult to...
Article
Full-text available
Despite progress in the understanding of risk factors for aneurysm rupture, the decision whether or not to treat an unruptured intracranial aneurysm (UIA) should be treated remains a challenge. A multidisciplinary team of neurovascular surgeons and interventional radiologists with broad experience in the field should make this decision under critic...
Article
Background: The natural history of unruptured incidentally discovered intracranial aneurysms (UIA) remains unpredictable. Therefore, when asymptomatic, the management remains subject of controversy. PHASES score¹ was recently proposed for prediction of 5-year risk of rupture of UIA. Methods: The aim of this study is to validate the PHASES score us...

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Projects

Project (1)
Project
Establish shape as a biomarker to categorize and model the intracranial aneurysm disease. The project builds the infrastructure to collect and manage clinical information including genetics and images provided by multiples sources on a single global platform. Systematically quantifies cellular reaction to relevant physical stimuli. Studies physiological and pathological vessel wall remodeling Develops a pathway and statistical model of the disease