Orthopaedic - Orthopaedic Surgeons

Dempegiotis Petros MD, MSc is an Orthopedic Surgeon with a private practice in Kypseli. He is a graduate of the Medical School of the National and Kapodistrian University of Athens and has attended numerous international educational seminars. He is also a certified physician in Neural Therapy. He is an affiliated physician at Euroclinic Athens, Doctor's Hospital, and Metropolitan General. With extensive experience in orthopedic disorders, he diagnoses and treats orthopedic conditions in both adults and children. Additionally, he manages cases such as tendinitis, osteoarthritis, cervical syndrome, sciatica, as well as pediatric orthopedics.

Ο Μάζης Γεώργιος είναι Διευθυντής Ορθοπαιδικός Χειρουργός, υπεύθυνος του τμήματος Χειρουργικής Άνω Άκρου (Ωμού & Αγκώνα) στην Ευρωκλινική Αθηνών. Επίσης, εργάζεται στο Ιατρικό Π. Φαλήρου ως υπεύθυνος του τμήματος Χειρουργικής Άνω Άκρου (Ωμού & Αγκώνα) και Άκρας Χειρός ενώ παράλληλα είναι συνεργάτης του Τμήματος Χειρουργικής Άνω Άκρου και Άκρας Χειρός στην Ορθοπαιδική Κλινική «OSTEON» στο Ιατρικό Αθηνών.

Ο κ. Μάζης κατέχει την θέση του Διευθυντή Ορθοπαιδικού Χειρουργού (Consultant Orthopaedic Surgeon) από τον Ιανουάριο 2017 στο Πανεπιστημιακό Νοσοκομείο Queen's NHS Barking, Havering and Redbridge, του Λονδίνου. Διδάκτωρ της Ιατρικής σχολής του Πανεπιστημίου Αθηνών (ΕΚΠΑ) από τον Ιανουάριο του 2014 (PhD degree) με βαθμό «Άριστα». Έγινε, κατόπιν εξετάσεων, “Fellow of European Board of Orthopaedics and Traumatology” τον Οκτώβριο 2014. Από τον Οκτώβριο του 2016 είναι εξεταστής (examiner) στο Queens Hospital Clinical FRCS (Orth) Course. Τον Ιανουάριο του 2011 έλαβε το μεταπτυχιακό τίτλο σπουδών (Master of Science, MSc) με θέμα «Μεταβολικά Νοσήματα των Οστών» μετά από διετή παρακολούθηση και παρουσίαση διατριβής με βαθμό «Άριστα». Είναι απόφοιτος της Ιατρικής Σχολής Αθηνών (2003 – Εθνικό Καποδιστριακό Πανεπιστήμιο Αθηνών) Από το 2012 αφοσιώθηκε στο ιδιαίτερο γνωστικό του αντικείμενο, τη Χειρουργική Άνω Άκρου και Άκρας Χειρός, καθώς και στις αρχές της ιατρικής επιστήμης και ηθικής, έχοντας στοχευμένη μετεκπαίδευση σε κορυφαία κέντρα του Ηνωμένου Βασιλείου. Διετέλεσε έμμισθος κλινικός υπότροφος (Senior Post CCT Clinical Fellow, 2015) στον τομέα της Χειρουργικής Άνω Άκρου (Upper Limb Surgery ) στο Royal Berkshire Hospital NHS, Reading, Berkshire, UK, υπό την καθοδήγηση του Professor Ofer (εμπνευστής και σχεδιαστής της ανάστροφης ολικής αρθροπλαστικής ώμου VERSO) που μαζί με τον Steve Copeland (εμπνευστής και σχεδιαστής της αρθροπλαστικής ώμου επιφανείας Copeland) αποτέλεσαν πρωτοπόρους στην Χειρουργική του Άνω Άκρου σε παγκόσμιο επίπεδο . Στη συνέχεια, διετέλεσε έμμισθος κλινικός υπότροφος (Senior Post CCT Clinical Fellow, 2016) στο Royal National Orthopaedic Hospital, Stanmore, στον τομέα της Χειρουργικής Άνω Άκρου και σύμπλοκων Αρθροπλαστικών Ώμου και Αγκώνα (Upper Limb and Complex Shoulder and Elbow Arthroplasty Surgery), υπό την καθοδήγηση των Simon Lambert και Ian Bayley (εμπνευστής και σχεδιαστής της ολικής αρθροπλαστικής ώμου Bayley Walker).

Είναι μέλος του British Elbow and Shoulder Society από το 2015. Επιπλέον, είναι μέλος πολλών ελληνικών και ξένων επιστημονικών επιτροπών και οργανώσεων και παραμένει ακαδημαϊκά ενεργός, ως Διδάκτορας του Πανεπιστημίου Αθηνών, έχοντας στο ενεργητικό του πολλαπλές δημοσιεύσεις άρθρων και πρωτοποριακών χειρουργικών τεχνικών σε επιστημονικά περιοδικά και επιθεωρήσεις του εξωτερικού καθώς και συμμετοχή στην συγγραφή αλλά και μετάφραση σύγχρονων συγγραμμάτων Ορθοπαιδικής.

Pathiakis Ioannis Md, MSc, PhD is an Orthopedic Surgeon who maintains a private practice in Peristeri. He holds a medical degree from the Medical School of the National and Kapodistrian University of Athens and has obtained two postgraduate degrees in "Minimally Invasive Surgery, Robotic Surgery & Tele-surgery Medicine" and "Surgical Anatomy" from the Medical School of the same university. Additionally, he holds a Doctorate from the National and Kapodistrian University of Athens in the Department of Anatomy. He is specialized in Robotic Knee and Hip Surgery and in Microsurgical Bloodless Carpal Tunnel Release and holds a diploma in Medical Acupuncture from the Scientific Association of Medical Acupuncturists of Greece. He has completed training at numerous hospitals, while his specialty was completed in General Surgery at the General Hospital of Ierapetra. Furthermore, during his career, he has taught courses on First Aid, Traumatology, and musculoskeletal injuries at the IEK of Siteia and at the Volunteer Corps of Samaritans and Rescuers of Siteia, respectively. Finally, as part of his continuous education and updating in microsurgery and medical acupuncture, the physician regularly attends medical conferences, earning personal honorary distinctions.

Beyond Medicine, he holds a degree in Social Theology from the Theological School of Athens.

Tasios Nikolaos is an Orthopedic Surgeon with a private practice in Glyfada. He holds a medical degree from Aristotle University of Thessaloniki and specialized in Orthopedics at the Orthopedic Clinic - Hand Surgery Department at Asklipieio Voula. He completed a fellowship as an Orthopedic Surgeon at the Orthopedic Clinic - Knee Disorders and Sports Injuries Department at Erasme University Hospital in Brussels. His practice covers the full spectrum of orthopedic and orthopedic surgical cases, with a specialization in trauma, sports injuries, and hip and knee arthroplasty.

Orthopedic Surgeon Dr. Alkiviadis Kallivokas, BSc, MD, PhD, specializes in modern arthroscopic and arthroplasty surgery of the hip, knee, and shoulder, utilizing minimally invasive techniques (AMIS and MIS) and robot-assisted surgery, with the aim of rapid recovery, reduction of postoperative pain, and immediate return of patients to their daily activities. He holds degrees in Medicine and Biology from the University of Athens and a PhD in Orthopedics from the University of Patras, with significant scientific activity and publications in international scientific journals. He has been trained and worked at leading hospitals in Greece and the United Kingdom and has served as Director of Orthopedics and Traumatology at Homerton University Hospital in London. He possesses extensive experience in the management of diseases and injuries of major joints, including arthroscopies of the hip, knee, and shoulder, arthroplasty procedures, sports injuries, and orthopedic trauma. He collaborates with the Athens Medical Center (Neo Psychiko) and the Evgenidio Hospital, providing personalized therapeutic solutions focused on the needs of each patient. His medical approach is based on accurate diagnosis, comprehensive patient education, and the establishment of a trust-based relationship with the patient.

Athanasopoulos Konstantinos MD, MSc is an Orthopedic Surgeon maintaining private practices in Piraeus and Galata Troizinia, while also collaborating with the Athens Medical Group (Peristeri clinic) and the sports injury center at Mediterraneo Hospital. He is certified in robotic knee and hip arthroplasty using the most advanced robotic system worldwide, the only one with FDA certification in the USA for robotic total joint revision arthroplasty. He holds a postgraduate degree in “Metabolic Bone Diseases” from the Medical School of Athens and graduated in Medicine from the University of Medicine and Pharmacy "Carol Davila". He specialized in Orthopedics and Traumatology at the General Hospital of Piraeus “Tzaneio” and in Pediatric Orthopedics at the Children’s Hospital "P. & A. Kyriakou", and after successful examinations where he ranked first in Attica, he obtained the title of orthopedic specialty. He served as an instructor at the Special Training Center for Health Professionals in the Orthopedics and Traumatology department of the General Hospital of Piraeus "Tzaneio" regarding the implementation of a preventive screening program for scoliosis and other spinal deformities in students. Additionally, he has participated as a speaker and trainee in numerous conferences and seminars in Greece. His areas of expertise include arthroscopic surgery, robotic knee and hip arthroplasty, as well as robotic knee and hip revision surgery with Fast-Track ERAS protocols for rapid return to activities, and minimally invasive surgery.

Vamvatsikos Konstantinos is an Orthopedic Surgeon with private clinics in Agios Stefanos and Oropos. After completing his studies, he specialized in Orthopedics at the 5th Orthopedic Clinic of the General Hospital of Attica KAT, in the Spine and Scoliosis Unit. Subsequently, he received further training at Sheffield Hospital in England, focusing on specialized conditions primarily affecting the spine. In his private clinics, he manages all orthopedic conditions, with particular expertise over the past 10 years in the DRX 9000 technology, a digital decompression bed that successfully treats complex spinal disorders such as sciatica, herniated intervertebral discs, and discopathies with high success rates. More than 8,000 cases of complex spinal disorders have been treated using DRX 9000 technology, which is an FDA-certified American innovation also utilized by NASA. Additionally, he operates podology departments offering reflexology sessions, pedobarography, and the fabrication of custom digital technology insoles, as well as departments for acupuncture, ozone therapy, and osteoporosis. Bone density measurements for osteoporosis diagnosis and treatment of arthritis conditions in the knee, shoulder, or hip are also conducted, utilizing collagen infiltration, hyaluronic acid, autologous activated platelet-rich plasma, and stem cell therapies.

Xatzixristou Marios MD, PhD is an Orthopedic Surgeon with a private practice in Nea Makri. He has specialized in orthopedics, plastic surgery, and neurosurgery at the General Hospital of Elefsina "Thriasio," in the A’ Orthopedic Department of the General Children's Hospital of Athens "Panagiotis & Aglaia Kyriakou," as well as in the sports injuries clinic at the Athens Medical Center under the supervision of Pantelis Nikolaou. His clinic is equipped with modern devices for soft tissue ultrasound and bone density measurement, facilitating the physician's diagnostic approach. He has participated in numerous scientific conferences and seminars and has presented at international scientific meetings with publications in peer-reviewed foreign journals. Finally, he is a member of the Athens Medical Association, the Hellenic Society of Orthopedic Surgery & Traumatology, and the Hellenic Society for the Study of Bone Metabolism.

Tsimplakis Mixalis is an Orthopedic Surgeon - Sports Medicine Specialist, Deputy Director of the 8th Orthopedic Clinic at Metropolitan General, and maintains a private practice in Nea Smyrni. He is a graduate of the Medical School of the National and Kapodistrian University of Athens and has received advanced training in Shoulder Arthroscopic Surgery at the 401 General Military Hospital of Athens. He has particular expertise in knee arthroplasty, meniscal arthroscopy, chondropathy arthroscopy, shoulder arthroscopy, osteoporosis management, as well as monitoring kyphosis, scoliosis, and fractures. Additionally, he collaborates with the Medical Center of Palaio Faliro, BioClinic of Piraeus, and Doctors Hospital. Finally, the physician has contributed to scientific publications both in Greece and internationally.

Dr. Trellopoulos Aggelos is an Orthopedic Surgeon who maintains two private clinics in Zografou and Marousi. He holds a Medical Degree and a postgraduate degree in Metabolic Bone Diseases from the National and Kapodistrian University of Athens. He specializes in Arthroscopic Surgery, Arthroplasty & Robotic Arthroplasty, Hand Surgery - Microsurgery, and Sports Injuries. He is a Consultant at the Third Orthopedic Clinic of "Hygeia" Hospital and at the Athens Center for Arthroscopy and Shoulder Surgery. He is a member of the European Society of Sports Traumatology (ESSKA), from which he has received educational fellowships aimed at specializing in athlete injuries. Finally, he is an active member of Greek and international scientific associations, has published numerous scientific articles and papers in Greek and international journals, and has delivered lectures at Greek and international sports medicine conferences.

Ο Λεωνίδου Ανδρέας PGDip, MSc, PhD, FACS, FRCS (Tr&Orth) είναι Ορθοπαιδικός Xειρουργός - Τραυματολόγος και Διδάκτωρ στο Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης με ιδιωτικό ιατρείο στο Μαρούσι. Παράλληλα, διατελεί Διευθυντής στο Ιατρικό Κέντρο Αθηνών στο Μαρούσι. Είναι απόφοιτος της Ιατρικής Σχολής του Εθνικού & Καποδιστριακού Πανεπιστημίου Αθηνών και έχει ολοκληρώσει μεταπτυχιακές σπουδές στην Ορθοπαιδική Μηχανική στο Πανεπιστήμιο του Cardiff. Μετά την αποφοίτησή του ξεκίνησε να εργάζεται στο Ηνωμένο Βασίλειο, όπου κάτω από διαρκή αξιολόγηση, τακτικές εξετάσεις και συνεντεύξεις, ολοκλήρωσε την ειδικότητα της Ορθοπαιδικής και Τραυματολογίας. Είναι εξειδικευμένος Χειρουργός άνω άκρου, γόνατος και αθλητικών κακώσεων και έχει ολοκληρώσει όλη την ειδικότητα και την υπερεξειδίκευση στο ειδικό γνωστικό αντικείμενό του στην Αγγλία. Μετά το πέρας της ειδικότητας, εξειδικεύτηκε στην παγκοσμίου φήμης Κλινική Ώμου - Αγκώνα στο Reading. Εργάσθηκε δε ως Διευθυντής στην ίδια κλινική και εν συνεχεία στο Πανεπιστημιακό Νοσοκομείο του East Kent. Εργάσθηκε συνεχόμενα στο Ηνωμένο Βασίλειο από το 2005 έως το 2019 αποκτώντας τεράστια χειρουργική εμπειρία. Διαθέτει αναλυτικό - πιστοποιημένο logbook πλέον των 6000 χειρουργείων. Επιστρέφει στην Ελλάδα μετά από 14 χρόνια παραμονής στο Ηνωμένο Βασίλειο, έχοντας αφυπηρετήσει στην υψηλότερη βαθμίδα του μόνιμου Διευθυντή (substantive Consultant), με στόχο να παρέχει στους ασθενείς του τις πιο σύγχρονες τεχνικές διάγνωσης και θεραπείας με βάση τα διεθνή πρότυπα. Ασχολείται με όλο το φάσμα της τραυματολογίας με εξειδίκευση στην αντιμετώπιση των σύνθετων καταγμάτων του ώμου - αγκώνα. Επίσης, εξειδικεύεται στην αρθροσκόπηση ώμου - αγκώνα και γόνατος με μεγάλη χειρουργική εμπειρία και όγκο περιστατικών. Εφαρμόζει το ελάχιστης επεμβατικότητας σύστημα ανάστροφης αρθροπλαστικής ώμου χωρίς stem. Είναι εταίρος (fellow) του Βασιλικού Κολλεγίου των Χειρουργών του Εδιμβούργου, έχοντας ολοκληρώσει με επιτυχία τις σχετικές εξετάσεις. Επιπλέον, είναι εκπαιδευτής στο Advanced Trauma Life Support Course και στο παγκοσμίου φήμης Reading Shoulder and Elbow Course. Ταξιδεύει συχνά στην Ευρώπη όπου διδάσκει την τεχνική της ανάστροφης αρθροπλαστικής ώμου χωρίς stem. Την περίοδο 2017 - 2019 ήταν ο πρώτος Έλληνας που εκλέχτηκε μέλος της Εκπαιδευτικής Επιτροπής της Βρετανικής Εταιρίας Ώμου - Αγκώνα. Tέλος, τo 2020 εκλέχτηκε στην επιτροπή μελών της Ευρωπαϊκής Εταιρίας Ώμου - Αγκώνα.

Kaldis Panagiotis is an Orthopedic Surgeon specializing in Upper Limb Surgery and Reconstructive Microsurgery. He graduated from the Medical School of the National and Kapodistrian University of Athens. Alongside his private practice in Pallini, he works as Deputy Director in the B' Department of Hand Surgery and Microsurgery at Hygeia Hospital, where he manages complex hand and shoulder injuries. He is a member of prominent medical associations, including the Athens Medical Association, the Hellenic Society of Surgery, Orthopedics, and Traumatology (HECOS), the Hellenic Society of Hand and Upper Limb Surgery (HEHUS), the Society of Reconstructive Microsurgery (SRM), and the International Wrist Arthroscopy Society (IWAS).

In his private practice, he treats conditions across the full spectrum of orthopedics and provides specialized services tailored to the individual needs of his patients.

Stathellis Apostolos MD, PhD is an Orthopedic Surgeon - Sports Medicine Specialist with expertise in arthroscopic surgery of the shoulder, knee, elbow, and ankle, as well as sports injuries. He graduated with honors from the Medical School of the National and Kapodistrian University of Athens and holds a PhD from the University of Ulm in Germany. Following an 8-year training period in Germany (2009 - 2016) at one of the leading arthroscopic surgery centers (Sportklinik - Stuttgart), he now maintains private practices in Vrilissia and Marousi and concurrently serves as an Attending Physician at the 3rd Orthopedic Clinic at Hygeia Hospital. In 2016, he obtained the sports medicine specialization title in Germany, as well as certification in arthroscopic surgery. Additionally, he is trained and certified in musculoskeletal ultrasonography.

Dr. Sarantis Mixalis, MD, MSc, PhDc, is an Orthopedic Surgeon with a private practice in Psychiko. Concurrently, he serves as an Orthopedic Consultant specializing in Sports Injuries at Metropolitan Hospital. He has extensive experience, having completed his specialization at the General Children's Hospital "Agia Sofia" and the 4th Orthopedic Clinic of G.N.A. KAT, while also specializing at the same hospital in the Hand-Upper Limb-Microsurgery Clinic, the Sports Injuries Department, and the Pediatric Orthopedic Clinic. In 2018, he successfully completed advanced training in pediatric orthopedic trauma and pediatric skeletal deformities at the Orthopedic Hospital Speising (Vienna, Austria). Since 2019, he holds a Master's degree in "Metabolic Bone Diseases - Osteoporosis" from the Medical School of the National and Kapodistrian University of Athens. In 2020, he was appointed as a doctoral candidate by the Medical School of Athens, and since then he has been pursuing his doctoral thesis at the 2nd Orthopedic University Clinic of the University of Athens (Konstantopouleio Hospital – Agia Olga). He is an active member of the European Paediatric Orthopaedic Society (EPOS), the European Society for Sports Traumatology Knee Surgery and Arthroscopy (ESSKA), the Hellenic Society of Orthopaedic Surgery and Traumatology (EEHOT), and the Athens Medical Association. Finally, he has a rich academic portfolio, authoring numerous publications in peer-reviewed international journals (PUBMED) and actively participating in presentations at Greek and international conferences.

Papaioannou Xristoforos is an Orthopedic Surgeon and Doctor of Medicine from the Medical School of the University of Freiburg, Germany, with a private practice in Agia Varvara. After completing his studies at the Medical School of the National and Kapodistrian University of Athens, he specialized in Orthopedics and Traumatology and sub-specialized in Upper Limb, Hand Surgery, and Microsurgery at major centers in Germany. He is a certified Hand Surgeon (Handchirurg) following examinations at the University of Münster, Germany. He currently maintains a position as an Orthopedic Surgeon in the Department of Orthopedics, Traumatology & Hand Surgery at the Kreisklinikum Siegen clinic, an academic center of the University of Marburg. Furthermore, he specialized in the Department of Orthopedics, Traumatology & Hand Surgery at Darmstadt Hospital (Kreisklinikum Darmstadt). Additionally, he worked at the certified orthopedic center and arthroplasty center, as well as in the spinal surgery department of the orthopedic clinic in Lorsch, Germany, where he specialized in minimally invasive knee and hip arthroplasty surgery and in targeted fluoroscopy-guided injection therapy with slow-release corticosteroids for the management of chronic pain in spinal disorders. Finally, he served for several years as a scientific collaborator at the University of Freiburg and has numerous publications in scientific journals and conferences.

Aleksiou Spyros is an Orthopedic Surgeon with a private practice in Ampelokipoi. He graduated from the Medical School of Debrecen University and specialized in Orthopedic Surgery at the General Hospital of Ioannina "Hatzikosta". He has extensive experience in both the public and private sectors, having served as a consultant at "Hatzikosta" Hospital and since 2018 maintaining a private practice in Ioannina, offering a specialized program of surgical procedures and advanced therapies. His professional activity focuses on hip and knee arthroplasties (primary and revision surgeries), sports injuries, deformities of the forefoot, and minimally invasive endoscopic spinal techniques. Additionally, he applies non-radiological methods for the evaluation of spinal deformities and provides modern biological treatments such as PRP and stem cell injections for tendinopathies and osteoarthritis. He has attended numerous postgraduate seminars and workshops in Greece and abroad (Germany, France, Italy, Belgium, Poland), and is a certified user of robotic and percutaneous techniques, including the OrthoAlign, Spine Tip, and Pecaplasty systems. He has presented scientific papers at conferences in Greece and Europe and maintains a consistent presence in the advancement of the field through continuous education with an emphasis on patient-centered care.

Grigorios Sasalos is an Orthopedic Surgeon, Consultant at the Orthopedic Clinic of Metropolitan Hospital, and maintains a private practice in Galatsi. He graduated from the Medical School of the National and Kapodistrian University of Athens. He received a scholarship from the State Scholarships Foundation to undertake a postgraduate program at the National School of Public Health. He completed his specialization at the First University Clinic of the National and Kapodistrian University of Athens. He has served for several years as an unpaid Scientific Collaborator at the Second University Clinic of the National and Kapodistrian University of Athens. He has participated in numerous international conferences, specialized seminars on new techniques, and educational courses. He manages cases across the entire spectrum of reconstructive surgery, hip and knee arthroplasty, with a particular interest in minimally invasive SuperPATH hip arthroplasty. He also undertakes arthroscopic repair of sports injuries in cases unresponsive to conservative treatment.