Gregory Zegarek, MD

Private Neurosurgery and Spine Surgery Practice, Rue Georges-Jordil 4, Dr. Philippe Otten, Fribourg

Chief of Clinic, Orthopedics and Neurosurgery, HFR, Prof. Gianluca Maestretti, Fribourg.

Assistant Physician, Neurosurgery, Valais Hospital, Dr. Jean-Yves Fournier, Sion.

Resident Physician, Neurosurgery, University Hospitals of Geneva, Prof. Karl Schaller, Geneva.

Elective Internship Year: The University of Chicago, The University of Michigan, Montefiore Einstein Medical Center, New York.

Schmid, S. L., F. A. Krappel, G. F. Zegarek, W. A. Perrig, and S. S. Panev. "Extreme Lateral Interbody Fusion (XLIF) Including the Segment L5/S1 for Multi-level Lumbar Spondylodesis." Medicine and Clinical Science 5, no. 8 (2024).

Kindris, Florinella, Gregory Zegarek, Ferdinand A. Krappel, Wolfgang N. Perrig, and Samuel L. Schmid. "Spinal Versus General Anesthesia for Lumbar Decompression or Sequestrectomy in Patients Over 75 Years." Clinical spine surgery (2023).

Zegarek, Gregory, Enrico Tessitore, Etienne Chaboudez, Aria Nouri, Karl Schaller, and Renato Gondar. "SORG algorithm to predict 3-and 12-month survival in metastatic spinal disease: a cross-sectional population-based retrospective study." Acta Neurochirurgica 164, no. 10 (2022): 2627-2635.

Nouri, Aria, Julien Haemmerli, Alexandre Lavé, Pia Vayssiere, Paul Constanthin, Abdullah Al-Awadhi, Gregory Zegarek et al. "Current state of social media utilization in neurosurgery amongst European Association of Neurosurgical Societies (EANS) member countries." Acta Neurochirurgica 164, no. 1 (2022): 15-23.

Boëx, Colette, Cristina Goga, Nadia Bérard, Julien Haemmerli, Gregory Zegarek, Andrea Bartoli, Shahan Momjian, and Karl Schaller. "Introduction of a novel connection clip for the ultrasonic aspirator for subcortical continuous motor mapping." Brain and Spine 1 (2021): 100002.

Bernard, Florian, Julien Haemmerli, Gregory Zegarek, Daniel Kiss-Bodolay, Karl Schaller, and Philippe Bijlenga. "Augmented reality–assisted roadmaps during periventricular brain surgery." Neurosurgical Focus 51, no. 2 (2021): E4.

Fallegger, Florian, Giuseppe Schiavone, Elvira Pirondini, Fabien B. Wagner, Nicolas Vachicouras, Ludovic Serex, Gregory Zegarek et al. "MRI‐Compatible and conformal electrocorticography grids for translational research." Advanced Science 8, no. 9 (2021): 2003761.

Meling, Torstein R., Greg Zegarek, and Karl Schaller. "How I do it: retrosigmoid intradural inframeatal petrosectomy." Acta neurochirurgica 163, no. 3 (2021): 649-653.

d'Esneval, Mathilde, Gregory Zegarek, Deborah Pugin, Maria Isabel Vargas, Enrico Tessitore, and Serge Vulliemoz. "Giant lumbar pseudomeningocele compression mimicking stroke and seizure." Neurology: Clinical Practice 11, no. 5 (2021): e763-e765.

Moiraghi, Alessandro, Gregory Zegarek, Karl Schaller. “State of the Art of Intraoperative Ultrasound in Glioma Surgery.” World Federation of Neurological Societies Newsletter February 2019.

Zegarek, Gregory, Xerxes D. Arsiwalla, David Dalmazzo, and Paul FMJ Verschure. "Mapping the language connectome in healthy subjects and brain tumor patients." In International Conference on Artificial Neural Networks, pp. 83-90. Cham: Springer International Publishing, 2016.

Kwon, Munjin, José R. Fernández, Gregory F. Zegarek, Sean B. Lo, and Bonnie L. Firestein. "BDNF-promoted increases in proximal dendrites occur via CREB-dependent transcriptional regulation of cypin." Journal of Neuroscience 31, no. 26 (2011): 9735-9745.

Postgraduate Interdisciplinary Advanced Training Diploma in Spine Surgery (SSNC and SO)

Swiss Federal Postgraduate Title of Specialist in Neurosurgery

Swiss Federal Medical Diploma (CH)

Doctor of Medicine (MD), The University of Chicago Pritzker School of Medicine, Illinois (USA)

Bachelor’s Degree, Rutgers University, summa cum laude, New Jersey (USA)
Major Concentration: Molecular Biology and Biochemistry, Philosophy (highest honors)
Minor Concentration: Chemistry

Communications

- Zegarek G, Simonin A, Nuno Castro Fernandes G, Ziogas I, Fournier JY. Volumetric lumbar hernia analysis in endoscopic spine surgery: MRI-based prediction correlation with measured sequester size: A Technical Note. Swiss Society for Spinal Surgery Congress. August 2022. Geneva, Switzerland.

- Zegarek G, Catalano Chiuvé S, Isidor N, Wolff A, Burkhard P, Krack P, Schaller K, Momjian S, Corniola M. Effectiveness and reliability of hypnosis in Stereotaxy : A preliminary case-series. Sektionstagung Stereotaxie und Radiochirurgie der DGNC - Ihre Abstracteinreichung 2018. Berlin, Germany.

Posters

- Zegarek G, Fournier JY, Simonin A. Microsurgical dissection of a dorsal arachnoid web with D-wave intra-operative neuromonitoring: Technical note. Swiss Federation of Clinical Neuro-Societies 2022. Basel, Switzerland.

- Simonin A, Troxler S, Iselin S, Papdimitriou K, Al Taha K, Chaboudez E, Weman L, Zegarek G, Huscher K, Fournier JY. Reducing the learning curve of interlaminar full-endoscopic discectomy: Mushroom model-simulation training. Swiss Society for Spinal Surgery Congress. Geneva, Switzerland.

- Simonin A. Zegarek G, Fournier JY. Endoscopic interbody fusion with multidirectional expandible cage and navigated percutaneous fixation for L4-5 spondylolisthesis : technical note. Swiss Society for Spinal Surgery Congress. Geneva, Switzerland.

- Zegarek G, Tessitore E, Nouri A, Schaller K, Gondar R. SORG algorithm to predict 3- and 12-month survival in metastatic spinal disease: A Cross-Sectional Population-Based Retrospective Study. EuroSpine 2021. Vienna, Austria.

- Zegarek G, Tessitore E, Nouri A, Schaller K, Gondar R. SORG algorithm to predict 3- and 12-month survival in metastatic spinal disease: A Cross-Sectional Population-Based Retrospective Study. EANS Congress 2021. Hamburg, Germany.

- Zegarek G, Constanthin P, Fallegger F, Schiavone G, Vachicouras N, Serex L, Lacour S, Van Roost D, Schaller K. Advancing Soft Subdural Electrodes. eEANS 2020: Beyond Borders Virtual Congress.

- Zegarek G, May A, Constanthin P, Fallegger F, Vachicouras N, Schiavone G, Serex L, Bourely J, Vargas M, Lacour S, Van Roost D, Schaller K. Novel soft subdural electrodes versus standard clinical arrays: a comparative pilot cadaver study. EANS Congress 2019. Dublin, Ireland.

- Dalmazzo D, Arsiwalla X, Zucca R, Zegarek G, Verschure P. Developing BrainX3: Defining, filtering and visualizing temporal activity in human brain network dynamics using an interactive application, Universitat Pompeu Fabra. 2016. Barcelona, Spain.

- Zegarek G, Dalmazzo D, Brandi S, Grechuta K, Arsiwalla X, Verschure P. Mapping the Aphasia Connectome with BrainX3: Connectomic Predictions of TMS-Defined Eloquent Cortex, Neuroscience R&D Technologies Conference 2015. Barcelona, Spain.

- Zegarek G, Dalmazzo D, Brandi S, Grechuta K, Arsiwalla X, Verschure P.  Mapping the Aphasia Connectome: Connectomic Predictions of TMS-Defined Eloquent Cortex, Fourth DCEXS Symposium—Innovative in silico strategies in biomedical research. 2015. Barcelona, Spain.

- Brandi S, Dalmazzo D, Mediano P, van Wijngaarden J, Zegarek G. Modeling Temporal Lobe Epilepsy in the BrainX3, Universitat Pompeu Fabra. Barcelona, Spain.

- Zegarek G, Keedy S. Top-Down Attentional Control in Schizophrenia Patients, University of Chicago. 2013. Chicago, IL.

- Zegarek G, Kwon M, Firestein B. BDNF-promoted increases in proximal dendrites occurs via CREB-dependent transcriptional regulation of cypin, Rutgers University. 2012. Piscataway, NJ.Zegarek G, Kwon M, Firestein B. BDNF-promoted increases in proximal dendrites occurs via CREB-dependent transcriptional regulation of cypin, Rutgers University. 2012. Piscataway, NJ.

- Zegarek G, Kwon M, Fernández JR, Firestein B. The Effect of Global BDNF Treatment on the Dendritic Arbor, Rutgers University. 2010. New Brunswick, NJ, USA

- Zegarek G, Kwon M, Firestein B. The Role of CPE and NOS1AP in Neuronal Development, Rutgers University. 2009. New Brunswick, NJ, USA.