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  • Ischemic Necrosis of the Femoral Head. 1979, Buenos Aires.
  • Hemophilic Synovitis. Treatment. Meeting of the World Federation of Hemophilia. 1980, Montreal.
  • Congenital Factor VII Deficiency. Orthopedic Findings. International Hemophilia Congress. Cadiz.
  • Chronic Hemophilic Synovitis. 1st International Hemophilia Conference. October, 1980. Bonn.
  • "Application of QIB in Knee Osteotomy Due to Hemophilic Arthropathy." XIV Congress of the World Federation of Hemophilia. San Jose, Costa Rica, July of 1981.
  • "Fractures in the Hemophiliac Patient." XIV Congress of the World Federation of Hemophilia. San Jose, Costa Rica, July 1981.
  • External Fixator, Simple Assembly in the Tibia. Knee Osteotomy and Hemophilic Arthropathy. Free and Vascularized Fibula Bone Graft. XIV Luso-Spanish Congress of Orthopedics and Traumatology. 1983, Coimbra.
  • Prophylatic Treatment of Hemophilic Arthopaties with Recurrent Hearmatrosis. Int XVI Congress of the World Federation of Hemophilia. 1984, Rio de Janeiro.
  • Ultrasounds in the Diagnosis of Hemophilic Osthopathy. XVII International Congress of the World Federation of Hemophilia. 1986, Milan.
  • Isoelastic Total Hip Replacement Multicentric Study. 1987, Munich.
  • Pubalgia Surgical Therapy. II Simposium Internationalle della Medicina Aplicata Al Calcio. 1987, Venice.
  • Totally Displaced Supracondylar Fractures of the Humerus in Children. 1987, Munich.
  • Arthoscopy Implantation A.C.L. With Our Own Guide. 1988, Amsterdam.
  • Recent Advances in Hemophilia Care. Long term Results of Two Combinations of Treatments. April of 1989, Los Angeles, USA.
  • International Symposium Orthopedic in Hemophilia. 2 Speeches. 1989, Italy.
  • "Traumatic Lesions of the TFCC in Sportmen Wrist". International Arthroscopy Congress. Barcelona, July 22nd, 1992.
  • "Treatment of Anterior Recurrent Instability with Arthroscopic Technique", "Rotator Cuff Tear. Arthroscopic Treatment", "Acromioplasty with Arthroscopic Technique", XXIII Congress of the Mexican Society of Orthopaedics; the Society’s 50th Anniversary. April 28 to May 3, 1996, Mexico.
  • "Improving Arthroscopy Cannulas", Annual Linvatec Global Arthroscopy Study Group. From May 8-12, 1996. Useppa Island, Florida.
  • "Arthroscopy Bankart Repair. Study of Recidives" Arthroscopic Shoulder Techniques International Course, held from December 11-13, 2003 at the Department of Anatomy and Embryology, Faculty of Medicine, University of Barcelona, organized by Smith & Nephew.
  • "Inverted Bipolar Shoulder Prosthesis", IV International Arthroplasty Course held from April 12-15, 2005; organized by Universidad Autonoma de Barcelona and Hospital Vall d'Hebron.
  • "Arthroscopy Bankart Repair. Study of Recidives", 5th International Meeting of The Ikeuchi International Society for Athroscopy and Musculoskeletical Endoscopy, held from May 23-25 of 2005, in Barcelona.
  • "Subscapularis Impingement", 3rd Arthroscopic Shoulder Techniques International Course of  ISAKOS  at the Laboratory of Arthroscopic & Surgical Anatomy of the University  Barcelona, October 20- 22nd,  2005.
  • Participation in the Participatory Hearing of the Scientific Session: Shoulder Instability, Iberoamerican Forum 2008, held in Madrid from June 19-21 of 2008, by DePuy.
  • "Shoulder Instability. Arthroscopy Treatment", "Coracoplastia" and “Astragalus Osteochondritis. Arthroscopic Treatment", Orthopedics International Conference, held in Cochabamba (Bolivia) from September 9-12, 2009.