Orthopaedic - Orthopaedic Surgeons

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.

Mpoutsiadis Axilleas is an Orthopedic Surgeon - Military Physician and Doctor of Medicine from the Aristotle University of Thessaloniki, with a private practice located within the Athens Bioclinic. He is a graduate of the Military School of Corps Officers (SSAS) and the Medical School of Aristotle University of Thessaloniki. He specialized at the 424 General Military Hospital of Thessaloniki and the First University Orthopedic Clinic of Papageorgiou General Hospital. He received further training in shoulder and knee surgery (Shoulder and Knee fellowship) and in conducting clinical trials. He possesses extensive clinical experience, having worked in Greece and France. Moreover, he has a significant scientific portfolio reflected in 32 scientific publications in reputable international scientific journals (PubMed) with a substantial impact factor, some of which introduce innovative new techniques concerning arthroscopic shoulder surgery (instability and rotator cuff) and knee surgery (anterior and posterior cruciate ligament reconstruction). He is also the author of five orthopedic book chapters focusing on basic research and shoulder surgery (rotator cuff and shoulder arthroplasties), principal editor of a scientific orthopedic book addressing surgical techniques for the treatment of rotator cuff disorders and shoulder arthroplasties titled “EFOST Surgical Techniques in Sports Medicine - Shoulder Surgery, Volume 2: Rotator Cuff and Shoulder Arthroplasty,” and principal guest editor of a scientific journal issue on shoulder pathology titled “Thematic issue in Shoulder Pathology.” Additionally, he has presented over 100 communications at international and national conferences (winning two awards), participated in the organization of numerous workshops and conferences, and has been invited as a speaker and educator at scientific conferences on shoulder surgery and sports injuries.

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.

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.

Soukakos Mixail is an Orthopedic Surgeon and maintains a private practice in Haidari. He is an Associate Orthopedic Surgeon with the Athens Medical Group, at the Peristeri Medical Center. The doctor specializes in conditions and treatments such as knee and shoulder arthroscopy, minimally invasive surgery, total knee and hip arthroplasty, robotic-assisted arthroplasty, hand and foot surgery, management of sports injuries, osteoporosis, and biological therapies with stem cells.

Georgios Sxinas MD, MSc, PhD is an Orthopedic Surgeon with a private practice in Pefki. He holds a doctorate from the National and Kapodistrian University of Athens, specializing in Surgical Orthopedics, and completed advanced training in total joint arthroplasties at the Hospital for Special Surgery (HSS) in New York, supported by a scholarship from the Stavros Niarchos Foundation. As a scholar, he also trained in the sports injuries department of the KAT General Hospital, where he gained extensive surgical experience in sports injuries in both diagnosis and treatment. He serves as a Consultant at Ygeia Hospital and is a former Consultant at the Second Orthopedic Clinic of the General Hospital of Athens "G. Gennimatas," where he acquired significant experience in Emergency Orthopedics, actively participating in the clinic's on-call program. Previously, he worked as a physician in the Orthopedic Clinic at James Paget University Hospital in the United Kingdom. To date, he has authored presentations and publications in renowned scientific and medical journals and has been awarded for the best paper entitled: "Experience and Observations from Bone Lengthening with Unilateral External Fixation Devices."

Mr. Siopis Xristos is an Orthopedic Surgeon with private practices in Thessaloniki (28 Agias Sofias, 2nd Floor) and Veria (32 El. Venizelou, 3rd Floor). He is a graduate of the Medical School of the University of Thessaly. Since 2021, he has been a Collaborating Surgeon at the A’ Orthopedic Clinic of the Interbalkan Medical Center of Thessaloniki and a direct collaborator of Dr. Stylianos Kapetanakis in the Spine & Deformities Department. Simultaneously, he serves as a Collaborating Physician at the Athens Medical Center in Marousi and Psychiko. He specializes in knee and hip arthroplasties with customized implants, spinal surgery, knee and shoulder arthroscopies, as well as pediatric orthopedics. In his private practices, he provides a wide range of services tailored to the individual needs of each patient, always with respect to the patient himself.

Sakellariou Vasileios MD, MSc, PhD is an Orthopedic Surgeon and maintains a private practice, Athens Orthopedic Experts, in Nea Smyrni and Marousi. He holds a Doctorate from the Medical School of the University of Athens and a postdoctoral fellowship from the Biomechanics and Motion Analysis Laboratory at the Mayo Clinic in Minnesota, USA. He also holds a Medical Degree and a postgraduate degree in "Metabolic Bone Diseases" from the National and Kapodistrian University of Athens. He has specialized in minimally invasive hip and knee surgeries, as well as robot-assisted hip and knee arthroplasty in the USA. He possesses extensive professional experience in the treatment of sports injuries, adult reconstructive surgery, and major joint surgery from Orthopedic Clinics in both the United States and Greece. In addition to his private practice, he is the Director of the Robotic Orthopedic Fast-Track Rehabilitation Clinic and the Musculoskeletal Oncology Clinic at the Athens Medical Center, while holding the academic position of University Fellow at the 1st Orthopedic Clinic of the University of Athens with a specialization in Hip and Knee Surgery.

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.

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.

Lagoudakis Georgios MD, MSc is an Orthopedic Surgeon with a private practice in Chania. He holds a Master's Degree (MSc) specializing in "Metabolic Bone Diseases - Osteoporosis" from the National and Kapodistrian University of Athens and a medical degree from the Medical School of Ioannina. Additionally, after completing his specialization at the largest orthopedic hospital in Athens, the General Attica Hospital KAT, he received a scholarship from the Hellenic Society of Orthopedic Surgery and Traumatology and began his postgraduate training in England alongside world-renowned orthopedic surgeons, focusing on the most advanced arthroscopic surgical techniques. He also received a scholarship from the Stavros Niarchos Foundation for further training at the top orthopedic hospital in America, the HSS-Hospital for Special Surgery, in Manhattan, New York. He is specialized in performing arthroplasties using minimally invasive methods. He has extensive experience in sports injuries, particularly knee injuries such as meniscal and cruciate ligament tears, as well as all shoulder disorders. Furthermore, he handles hand and upper extremity surgery cases and microsurgery, following his extensive training in the microsurgery department of the General Attica Hospital KAT.

Dr. Mpesiris Georgios is an Orthopedic Surgeon who maintains private practices in Ano Liosia, Kypseli, Corfu, and Ierapetra. He studied at the Medical School of the National and Kapodistrian University of Athens and specialized in Orthopedic Surgery at the General Hospital of Elefsina "Thriasio" and the General Children’s Hospital "Panagiotis and Aglaia Kyriakou." He holds a PhD from the Medical School of the National and Kapodistrian University of Athens with a thesis titled "Comparative study of the local use of tranexamic acid in total knee arthroplasty (intra-articular – periarticular injection)." He has extensive experience working in clinics and hospitals, as well as participation in numerous conferences related to the field of Orthopedic Surgery. Additionally, from 2020 to 2022, he received medical recognition awards and consistently stays up-to-date with all scientific advancements in his specialty, treating medical science as a vocation. Finally, he provides high-quality orthopedic services and comprehensive therapeutic interventions for every orthopedic issue.

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.

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.

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.

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.

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.

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.

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.