Senior Registrar

5th Department of Orthopedics

2nd Floor - Building A'

Call Center: (+30)210-6972000

Email: d.lyras@dunant.gr


  • Private practice in Henry Dunant Hospital (2016-today).
  • Private practice, Athens (2014-2016).
  • Minimal Invasive Hip and Knee plus Revision Total Hip and Knee Arthroplasty Fellowship at Sky Ridge Medical Center, Denver, Colorado, USA (2013-2014).
  • Private practice, Athens (2012-2013).
  • Locum Orthopaedic and Trauma Consultant at General Hospital of Leros (2011-2012).
  • Trauma Fellowship at Poole NHS Hospital, Dorset, UK (2010-2011).


  • Minimal Invasive Hip and Knee plus Revision Total Hip and Knee Arthroplasty Fellowship at Sky Ridge Medical Center, Denver, Colorado, USA (2013-2014).
  • Trauma Fellowship at Poole NHS Hospital, Dorset, UK (2010-2011).
  • Orthopaedic Registrar at Royal Children's Hospital, Manchester, UK (2009-1010).
  • Orthopaedic Registrar at Amalia Fleming General Hospital, K.A.T., N.I.M.T.S. (2006-2009).
  • Orthopaedic Registrar at Karditsa General Hospital (2004-2006).
  • General Surgery Registrar at Aglaia Kyriakou General Hospital (2003-2004).
  • Special House Officer at Limnos General Hospital (2002-2003).
  • Medical Degree, Democritus University of Thrace, Medical School (1996-2002).
  • Degree in Veterinary Medical School, Aristotle University of Thessaloniki (1989-1995).


  • Doctor of Philosophy (PhD), “The use of autologous growth factors on tendon healing. Experimental study in rabbits”. Democritus University of Thrace, Medical School (2005-2010).
  • Master of Science (MSc), “Metabolic diseases of Bone”. National and Kapodistrian University of Athens, Medical School, Department of Osteoporosis (2008-2010).
  • Emergency Prehospital Medicine. Ambulance National Services (2007-2008).

Recognitions & Awards

  • Scholarship from EFORT, European Foundation of Orthopaedics and Traumatology, in Total Hip and Knee Arthroplasty Surgery
  • Best Paper Award for 2010 for the paper “Temporal and spatial expression of TGF-1 in an Achilles Tendon section model after application of platelet-rich plasma”, European Foot and Ankle Society.


  1. Temporal and Spatial Expression of TGF-b1 in the Early Phase of Patellar Tendon Healing after Application of Platelet Rich Plasma. Lyras DN, Kazakos K, Tilkeridis K, Kokka A, Ververidis A, Botaitis S, Agrogiannis G. Arch Bone Jt Surg. 2016 Apr;4(2):156-60.
  2. Analysis of the Geometry of the Distal Femur and Proximal Tibia in the Osteoarthritic Knee: A 3D Reconstruction CT Scan Based Study of 449 Cases. Lyras DN, Loucks C, Greenhow R. Arch Bone Jt Surg. 2016 Apr;4(2):116-21.
  3.  Results of extra-articular subtalar arthrodesis in children with cerebral palsy. Mazis GA, Sakellariou VI, Kanellopoulos AD, Papagelopoulos PJ, Lyras DN, Soucacos PN. Foot Ankle Int. 2012 Jun;33(6):469-74. doi: 10.3113/FAI.2012.0469.
  4. Does a single application of PRP alter the expression of IGF-I in the early phase of tendon healing? Lyras DN, Kazakos K, Georgiadis G, Mazis G, Middleton R, Richards S, O'Connor D, Agrogiannis G. J Foot Ankle Surg. 2011 May-Jun;50(3):276-82. doi: 10.1053/j.jfas.2011.02.010. Epub 2011 Mar 25.
  5. Early mobilization after uncomplicated medial subtalar dislocation provides successful functional results. Lasanianos NG, Lyras DN, Mouzopoulos G, Tsutseos N, Garnavos C. J Orthop Traumatol. 2011 Mar;12(1):37-43. doi: 10.1007/s10195-011-0126-2. Epub 2011 Feb 10.
  6. Effect of combined administration of transforming growth factor-b1 and insulin-like growth factor I on the mechanical properties of a patellar tendon defect model in rabbits. Lyras DN, Kazakos K, Verettas D, Chronopoulos E, Folaranmi S, Agrogiannis G. Acta Orthop Belg. 2010 Jun;76(3):380-6.
  7. Temporal and spatial expression of TGF-beta1 in an Achilles tendon section model after application of platelet-rich plasma. Lyras DN, Kazakos K, Tryfonidis M, Agrogiannis G, Botaitis S, Kokka A, Drosos G, Tilkeridis K, Verettas D. Foot Ankle Surg. 2010 Sep;16(3):137-41. doi: 10.1016/j.fas.2009.09.002. Epub 2009 Nov 12.
  8. Application of PRP gel alone or in combination with guided bone regeneration does not enhance bone healing process: An experimental study in rabbits. Kazakos K, Lyras DN, Thomaidis V, Agrogiannis G, Botaitis S, Drosos G, Kokka A, Verettas D. J Craniomaxillofac Surg. 2011 Jan;39(1):49-53. doi: 10.1016/j.jcms.2010.03.005. Epub 2010 Apr 24.
  9. Experimental study of tendon healing early phase: is IGF-1 expression influenced by platelet rich plasma gel? Lyras DN, Kazakos K, Agrogiannis G, Verettas D, Kokka A, Kiziridis G, Chronopoulos E, Tryfonidis M. Orthop Traumatol Surg Res. 2010 Jun;96(4):381-7. doi: 10.1016/j.otsr.2010.03.010. Epub 2010 May 7.
  10. Fractures of the femoral neck treated with hemiarthroplasty. A comparative study. Stavrakis TA, Lyras DN, Psillakis IG, Kremmydas NV, Hardoyvelis CP, Dermon AR, Papathanasiou JV, Kokka AS, Rafailidou EE, Ilieva EM, Kazakos KI. Folia Med (Plovdiv). 2009 Oct-Dec;51(4):34-9.
  11. A humeral shaft fracture complicated with anterior shoulder dislocation in a young male treated with modified Intramedullary nailing prior to reduction: a case report. Kazakos K, Paraschou S, Lasanianos NG, Verettas D, Lyras DN. Cases J. 2009 Nov 23;2:9075. doi: 10.1186/1757-1626-2-9075.
  12. The influence of platelet-rich plasma on angiogenesis during the early phase of tendon healing. Lyras DN, Kazakos K, Verettas D, Polychronidis A, Tryfonidis M, Botaitis S, Agrogiannis G, Simopoulos C, Kokka A, Patsouris E. Foot Ankle Int. 2009 Nov;30(11):1101-6. doi: 10.3113/FAI.2009.1101.
  13. The effect of platelet-rich plasma gel in the early phase of patellar tendon healing. Lyras DN, Kazakos K, Verettas D, Botaitis S, Agrogiannis G, Kokka A, Pitiakoudis M, Kotzakaris A. Arch Orthop Trauma Surg. 2009 Nov;129(11):1577-82. doi: 10.1007/s00402-009-0935-4. Epub 2009 Jul 21.
  14. The use of autologous PRP gel as an aid in the management of acute trauma wounds. Kazakos K, Lyras DN, Verettas D, Tilkeridis K, Tryfonidis M. Injury. 2009 Aug;40(8):801-5. doi: 10.1016/j.injury.2008.05.002. Epub 2008 Aug 13.
  15. Progression of spondylolysis to isthmic spondylolisthesis in an adult without accompanying disc degeneration: a case report. Lyras DN, Tilkeridis K, Stavrakis T. Acta Orthop Belg. 2008 Feb;74(1):141-4.
  16. Comparative study of 5 different membranes for guided bone regeneration of rabbit mandibular defects beyond critical size. Thomaidis V, Kazakos K, Lyras DN, Dimitrakopoulos I, Lazaridis N, Karakasis D, Botaitis S, Agrogiannis G. Med Sci Monit. 2008 Apr;14(4):BR67-73.
  17. Internal fixation of proximal humerus fractures using the Polarus intramedullary nail. Kazakos K, Lyras DN, Galanis V, Verettas D, Psillakis I, Chatzipappas Ch, Xarchas K. Arch Orthop Trauma Surg. 2007 Sep;127(7):503-8. Epub 2007 Jul 10.
  18. External fixation of intertrochanteric fractures in elderly high-risk patients. Kazakos K, Lyras DN, Verettas D, Galanis V, Psillakis I, Xarchas K. Acta Orthop Belg. 2007 Feb;73(1):44-8.
  19. Effect of an inactivated Parapoxvirus based immunomodulator (Baypamun) on post weaning diarrhoea syndrome and wasting pig syndrome of piglets. Kyriakis SC, Tzika ED, Lyras DN, Tsinas AC, Saoulidis K, Sarris K. Res Vet Sci. 1998 May-Jun;64(3):187-90.
  20. Evaluating the risk of osteoporotic fractures. G.A. Mazis, V.I. Sakellariou, B.K. Tsouparopoulos, D. Lyras, H. Tsibidakis, P.J. Papagelopoulos, Bone. 2010 21(4): 2-7.

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