Dr. Niknejad works as a neurosurgeon at the UMC Utrecht, specializing in microsurgery and, in particular, cerebrovascular surgery. In addition, he is active within the Spine Unit of UMC Utrecht, providing complex spinal care. Within Acibadem, he is a member of the International Spine Center Amsterdam, where he treats patients with spinal disorders.
“For my patients, I strive to deliver care at the highest level. Careful surgical technique is only one aspect of this. A precise surgical indication, the use of relevant and modern surgical techniques, and the continuous expansion of (international) experience all contribute to achieving the best possible outcome.”
Specialization/areas of interest
• Cervical herniated disc (cervical discectomy)
• Cervical laminoplasty for spinal canal stenosis
• Minimally invasive spinal surgery
• Spinal instrumentation
Languages
Dutch, French, English, Farsi
Work experience
- 2025 – present Neurosurgeon, International Spine Center Amsterdam (ISCA), Acibadem
- 2023 – 2024 Spine Fellowship – UMC Utrecht
- 2022 – present Neurosurgeon – UMC Utrecht
- 2020 Neuroendovascular surgery training, Prof. Dr. L. Spelle and Prof. Dr. J. Moret, Centre NEURI, Paris, France
- 2014 – 2020 Neurosurgical training, University Hospitals Leuven, Belgium, Prof. J. van Loon
Education
- 2019 – present PhD in Neuroscience
- 2014 – 2020 Neurosurgical training, University Hospitals Leuven, Belgium, Prof. J. van Loon
- 2007 – 2014 Medicine (magna cum laude), KU Leuven
Additional Activities
• Co-founder of Perfusi BV, a medical start-up developing intraoperative perfusion techniques
• Member of the Dutch Society for Neurosurgery (NVvN)
• Member of the European Association of Neurosurgical Societies (EANS)
Publications
de Rooij M, van der Boog ATJ, Carter SH, Robe PAJT, van der Zwan A, Niknejad HR: Clinical Outcome of Redo-Surgery for Recurrent Chronic Subdural Hematoma: A Systematic Review and Meta-Analysis Combined with a Case Series. World Neurosurg 2025.
Niknejad HR, Huang Y, Auricchio AM, van der Zwan A, Mischi M: Intraoperative cerebral perfusion monitoring with ultrafast power doppler imaging. Sci. Rep 2025.
Lambert T, Niknejad HR, Kil D, Brunner C, Nuttin B, Montaldo G, Urban A: Functional ultrasound imaging and neuronal activity: how accurate is the spatiotemporal match? Imaging Neuroscience 2025.
Lambert T, Niknejad HR, Kil D, Brunner C, Nuttin B, Montaldo G, Urban A: Functional ultrasound imaging and neuronal activity: How accurate is the spatiotemporal match? eNeuro 2025.
Aguiar GB, Ozanne A, Elawady A, Samoyeau T, Niknejad HR, Caroff J, Vergara Martinez J, Mihalea C, Gallas S, Chalumeau V, Ikka L, Moret J, Spelle L: Intracranial Aneurysm in the Pediatric Population: A Single-center Experience. Pediatr. Neurosurg 2021.
Niknejad HR, Frederickx M, Salaets E, Lemiere J, Lagae L and Van Calenbergh F: Long Term Outcomes of Patients with Hydrocephalus Secondary to Tectal Plate Glioma vs Idiopathic Aqueductal Stenosis – Results from a Single Center. Pediatr. Neurosurg Feb 2021.
Niknejad HR, Stockx L, Wuyts J. Minimally Invasive Aneurysm Clipping: The Extent of the Supraorbital Approach. World Neurosurg Apr 2019.
