Nikolaos Gkantsinikoudis

Dr. Nikolaos Gkantsinikoudis

orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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8 August 2022 in Tissue Engineering Part B: Reviews
Verified
Journal Article
Closed access
Nikolaos GkantsinikoudisNikolaos Gkantsinikoudis
Nikolaos Gkantsinikoudis
SKStylianos Kapetanakis
Stylianos Kapetanakis
IMIoannis Magras
Ioannis Magras
ETEleftherios Tsiridis
Eleftherios Tsiridis
AKAristeidis Kritis
Aristeidis Kritis
Intervertebral disc (IVD) represents a structure of crucial structural and functional importance for human spine. Pathology of IVD institutes a frequently encountered condition in current clinical practice. Degenerative disc disease (DDD), the principal clinical representative of IVD pathology, constitutes an increasingly diagnosed spinal disorder associated with substantial morbidity and mortality in recent years. Despite the considerable incidence and socioeconomic burden of DDD, existing treatment modalities including conservative and surgical methods have been demonstrated to provide a limited therapeutic effect, being not capable of interrupting or reversing natural progress of underlying disease. These limitations underline the requirement for development of novel, innovative, and more effective therapeutic strategies for DDD management. Within this literature framework, compromised IVD replacement with a viable IVD construct manufactured with tissue-engineering (TE) methods has been recommended as a promising therapeutic strategy for DDD. Existing preliminary preclinical data demonstrate that proper combination of cells from various sources, different scaffold materials, and appropriate signaling molecules renders manufacturing of whole-IVD tissue-engineered constructs a technically feasible process. The aim of this narrative review was to critically summarize current published evidence regarding particular aspects of IVD-TE, primarily emphasizing in providing researchers in this field with practicable knowledge to enhance clinical translatability of their research and informing clinical practitioners about the features and capabilities of innovative TE science in the field of IVD-TE. Impact Statement: Human intervertebral disc (IVD) pathology represents an extremely frequent condition in current clinical practice. Given the considerable limitations of available treatment options, deployment of novel and groundbreaking therapeutic modalities constitutes a rather urgent need. Tissue engineering of entire human IVD, a technically feasible process within laboratory framework, is theoretically capable of overcoming limitations that characterize currently applied therapeutic measures. Optimization of laboratory manufacturing techniques in conjunction with more diligent in vivo evaluation of tissue-engineered constructs are expected to lay the foundations for clinical trials initiation.

13 August 2024 in Brain and Spine
Verified
Journal Article
Open access
Nikolaos GkantsinikoudisNikolaos Gkantsinikoudis
Nikolaos Gkantsinikoudis
IHIftakher Hossain
Iftakher Hossain
NMNiklas Marklund
Niklas Marklund
PTParmenion P. Tsitsopoulos
Parmenion P. Tsitsopoulos
A subgroup of severe Traumatic Brain Injury (TBI) patients, known as ultra-severe (us-TBI), is most commonly defined as a post-resuscitation Glasgow Coma Scale (GCS) of 3-5. There is uncertainty on whether these critically injured patients can benefit from neurosurgical intervention. The available evidence regarding the decision-making and outcome following management of us-TBI patients is critically reviewed. Selected databases (PubMed, Google Scholar, Scopus and Cochrane Library) were searched from 1979 to May 2024 for publications on us-TBI patients, with a focus on treatment strategy, mortality and functional outcomes. Inclusion criteria were adult patients >18 years old with closed head trauma and admission post-resuscitation GCS 3-5. Studies were independently assessed for inclusion by two reviewers, and potential disagreements were solved by consensus. Where such data could be extracted, mortality rate was 27-100%, and favorable outcome was observed in 4-30% of us-TBI patients. While early aggressive neurosurgical management was associated with decreased mortality, a high proportion of patients survived with unfavorable functional status. With supportive care only, outcome of patients with us-TBI is almost universally poor. Early and aggressive neurosurgical intervention in addition to best medical management can lead to favorable functional outcome in selected cases particularly in younger patients with an initial GCS>3 and traumatic mass lesions. There is insufficient data regarding the effectiveness of neurosurgical management on the outcome of us-TBI patients. and the decision to initiate treatment should be based on an individual basis.

28 February 2025 in Asian Spine Journal
Verified
Journal Article
Open access
PDF file
SKStylianos Kapetanakis
Stylianos Kapetanakis
KGKrikor Gkoumousian
Krikor Gkoumousian
Nikolaos GkantsinikoudisNikolaos Gkantsinikoudis
Nikolaos Gkantsinikoudis
CCConstantinos Chaniotakis
Constantinos Chaniotakis
Study Design: The lumbosacral transitional vertebrae (LSTV) in patients with Bertolotti syndrome (BS) cause alterations in the biomechanics of the lumbosacral junction. These entities have been associated with secondary conditions, such as lumbar disc herniation (LDH).Purpose: To investigate the clinical outcomes of microdiscectomy in patients with symptomatic LDH and BS. Overview of Literature: There is limited data in the literature on the functional outcomes of patients with LSTV who undergo microdiscectomy.Methods: This study enrolled 308 patients diagnosed with LDH and concurrent LSTV. All patients underwent microdiscectomy. Clinical evaluation was performed preoperatively and at distinct follow-up intervals of 1, 3, 6, and 12 months, and 2 and 5 years postoperatively. Assessment included clinical examination and implementation of the well-established, patient-reported outcome measures Visual Analog Scale (VAS) and Short-Form 36 (SF-36) Medical Health Survey Questionnaire for Health-Related Quality of Life (HRQoL) analysis. Furthermore, the anatomical relationship between LSTV and LDH was also studied.Results: The SF-36 indices and VAS score were statistically significantly ameliorated within the follow-up period. Maximum improvement was noted at 3 months, with further minimal improvement after 6 months, and stabilization of indices until the end of followup. Castellvi type IB was the most frequent LSTV type. The adjacent level (L4–L5) just above the LSTV was the most affected with an incidence of 72.1%. In the subgroups of Castellvi type IA, IIA, and IIIA, the LDH side was ipsilateral with the LSTV in 38.3% of patients. In this study, all patients underwent microdiscectomy and demonstrated favorable clinical outcomes (functional recovery and pain relief) and notable amelioration of HRQoL.Conclusions: To the best of our knowledge, this is the first study to conduct a holistic assessment in an attempt to delineate the impact of LSTV presence on the postoperative HRQoL of these individuals.

8 August 2024 in European Journal of Translational Myology
Verified
Journal Article
Open access
PDF file
SKStylianos Kapetanakis
Stylianos Kapetanakis
CCConstantinos Chaniotakis
Constantinos Chaniotakis
PZPeriklis Zavridis
Periklis Zavridis
PKPeriklis Kopsidas
Periklis Kopsidas
SASotirios Apostolakis
Sotirios Apostolakis
Nikolaos GkantsinikoudisNikolaos Gkantsinikoudis
Nikolaos Gkantsinikoudis
Aim of this study is to investigate the safety, efficacy and impact on Health-Related Quality of Life (HRQoL) of Vertebroplasty (VP) and Kyphoplasty (KP) in the management of Osteoporotic Vertebral Compression Fractures (OVCFs) in elderly individuals. VP and KP represent Minimally Invasive Vertebral Augmentation (MIVA) procedures that are increasingly implemented for surgical treatment of OVCFs in recent years. These interventions have been associated with minimal traumatization and intraoperative hemorrhage, considerable analgesic effect and rapid postoperative recovery. Seventy-seven (77) consecutive individuals with OVCFs were subjected to VP/KP and recruited in this prospectively designed non-randomized study. Clinical evaluation was performed preoperatively and postoperatively at particular chronic intervals at 1, 6 weeks and at 3, 6, 12 months and 2 years. Assessment was conducted via the standardized Visual Analogue Scale (VAS) and Short-Form 36 (SF-36) Medical Health Survey Questionnaire for pain and HRQoL, respectively. No perioperative complications were observed. All studied indices were demonstrated to present a statistically significant amelioration following overall analysis. Pain intensity measured by the VAS score was depicted to be significantly reduced during the first 3 months, but continuous improvement of all indices of SF-36 and VAS was demonstrated to reach a plateau at 6 months, featuring no further clinical improvement.VP and KP represent safe and efficient options for interventional treatment of OVCFs in elderly and oldest-old patients, improving self-reported symptoms of pain as well as overall HRQoL.

18 December 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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SKStylianos Kapetanakis
Stylianos Kapetanakis
Mikail ChatzivasiliadisMikail Chatzivasiliadis
Mikail Chatzivasiliadis
Nikolaos GkantsinikoudisNikolaos Gkantsinikoudis
Nikolaos Gkantsinikoudis
KPKonstantinos Pazarlis
Konstantinos Pazarlis
Full-endoscopic lumbar discectomy (FELD) has emerged over time as a minimally invasive alternative to conventional microdiscectomy. This narrative review summarizes the available evidence regarding the evolution, indications, techniques, and outcomes of FELD, with a particular focus on how different types of lumbar disc herniations influence the choice of surgical approach. The literature indicates that the transforaminal approach is most suitable for foraminal and upper lumbar disc herniations, whereas the interlaminar approach is preferred for central or migrated L5–S1 herniations due to the larger interlaminar window at this level. Unilateral biportal endoscopy (UBE) provides better flexibility, visualization, and instrument maneuverability, making it particularly useful in certain cases. Reported complication rates remain low overall but vary according to surgical technique and surgeon experience. The learning curve for FELD typically ranges from approximately 20 to over 50 cases, depending on the approach and individual proficiency. Overall, full-endoscopic techniques are redefining the management of lumbar disc herniations by offering less invasive alternatives with favourable clinical outcomes, and their role is expected to expand further as both technology and surgical expertise continue to evolve.

4 July 2025 in Surgical and Radiologic Anatomy
Verified
Journal Article
Closed access
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SKStylianos Kapetanakis
Stylianos Kapetanakis
Mikail ChatzivasiliadisMikail Chatzivasiliadis
Mikail Chatzivasiliadis
Nikolaos GkantsinikoudisNikolaos Gkantsinikoudis
Nikolaos Gkantsinikoudis