Orthopaedic - Orthopaedic Surgeons

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.

Dr. Petridis Grigorios is an Orthopedic Surgeon with a private practice in Marousi. He completed his studies at the University of Bologna in Italy and received his orthopedic training at the 401 General Military Hospital of Athens. He serves as a scientific collaborator at the private clinics Metropolitan General, Leukos Stavros Athens Clinic, and REA. He has previously held the position of consultant at the 3rd Orthopedic Clinic of the Errikos Dynan Hospital Center. He specializes in arthroplasty of major joints (knee and hip) using advanced minimally invasive surgical techniques (MIS) and Robot-Assisted Total Knee Replacement (utilizing robotic assistance systems in knee arthroplasty), arthroscopic knee surgeries, and foot surgery. He has performed a large number of procedures in these fields and possesses significant clinical experience. He manages cases across the full spectrum of orthopedics and traumatology. His curriculum vitae includes notable participation in scientific publications, orthopedic conferences, and numerous specialized educational seminars and workshops both in Greece and internationally.

Mandals Konstantinos is an Orthopedic Surgeon with a private practice in Kaisariani. He graduated from the Medical School of the National and Kapodistrian University of Athens and completed his specialty training in the Orthopedic Clinic of the General Hospital of Athens "G. Gennimatas," at the General Children's Hospital "P. & A. Kyriakou," and at the Special Anti-Cancer Hospital of Piraeus "Metaxa." During his specialty training, he participated in 1120 surgeries, either as the primary or assistant surgeon, dealing with fractures and dislocations as well as chronic orthopedic cases, such as knee and hip arthroplasties, knee and shoulder arthroscopies, spinal fusions, and discectomies. To date, he has numerous publications in Greek and international conferences, actively participating as a speaker, maintaining excellent training, deep knowledge, and continuous professional development in his field. Finally, he is a member of the Athens Medical Association, the AO Foundation, the Hellenic Society of Orthopedic Surgery and Traumatology, and the Hellenic Osteoporosis Foundation.

Andreopoulos Asimakis is an Orthopedic Surgeon - Sports Medicine Specialist who has maintained his medical practice since 2008 in Ilion, Attica. He has been a Consultant at the 1st Orthopedic Clinic of Metropolitan General since 2008 and a collaborator at the Athens Medical Center in the Peristeri Clinic. He specializes in hip and knee arthroplasties, shoulder and knee arthroscopies, and traumatology. Throughout his career, he has worked in numerous hospitals and clinics, such as the General Hospital of Attica KAT and the General Hospital of Athens "Evangelismos," treating conditions including sports injuries, sciatica, fractures, low back pain, osteoarthritis, osteosynthesis, scoliosis, and spinal stenosis. Finally, he is a member of the Athens Medical Association, the Hellenic Society of Orthopedic Surgery & Traumatology, and the Hellenic Osteoporosis Foundation.

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.

Papadakis Mixalis is an Orthopedic Surgeon with a private practice in Koukaki. He graduated from the Medical School of Pilsen, Charles University of Prague, and specialized in Orthopedics at the 2nd Orthopedic Clinic of the National and Kapodistrian University of Athens. He completed his doctoral thesis at the Medical School of the University of Crete and is certified in musculoskeletal ultrasound by the European League Against Rheumatism. He serves as a physician for the Gymnastic Club Apollon Smyrnis and the Sporting Athletic Club and has worked as an academic visitor in the Spine Department at the Hospital for Special Surgery in New York. Furthermore, he has participated in 51 international and Greek conferences, seminars, and workshops, delivering 48 oral presentations and 11 posters, and has published 13 foreign language and 4 Greek articles in reputable scientific journals.

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.

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.

Ailamakis Nikolaos is an Orthopedic Surgeon who maintains a private practice in Chalandri and holds a position as a consultant at the 2nd Orthopedic Clinic of Errikos Dynan Hospital Center. He holds a medical degree from the Medical School of the University of Crete and is specialized in Arthroplasty, fracture management, upper and lower limb surgery, Sports Injuries, Shoulder – Hip – Knee pathologies, and Pediatric Orthopedics. He covers the entire spectrum of Orthopedics and Traumatology using the most modern treatment methods, either surgical and/or conservative depending on indications. Additionally, he offers a range of services, including osteoporosis screening, fracture management and follow-up, treatment of spinal and limb disorders, wound suturing and repair, and cast application. Moreover, thanks to his extensive experience, he provides high-level services in total hip and knee arthroplasty using minimally invasive techniques — resulting in shorter hospitalization time, minimal and controlled postoperative pain, and rapid recovery. Finally, he offers medical treatment and rehabilitation of musculoskeletal conditions using specialized biological agents without contraindications or side effects, such as hyaluronic acid and injections of concentrated platelets – growth factors.

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.

Anastasopoulos Panagiotis is an Orthopedic Surgeon, maintaining a private practice in Chalandri. He has extensive experience in issues concerning injuries, arthroscopies, arthroplasties, and the musculoskeletal system in general.

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.

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.

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.

Dimitrios Xrysovitsianos is an Orthopedic Surgeon who maintains a private practice in Ilion. He holds a degree from the Medical School of the National and Kapodistrian University of Athens and specialized in Orthopedics - Orthopedic Surgery at the Attikon General Hospital of Athens KAT. He is specialized in microsurgery, upper limb and hand surgery, sports injuries, pediatric and adult trauma, osteoporosis, arthritis treatment, hip and knee arthroplasties, and foot disorders. He serves as the Chief of the Orthopedic Clinic of the Upper Limb Surgery - Traumatology Department at Euroclinic Athens, as well as Consultant at the First Pediatric Orthopedic Clinic of the Marousi Medical Center. Additionally, he is a member of the SOS Doctors. Previously, he has served as Consultant in Upper Limb Surgery at Metropolitan Hospital. He has significant professional experience in private hospitals in Athens, having worked in these institutions since 2001. Finally, the doctor has participated in numerous lectures and orthopedic conferences and has authored many medical papers, aiming for continuous engagement with advancements in his field.

Ο Χρηστογεώργος Πάρις, MD, MSc είναι Ορθοπαιδικός Χειρουργός και Τραυματολόγος με εξειδίκευση στις παθήσεις και τη Χειρουργική της Σπονδυλικής Στήλης. Ο ιατρός είναι απόφοιτος της Ιατρικής Σχολής του Πανεπιστημίου Κρήτης και κάτοχος Μεταπτυχιακού Διπλώματος (Master of Science, MSc) στην «Άθληση και Υγεία» με βαθμό Άριστα από την Ιατρική Σχολή Αθηνών του Εθνικού και Καποδιστριακού Πανεπιστημίου Αθηνών. Εκπλήρωσε την ειδίκευσή του στη Γενική Χειρουργική στο 251 Γενικό Νοσοκομείο Αεροπορίας (2014-2015). Ξεκίνησε και ολοκλήρωσε την ειδίκευσή του στην Ορθοπαιδική Χειρουργική και Τραυματολογία στο Γενικό Νοσοκομείο Αθηνών «Γ. Γεννηματάς» (2016-2021), όπου απέκτησε ιδιαίτερη εμπειρία στη διάγνωση και χειρουργική αντιμετώπιση σύνθετων καταγμάτων, κακώσεων, χρόνιων εκφυλιστικών παθήσεων και παραμορφώσεων του άνω και του κάτω άκρου . Στο πλαίσιο της ειδικότητας, εκπαιδεύτηκε στο Τμήμα Σκολίωσης και Σπονδυλικής Στήλης του Γ.Ν.Α. «ΚΑΤ» (2019-2020), όπου απέκτησε εμπειρία στην ολοκληρωμένη αντιμετώπιση όλου του φάσματος των παθήσεων, σύνθετων παραμορφώσεων και κακώσεων της Σπονδυλικής Στήλης. Ακόμα, εκπαιδεύτηκε στην Παιδο-ορθοπαιδική στο Νοσοκομείο Παίδων «η Αγία Σοφία» (2020-2021), όπου ήρθε σε επαφή με μεγάλο όγκο κακώσεων και παραμορφώσεων του παιδιατρικού πληθυσμού. Ο ιατρός εκπαιδεύτηκε ως Fellow στο Centre for Spinal Studies and Surgery του Queen’s Medical Centre, Nottingham University Hospitals στο Nottingham του Ηνωμένου Βασιλείου (2023), το οποίο αποτελεί διεθνώς αναγνωρισμένο Κέντρο Αριστείας κι Αναφοράς για τις παθήσεις, παραμορφώσεις και κακώσεις της Σπονδυλικής Στήλης στο Ηνωμένο Βασίλειο, καθώς και Κέντρο Εκπαίδευσης της AO Spine. Σήμερα, ο ιατρός εργάζεται ως Επιμελητής Ορθοπαιδικός- Χειρουργός Σπονδυλικής Στήλης στην Κλινική Σπονδυλικής Στήλης, Κέντρο Σκολίωσης, Τραύματος και Ογκολογίας Σπονδυλικής Στήλης του Νοσοκομείου Metropolitan General στην Αθήνα. Είναι διδάσκων του σεμιναρίου «Πρώτες βοήθειες- ορθοπαιδικά επείγοντα» για προπτυχιακούς και μεταπτυχιακούς φοιτητές της Ιατρικής Σχολής Αθηνών, ΕΚΠΑ από το 2019 έως σήμερα και ομιλεί άπταιστα Αγγλικά και Γερμανικά. Συμμετέχει ενεργά σε εγχώρια και διεθνή συνέδρια καθώς και επιμορφωτικά σεμινάρια και παράγει ερευνητικό έργο. Τέλος, είναι μέλος της Ελληνικής Εταιρίας Χειρουργικής Ορθοπαιδικής και Τραυματολογίας (Ε.Ε.Χ.Ο.Τ.) καθώς και του Ιατρικού Συλλόγου της Μεγάλης Βρετανίας (G.M.C.).

Dr. Natsioulas Nikolaos is an Orthopedic Surgeon who maintains a private practice in Agia Paraskevi and concurrently serves as a Consultant in the Orthopedic Clinic of the Naval Hospital of Athens. He was admitted through nationwide examinations to the Medical Department of the Military Academy of Corps Officers and to the Medical School of Aristotle University of Thessaloniki. He graduated in 2006 with the grade "very good" and was commissioned as an Ensign in the Hellenic Navy. He initially served as a physician on the Hellenic Navy's frigate Elli, and in 2009 began his specialization in Orthopedic Surgery at the Naval Hospital of Athens. In 2011, he moved to Glasgow, United Kingdom, where he completed a 4-year residency in Orthopedic Surgery and Traumatology. In 2015, after examinations, he became a member of the Royal College of Surgeons of Great Britain (Fellow of the Royal College of Surgeons), and in 2017, after examinations, a member of the European Board of Orthopaedics and Traumatology (FEBOT), making him one of the few Orthopedic surgeons in Greece holding both titles. The doctor has acquired significant experience in the conservative and surgical management of Orthopedic and Traumatology conditions. He operates privately at Metropolitan General in Cholargos and at other private clinics in Athens.

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.

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.