Dr. George Stranjalis, Dr. Stylianos Gatzonis, Dr. Theodosis Kalamatianos


The Department of Neurosurgery, University of Athens Medical School is a leading department in epidemiological research on neurological disease such as stroke, epilepsy and traumatic brain injury. Our population-based studies on the incidence, prevalence, outcome and risk factors on the aforementioned disease entities have taken place in collaboration with local medical service providers across the country. Our research contributes significantly to the relatively limited national epidemiological data on various neurological diseases and can help guide future monitoring, prevention and therapeutic strategies.


Additional studies in our Department are based on the analysis of our electronic patient databases. The research aims in identifying the frequency of occurrence and outcome of neurological disease with the overarching goal of improving patient management and neurosurgical treatment.


Stranjalis G, Kalamatianos T, Gatzonis S, Loufardaki M, Tzavara C, Sakas DE. The incidence of the first-ever stroke in a Mediterranean island population: the isle of Lesvos stroke study. Neuroepidemiology. 2014;43:206-12.

Stranjalis G, Kalamatianos T, Stavrinou LC, Mathios D, Koutsarnakis C, Tzavara C, Loufardaki M, Protopappa D, Argyrakos T, Rontogianni DP, Sakas DE. The Evangelismos hospital central nervous system tumor registry: Analysis of 1414 cases (1998-2009). Surg Neurol Int. 2013;4:23.

Stranjalis G, Kalamatianos T, Stavrinou LC, Tsamandouraki K, Alamanos Y. Neck pain in a sample of Greek urban population (fifteen to sixty-five years): analysis according to personal and socioeconomic characteristics. Spine (Phila Pa 1976). 2011. 15;36:E1098-104

Stranjalis G, Tsamandouraki K, Gazonis S, Martzoukos A, Mavroforou E, Metallinos A, Ovales C, Papoulias E, Spigos C, Voulgaris A, Sakas D, Alamanos Y. Low occurrence of epileptic seizures and epilepsy in a defined area of Northwest Greece. Seizure. 2009 Apr;18:206-10.

Stranjalis G, Bouras T, Korfias S, Andrianakis I, Pitaridis M, Tsamandouraki K, Alamanos Y, Sakas DE, Marmarou A. J Outcome in 1,000 head injury hospital admissions: the Athens head trauma registry. Trauma. 2008;65:789-93.