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 Koukos Xristos is an Orthopedic Surgeon who maintains a private practice in Thessaloniki. He is a former Director of specialized sports injuries at St. Josef Hospital in Wuppertal, Germany. He completed his specialization and sub-specialization entirely in Germany. He undertook advanced training at world-renowned sports injury centers specializing in shoulder and elbow injuries, including: ATOS Klinik München (Prof. Martetschläger, Prof. Tauber), Klinikum Rechts der Isar (Prof. Imhoff), OCC Tübingen (Prof. Kasten), ARCUS Klinik Pforzheim (PD Dr. Burkhart), and AZ Monica Antwerp (Prof. Van Riet). In 2017, he served as Consultant at Sportklinik Duisburg, and in 2018, he was appointed Head of the arthroscopy department at the Evangelical Hospital of Mettmann (EVK Mettmann). In 2022, he assumed the position of Director at St. Josef Hospital in Wuppertal, overseeing 1,700 surgeries annually exclusively related to sports injuries of the knee, shoulder, and elbow. He is a certified trainer of the German Arthroscopic Society (AGA). Additionally, he is a member of the committees of the International Society of Orthopaedic Surgery and Traumatology (SICOT) and the International Society of Arthroscopy, Knee Surgery, and Orthopaedic Sports Medicine (ISAKOS), as well as a member of the European Society of Sports Traumatology, Knee Surgery & Arthroscopy (ESSKA - ESA) committee for shoulder and elbow. He holds international recognition in the field of shoulder and elbow, frequently presenting at international conferences and seminars, and he is one of only 3-4 surgeons worldwide performing arthroscopic reconstruction of the lateral ulnar collateral ligament. His expertise also includes multiligamentous knee injuries, beyond just the cruciate ligaments, as well as knee osteotomies aimed at avoiding arthroplasty in younger patients.

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.

Kolympianakis Emmanouil is an Orthopedic Surgeon with a private practice in Ano Patisia. He specializes in sports injuries, knee and shoulder arthroscopy, microsurgery, as well as reconstructive surgery of major joints (knee and hip arthroplasty). He has extensive professional experience and provides specialized services at his private clinic, addressing a wide range of conditions such as cervical arthritis, low back pain – sciatica, tendinitis, calcific tendinopathy, sports injuries, osteoporosis, and pediatric orthopedics. Committed to continuous professional development, he actively participates in both Greek and international conferences and seminars through presentations and reports. He is a member of the Athens Medical Association, the Hellenic Orthopedic and Traumatology Society, and the Hellenic Osteoporosis Foundation.

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.

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.

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.

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.

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.

Giantsidis N Georgios MD, MSc is a Military Physician, Orthopedic Surgeon and consultant at the 1st Orthopedic Department of the 424 General Military Training Hospital. He maintains a private practice in Thessaloniki, in the Voulgari area. He graduated from the Medical School of the Aristotle University of Thessaloniki (Military Medicine) in 2012 and subsequently served as a physician in Special Forces Military Units. He completed his specialty training at the 424 General Military Hospital and the General Hospital of Thessaloniki "Georgios Papanikolaou." During his residency, he performed numerous orthopedic surgeries, participated in many fracture repair and orthopedic disorder surgeries, trained in urgent and routine cases of his specialty, and actively contributed to the scientific work of his clinic. Since then, he has been serving as an orthopedic consultant at the 1st Orthopedic Department of the 424 General Military Training Hospital, performing a large number of surgical procedures annually across the full spectrum of Orthopedic specialty. He actively participates in postgraduate seminars and conferences to continuously update and enhance his knowledge of the latest advances and developments in Orthopedic Surgery and Traumatology.

Ntisios Ilias is an Orthopedic Surgeon - Sports Medicine Specialist, maintaining private practices in Kalyvia Attica and Psychiko (Medical Psychiko). During his postgraduate training, he worked at the Instituto Clinico Humanitas in Milan, Italy, alongside the world-renowned shoulder surgeon, Alex Castagna. He specializes in arthroscopic surgery and the treatment of sports injuries, with a particular focus and interest in the surgical management of shoulder and knee disorders. For nine years, he served as an Attending Physician - Associate in the sports medicine department at the Athens Medical Center and concurrently was responsible for the medical departments of basketball (A1 league) and football (first division) teams until 2011. Additionally, he is a member of the Hellenic Society of Arthroscopic Knee Surgery and Sports Injuries and has served as the society’s secretary for two years, as well as being responsible for organizing and scientific programming of the 4th arthroscopic society congress with international participation in 2011. Finally, for two years, he was an elected member of the board of directors of the Arthroscopic Surgery Society of Greece.

Maria Xoumanidi is an Orthopedic Surgeon with a private practice in Elliniko. She holds a degree from the Medical School of the National and Kapodistrian University of Athens. She has completed a postgraduate program in "Metabolic Bone Diseases" at the Medical School of the National and Kapodistrian University of Athens, as well as a postgraduate program in "Applied Biomechanics and Biomaterials in Orthopedics" at the Medical School of the same institution. She specialized in Orthopedic Surgery initially at the General Panarcadian Hospital of Tripoli and subsequently at the General Hospital "Asklipieio" of Voula. In 2019, she worked as an Orthopedic Surgeon at the Municipal Clinic of Kypseli and currently serves as an Attending Orthopedic Surgeon at Metropolitan Hospital. Additionally, Dr. Xoumanidi has participated in numerous conferences and seminars and is a member of the Piraeus Medical Association and the Hellenic Society of Orthopedic Surgery and Traumatology.

Mpenakis Leonardos is an Orthopedic Surgeon, Director of the Orthopedic Clinic at Metropolitan Hospital, and maintains a private practice in Vrilissia. He graduated from the Medical School of Democritus University of Thrace, where he was admitted through national university entrance examinations. He received a Scholarship from the Hellenic Society of Orthopedic Surgery and Traumatology (E.E.CH.O.T.) for the first Forte Summer School in 2016. Additionally, he was awarded a scholarship from the Hellenic Arthroscopy Society (E.A.E.) for the Travelling Fellowship in 2017. He has participated in numerous international conferences, specialized seminars on new techniques, and educational courses. He has also served as Director of the Orthopedic Clinic at Euroclinic Athens and was among the first Orthopedic Surgeons in Greece trained in total hip arthroplasty using the minimally invasive SuperPath approach during its introduction in 2016. He undertakes arthroscopic repair of sports injuries in cases unresponsive to conservative treatment. The clinic offers the possibility of biological therapies with platelet-rich plasma.

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 Γεωργίου Λοΐζος είναι Ορθοπαιδικός Χειρουργός – Τραυματολόγος με ιατρείο στις Αχαρνές.. Είναι εξωτερικός συνεργάτης κλινικών, όπως Γενική Κλινική ΙΑΣΩ, Ευρωκλινική, Ερρίκος Ντυνάν, Κεντρική Κλινική Αθηνών, Αθηναϊκή Mediclinic και Doctors’ Hospital. Ολοκλήρωσε τις σπουδές του αποφοιτώντας με Άριστα (9.84/10) από την Ιατρική Σχολή του Πανεπιστημίου ΄΄CAROL DAVILA΄΄, Βουκουρέστι. Ο ιατρός εκπαιδεύτηκε σε μεγάλα νοσοκομεία, όπως ΚΑΤ, Νοσοκομείο Παίδων "Αγία Σοφία", Γενικό Νοσοκομείο Λευκωσίας, Νοσοκομείο ΄΄Παμμακάριστος΄΄, Νοσοκομείο Σύρου, Νοσοκομείο Σαντορίνης αποκτώντας μεγάλη εμπειρία σε ορθοπαιδικές χειρουργικές επεμβάσεις όλου του φάσματος της ειδικότητας, καθώς και σε συντηρητικές μεθόδους αποθεραπείας. Παράλληλα, η επιστημονική του κατάρτιση εμπλουτίστηκε με την συμμετοχή του στα Τμήματα Νευροχειρουργικής - Σπονδυλικής Στήλης, Πλαστικής Χειρουργικής και Μικροχειρουργικής - Παθήσεων Άνω Άκρου. Έχει εργαστεί ως επιμελητής στο Ιατρικό Κέντρο Αθηνών (Κλινική Αμαρουσίου), ΙΑΣΩ Γενική Κλινική, καθώς και στην Ορθοπαιδική Κλινική του Γενικού Κρατικού ΝίκαιαςΠειραιά. Είναι κάτοχος τίτλων, όπως του ATLS (ADVANCED TRAUMA LIFE SUPPORT), BLS (BASIC LIFE SUPPORT) και της U/S Hip Graaf Method. Ενώ, παράλληλα, είναι μέλος της Ευρωπαϊκής Αθλητιατρικής Εταιρείας, της Ευρωπαϊκής Αρθροσκοπικής Εταιρείας, της AO TRAUMA Foundation, του Ελληνικού Ιδρύματος Οστεοπόρωσης, του Ιατρικού Συλλόγου Αθηνών και του Παγκύπριου Ιατρικού Συλλόγου. Επίσης, συμβάλλει στην σύσταση ιατρικού ερευνητικού υλικού σε ιατρικά περιοδικά, όπως το Cureus. Επιπλέον, έχει διατελέσει ιατρός αθλητικών σωματείων, όπως της Ομόνοιας Λευκωσίας, της ΑΕΚ Λάρνακας, του Ευρωπαϊκού Πανεπιστημίου Λευκωσίας σε τμήματα ποδοσφαίρου, μπάσκετ, βόλεϊ, καθώς επίσης, έχει συνεργαστεί ως βοηθός ιατρικού επιτελείου στην DINAMO FC Βουκουρεστίου με τον Dr. Liviu Batineanu. Ακόμα, ήταν υπεύθυνος ιατρός σε Ακαδημίες Ποδοσφαίρου Αχαρνών Ταύρου. Συμμετέχει σε συνέδρια, σεμινάρια και ημερίδες της ειδικότητάς του και όχι μόνο. Ενημερώνεται διαρκώς για τα τελευταία νέα με στόχο τη συνεχόμενη εκπαίδευση, καθώς και τις καλύτερες δυνατές υπηρεσίες προς τους ασθενείς. Προτεραιότητά του είναι ο σεβασμός στον ασθενή και η αποτελεσματική αντιμετώπιση των ορθοπαιδικών παθήσεων άμεσα και υπεύθυνα. Τέλος, διαθέτει μεγάλη εμπειρία σε αρθροσκοπήσεις, αρθροπλαστικές και στην τραυματολογία αρθρώσεων ώμου, γόνατος, ισχίου και ποδοκνημικής. Ταυτόχρονα, στο ιατρείο του παρακολουθούνται και περιστατικά που αντιμετωπίζονται συντηρητικά.

Tzavellas Anastasios is an Orthopedic Surgeon who maintains a private practice in the center of Thessaloniki. He collaborates with private clinics in the city to perform surgical procedures and is currently working as a Consultant in the First Orthopedic Clinic of the 424 General Military Hospital.

In 2008, he was commissioned as a Second Lieutenant (Physician), having concurrently graduated from the Medical School of Aristotle University of Thessaloniki, where he enrolled in 2002.

In 2012, he began his specialty training at the 424 General Military Training Hospital, which he completed in 2018 at the Third University Orthopedic Clinic of Aristotle University of Thessaloniki at the General Hospital "Papageorgiou," receiving the title of Orthopedic Surgeon.

He completed the Master's program in "Medical Research Methodology" at Aristotle University of Thessaloniki (2014 – Grade: Excellent) and obtained his PhD from the Medical School of Aristotle University of Thessaloniki in 2024, presenting his dissertation on the osteoinductive capacity of a novel peptide derived from Bone Morphogenetic Protein-2 combined with a de novo collagen sponge as a bone graft substitute.

During the period 2021-2024, he worked in the United Kingdom, specifically at Frimley Park Hospital, as a Clinical Fellow in the Hip-Knee Surgery Department, gaining significant experience by performing and participating in a substantial number of surgical procedures (hip and knee arthroplasty, revisions, unicompartmental (partial) knee arthroplasty, arthroscopic surgery, osteotomies).

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.