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    X-STOP

Ken Hsu, MD

Dr. Ken Hsu is one of the senior spine surgeons in our group. After receiving his medical degree at the State University of New York Downstate Medical Center in 1976, he completed a 1-year internship at Loma Linda Medical Center. Following this he finished a 2-year general surgery residency at Mt. Zion Hospital in San Francisco and a 4-year orthopaedic residency at the San Francisco Orthopaedic Residency Program, where he has continued to serve as a faculty member for nearly two and a half decades since his graduation. Following his residency, Dr. Hsu completed a fellowship in Spine and Pediatric Orthopaedic Surgery at the University of Hong Kong, one of the premiere centers of surgical spine care at that time.

Ken Hsu has been the President of San Francisco Orthopaedic Surgeons Medical Group since 2003 and a director of spine services at St. Mary’s Spine Center since 1988.

Dr. Hsu is world-renowned as a co-inventor of the X-STOP device, a minimally invasive surgical solution for patients with symptomatic lumbar spinal stenosis and the first Interspinous Decompression Device (IPD) to be approved by FDA for use in the United States. X-STOP has started an era of Interspinous Process Decompression both in the US and in the rest of the world. He presented at numerous national and international conferences on the topics of spine surgery and the X-STOP procedure. Dr. Hsu has also authored numerous peer-reviewed publications and book chapters in surgical textbooks.

Ken Hsu was among the first spine surgeons to use pedicle screw fixation of the spine in the Western United States. Well-known for his astuteness and unique humor, Dr. Hsu has participated in numerous clinical trials of spine surgical devices, including X-STOP, Flexicore and Prodisc lumbar total disc replacement and Cervicore cervical total disc replacement.

Ken Hsu, MD

Spine Surgery

San Francisco Orthopaedic Surgeons, Inc.
One Shrader Street, Suite 450,
San Francisco, CA 94117

(415)750-5570
www.spine-dr.com

Education

• High School

• St. Joseph College
  Junior High and High School
  Yokohama, Japan

• College

• Manhattan College, New York
  Major – Biology
  Degree – Bachelor of Science, 1972

• Medical

• State University of New York
  Downstate Medical Center
  Degree – Doctor of Medicine, 1976

• Internship

• Loma Linda University Medical Center
  Loma Linda, California
  Internal Medicine, 1976-1977

• Residencies

• Mt. Zion Hospital
  San Francisco, California
  General Surgery, 1977-1979

• San Francisco Orthopaedic Residency Training Program
  St. Mary’s Hospital and Medical Center
  San Francisco, California
  Orthopaedic Surgery, 1979-1983

• Fellowship

• University of Hong Kong
  Spine Surgery, Pediatric Orthopaedic Surgery Fellowship
  Research Associate
  Duchess of Kent Children’s Hospital, 1983-1984

Certification

• Diplomate, American Board of Orthopaedic Surgery
  Board Certified July 26, 1986
  Re-certified January 1, 1997

• Fellow, American Academy of Orthopaedic Surgeons, 1988

• Qualified Medical Evaluator, 1995
  State of California
  Department of Industrial Relations
  Industrial Medical Council

Hospital Appointments

• 1984 to present
  Attending Orthopaedic Surgeon
  Spine Center
  St. Mary’s Hospital and Medical Center
  San Francisco, California

• 1984 - 1991
  Consulting Spine Surgeon
  Veterans’ Administration Hospital
  Martinez, California

• 1988 to present
  Director of Orthopaedic Services
  Spine Center
  St. Mary’s Hospital and Medical Center
  San Francisco, California

Professional Affiliations

• Voluntary Clinical Faculty, Stanford University School of Medicine, December 1, 1999 to present

• Clinical Instructor, Department of Functional Restoration (Orthopaedic Surgery), Stanford University School of Medicine, December 1, 1999 to present

• Scientific Advisory Board, St. Francis Medical Technologies, 1999 to present

• Spine Editorial Advisory Board, Reviewer for Spine Journal, 1994 to present

• International Society for the Study of the Lumbar Spine

• American Medical Association

• President, San Francisco Orthopaedic Surgeons Medical Group, 2001 to present

• Clinical Faculty, San Francisco Orthopaedic Surgery Residency Program, July 1984 to present

• California Medical Association

• San Francisco Medical Society

• North American Spine Society

Honor Societies

• Epsilon Sigma Pi, 1971

• Phi Beta Kappa, 1972

Licensure

• California – G035379

• Federal Drug Enforcement
  Administration Registration – BH-0687181

Research Experience

• Manhattan College, New York, 1971
  Laboratory of Plant Morphogenesis
  Enzyme Control in Plant Tumors

• State University of New York
  Downstate Medical Center, 1983
  Immunology of Sjogren’s Syndrome
  Rabbit Model

• California Pacific Medical Center, 1991-1993
  Percutaneous Spine Surgeries
  Porcine Models

Clinical Studies Investigator

• Pilot Study, X Stop: Interspinous Process Distraction for Treatment of Lumbar Spinal Stenosis, 1997

• X Stop – IDE Study, 2000-2002

• ProDisc: Lumbar Total Disc Replacement – IDE Study, 2002-2005

• Fziomed – Oxiplex/Sp Gel – IDE Study, 2002-2005

• FlexiCore: lumbar Total Disc Replacement – IDE Study, 2004-2005

• Cortoss Vertebroplasty – IDE Study, 2005

• Enrolled in Bryant Cervical Disc Replacement IDE Study, 2005

• Enrolled in Cervicore Cervical Disc Replacement IDE Study, 2005

Training Courses

• “Musculoskeletal Trauma,” AAOS Course, San Francisco, California, May 1982.

• UCLA Prosthetics and Rehabilitation Course, Los Angeles, California, March 1982.

• Pediatric Orthopaedic Symposium by M. Tachdjian, San Francisco, California, May 1982 and Chicago, Illinois, May 1983.

• VSP Instrumentation (pedicle screw) in Lumbar Spine Fusions, Dr. Arthur Steffee, Cleveland, Ohio, August 1984.

• Anterior Lumbar Spine Fusion, Dr. Harry Crock, Melbourne, Australia, April 1985.

• VSP Instrumentation (pedicle screw) in Thoracic and Lumbar Spine Fusions, Dr. Arthur Steffee, Cleveland, Ohio, November 1985.

• Orthopaedic Pathology, University of Pennsylvania Review Course, Atlantic City, New Jersey, June 1986.

• Midas Rex Technique in Surgical Dissection, Worcester, Massachusetts, August 1987.

• Myeloscopy Technique in Lumbar Spine, Boston, Massachusetts, August 1987.

• Anterior Spine Fusion: Kaneda Instrumentation Technique, Professor Kiyoshi Kaneda, Sapporo, Japan, May 1989.

• Arthroscopic Microdiscectomy – Fifth International Symposium, Philadelphia, Pennsylvania, November 1990.

• Graf Instrumentation, Dr. Henry Graf, Paris, France, May 1991.

• Lumbar Discectomy – Kramer Technique, Professor J. Kramer, Ruhr University, Bochum, Germany, May 1991.

• California Orthopaedic Association, QME Education Program, May 21, 1994.

• Osler Institute, Orthopaedic Surgery Review Course, Chicago, Illinois, July 22-27, 1994.

• Ray Threaded Fusion Cage Surgical Technique Training Workshop, San Francisco, California, February 7, 1998.

• Threaded Construct for Interbody Spine Surgery Workshop, San Francisco, California, November 21, 1998.

• Technique for Percutaneous Electrothermal Treatment of Discogenic Pain (IDET) Workshop, Stanford, California, March, 1999.

• PDN Prosthetic Disc Nucleus Workshop, Kona, Hawaii, June 21, 1999.

• Vertebroplasty Training Workshop, Las Vegas, Nevada, November 17, 2000.

• Hands-On Cadaver Workshop on Skull Base and Spine, Professor Hiroshi Nakagawa, Aichi Medical University, Aichi, Japan, May 2001.

• Kyphon Inflatable Bone Tamp Technology Course, Stanford Medical Center, Stanford, California, October 5, 2001.

• MRI of the Head and Spine: National Symposium, Las Vegas, Nevada, April 15-17, 2002.

• Endius Percutaneous Fusion Technique Training Workshop, Palo Alto, California, October 17, 2002.

• Medtronics Spine Surgery Workshop TLIF, Sextant, Daly City, California, February 25, 2003

• Centerpulse, Center of Excellence (Spine-Tech), St. John’s Health Center, Santa Monica, California, Advanced Spine Preceptorship, June 5-6, 2003.

• Globalspine, International Course on Latest Technology in Spine Surgery (Medtronics), SSAF, Laguna Niguel, California, June 27-29, 2003.

• NuVasive Neurovision and XLIF Training Workshop, San Diego, Calfornia, October 25, 2003.

• Charité Artificial Disc, Comprehensive Training Program, Cincinnati, Ohio, December 14-15, 2004.

Conference Presentations

• University of California at San Francisco, San Francisco Bay Area, Orthopaedic Grand Rounds:

  1. “Orthopaedic Problems in Ballet Dancers,” November 1979 at Seton Medical Center

  2. “Tibial Plateau Fracture,” January 1982, at Kaiser Hospital/San Francisco

  3. “Luque: Segmental Spinal Instrumentation,” January 1983, at Kaiser Hospital/San Francisco

• “Deterioration of Motion Segments Adjacent to Lumbar Spine Fusions,” International Society for the Study of the Lumbar Spine, Miami, Florida, April 14, 1988.

• “Deterioration of Motion Segments Adjacent to Lumbar Spine Fusions,” North American Spine Society, Colorado Springs, Colorado, July 26, 1988.

• “Internal Fixation Techniques in Spinal Surgery,” Western Orthopaedic Association of Northern California Chapter Meeting, Scientific Program, September 29, 1988.

• “Use of Internal Fixation: Techniques and Complications”;

• “Degeneration of Adjacent Motion Segments Above Fusions”;

• “Hands-On Workshop – Spinal Surgery”.

• American Back Society, Fall Symposium on Back Pain, December 2, 1988.

• “Long-Term Follow Up of Patients Undergoing Lumbar Fusion,” San Francisco Spine Institute, State of Art ’88 Research Update, December 10, 1988.

• “Low Back Pain: Diagnosis and Treatments,” St. Mary’s Hospital, Medical House Staff Lecture Series, San Francisco, January 12, 1989.

• “Deterioration of Motion Segments Adjacent to Lumbar Spine Fusion,” Federation of Spine Associations Meeting, Las Vegas, Nevada, February 12, 1989.

• “Pseudarthrosis of Lumbar Spine Fusion: Origin of Pain and Treatment,” International Society for the Study of the Lumbar Spine, Kyoto, Japan, May 17, 1989.

• “High Lumbar Disc Degeneration: Incidence and Etiology,” International Society for the Study of the Lumbar Spine, Kyoto, Japan, May 17, 1989.

• “High Lumbar Disc Degeneration: Incidence and Etiology,” North American Spine Society, Quebec City, Canada, July 2, 1989.

• “Perspective on Pain,” The Challenge of the Lumbar Spine, 1989, Surgery-Fusion, San Francisco, California, November 3, 1989.

• “Pseudarthrosis of Lumbar Spine Fusion: Origin of Pain and Treatment,” North American Spine Society, Monterey, California, August 11, 1990.

• “Advanced Approaches to Conservative Care of the Cervical Spine: Differential Diagnosis of Neck and Upper Extremity Pain,” St. Mary’s Spine Center, San Francisco, California, January 23, 1991.

• “Demineralized Allograft in Posterior Lateral Fusion – Clinical Efficacy in a Prospective Study,” International Society for the Study of the Lumbar Spine, Heidelberg, Germany, May 15, 1991

• “Calcified Lumbar Disc Herniations,” North American Spine Society, Keystone, Colorado, August 1, 1991.

• “Unusual Clinical Features in Multi-Level Disc Degeneration in the Second and Third Decades, Associated Structural Abnormalities, North American Spine Society, Keystone, Colorado, August 1, 1991.

• “Combined Anterior Interbody and Posterior Lateral Lumbar Spine Fusion with Plate Fixation for Severe Instability and Resistant Pseudarthrosis:, Fifth International Conference on Lumbar Fusion and Stabilization, Osaka, Japan, November 8, 1991.

• “Long-Term Effect of Lumbar Spine Fusion: Deterioration of Adjacent Motion Segments,” Fifth International Conference on Lumbar Spine Fusion and Stabilization, Osaka, Japan, November 8, 1991.

• “Pseudarthrosis of Lumbar Spine Fusions; When is it Symptomatic?” Fifth International Conference on Lumbar Spine Fusion and Stabilization, Osaka, Japan, November 8, 1991.

• “Combined Anterior Interbody and Posterior Lateral Lumbar Spine Fusion with Plate Fixation for Severe Instability and Resistant Pseudarthrosis,” Hong Kong Orthopaedic Association, Eleventh Annual Congress, Hong Kong, November 16, 1991.

• “High Lumbar Disc Degeneration,” American Back Society, San Francisco, California, December 13, 1991.

• “Combined Anterior Interbody and Posterior Lateral Lumbar Spine Fusion with Plate Fixation for Severe Instability and Resistant Pseudarthrosis,” American Back Society, San Francisco, California, December 13, 1991.

• “Thoracic Pain Problems,” American Back Society, San Francisco, California, December 11, 1992.

• “Spinal Injections – For Diagnosis and Treatment Workshop,” American Back Society, San Francisco, California, December 11, 1992.

• “St. Mary’s Spine Center Workshop,” American Back Society, San Francisco, California, December 11, 1992.

• “Lumbar Spine Fusions and Instrumentation in Degenerative Disease,” University of California, San Francisco, Orthopaedic Grand Round, March 27, 1993.

• “Calcified Lumbar Disc Herniations,” American Back Society, San Francisco, California, December 2, 1993.

• “Differential Diagnosis of Thoracic Pain,” American Back Society, San Francisco, California, December 3, 1993.

• “Pseudarthrosis of Lumbar Spine Fusion: Origin of Pain and Treatment,” California Orthopaedic Association Annual Meeting, Squaw Valley, California, May 20, 1994.

• “Recurrent Same-Level Lumbar Disc Herniation: Analysis of Predisposing Factors,” North American Spine Society, Tenth Annual Conference, Washington, D.C., October 19, 1995.

• Moderator, Basic Science Break-Out Session, North American Spine Society Annual Conference, Vancouver, British Columbia, Canada, October 24, 1996.

• “Anatomic Position of Lumbar Disc Herniations and Clinical Outcomes,” American Back Society, San Francisco, California, December 12, 1996.

• “Facet Joint Cysts – Spectrum of the Disease and Treatment,” American Back Society, San Francisco, California, December 12, 1996.

• “Spine Surgery for the Next Millenium,” American Back Society, San Francisco, California, December 8, 1997.

• “Sten-X, Interspinous Process Distraction for Treatment of Lumbar Spinal Stenosis” (in Japanese), Guest Lecture, Department of Neurological Surgery, Aichi Medical University, Japan, May 12, 2001.

• “A New and Minimally Invasive Surgical Treatment for Lumbar Spinal Stenosis,” San Francisco Orthopaedic Residency Program, Research Day Guest Alumnus Speaker, June 2001.

• “Spinal Stenosis – Role of Sten-X,” Neurological Forum, Hokkaido University, Japan, February 4, 2002.

• “Lumbar Spinal Stenosis,” Orthopaedic Surgery Lecture, Mie University, Japan, February 2002.

• “New Surgical Treatment for Lumbar Spinal Stenosis,” The Ninth Spine Frontier Meeting, Lake Side Shikaribetsu, Hokkaido, Japan, August 1, 2002.

• “State of the Art, X-Stop in Treatment of Lumbar Spinal Stenosis and Axial Back Pain, Progress Report in U.S.A. and Japan,” St. Francis Medical Technology Medical Advisory Panel Meeting, Napa, California, October 18-19, 2002.

• Moderator, “Lumbar Spine Outcomes,” North American Spine Society Annual Meeting, Montreal, Canada, November 2, 2002.

• X-Stop: A New Device for Surgical Treatment of Spinal Stenosis and Back Pain, in Addition to a Brief Review of Other Current Surgical Alternatives,” American Back Society, Las Vegas, Nevada, November 14, 2003.

• Director, “Surgical Bioskill Workshop,” American Back Society, Las Vegas, Nevada, November 15, 2003.

• “Interspinous Process Decompression (IPD) Significantly Improves Symptom Severity in Neurogenic Intermittent Claudication Patients,” North American Spine Society Annual Meeting, Chicago, Illinois, October 30, 2004.

• “Minimally Invasive Procedure for Lumbar Spinal Stenosis,” American Back Society, Las Vegas, Nevada, December 10, 2004.

• Moderator: Surgical Consultation Clinic, American Back Society, Las Vegas, Nevada, December 11, 2004.

Publications

1. “Severe Scoliosis Associated with Fibrodysplacia Ossificans Progressiva:, Louis Hsu, Ken Hsu, John Leong. Spine Vol. 11, 36 p643. 1986.

2. “Lumbosacral Fusion with Harrington Rods and Intersegmental Wiring,” Arthur White, James Zucherman, Ken Hsu. Clin. Ortho. Rel. Research 203:185, February 1986.

3. “Failed Posterior Spine Surgery,” Arthur White, Ken Hsu. Lumbar Spine Surgery, Chapter 13, p322, C.V. Mosby Co., St. Louis, Missouri, 1987.

4. “Bone Grafts and Implants in Spine Surgery,” Ken Hsu, James Zucherman, Arthur White. Lumbar Spine Surgery, Chapter 39, p434, C.V. Mosby Co., St. Louis, Missouri, 1987.

5. “Internal Fixation with Pedicle Screws,” Ken Hsu, James Zucherman, Arthur White. Lumbar Spine Surgery, Chapter 13, p322, C.V. Mosby Co., St. Louis, Missouri, 1987.

6. “Early Results and Complications Using Variable Spine Plating Internal Fixation,” James Zucherman, Ken Hsu, Gar Wynne. International Society for the Study of the Lumbar Spine – Abstracts, May , 1987.

7. “Early Results and Complications Using Variable Spine Plating Internal Fixation,” James Zucherman, Ken Hsu, Arthur White, Gar Wynne. North American Spine Society Annual Meeting – Abstracts, June, 1987.

8. “Early Experience with Variable Spine Plating System,” James Zucherman, Ken Hsu, Arthur White, Gar Wynne. Spine Vol. 13, No. 5, September 1988.

9. “Painful Lumbar Endplate Disruptions: A Significant Discogenic Finding,” Ken Hsu, James Zucherman, Richard Derby, Arthur White. Spine Vol. 13, No. 1, April 1988.

10. “Diptheroid and Associated Infections as a Cause of Failed Lumbar Instrumentation Procedures,” James Zucherman, Leslie Schofferman, Helen Gunthorpe, Ken Hsu, Arthur White. International Society for the Study of the Lumbar Spine – Abstracts, April 1988.

11. “Occult Infections Causing Persistent Low Back Pain,” Leslie Schofferman, Jerome Schofferman, James Zucherman, Helen Gunthorpe, Ken Hsu, George Picetti, Noel Goldthwaite, Arthur White. Spine Vol. 14, No. 4, 1989.

12. “Deterioration of Motion Segments Adjacent to Lumbar Spine Fusions,” Ken Hsu, James Zucherman, Arthur White, Noel Goldthwaite. International Society for the Study of the Lumbar Spine – Abstracts, April 1988.

13. “High Lumbar Disc Degeneration: Incidence and Etiology,” Ken Hsu, James Zucherman, Arthur White. International Society for the Study of the Lumbar Spine – Abstracts, May 1989.

14. “Operative Confirmation of Disco-CT Findings,” William Shea, James Zucherman, Ken Hsu, Ron Hood. International Society for the Study of the Lumbar Spine – Abstracts, May 1989.

15. “Clinical Efficacy of Spine Instrumentation in Lumbar Degenerative Disease,” James Zucherman, Ken Hsu, George Picetti, Gar Wynne, Arthur White. International Society for the Study of the Lumbar Spine – Abstracts, May 1989.

16. “Pseudarthrosis of the Lumbar Spine: Origin of Pain and Treatment,” Ken Hsu, James Zucherman, Jerome Schofferman. Internal Society for the Study of the Lumbar Spine – Abstracts, May 1989.

17. “Clinical Efficacy of Spinal Instrumentation in Lumbar Degenerative Disease,” James Zucherman, Ken Hsu, Gar Wynne, Arthur White. North American Spine Society – Abstracts, July 1989.

18. “Cervical Epidural Corticosteroid Injection in Degenerative Disease,” Richard Derby, James Zucherman, George Picetti, Ken Hsu, Arthur White, Gar Wynne. North American Spine Society – Abstracts, July 1989.

19. “Sympathetically Mediated Pain Disorders of the Lumbar Spine,” James Zucherman, James Dwyer, Ken Hsu, Linda Rasmussen, Jerome Schofferman, Arthur Schuller, Richard Derby, Susan Bailey. International Society for the Study of the Lumbar Spine – Abstracts, June 1990.

20. “Usefulness of Short-Acting Barbiturate Examination in Evaluation Patients with Complex Lumbar Pain Syndromes,” James Zucherman, Richard Derby, Ken Hsu. International Society for the Study of the Lumbar Spine – Abstracts, June 1990.

21. “Myth of the Solid Posterior Fusion,” Stephen Brack, James Zucherman, Ken Hsu, William Shea. International Society for the Study of the Lumbar Spine – Abstracts, June 1990.

22. “Single Plane Midline Flexion Extension Lateral Tomogram as a Method for Evaluating the Integrity of Lumbar Spine Fusion,” Jeff Kanel, James Zucherman, William Shea, Ken Hsu. International Society for the Study of the Lumbar Spine – Abstracts, June 1990.

23. 23 “High Lumbar Disc Degeneration: Incidence and Etiology,” Ken Hsu, James Zucherman, Spine, Vol. 15, No. 7 p679-682, 1990.

24. “Sympathetically Mediated Pain Disorders of the Lumbar Spine,” James Zucherman, James Dwyer, Ken Hsu, Linda Rasmussen, Jerome Schofferman, Arthur Schuller. North American Spine Society – Abstracts, August 1990.

25. “Metabolic Bone Disease in Pseudarthrosis,” Jerome Schofferman, Leslie Schofferman, James Zucherman, Ken Hsu, Arthur White. Spine, Vol. 15, No. 7 p687-689, 1990.

26. “Demineralized Allograft in Posterior Lateral Fusion – Clinical Efficacy in a Prospective Study,” James Zucherman, Steven Brack, Ken Hsu, Gary Levengood. International Society of for the Study of the Lumbar Spine – Abstracts, May 1991.

27. “Demineralized Allograft in Posterior Lateral Fusion – Clinical Efficacy in a Prospective Study,” James Zucherman, Steven Brack, Ken Hsu, Gary Levengood. North American Spine Society – Abstracts, August 1991.

28. “Calcified Lumbar Disc Herniations,” Ken Hsu, James Zucherman, Scot Miller, William Shea. North American Spine Society – Abstracts, August 1991.

29. “Unusual Clinical Features in Multi-Level Disc Degeneration in the Second and Third Decades, Associated Structural Abnormalities,” Ken Hsu, James Zucherman, Arthur Schuller. North American Spine Society – Abstracts, August 1991.

30. “The Hip and Back Syndrome – An Algorithm for Evaluation and Treatment,” William A. McGann, Ken Y. Hsu. Ortho News, St. Mary’s Hospital, Winter 1991.

31. “Steroid Response and Duration of Radicular Pain as a Predictor of Surgical Outcomes,” Richard Derby, Garrett Kine, Katy Murphy, James Reynolds, Noel Goldthwaite, Arthur White, Ken Hsu, James Zucherman. Spine, June 1992.

32. “Clinical Efficacy of Spinal Instrumentation in Lumbar Degenerative Disc Disease,” James Zucherman, Ken Hsu, George Picetti, Arthur White, Gar Wynne, Lloyd Taylor. Spine, Vol. 17, No. 7, p834-836, 1992.

33. “Lumbar Intraspinal Synovial and Ganglion Cysts: Ten-Year Experience in Evaluation and Treatment,” Ken Hsu, James Zucherman, William Shea, Robert Jeffrey. International Society for the Study of the Lumbar Spine – Abstracts, June 1993.

34. “Dynamic Contrast Radiography in Degenerative Cervical and Lumbar Disease,” Michael Martin, James Zucherman, William Shea, Ken Hsu. International Society for the Study of the Lumbar Spine – Poster Exhibit, June 1993.

35. “The Myth of Solid Posterior Lateral Fusion,” James Zucherman, Steven Brack, Ken Hsu, William Shea. Lumbar Fusion and Stabilization, Chapter 1.2, p10-15. K. Yonenobu, K. Ono, Y. Takemitsu (Eds.), Springer-Verlag, Tokyo, Berlin, Heidelberg, New York, 1993.

36. “The Long-Term Effect of Lumbar Spine Fusion: Deterioration of Adjacent Motion Segments,” Ken Hsu, James Zucherman, Arthur White. Lumbar Fusion and Stabilization, Chapter 2.4, p54-64. K. Yonenobu, K. Ono, Y. Taketmitsu (Eds.), Springer-Verlag, Tokyo, Berlin, Heidelberg, New York, 1993.

37. “The Anatomic Position of Disc Herniation Predicts the Clinical Outcome of Lumbar Discectomy,” Barbara M. Knopp-Jergas, James Zucherman, Ken Hsu, Bradford Delong. International Society for the Study of the Lumbar Spine – Poster Exhibit

38. “Lumbar Intraspinal Synovial and Ganglion Cysts (Facet Cysts): Ten Year Experience in Evaluation and Treatment,” Ken Hsu, James Zucherman, William Shea, Robert Jeffrey. Spine, Vol. 20, No. 1, p80-89, 1995.

39. “Instrumented Laparoscopic Spinal Fusion, Preliminary Results,” James Zucherman, Thomas Zdeblick, Susan Bailey, David Mahvi, Ken Hsu, Doug Kohrs. Spine, Vol. 20, No. 18 p2029-2034, 1995.

40. “Recurrent Same-Level Lumbar Disc Herniation: Analysis of Predisposing Factors,” Ken Hsu, James Zucherman, Thomas Kim, Bradford Delong, Judy Silverman. Proceedings of North American Spine Society, Tenth Annual Conference, Washington, D.C., October 1995.

41. “Bone Grafts and Implants,” Ken Hsu, James Zucherman, Arthur White. Chapter 63, p870-890, Spine Care - Mosby Yearbook, Inc., 1995.

42. “Complications of Transpedicle Spine Fixation,” Ken Hsu, James Zucherman, Martin Krag. The Lumbar Spine, Second Edition. The International Society for the Study of the Lumbar Spine. W.B. Saunders Company, Philadelphia, Pennsylvania, 1996.

43. “Disc Space Geometry as a Predictor of Fusion Solidity of BAK Interbody Implants,” Dante Implicito, James Zucherman, Ken Hsu. International Society for the Study of the Lumbar Spine – Abstracts, July 1996.

44. “Endoscopy of the Lumbar Spine,” James Zucherman, Dante Implicito, Ken Hsu. Endoscopic Neurosurgery, Thieme Medical Publishers, Inc., New York, New York, 1996.

45. “Anatomic Position of a Herniated Nucleus Pulposus Predicts the Outcome of Lumbar Discectomy,” Barbara Knopp-Jergas, James Zucherman, Ken Hsu, Bradford Delong. Journal of Spine Disorders, Vol. 9, No. 3, p246-250. Lippincott-Raven Publishers, Philadelphia, 1996.

46. “Instrumented Transperitoneal Laparoscopic Fusion,” James Zucherman, Ken Hsu, Dante Implicito. Lumbosacral and Spinopelvic Fixation, Edited by Joseph Y. Margulies, et al., Chapter 45, p579-585. Lippincott-Raven Publishers, Philadelphia, Pennsylvania, 1996.

47. “Reliability of Computerized Motion Analysis as a Detector of Significant Lumbar Disc Pathology,” Megumi Itoi, Y. Hirasawa, James Zucherman, Ken Hsu, Erica Gould. Proceedings of the Eighth World Congress of International Rehabilitation Medicine Association, Kyoto, Japan, September 1997.

48. “Spine Surgery for the Next Millennium,” Ken Hsu, spine-dr.com, December 1997.

49. “Percutaneous Cervical Discectomy,” Mark Drzala, James Zucherman, Ken Hsu. North American Spine Society – Abstracts, October 1998.

50. “Complication Management of BAK Interbody Cages,” James Zucherman, Ken Hsu, Dante Implicito. Revision Spinal Surgery, Edited by Joseph Y. Margulies, et al., C.V. Mosby, St. Louis, Missouri, 1999.

51. “BMP Induced Interbody Fusion of the Rabbit Spine,” A. N. Shamie, James Zucherman, Mark Drzala, Ken Hsu, Susan Bailey, D. Chang, J. Roche, Proceedings International BMP Conference 2000, Lake Tahoe, California, July 2000.

52. “Follow-Up Evaluation of Resected Lumbar Vertebral Chordoma Over 11 Years, a Case Report,” Ken Hsu, James Zucherman, Norval Mortensen, James Johnston, John Gartland. Spine, Vol. 25, No. 19, p2537-2540, 2000.

53. “The Sten-X for Treatment of Spinal Stenosis, Minimally Invasive Technique,” Ken Hsu—Abstracts, The 7^th Hands-On Cadaver Workshop on Skull Base and Spine, Aichi, Japan, May 2001.

54. “Gadopentate Dimeglumine as an Intradiscal Contrast Agent,” Timothy Huang, James Zucherman, Ken Hsu, Michael Shapiro, Daniel Lentz, John Gartland. Spine, Vol. 27, No. 8, p839-843, 2002.

55. “The Effect of an Interspinous Spacer on the Intradiscal Stress of the Adjacent and Levels Treated,” Kyle E. Swanson, D.P. Lindsey, Ken Y. Hsu, James F. Zucherman, Scott A. Yerby. Trans. International Meeting on Advanced Techniques, 2002.

56. “The Treatment of Lumbar Intermittent Neurogenic Claudication with an Interspinous Spacer: One Year Results,” James Zucherman, Ken Hsu, Charles Hartjen, Thomas Mehalic, Michael Martin, Dante Implicito. International Society for the Study of the Lumbar Spine – Abstracts, May 2002.

57. “The New Surgical Treatment for Lumbar Spine Stenosis,” Ken Hsu, James Zucherman, -Abstract, The 9^th Spine Frontier Meeting, Hokkaido, Japan, August 2002.

58. “Surgical Management of Spondylogenic Thoracic Pain Syndrome,” Leonel Hunt, Ken Hsu, James Zucherman, -Abstract, Western Orthopaedic Association Annual Meeting, August 2002.

59. “Treatment of Lumbar Spinal Stenosis With an Interspinous Spacer,” James Zucherman, Ken Hsu, Charles Hartjen, Thomas Mehalic, Dante Implicito, Michael Martin. North American Spine Society – Abstracts, October 2002.

60. “The X-Stop, Interspinous Process Distraction for Treatment of Lumbar Spinal Stenosis,” Ken Hsu, James Zucherman, Spine and Spinal Cord, Japan, January 2003.

61. “The Effect of an Interspinous Implant on Intervertebral Disc Pressures,” Kyle Swanson, D.P. Lindsey, Ken Hsu, James Zucherman, Scott Yerby. Spine, Vol. 28,
    No. 1, p26-32, 2003.

62. “The X-Stop Interspinous Implant Improves Physical Function in Lumbar Stenosis Patients,” Ken Hsu, James Zucherman, Charles Hartsen, Thomas Mehalic, et al., Abstract, International Society for the Study of the Lumbar Spine, May 2003.

63. “The Quality of Life of Lumbar Stenosis Patients Treated with the X-Stop Interspinous Spacer,” James Zucherman, Ken Hsu, Charles Hartten, et al. The Spine Journal/Proceedings of the North American Spine Society 18th Annual Meeting. September/October 2003.

64. “The Effect of an Interspinous Implant on the Kinematics of the Instrumented and Adjacent Levels in the Lumbar Spine,” Derek Lindsey, Kyle Swanson, Paul Fuchs, Ken Hsu, James Zucherman, Scott Yerby. Spine, Vol. 28, No. 19, p2192-2197, 2003.

65. “A Prospective Randomized Multi-Center Study for the Treatment of Lumbar Spinal Stenosis with the X-Stop Interspinous Implant: 1-Year Results,” J.F. Zucherman, Ken Hsu, C.A. Hartjen, T.F. Mehalic, D.A. Implicito, M.J. Martin, D.R. Johnson II, G.A. Skidmore, P.P. Vessa, J.W. Dwyer, S. Puccio, J.C. Cauthen, R.M. Ozuna, European Spine Journal, Vol. 13, No. 1, p22-31, 2004.

66. “The Use of an Interspinous Implant in Conjunction with a Graded Facetectomy Procedure,” Paul F. Fuchs, Derek P. Lindsey, Ken Hsu, James F. Zucherman, Scott A. Yerby, Spine, Vol. 30, No. 11, p1266-1272, 2005.

67. “A Multicenter, Prospective, Randomized Trial Evaluating the X-Stop Interspinous Process Decompression System for the Treatment of Neurogenic Intermittent Claudication: Two-Year Follow-up Results,” J.F. Zucherman, Ken Hsu, C.A. Hartjen, T.F. Mehalic, D.A. Implicito, M.J. Martin, D.R. Johnson II, G.A. Skidmore, P.P. Vessa, J.W. Dwyer, S. Puccio, J.C. Cauthen, R.M. Ozuna, Spine, Vol. 30, No, 12, p1351-1358, 2005.

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