Orthopaedic - Orthopaedic Surgeons

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

Pentazos Panagiotis - Nektarios is an Orthopedic Surgeon who maintains a private practice in Kolonaki. He graduated from the Medical School of the University of Timișoara in Romania and specialized in Pediatric Orthopedics at the General Children’s Hospital "Panagiotis & Aglaia Kyriakou" and in Vascular Surgery at the General Hospital of Athens "G. Gennimatas." Additionally, he specialized in Plastic Surgery at the Attica General Hospital KAT, Orthopedics at the General Hospital "Asklipieio" Voula, and General Surgery at the General Hospital of Pyrgos "Andreas Papandreou." Since 2018, Dr. Pentazos has been a Scientific Collaborator at the Osteoporosis Clinic of the General Hospital "Asklipieio" Voula. Finally, he is a member of the Athens Medical Association, the Hellenic Society of Orthopedic Surgery and Traumatology, and the Hellenic Osteoporosis Foundation.

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.

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.

Dr. Sinnis Gerasimos is an Orthopedic Surgeon - Traumatologist who has maintained a private practice in Ampelokipi since October 2014. He holds a medical degree from the University of Bologna in Italy. He specialized in Orthopedic Surgery and Traumatology at the General Hospital of Athens "Evangelismos," followed by training in the Microsurgery and Hand Department of the General Hospital of Attica KAT, and finally at the 2nd Orthopedic Clinic of the Children's General Hospital "P. & A. Kyriakou." For two years (05/2012 - 04/2014), he completed paid postgraduate training in hip and knee reconstructive surgery in Bologna, Italy, at the private clinic Casa di Cura "Villa Erbosa" (San Donato Hospital Group), in the Clinic for Degenerative and Dysplastic Hip Diseases, under the supervision of Professor Roberto Binazzi. From 02/2022 to 10/2023, he served as a physician for the football team of P.A.E. Panathinaikos, while from 09/2015 to 10/2019 he was head of the medical department of the P.A.E. Panathinaikos Academy, gaining significant experience with sports injuries in children and adults. He holds a postgraduate degree titled "Metabolic Bone Diseases" from the National and Kapodistrian University of Athens and is a final-year student in the postgraduate program "Exercise and Health" at the same institution.

Dr. Zaxariou Stergios MD is an Orthopedic Surgeon - Traumatologist, maintaining private practices in Elefsina and Ano Liosia. He is a graduate of the Medical School of the National and Kapodistrian University of Athens and completed his specialization at the Orthopedic Department of the General Hospital of Piraeus "Tzaneio." Dr. Zaxariou specializes in sports injuries and is a member of the Medical Team of the Olympiacos B.C. Additionally, he specializes in the minimally invasive Surgical Treatment Method for Carpal Tunnel Syndrome and stays continuously updated on all developments in Orthopedics through participation in conferences. In his private practice, he offers all necessary examinations and patient services including clinical examination, fracture monitoring, kyphosis and scoliosis management, osteoporosis screening, meniscus, cruciate ligament, and chondropathy arthroscopy, as well as intra-articular injections. Finally, Dr. Zaxariou is a member of the Hellenic Arthroscopy Society and the Hellenic Osteoporosis Foundation.

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.

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.

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.

Maragkou Aggeliki - Aikaterini is an Orthopedic Surgeon for adults and children. She studied with honors scholarships and graduated with "Excellent" from the Medical University of Debrecen, Hungary. She also trained in General Surgery at Charing Cross Hospital in London. She specialized in Orthopedics - Traumatology at the General Hospital of Attica KAT and further specialized in Microsurgery as well as Pediatric Orthopedics, obtaining a "Diploma in Children’s Orthopaedics" from EPOS - EFORT IC in Vienna. She has been trained in Neonatal Hip Ultrasound and in the diagnosis and management of Developmental Dysplasia of the Hip by the distinguished Professor Reinhard Graf. She holds the title of "Rescuer" in Advanced Pediatric Life Support from the European Resuscitation Council (ERC) in Athens. She serves as a physician for the National Youth and Girls Football Teams on international missions and, as a member of the Hellenic Sports Medicine Society, she is appointed as a match physician for Superleague and Greek Cup championship games.

Liosis Konstantinos is an Orthopedic Surgeon with a private practice in Chalandri, a member of the Medical Team of KAE Panathinaikos, and a Consultant at the Orthopedic Clinic of HYGEIA Hospital. He holds a medical degree from the School of Health Sciences at Ovidius University and a postgraduate degree from the Department of Metabolic Bone Diseases at the Medical School of the National and Kapodistrian University of Athens. Additionally, he has specialized in the management of persistent pain and inflammation, holding a Diploma in Neural Therapy, a therapeutic technique utilizing local anesthetics for the management of acute and chronic pain. His private practice offers a range of services, including meniscal arthroscopy, cruciate ligament arthroscopy, osteoporosis screening, and chondropathy arthroscopy. Furthermore, he is a member of the Hellenic Osteoporosis Foundation, the Hellenic Society of Orthopedic Surgery and Traumatology, and the Hellenic Society of Neural Therapy and Homeostasis Study, while actively attending multiple conferences to stay updated with ongoing advancements in the field.

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.

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.

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.

Ο Τζουτζόπουλος Απόστολος είναι Ορθοπαιδικός Χειρουργός και διατηρεί ιδιωτικό ιατρείο στην Κόρινθο. Σπούδασε στην Ιατρική Σχολή Πανεπιστημίου Πατρών και έκανε την ειδικότητά του στο νοσοκομείο ΚΑΤ. Στο πλαίσιο της ειδικότητας αντιμετώπισε πληθώρα τραυμάτων και καταγμάτων στο τμήμα επειγόντων περιστατικών και ακολούθησε περαιτέρω επιμέρους εξειδίκευση στην κλινική Μικροχειρουργικής - Χειρουργικής άνω άκρου και στην κλινική σπονδυλικής στήλης. Εργάστηκε στην Παιδορθοπαιδική του νοσοκομείου Παίδων Πεντέλης για ένα χρόνο και παρακολούθησε το ιατρείο οστεοπόρωσης και μεταβολικών νοσημάτων των οστών στο νοσοκομείο "Αττικόν". Μετά την απόκτηση της ειδικότητας της Χειρουργικής Ορθοπαιδικής & Τραυματιολογίας, εργάστηκε ως έμμισθος επιμελητής στο Θεραπευτήριο Metropolitan, υπό τη διεύθυνση του καθηγητού Ορθοπαιδικής κου Σάπκα. Παράλληλα, με το ιδιωτικό του ιατρείο, πραγματοποιεί χειρουργικές επεμβάσεις στη Βιοκλινική Αθηνών, στο Metropolitan και συνεργάζεται σε χειρουργικά περιστατικά στα θεραπευτήρια ΥΓΕΙΑ και ΜΗΤΕΡΑ. Στο χώρο του ιατρείου λειτουργεί σύγχρονος πελματογράφος SCHEIN με δυνατότητα στατικού και δυναμικού πελματογραφήματος Επίσης, λειτουργεί μηχάνημα υπερήχων "ESAOTE" για την καλύτερη μελέτη παθήσεων του μυοσκελετικού και την κατευθυνόμενη έγχυση φαρμάκων σε τένοντες και αρθρώσεις. Πρόσφατα παρέχεται και η δυνατότητα βιολογικής θεραπείας χρόνιων τενοντοπαθειών ώμου, γόνατος, αγκώνος, πέλματος και αχιλλείου καθώς και σοβαρών μυϊκών θλάσεων σε αθλητές με την τεχνική του πλούσιου σε αιμοπετάλια πλάσματος.(GLOP RPP, GLOFFIN). Σε αθλητικές κακώσεις, όπως διαστρέμματα και μυικές θλάσεις, εφαρμόζεται η μέθοδος του ενέσιμου κολλαγόνου (collagen MD-GUNA). Η μέθοδος χρησιμοποιείται και για την αντιμετώπιση τενοντοπαθειών οξέων αλλά και χρόνιων. Σε βλάβες αρθρικού χόνδρου και σε επιλεγμένα περιστατικά αρθροπαθειών γόνατος και ισχίου που δεν απαιτείται χειρουργική επέμβαση εφαρμόζεται στο ιατρείο η μέθοδος της έγχυσης καλλιέργειας αυτόλογων ενεργοποιημένων βλαστοκυττάρων που συλλέγονται από το κοιλιακό λίπος (Cartil-S, Theracell).

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.

Sopilidis Georgios is an Orthopedic Surgeon with a private practice in Nea Filadelfeia. He graduated from the State Medical University of Kazakhstan. He specializes in knee and shoulder arthroscopy, pediatric orthopedics, knee and hip arthroplasty, spinal disorders, fracture surgery, and traumatology. Additionally, the physician collaborates with the Central Clinic of Athens and is a member of the Athens Medical Association.