1. Spinal Cord Monitoring in Scoliosis Surgery. Experience with 89 Cases. VI th International Symposium on Spinal Cord Monitoring. New York, U.S.A.. May 1995.
  2. Hemivertebrae excision in the surgical treatment of patients with congenital scoliosis. A review of 8 cases. III Congress of European Federation of National Associations of Orthopaedics and Traumatology (E.F.O.R.T.). Barcelona, Spain. April 1997.
  3. A case of pseudo false-positive in spinal cord monitoring. Seventh International Symposium on Spinal Cord Monitoring. Osaka, Japan. March 1998.
  4. Pediatric Thoracoscopic Spinal Surgery. A review of 12 cases . Euro Spine. Innsbruck, Austria. April 1998.
  5. Spinal stabilization in Duchenne Muscular Dystrophy. A review of 28 cases. European Pediatric Orthopaedic Society (E.P.O.S.). Montpellier, France. April 2001.
  6. Hemivertebra Reseccion in the surgical treatment of children with congenital Scoliosis. A review of 17 cases in 16 patients . 38 th Annual Meeting. Scoliosis Research Society (S.R.S.). Québec City, Canada. September 2003.
  7. Spine Surgery. Surgical and Medical Complications. European Society of Intensive Care Medicine. 15th Annual Congress. Barcelona, Spain. 29 septiembre , 2002.
  8. Radiographic evaluation of concave rib osteotomies in the surgical treatment of high magnitude thoracic curves in children and adolescents. A review of 34 patients. European Pediatric Orthopaedic Society (EPOS). Palma de Mallorca, Spain. April 2005.
  9. Asymmetrical eccentric compression effect over the immaturity spine experimental study in growing rabbits. European Pediatric Orthopaedic Society (EPOS). Dresden, Germany. April 2006.
  10. Hemivertebra resection in the surgical treatment of children with congenital scoliosis. A review of 18 cases in 17 patients. International Meeting on Advanced Spine Techniques (IMAS) Athens, Greece, July, 2006.
  11. La técnica de manos libres en el tratamiento quirúrgico de las escoliosis superiores a 70° en el niño y adolescente con tornillos pediculares. A propósito de 55 casos. IX Congreso Iberolatinoamericano de Columna. XXI Congreso nacional de la Sociedad Nacional de la Sociedad para el Estudio de las Enfermedades del Raquis.. Santander. España. 31 Mayo- 2 de Junio de 2007.
  12. Idiopathic Extension Contracture of the Cervical Spine in Children. A review of six cases. Annual Meeting of Spine Society of Europe. Brussels, Belgium October, 3-6, 2007.
  13. Spinal Stabilization in Intermediate Spinal Atrophy Patients (SMA). A review of 46 living cases. Early Onset Scoliosis and Growing Spine (ICEOS) Istanbul, Turkey. November 20-21, 2009.
  14. Lumbar fixation for the surgical management in flaccid neuromuscular scoliosis. A review of 35 patients..European Pediatric Orthopaedic Society (EPOS). 28th meeting 2009. Lisbon (Portugal).
  15. 2010: Spinal disorders in patients with mucopolisacaridosis. European Pediatric Orthopaedic Society (EPOS). 29th meeting. Zagreb (Croatia). April 2010.
  16. Complications of VEPTR instrumentation for progressive spine deformities in young children without rib fusion. A review of 29 cases. Eurospine 2011. Milan (Italy). October 19-21, 2011
  17. Complications of VEPTR instrumentation for progressive spine deformities in early onset scoliosis without rib fusion. A review of 30 cases. ICEOS (Early Onset Scoliosis and growing Spine). Orlando U.S.A. November 18-18, 2011
  18.   ¿Se benefician los pacientes afectos de escoliosis neuromusculares flácida (ENF) con la cirugía?. Is the surgery truly beneficial for patients with flaccid neuromuscular scoliosis?  SILACO /SRS Worldwide International Conference.Buenos Aires Argentina. October 12-14, 2011
  19. Is the surgery truly beneficial for patients with flaccid neuromuscular scoliosis? EPOS 31st Annual Meeting. 4 Helsinki, Suomi, 18–21 April 2012
  20. A new approach for neglected clubfeet over 3 years old: application of Ponseti protocol for relapses. Preliminary results. 4 Helsinki, Suomi, 18–21 April 2012
  21. Painful scoliosis associated to idiopathic retraction of ligamentum nuchae. A review of 15 cases. 6º International Congress on Early Onset Scoliosis & Growing Spine (ICEOS). Doublin, Ireland. 15-16,November 2012
  22. Painful scoliosis associated with idiopathic extension contracture of the cervical spine : a report of fourteen cases. European Paediatric Orthopaedic Society (EPOS), Athen (Greece), 17-20 April 2013
  23. Discitis in childhood : Is it a benign disease without a long term impact?. European Paediatric Orthopaedic  Society (EPOS), Athen (Greece),17-20 April  2013
  24. Distal adding on phenomenon in Lenke 1 A, Adolescent idiopathic Scoliosis treated with pedicle screws.European Paediatric Orthopaedic  Society (EPOS), Athen, Greece  17-20 April  2013
  25. Vertebral congenital malformation: Correlation analysis with rib abnormalities and MRI findings.  European Paediatric Orthopaedic  Society (EPOS), Athen, Greece.17-20 April, 2013
  26. The effectiveness of preoperative halo gravity traction(HGT) in early onset scoliosis (EOS) and severe kyphoscoliosis : clinical and radiological study. 34th EPOS. Marseille,France.15-18 April 2015
  27. Does posterior fusión prevent “parasol deformity”on the chest in immature patients (Risser sign O and open triradiate cartilage of the pelvis) with MSA type II ?. 9th International Congress on Early Scoliosis (ICEOS). Boston, MA, USA