Orthopaedic - Orthopaedic Surgeons

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.

Dr Penteridis Ioannis is an Orthopedic Surgeon and Pediatric Orthopedist, maintaining a private practice in Oraiokastro. He holds a PhD in Medicine from the "Victor Babes" Medical University. He possesses extensive training and experience, having worked in numerous clinics across the country. Alongside his private practice, he serves as an Orthopedic Surgeon in the infrastructure departments of the PAOK team, at the Medical Diavalkaniko of Thessaloniki, and other private clinics with which he collaborates.

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.

Spyridon Kseinis is an Orthopedic Surgeon maintaining private clinics in Pefki and Psychiko. He is the Deputy Director of the 1st Clinic of Sports Injuries at METROPOLITAN GENERAL and holds a Doctorate from the Medical School of the National and Kapodistrian University of Athens since May 2014, awarded with the grade "Excellent." Since 2008, he has collaborated with the Hellenic Football Federation (EPO) and serves as the physician for the National Futsal Team. Concurrently, he is UEFA-accredited, having completed the "UEFA Football Doctor Education Programme." He is a member of the Hellenic Society of Orthopedic Surgery and Traumatology and the Hellenic Society for the Study of Bone Metabolism. He trained at the General Accident Hospital KAT, specializing in fracture management, reconstructive joint surgery (knee and hip arthroplasty), and sports injuries. Following his specialization, he assumed the position of Registrar at the 2nd Orthopedic Clinic of KAT Hospital, where he remained for four years. During his tenure as Registrar, he gained substantial surgical experience, serving as the lead Orthopedic Surgeon in numerous emergency shifts and successfully performing a large number of surgical interventions across the full spectrum of trauma (upper and lower limb fractures, hip fractures, tendon ruptures, hand surgery), reconstructive surgery (hip and knee arthroplasties), and sports injuries (arthroscopic surgery). Additionally, he received training in Pediatric Orthopedics at the "Agia Sophia" Children's Hospital and in disorders of the Hand during his tenure at the University Hospital "Sahlgrenska University Hospital" in Gothenburg, Sweden.

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. 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.

Athanasakis Theodoros is an Orthopedic Surgeon who began his specialization in Orthopedics at Venizeleio Provincial Hospital and completed it at the University Hospital of Heraklion, Crete. During his specialty training, he moved to Athens to train in foot and ankle pathology under Mr. Athanasios Badekas, a military orthopedic surgeon and Police Brigadier (former team doctor for the Olympiacos basketball team). Concurrently, he served as a resident physician in the Second Orthopedic Clinic at the Agia Sofia Children's Hospital under the Director Mr. Ioannis Anastasopoulos. At the Children's Hospital, he completed numerous on-call shifts and performed many surgeries. He maintains a private practice in Heraklion, Crete, where he offers services across the full spectrum of his specialty. He possesses excellent scientific expertise and significant experience in the diagnosis and management—both conservative and surgical—of orthopedic conditions.

Konstantinos Xorianopoulos is an Orthopedic Surgeon - Sports Medicine Specialist - Traumatologist and maintains a private practice in the Agioi Anargyroi area. He specializes in sports injuries and traumatology and has attended specialized seminars at dedicated arthroscopy centers in the city of Tours, France. The physician is a Scientific Collaborator at the Peristeri Medical Center and the Psychiko Medical Center. In his private practice, he offers a multitude of services, tailored to the individual needs of each patient.

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.

Orthopedic Surgeon Mpekas Georgios maintains private clinics in Pangrati, Agioi Anargyroi, and Palaio Faliro. He graduated from the Medical School of the National and Kapodistrian University of Athens and subsequently attended a postgraduate program in Metabolic Bone Diseases. He specialized in General Surgery at the General Hospital of Messolonghi "Chatzikosta" and in Orthopedics at the General Hospital "Asklipieio" Voula and the Children's General Hospital "Panagiotis & Aglaia Kyriakou," where he also engaged in Pediatric Orthopedics. Additionally, he completed a six-month specialization in the Microsurgery - Upper Limb department at the Attica General Hospital KAT. He has worked as an Orthopedic Surgeon Consultant at Metropolitan Hospital. The physician holds an Advanced Life Trauma Support diploma and is a member of the Hellenic Osteoporosis Foundation. Besides his private clinics in Pangrati and Agioi Anargyroi, Mpekas Georgios also works as an Orthopedic Surgeon at the Athens Medical Center (Marousi Clinic) and as an Associate Orthopedic Surgeon at the private clinic REA. Concurrently, he works as a Pediatric Orthopedic Consultant at the Pediatric Center of Athens (Athens Medical Group). The physician approaches each case with particular sensitivity, providing appropriate treatment tailored to the specific needs of each patient and their condition. He undertakes the surgical management of emergency orthopedic cases (fractures). Furthermore, his medical team manages numerous elective orthopedic surgical cases (arthroscopies, total arthroplasties, upper limb microsurgery, sports injuries). Finally, modern biological therapies (PRP, hyaluronic acid and cortisone injections) are performed in the clinic.

Armakolas Nikolaos MD, MSc, PhD is an Orthopedic Surgeon and maintains a private practice in Nea Smyrni. He holds a Doctorate from the Medical School of the National and Kapodistrian University of Athens with a Master’s Degree in "Metabolic Bone Diseases" from the same University. Additionally, he is a Scientific Collaborator at the 3rd Orthopedic Clinic of the General Hospital of Attica KAT, at the "Hygeia" Clinic in Marousi, and at the private clinic "Leto" in Kalamata, while also collaborating with major clinics such as the Iatriko and Mediterraneo Hospital. At his practice, he provides comprehensive information and appropriate treatment tailored to each patient’s needs, following the most modern techniques. Finally, the doctor is a member of the Medical Association of Athens, the Medical Association of the United Kingdom, and the Medical Association of Sweden.

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.

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.

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.

Paulidis Ioannis is an Orthopedic Surgeon who maintains a private practice in Acharnes. He deals with the entire spectrum of orthopedic cases and sports injuries, specializing in Arthroscopic and Open Surgery of the Shoulder and Knee, Microsurgery of the Upper Limb, and Hand Surgery, as well as their revisions. To date, he has performed a very large number of surgeries and stays continuously updated on the latest developments in surgical techniques as well as all scientific publications worldwide in his field. His scientific papers have been published at the Panhellenic Congresses of the Hellenic Society of Arthroscopy, Knee Surgery and Sports Injuries, at the Panhellenic Congresses of Orthopedic Surgery and Traumatology, at Pan-European Shoulder and Elbow Congresses, and at many other medical conferences in which he regularly participates as part of his ongoing education and training.

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.

Mr. Nikolaos Kalos is an Orthopedic Surgeon and Deputy Director of the 4th Orthopedic Clinic at Metropolitan General in Cholargos. He maintains a private practice in Neo Psychiko.

He is a graduate of the Medical School of the University of Ioannina and completed his specialization at the University Orthopedic Clinic of Ioannina.

He specialized at the Osteoarthritis and Knee Deformities Treatment Center, LKH Stolzalpe - Murau in Austria. In his private practice, he provides a wide range of services, tailored to the individual needs of each patient.

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.

Paris Christogeorgos, MD, MSc, is an Orthopaedic Surgeon and Traumatologist specialising in Spinal Disorders and Spine Surgery.

He graduated from the School of Medicine at the University of Crete and holds a Master of Science (MSc) degree in “Exercise and Health”, awarded with Distinction by the Medical School of the National and Kapodistrian University of Athens.

He completed his training in General Surgery at the 251 Hellenic Air Force General Hospital (2014–2015).

He subsequently undertook and completed his residency in Orthopaedic Surgery and Traumatology at the General Hospital of Athens “G. Gennimatas” (2016–2021), where he gained extensive experience in the diagnosis and surgical management of complex fractures, traumatic injuries, chronic degenerative conditions and deformities of both the upper and lower limbs.

As part of his orthopaedic training, he completed a clinical rotation at the Scoliosis and Spine Department of KAT General Hospital (2019–2020), where he gained experience in the comprehensive management of the full spectrum of spinal disorders, complex deformities and spinal injuries. He also received training in Paediatric Orthopaedics at “Agia Sofia” Children's Hospital (2020–2021), gaining extensive experience in the management of injuries and deformities affecting the paediatric population.

In 2023, he undertook a clinical fellowship at the Centre for Spinal Studies and Surgery, Queen’s Medical Centre, Nottingham University Hospitals, in Nottingham, United Kingdom. This is an internationally recognised Centre of Excellence and Referral Centre for spinal disorders, deformities and injuries, as well as an AO Spine Training Centre.

In 2025, he further advanced his training through a short-term fellowship at the Pediatric Spine Surgery Unit, Sant Joan de Déu Children's Hospital, in Barcelona, Spain, where he participated in surgical procedures involving children and adolescents with complex spinal deformities and disorders.

In 2026, he also completed a short-term fellowship at the Spine Neurosurgery Unit, Santa Casa de Porto Alegre, Hospital São José, in Porto Alegre, Brazil. His training focused on surgical techniques and procedures for the correction of complex spinal deformities, degenerative conditions, primary and metastatic spinal tumours, as well as spinal infections in adults.

Currently, he works as a Consultant Orthopaedic Spine Surgeon at the Spine Surgery Department –Centre for Scoliosis, Trauma and Spine Oncology, Eurospine Surgical Spine Centre of Excellence, at Metropolitan General Hospital in Athens, Greece.

Since 2019, he has also been involved in teaching the undergraduate and postgraduate medical students of the Medical School of the National and Kapodistrian University of Athens in the seminar entitled “First Aid – Orthopaedic Emergencies”.

He is fluent in English and German.

He actively participates in national and international medical conferences and educational seminars and is engaged in clinical and academic research.

He is a member of the following professional organisations:

• Hellenic Association of Orthopaedic Surgery and Traumatology (HAOST)
• General Medical Council (GMC), United Kingdom
• AO Spine
• AO Spine Youth Club