- October 22-23, 1987, Lumbar Disc Surgery, Balgrist Orthopaedic Hospital, University of Zurich, School of Medicine, Zurich, Switzerland.
- March 3-5, 1988, Percutaneous Lumbar Discectomy Review of One Hundred Patients, The Centre Hospitalier General De Blois, Blois, France.
- May 12-14, 1988, Management of Herniated Lumbar Discs, The American Back Society Meeting, Orlando Florida.
- August 11-12, 1988, The History of Disc Surgery, and Percutaneous Lumbar Discectomy-Indication, Technique and Results, University of Berlin, Berlin, Germany.
- March 17-l8, 1989, Posterolateral Suction, Excision of Herniated Lumbar Discs, Current Practice, Brussels, Belgium.
- April 14-15, 1989, Ten Years Experience with Posterolateral Discectomy and Decompression, The American Back Society, Cambridge, MA.
- April 27, 1989, Posterolateral Discectomy Manual Versus Automated Instrumentation, Workshop and Teaching Session, International College of Surgeons Meeting, San Francisco, CA.
- June 14, 1989, Posterolateral Lumbar Discectomy, Didactic Operating Room Presentation with closed circuit television, One Day Symposium, University of Milan, Department of Orthopaedic Surgery, Milan, Italy.
- June 15-16, 1989, Conception, Evolutions and Experience with Percutaneous Posterolateral Discectomy, Balgrist Orthopaedic Hospital, University of Zurich, School of Medicine, Zurich, Switzerland.
- October 15-20, 1989 Percutaneous Lumbar Discectomy, Current Practice, Annual Meeting of The American College of Surgeons, Atlanta, Georgia.
- November 4, 1989, Percutaneous Arthroscopic Microdiscectomy, Kaiser Permanente, Orthopaedic Symposium and Workshop, Advances in Lumbar spine, Newport Beach, CA.
- November 9-10, 1989, Percutaneous Arthroscopic Microdiscectomy Laser Nuclear Ablation, University of Berlin, Department of Neurosurgery, Berlin, Germany.
- January 12-14, 1990, Combined Manual and Automated Method of Percutaneous Discectomy, Meeting of Spinal Disorders, Boca Raton, Florida.
- May 4, 1990, Arthroscopic Microdiscectomy, Laser Nuclear Ablation, The American Back Society, Chicago, Illinois.
- May 5, 1990, Arthroscopic Microdiscectomy Development, Evolution and Current Practice, Meeting of The International College of Surgeons, A symposium on Recent Developments in spinal Instrumentation and Disc Surgery, San Antonio, Texas.
- June 21-22, 1990, Percutaneous Nucleotomy: Experience since 1973, Recent Advancements and Current Trends in the United States, Internation Symposium and Workshop, Orthopaedic University Balgrist, University of Zurich, School of Medicine, Zurich Switzerland.
- November 2, 1990, Clinical Significance and Potential Complications Associated with the Extravasation of Therapeutic and Diagnostic Agents Injected into Intervertebral Discs, Society for Back Pain Research, 38th Scientific Meeting, Regent's College, London, England.
- November 3, 1990, Percutaneous Arthroscopic Microdisectomy, 2nd British Course for Minimal Intervention Surgery to the Lumbar Disc, Royal College of Surgeons, London, England.
- April 26, 1991, Arthroscopic Microdiscectomy, Laser Nuclear Oblation, Extra-Articular Endoscopy Instructional Course, Arthroscopy Association of North America, San Diego, CA.
- June 7-8, 1991, lst Italian/Swiss Course for Vertebral Surgery, under the auspices of International Society for Minimal Intervention in Spinal Surgery, Chairman and Moderator, (1) Microlumbar Disc Excision under Discoscopy through Posterolateral Approach, (2) Endoscopic Laser Nucleolysis vs. Blind Nuclear Ablation.
- June 27-28, 1991, Endoscopic Spine Surgery, Past and Future, 9th Course for Percutaneous Intervertebral Surgery with Discoscopy, under the auspices of ISMISS/SICOT, Balgrist Orthopaedic Hospital, University of Zurich School of Medicine, Zurich Switzerland.
- April 29, 1992, Posterolateral discectomy vs. Nucleotomy, Robert Wood Johnson University Hospital.
- May 15-16, 1992, Arthroscopic Microdiscectomy, Philadelphia Technique, Third British Course on Percutaneous and Minimal Intervention Surgery to the Lumbar Spine, Royal Society of Medicine, London, England.
- May 18, 1992, Minimal Intervention Techniques in Spinal Surgery, University of Oslo, Norway.
- May 22, 1992, Arthroscopic Microdiscectomy-Operative Technique and Indication, Preston Health Authority, Royal Preston Hospital, Preston, England.
- July 4-11, 1992, Comparative Incidence of Degenerative Spondylosis of the Lumbar Spine following Open Posteromedial Discectomy & Percutaneous Posterolateral Discectomy, Coolum Sunshine Coast, QLD, Australia, Robin J.E.D. Higgs, M.D. Course Chairman, Concord Hospital, Concord, N.S.W., Australia.
- July 4-11, 1992, Arthroscopic Microdiscectomy vs. Percutaneous Nucleotomy, Coolum Sunshine Coast, QLD, Australia, Robin J.E.D. Higgs, M.D., Course Chairman, Concord Hospital, Concord, N.S.W. Australia.
- October 3-4, 1992, Arthroscopic Microdiscectomy vs. Percutaneous Nucleotomy, Second Annual East Coast Back Symposium, Boston, MA.
- April 2, 1993, Endoscopic Disc Surgery Techniques. Pennsylvania Neurolosurgical Society Meeting,Philadelphia, Pa.
- April 22, 1993, Minimally Invasive Surgery, Arthroscopic Microdiscectomy. Back Pain '93, New Orleans, Louisiana.
- June 13, 1993, Arthroscopic Microdiscectomy. IV Instructional Course, The Lumbar Spine: State of the Art. Rome, Italy.
- August 24, 1993, Anterior Cervical Fusion using vertical self-locking T-graft. SICOT Pre-Congress/TOA Meeting, Bangkok, Thailand.
- August 24, 1993, Chairman-Session of free papers. SICOT Pre-Congress/TOA Meeting, Bangkok, Thailand.
- August 24, 1993, Evolution and experience with percutaneous posterolateral discectomy. SICOT Pre-Congress/TOA Meeting, Bangkok, Thailand.
- August 24, 1993, Arthroscopic microdiscectomy with and without laser assisting. SICOT Pre-Congress/TOA Meeting, Bangkok, Thailand.
- August 31, 1993, Co-Chairman, Free Paper Percutaneous Discectomy, SICOT 93, Seoul Korea.
- September 3, 1993 Chairman,symposium for the International Society for Minimal Intervention in Spinal Surgery (ISMISS)
- September 3, 1993, Arthroscopic microdiscectomy, Nucleotomy or Targeted Posterior Fragmentectomy. SICOT/ISMISS 93, Seoul Korea.
- September 3, 1993, Arthroscopic arthrodesis of the lumbar spine. SICOT/ISMISS 93, Seoul, Korea.
- November 12, 1993, Endoscopic and Percutaneous Techniques. The Fifth Pan-Philadelphia Neurosurgery Conference: The Management of Disorders of the Spine, Philadelphia, Pa.
- December 2, 1993, Principles and experiences in monoportal arthroscopic microdiscectomy, Endoscopic Interlamina access to Sequestered Disc Herniation. 12th Course for Percutaneous Endoscopic Spinal Surgery. Orthopaedic University Clinic Balgrist, Zurich, Switzerland.
- December 3, 1993, Arthroscopic Arthrodesis of the lumbar spine. 12th Course for Percutaneous Endoscopic Spinal Surgery. Orthopaedic University Clinic Balgrist, Zurich, Switzerland.
- May 18, 1994, Percutaneous Arthroscopic Discectomy: Patient Selection, Methods and Results. Intradiscal Therapy Workshop, 7th Annual Meeting. Aberdeen, Scotland.
- May 21, 1994, Arthroscopic Discectomy. 7th Annual Meeting International Intradiscal Therapy Society, Aberdeen, Scotland.
- June 17, 1994, Arthroscopic Disc Surgery, Second Annual Musculoskeletal and Sports Rehabilitation Focus: Management of Lumbar Disc Disease. Secaucus, New Jersey.
- July 7, 1994, Minimally Invasive Surgery-Indications and Patient Selection, Spine Challenge Meeting, Toronto, Ontario, Canada.
- July 8, 1994, Localization of Level-MRI Facet Blocks-Discograms, Spine Challenge Meeting, Toronto, Ontario, Canada.
- September 9, 1994, J.L. Schaffer & P. Kambin, Minimally Invasive Segmental Stabilization of Lumbar Motion Segments: Comparison of Subcutaneous and Deep Conventional Plate Placement. European Spine Society 5th Annual Meeting, Madrid, Spain.
- November 16, 1994 Arthroscopic Microdiscectomy, XXIX World Congress of the International College of Surgeons, London, England.
- November 18, 1994 1. Arthroscopic Microdiscectomy, 2. Least Invasive Fusion. Fourth British Course on Percutaneous and Minimal Intervention Surgery to the Lumbar Disc, Royal Society of Medicine, London, England.
- February 15, 1995 Arthroscopic Microdiscectomy of the Lumbar Spine from Nucleotomy to Targeted Fragmentectomy, Twenty Years Experience. 11th Annual Meeting Joint Section on Disorder of the Spine and Peripheral Nerves, A Joint Section of the American Association of Neurological Surgeons and Congress of Neurological Surgeons. Phoenix, Arizona.
- February 17, 1995 The Outlook for Minimally Invasive Spinal Surgery. Medical Data International, Trends & Opportunities in the Musculoskeletal Marketplace, Orlando, Florida.
- February 24, 1995 Visiting Professor and guest lecturer, University of Virginia, Department of Neurological Surgery, Charlottesville, VA.
- March 15, 1995 Visiting Professor and guest lecturer at Grand Rounds, Brown University School of Medicine, Providence,Rhode Island.
- March 23, 1995 Presentation and workshop, Arthroscopic Microdiscectomy, Department of Orthopaedic Surgery, Catholic Medical College Kangnam St. Mary's Hospital, Seoul, Korea.
- March 24, 1995 Arthroscopy Microdiscectomy. Arthroscopic Lumbar Fusion (ALF) augmented with removable pedicular bolts and subcutaneous plates. International Symposium: Current Topics on Spinal Surgery. The Research Institute of Clinical Medicine Chonnam University Hospital Kwangju, Korea.
- March 25, 1995 Presentation and workshop, Arthroscopic Microdiscectomy, Department of Neurosurgery, Catholic Medical College Kangnam St. Mary's Hospital, Seoul, Korea.
- March 27, 1995 Presentation and workshop, Arthroscopic Microdiscectomy, Department of Orthopaedic Surgery, School of Medicine, Chiba University, Chiba, Japan.
- April 29, 1995 1. Arthroscopic Visualization and Magnification: The Cornerstone of Minimally Invasive Techniques in Spinal Surgery. 2. Arthroscopic Microdiscectomy Techniques and How to Prevent Neural Injury-Unilateal and Biportal Approaches. St. Luke's Episcopal Hospital 31st Annual Orthopaedic Symposium, Houston, Texas.
- May 26, 1995 1. Posterolateral Intradiscal and Extra-Annular Access to the Spinal Canal for Extraction of Herniated Disc Fragments. 2. Arthroscopic Lumbar Fusion (ALF) Augmented with Removable Pedicular Bolts and Subcutaneous Plates. The 13th Anual G.W.N. Eggers Lectureship, The University of Texas Medical Branch Orthopedic Alumni, Current Concepts on Surgery of the Spine, Galveston, Texas.
- December 8-9,1995 1. Vertebral Body Infection. 2. Percutaneous Fusions. Anterior Column Support of the Thoracolumbar Spine. New York, New York.
- June 15-17, 1995 7th Annual International Spine Workshop, Spinal Research and Education Foundation and The Uniformed Services University of the Health Sciences in conjunction with Walter Reed Army Medical, Washington, D.C., Bethesda National Naval Medical Center, Bethesda, MD, North American Spine Society, Rosemont, IL. Session Chairman, Minimally Invasive/Endoscopy Program, Lectures and Workshop, Bethesda, MD.
- June 18, 1995 Joint International Congress on Minimally InvasiveTechniques in Neurosurgery and Otolaryngology. Arthroscopic Microdiscectomy of the Lumbar Spine from Nucleotomy to Targeted Fragmentectomy: Twenty Years Experience. Pittsburgh, PA.
- September 22-23, 1995 4th International Symposium: New Developments in Spine Surgery and Low Back Treatment. Arthroscopic Lumbar Fusion augmented with Removable Pedicular Bolts and Subcutaneous Plates. Intradiscal and Extra Annular Access to the Spinal Canal (Indications and Techniques), Munich, Germany.
- October 15, 1995 Congress of Neurological Surgeons 45th Annual Meeting. Faculty member, instructional course-Percutaneous Spinal Techniques. Moscone Center South, San Francisco, CA.
- January 29-30, 1996 Minimally Invasive Spinal Surgery Course, Queen's Medical Centre. Principles and Results of Percutaneous Disc Excision. Nottingham, England.
- February 3, 1996 Course on Minimally Invasive Endoscopic Spine Surgery, Wake Forest University, The Bowman Gray School of Medicine, 1. Paralumbar arthroscopic stabilization of lumbar motion segments. 2.Paramedial vs. paralumbar arthroscopic disc surgery, indications, results and complications, Winston-Salem, North Carolina.
- May 17-19, 1996 AAOS Spine Course, Least Invasive Lumbar Spine Surgery, 1. Arthroscopic anatomy of lumbar spine. 2. Arthroscopic lumbar discectomy potential complications. Hands-on workshop, St. Louis, MO.(22 hrs. CME)
- June 5-8, 1996 2nd Annual Current Concepts on Surgery of the Spine. l. Percutaneous Interverteral. Lumbar spinal fusion and stabilization. Techniques and results of surgery. 2. Percutaneous arthroscopic posterolateral intradiscal and foraminal access to the spinal canal for extraction of herniated disc fragment. Technique, patient's selections and results. Hands-one workshop. The University of Texas Medical Branch at Galveston, Texas.(33.5 hrs. CME)
- September 29, 1996 46th annual meeting Congress of Neurological Surgeons. Lecture and workshop, Minimally Invasive Spinal Surgery. Montreal, Quebec Canada. Louis, MO.
- October 12, 1996 North American Traveling Fellows visit to Philadelphia and The University of Pennsylvania School of Medicine. Minimally Invasive Lumbar Spine Surgery. Philadelphia, PA.
- December 7, 1996 AO/ASIF Spine Course. Arthroscopic Microdiscectomy, Davos, Switzerland.
- January 23-24, 1997 15th Course for Percutaneous Endoscopic Spinal Surgery and Complementary Techniques. Percutaneous Lumbar Disc Surgery: 25 years experience, Zurich, Switzerland.
- April 4-6, 1997 Least Invasive Spine Surgery, American Academy of Orthopaedic Surgeons. Arthroscopic Discectomy, Anatomy of Arthroscopic Discectomy. Hands on labs and workshops. St.
- May 14-16, 1997 Arthroscopic Microdiscectomy (AMD). The Ninth Annual International Spine Workshop Jointly sponsored by Uniformed Services University of the Health Sciences Bethesda, Maryland and Spinal Research and Education Foundation. Hands on labs and workshops. Bethesda,Maryland.
- September 28, 1997 Minimally Invasive Spinal Surgery, lecture, lab and workshop, Congress of Neurological Surgeons 47th Annual Meeting, New Orleans, Louisiana
- October 3, 1997 Percutaneous Fusion of the Lumbar spine. 8th International Conference on Lumbar Fusion and Stabilization. San Antonio, Texas.
- October 15-19, 1997 Eastern Orthopaedic Association 28th Annual Meeting. Moderator of Session on Arthroscopic Microdiscectomy and the Future of Minimal Invasive Back Surgery, Scottsdale, Arizona.
November 13-15,1997 Advantages and Limitations of Minimal Invasive Spinal Surgery. Pennsylvania Orthopaedic Society, Wilmington, Delaware (7.5 CME)
- April 16, 1998 Microsurgical Approach to disc Disease. Allegheny University Hospitals, Elkins Park.PA.
- April 27, 1998 Seminar-Minimally Invasive Surgery of the Lumbar Disc. The American Association of Neurological Surgeons, 66th Annual Meeting, Philadelphia, PA.
- May 13-l7, 1998 Arthroscopic Microdiscectomy Lecture and workshop. International Intradiscal Therapy Society, San Antonio, Texas.
- October 2, 1998 Arthroscopic Disc Surgery of the Lumbar Spine and Workshop. Congress of Neurological Surgeons Annual Meeting, Seattle, Washington.
- December 5-6, 1998 Arthroscopic discectomy: indications, results and complications:: is it superior to laser, chymopapine, and percutaneous suction discectomy? The Management of Vertebral Intercorporeal Disorders What works and what doesn't. GICD-USA. Chicago, IL.
- September 18-20, 1999 Current Status of arthroscopic and endoscopic discectomy and foraminal decompression. Arthroscopic anterior column stabilization and fixation of the lumbar spine. 4th Middle East Spine Group Congress, Amman, Jordon.
- November 3-5, 1999 Subligamentous Arthroscopic Microdiscectomy of Lumbar Spine. Arthroscopic Anterior Column Stabilization. IV International Bakirkoy Days. Bakirkoy State Hospital for Psychiatric and Neurological Diseases, Istanbul, Turkey.
- July 20-22, 2000 Current Status and Futureof Arthroscopic and Endoscopic spinal Surgery via a Posterolateral Access. Presidential Guest Speaker, 24th Annual Scientific Meeting, the American Academy of Neurological and Orthopaedic Surgeons, Las Vegas, Nevada.
- October 6-7,2000 Turkish Neurosurgical Society, University of Antayla. "Evolution and Current Status of Arthroscopic and Endoscopic Microdiscectomy" and "Role of Minimally Invasive Surgery in Management of Discogenic Pain and Segmental Instability.
- December 7, 2000 1st World Congress of Minimally Invasive Spinal Medicine and Surgery. "Evolution and Current Status of Arthroscopic and Endoscopic Spinal Surgery.
- December 9, 2000 "Controversies and Challenges in Spine Surgery." "Evolution, Current Status and Future of Arthroscopic and Endoscopic Spine Surgery."
- August 30, 2002 "Introduction, Subligamentous Access to Contained and Non-Migrated Sequestered Disc Herniation" Chairman Current Trends, Minimally Invasive Spine Surgery, SICOT XXII World Congress, San Diego, CA.
- December 8-11,2002 "History and Evolving Methodology in Arthroscopic and Endoscopic Spinal Surgery" AAMISMS Third World Congress, Phoenix, AZ
- December 13 & 14, 2002 "Evolution of Techniques in Arthroscopic and Endoscopic Spine Surgery" 15th Annual Meeting of GIEDA INTER RACHIS, Paris, France.
- January 29/30, 2004 "Philadelphia experience with minimal invasive spinal surgery" International 22nd Course for Percutaneous Endoscopic Spinal Surgery and Complementary Techniques, Zurich, Switzerland.
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