Doctors for Osteoporosis in the Northern suburbs of Athens

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.

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.

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.

Stasinopoulou Kelly (Kalliopi) is a Rheumatologist with a private practice in Chalandri since March 2023. She studied at the Medical School of the National and Kapodistrian University of Athens and specialized in Sweden. Specifically, she was a trainee at the Rheumatology Clinic of NU-Sjukvården, Uddevalla Hospital, and Sahlgrenska University Hospital, where she recently served as a Consultant. She also possesses significant clinical experience.

Pappa Nelli is a specialist Endocrinologist - Diabetologist and maintains a private practice in Agia Paraskevi. She has extensive clinical experience in Greece and Germany and is an external collaborator at Metropolitan General Hospital in Cholargos and at the "PEA" Maternity Hospital. She graduated from the Medical School of the University of Patras. She specialized in Endocrinology, Diabetology, and Metabolism at the academic hospital of the University of Duisburg-Essen, EvK Herne in Germany, as well as in the Endocrinology department and the gestational diabetes department of the General Hospital "Alexandra." Finally, she is a member of the Hellenic Endocrinological Society and the Athens Medical Association.

Anoua Nikolaos is a specialized Orthopedic Surgeon and Traumatologist with a private practice in Vrilissia. He has extensive clinical and surgical experience with adults as well as a particular focus on Pediatric Orthopedics. He graduated from the Medical School of Democritus University of Thrace and obtained his specialty title in Orthopedic Surgery and Traumatology in 2019. He has served at leading hospitals in the country, such as the General Hospital of Athens "KAT", Metropolitan Hospital, IASO Children’s Hospital, Athens Medical Center, and OSTEON Orthopedic & Spine Clinic, covering a wide range of cases in both children and adults. His expertise also includes additional experience in Pediatric Orthopedics at the General Children’s Hospital of Athens "P. & A. Kyriakou". He is a member of important scientific associations, including the Athens Medical Association, the General Medical Council (UK), the Hellenic Society of Surgery and Orthopedic Traumatology (EEXOT), and the Hellenic Society of Out-of-Hospital Emergency Medicine (EEEE). His goal is to provide personalized and scientifically substantiated care, emphasizing patient safety, functionality, and improvement of quality of life.

Dr. Georgios Tsakotos MD, MSc, PhD Orthopedic Surgeon - Assistant Professor, Medical School, National and Kapodistrian University of Athens Georgios Tsakotos was born in Tripoli, Arcadia. After completing secondary education in Tripoli, he was admitted to the Medical School of the National and Kapodistrian University of Athens. From 2006 to 2012, he trained as an Orthopedic Surgeon at the 4th Orthopedic Clinic of "KAT" Hospital. He has received further training abroad in sports medicine, arthroscopic and reconstructive orthopedic surgery. He has participated, presenting papers and lectures, in numerous medical scientific conferences in Greece and abroad. He has authored and published over 100 research scientific articles in peer-reviewed international medical journals. He holds a distinction as Doctor of Philosophy (PhD) from the Medical School of Athens, a Master's degree (MSc) in metabolic bone diseases – osteoporosis from the Medical School of Athens, is a member of the Hellenic Osteoporosis Foundation (EL.I.OS.), the Hellenic Society of Orthopedic Surgery and Traumatology (E.E.CH.O.T.), the Hellenic Arthroscopy Society, the Hellenic Society of Anatomy and Surgical Anatomy, is a Full Member of the European Hip Society, a Member of the European Society of Sports Traumatology, Knee Surgery & Arthroscopy (ESSKA), Member of European Knee Associates (EKA), and an Associate Member of ISAKOS (International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine). He serves as Assistant Director and Orthopedic Surgeon at the "METROPOLITAN" Hospital, in the Sports Injuries and Reconstructive Orthopedic Surgery department. He is Assistant Professor at the Medical School of the National and Kapodistrian University of Athens.

Markopoulos Xristos is an Orthopedic Surgeon and a PhD candidate at the Medical School of the University of Athens, with a private practice in Marousi. Concurrently, he serves as a Consultant in the Upper Limb and Microsurgery Department at YGEIA Hospital and has been a member of the medical team for the Panathinaikos BC basketball team. He graduated from the Medical School of the University of Eastern Piedmont in Northern Italy and subsequently specialized in Orthopedic Surgery at the 1st University Orthopedic Clinic of the University of Athens at "Attiko" Hospital. During his specialization, he focused particularly on the Pediatrics and Microsurgery departments at KAT Hospital. Additionally, he holds a postgraduate degree in Metabolic Bone Diseases - Osteoporosis from the National and Kapodistrian University of Athens. He is also a member of the Hellenic Osteoporosis Society and the Hellenic Pain Society. Finally, he has contributed to scientific papers and textbooks that have been presented at conferences and published in journals.

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.

Tsoumas Xristos is an Orthopedic Surgeon who operates a private practice in Nea Ionia. He is a graduate of the Military School of Corps Officers (S.S.A.S) and holds a Master's degree in "Metabolic Bone Diseases" from the National and Kapodistrian University of Athens. He serves as a Consultant Physician in the 1st Orthopedic Clinic of the 251 General Hospital of Athens and as an External Collaborator at the Errikos Dynan Hospital Center. The doctor has an extensive record of presentations at Greek and international scientific conferences. In his private practice, he manages a wide range of cases, leveraging his scientific expertise while always prioritizing the best possible care for each patient’s needs.

Lallos Stergios MD, MSc is an Orthopedic Surgeon maintaining a private practice in Agia Paraskevi and also sees patients at the Metropolitan General. He holds a master's degree (MSc) in Metabolic Bone Diseases - Osteoporosis and a Medical Degree from the Medical School of the National and Kapodistrian University of Athens. He completed his specialty in Orthopedics and holds ATLS (Advanced Trauma Life Support) certification as well as a Basic Life Support diploma. Additionally, he is specialized in arthroplasty, arthroscopy, traumatology, sports injuries, and major joint surgery, areas he focused on after completing his specialty and subsequently upon selection by the Medical School of Athens, where he served as a University Fellow of the 2nd Orthopedic Clinic of the University of Athens. He then moved to Switzerland, where he worked as a Consultant in the Orthopedic Clinic of Salem Spital in Bern, covering the full spectrum of joint pathology and surgery. It is noteworthy that during his career, he served as a Scientific Associate at the "Errikos Dynan" Hospital Center and the Medical Diavalkaniko Center. Finally, Dr. Lallos is a member of numerous professional associations and has extensive participation in conferences, seminars, presentations, and publications.

Topkas Athanasios MD, MSc is an Orthopedic Surgeon - Sports Medicine Specialist, affiliated with the Orthopedic Clinic of "Hygeia" Hospital, and maintains a private practice in Marousi. He graduated with honors from the Medical School of Varna University and holds a Master's degree in Metabolic Bone Diseases from the National and Kapodistrian University of Athens. He began his specialization in Orthopedic Surgery - Traumatology at the General Prefectural Hospital of Edessa and continued his training at the 1st IKA Hospital of Athens and the General Attica Hospital KAT. He worked as a Registrar B at the Sports Injuries Department of the General Attica Hospital KAT and subsequently as a Registrar B in the 2nd Hand Surgery and Microsurgery Department of the same hospital. During his specialization and tenure, he specialized in all surgeries related to the upper limb and the hand. Additionally, he specialized in Sports Medicine, with a particular emphasis on knee arthroscopy and anterior cruciate ligament reconstruction (ligament injuries of the knee). To date, Dr. Topkas remains a Scientific Collaborator of numerous private hospitals and groups such as Hygeia Hospital, the Biomed Group, the Athens and Piraeus Bioclinic, the Euromedica Group, the Errikos Dynan Hospital Center, the Mediterraneo Hospital, the Athenian Clinic, and the Athens Medical Group. Throughout his medical career, he has actively participated in the development of numerous studies, which have been presented at Greek and international conferences, and has contributed to the authorship of publications. He has participated in numerous postgraduate training programs and workshops and has served on organizing committees for various conferences. Finally, he is a member of the Athens Medical Association, the Hellenic Society of Reconstructive Microsurgery, the Hellenic Society for Hand Surgery, and the Hellenic Society for Wound and Ulcer Healing.

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.

In the Orthopedic Department of Bioclab, which is staffed by highly qualified scientific personnel. The aim of Bioclab is to provide the best possible solutions to patients from diagnosis through to the completion of treatment.

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.

Tzaves Ioannis is a Specialist Endocrinologist with a private practice in Nea Ionia. He trained in Endocrinology at the Piraeus Oncology Hospital "Metaxa," where he served in the Hospital’s Endocrinology Clinic, which is the largest endocrinology clinic in Greece and remains the most important center for thyroid ultrasound training. The doctor played a leading role in this center, having specialized in fine-needle aspiration (FNA) techniques for thyroid and lymph node nodules. He also participated in clinical studies conducted by the Clinic, which were subsequently published in both domestic and international journals. As part of his Endocrinology specialization, he trained in Endocrinology and Gestational Diabetes at "Elena Venizelou" Hospital, as well as in Andrology within the same department. Additionally, he received training in Pediatric Endocrinology at the "P. & A. Kyriakou" Children's Hospital and finally at "Sotiria" Hospital for the management of patients with pathological endocrine diseases. He possesses extensive experience in diagnosing and managing thyroid disorders, as well as in the care of patients with endocrine diseases. Lastly, he has participated in numerous conferences in Greece and abroad and is a member of the Hellenic Endocrinological Society and The Endocrine Society of the USA.

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."

Avramidis Grigorios P. is an Orthopedic Surgeon – Sports Medicine Specialist and Deputy Director of the 3rd Orthopedic Clinic at HYGEIA. He maintains private practices in Chalkida and Marousi, Attica, and also conducts examinations and performs surgical procedures in Cyprus. He was born and raised in Chalkida and originates from Nafplio. He is a graduate of the Medical School of the University of Patras and holds a Master's Degree in "Osteoporosis and Metabolic Bone Diseases" from the Medical School of the University of Athens. He specializes in Arthroscopy, Robotic Arthroplasty, Hand Surgery, as well as Sports Injuries. He is officially certified in Robotic Hip and Knee Arthroplasty. He has received multiple scholarships and actively participates in scientific conferences in Greece and abroad, as well as in the authorship of scientific papers.