Dr. Nikolaos Sferopoulos received his Medical degree and PhD from the School of Medicine of the Aristotle University of Thessaloniki and completed his Orthopaedic residency in Thessaloniki, Greece. He has participated as chapter author in a medical book. He has 38 publications. He currently works as Consultant Orthopaedic Surgeon in the 2nd Department of Orthopaedic Surgery, Aristotle University of Thessaloniki, “G. Gennimatas” Hospital, 54635, Thessaloniki, Greece.