Douglas Orndorff, MD

ADDITIONAL CERTIFICATION(S)  & TRAINING:

• Medtronic Prestige Disc Replacement
• Globus Facet, Facet Replacement Device
• XSTOP, Interspinous Process Device
• Superion, Interspinous Process Device
• XLIF Surgeon Training

SURGICAL IMPLANTS: 

1. Co-Design Surgeon: NuVasive, TLIF. Expandable Cage. Release, January 2024.
2. Co-Design Surgeon: Stryker, Monterey. Anterior Lumbar Interbody Cage. Release, late 2022.
3. Co-Design Surgeon: SeaSpine, WaveForm. Interbody Cage. Release, 2020.
4. Co-Design Surgeon: SeaSpine, Mariner. Lumbar Pedicle Screw. Release, 2017.
5. Co-Design Surgeon: SeaSpine, Laminoplasty. Release, 2013.

 PROFESSIONAL ASSOCIATIONS:

1999-present                   American Medical Association

1999-present                   University of Colorado School of Medicine Surgical Society

2002-present                   Alpha Omega Alpha

1999-present                   Colorado Medical Society

2003-present                   Virginia Medical Society

2003-present                   American Academy of Orthopaedic Surgeons

2003-present                   Virginia Orthopaedic Society

2008-present                   North American Spine Society

2008-present                   AO-Spine North America

2009-present                   Western Orthopaedic Society

2014-present                   Cervical Spine Research Society

2016-present                   Lumbar Spine Research Society

FOUNDER: 

University of Colorado Surgical Society

PUBLICATIONS, WORK IN PROGRESS:

1. Orndorff DG, Youssef JA, Ziemke M, Patty CA, Antoine S, Novak HL, Anderson PA. (In preparation). Meta-analysis comparing clinical outcomes of single-level cervical total disc replacement versus anterior cervical discectomy and fusion. The Journal of Bone and Joint Surgery.
2. Orndorff DG, Youssef, JA, Vaccaro A, Anderson PA. (In Preparation). Classification and Treatment of Thoracolumbar Fractures-Using Spine Connect Forum.

PUBLICATIONS, PEER REVIEWED:

1. Mundis, GM, Olsson, EC, Hart, RA, Williams, SK, Martyn, R, Orndorff, DG, Berg, AL, Russell, NA, Vizesi, F. (2023) Preliminary Experience with a Novel Facet Based Lateral Mass Drill Guide for the Placement of Lateral Mass Screws Compared to Freehand Technique: a Cadaveric Study. Spine J. 2023 June; 23(6):912:920.
2. Douglas, DG, Martyn, RM. (2021) Accuracy of Facet Screw Placed by Surgeon and Residents. Vail Spine Summit.
   
3. Nunlry PD, Patel VV, Orndorff DG, Lavelle WF, Block JE, Geisler FH, (2017) Superion InterSpinous Spacer Treatment of Moderate Spinal Stenosis: 4-year Results. World Neurosurgery.
   
4. Youssef JA, Orndorff DG, Scott MA, Ebner RE, Knewitz, AP. Sterile Seroma Resulting from Multilevel XLIF Procedure as Possible Adverse Effect of Prophylactic Vancomycin Powder: A Case Report. Evidence-Based Spine-Care Journal.
   
5. Youssef JA, Orndorff DG, Patty CA, Scott MA, Price HL, Hamlin LF, Williams TL, Uribe JS, Deviren V. (2013) Current Status of Adult Deformity. Global Spine Journal; 3:51-62.
6. Arlet, V. Orndorff, DG, Jagnanthan, J, Dumont A. Reverse and Pseudoreverse Cortical Sign in Thoracolumbar Burst Fracture:  Radiographic Description and Distinction-a propos of Three Cases.  Eur Spine J. 2009; 18(2):282-287.
7. Orndorff, DG, Shen FH. Small-Caliber Gunshot Wound with Fragment Lodged in Thoracic Foramen in a Patient with Partial Brown-Sequard Syndrome. Am J Orthop. 2008 Mar; 37(3):E55-8.
8. Behnke NA, Cui QJ, Orndorff DG.  Late Presentation of a Mycotic Popliteal Artery Pseudoaneurysm in the Setting of a Revised Total Knee Arthroplasty Complicated by Both Prior Infection and Periprosthetic Fracture: A Case Report. Ann Vasc Surg. 2007 Jul-Aug; 21(4):519-24. Epub 2007 May 29.
9. Orndorff, DG, Hart, J, Miller MD, Physical Examination of the Knee.  Annals of Sport Medicine.  Curr Sports Med Rep 2005; Oct 4(5):243-248.
10. Gross, SA, Orndorff DG, Romness MJ, Poelstra KA.  Salter Harris I Femur Fracture in 11-month Old Infant:  A Case Report and Review of the Literature. Pediatr Emerg Care. 2006 May;22(5):364-6.
11. Orndorff DG, Samarizis D, Whitehill RW, Shen FH. Traumatic Fracture-Dislocation of C5 on C6 through a Previously Solid Multi-Level Anterior Cervical Discectomy and Fusion: A Case Report and Review of the Literature. The Spine Journal 2006;6:  55-60.
12. Orndorff DG, Jon E Block, Pierce Dalton Nunley, Nick Shamie, M.D., Scott L. Blumenthal, and Fred H. Geisler “Interspinous Process Decompression: Expanding Treatment Options for Lumbar Spinal Stenosis” by “The State of the Art in Minimally Invasive Spine Surgery” BioMed Research International Research Article 3267307.

PUBLICATIONS, NON-PEER REVIEWED:

1. Orndorff, DG, Degenerative Disc Disease 101 for Spine Surgery. Journal of the Spinal Research Foundation. 2016; 11(1):6
2. Orndorff DG, Youssef JA, Scott MA, Paillard FC, Roberts CC. Minimally Invasive Approaches for Spine Surgery. Journal of the Spinal Research Foundation. 2013; 8(1):49-55
3. Orndorff DG, Scott MA, Patty CA. Force Transfer in the Spine. Journal of the Spinal Research Foundation. 2012; 7(2):30-35.
4. Orndorff, DG, Youssef, JA & Myhre, S.  How to Know When Fusion is the Best Option for You.  Journal of the Spinal Research Foundation.  2015.  10(2): 39-45.

BOOK CHAPTERS:

1.  Youssef JA, Orndorff DG, Scott MA, Ebner RE, Mullikin ER. Minimally Invasive Surgery Treatment of Adjacent Level Breakdown: Hybrid Techniques. In Haid, et al, eds. Global Spinal Alignment and Balance. St. Louis, MO: Quality Medical Publishing, INC.
2. Youssef JA, Orndorff DG, Price HL, Patty CA, Scott MA. Mini-Open ALIF. In Phillips, et al, eds. Minimally Invasive Spinal Surgery: Surgical Techniques and Disease Management. New York, NY: Springer Science + Business Media, LLC.
3. Orndorff DG, Youssef JA, Finn MA, Patty CA, DeBauche ST, Scott MA. Transmaxillary Approach to the Clivus and Upper Cervical Spine. In Vaccaro, et al, eds. Surgical Atlas of Spinal Operations. Maryland Heights, MO: Jaypee Brothers Medical Publishers.
4. Youssef JA, Patty KA, Orndorff DG. (2013). Adult Isthmic Spondylolisthesis. In: Anderson, DG & Vaccaro AR, eds. Decision Making in Spinal Care (2^nd ed.); New York, NY: Thieme.
5. Orndorff DG. (2007). Sacral Fractures. Decision Making in Spinal Care. In: Anderson, DG & Vaccaro AR, eds. Decision Making in Spinal Care; New York, NY: Thieme.
6. Orndorff DG, Poelstra KA, Albert TJ. (In Preparation). “ProDisc-C” Motion Preservation. In Yue, et al, eds. Surgery of the Spine: Advanced Techniques and Controversies.
7. Orndorff DG, Zdeblick, TA. (In Preparation). Thoracic and Lumbar Spinal Instrumentation. In Herkowitz, et al, eds. The Spine.
8. Orndorff DG, Whang PG, Albert TJ. (In Preparation). Motion Sparing Technology in Cervical Spine Surgery. In Todd and Lee.Cervical Spine Surgery: Diagnosis and Management.
9. Orndorff DG, Anderson, PA. (In Preparation).  Biomechanics of Cervical Disc Arthroplasty. In Mummaneni, et al, eds. Cervical Spine Surgery: Current Trends and Challenges.
10. Orndorff, DG & Pannunzio ME. The Role of BMPs in the Treatment of Scaphoid Nonunions. Green’s Operative Hand Surgery Online Updates, (November 2005)  Pannunzio ME, Chhabra AB, eds., Publisher:  Elsevier, Philadelphia, PA.
11. Youssef, J., Orndorff, DG., Myhre, S., Ebner, R. & Barney, E. 2015. Anterior Lumbar Interbody Fusion.  Decision Making in Degenerative Spinal Surgery: A Case Based Approach.  Nova.  New York, NY.  P 233 – 242.
12. Youssef, J., Orndorff, DG, & Myhre, S. (submitted).  Literature Evidence of the MIS Lateral Approach.  Textbook of Minimally Invasive Lateral Spine Surgery.  Springer.  New York, NY.

EDUCATIONAL ACTIVITIES & PROCTORSHIPS:

1. Presenter: Community Education: Cervical Neck Pain Diagnosis and Treatment Options. May, 2023.
2. Presenter: Sacroiliac Joint Pathology and Treatments webinar. April 2023.
3. Presenter: Lumbar Pathologies, Diagnosis and Treatment Webinar. January 2023.
4. Moderator: Lumbar Spine Research Society. Spinal Deformity-Sagittal Balance Section. 2022
5. Presenter: Community Education: Cervical Pain and Treatment. May, 2022.
6. Presenter: Provider Education: Cervical/Lumbar Anatomy Clinical Work-Up Treatment. April, 2022.
7. Presenter: Community Education: SI Joint Pain and Treatment. December, 2021.
8. Presenter: Community Education: Low back pain and Treatment. August, 2021
9. Moderator: Cervical Research Society. Cervical Trauma and Complications Section. 2021.
10. Moderator: Lumbar Spine Society. Complications from Lateral Lumbar Surgery. 2019.
11. Moderator: Cervical Spine Research Society. Cervical Sagittal Balance Section. 2018.
12. Moderator: Lumbar Spine Research Society. Navigation and Robotics Section. 2017.
13. Presenter: Return to Play Criteria: The Spine Physician’s Perspective. 1^st Annual Rocky Mountain Sports Medicine Symposium. Durango, CO. August 2013
14. Student Advisor: Animas High School L.I.N.K. Program. March 2013.
15. Student Advisor: Animas High School L.I.N.K Program. March 2012.
16. Presenter: Injury Prevention for the Weekend Warrior Cyclist. Community Presentation. Durango, CO. February 2012.
17. Faculty: Eighth Annual Emerging Technologies Spine Education Summit.  Steamboat Springs, CO. February 2012.
18. Presenter: Recognition and Management of Spinal Trauma in the Field. Community Presentation. Durango, CO. October 2011.
19. Faculty:  Osteobiologics Collaborative. Santa Monica, CA. October 2011.
20. Presenter: Did It Hurt To Pick Up The Paper Today? Back Pain Explained. Community Presentation. Durango, CO. September 2011.
21. Faculty: Seventh Annual Emerging Technologies Spine Education Summit. Steamboat Springs, CO. February 2011.
22. Faculty: Sixth Annual Emerging Technologies Spine Education Summit. Steamboat Springs, CO.  January 2010.
23. Faculty: Fifth Annual Emerging Technologies Spine Education Summit. Steamboat Springs, CO.  February 2009.
24. Student Advisor – Pre-Medical Students, 2009-present.
25. Presenter: Preparing for the Boards. University of Colorado School of Medicine. Denver, CO. 2002.
26. Presenter: Transition to Third Year. University of Colorado School of Medicine. Denver, CO. 2002.
27. Presenter: Preparing for Residency in Orthopaedic Surgery. University of Colorado School of Medicine. Denver, CO. 2002.

PUBLIC MEDIA

1. Print interview: Mercy Regional Medical Center eliminates X-rays in spine surgeries. The Durango Herald, May 2021.
2. Print interview: Mercy to host back pain presentation in Farmington. July 2019.
3. Print interview: Mercy to offer community presentation on neck and back pain. Sept. 2018.
4. Print interview: Building a Better Spine. The Durango Herald, December 2013.
5. Recognized: 18 Spine Practices & Surgeons With Research Foundations. Becker’s Spine Review, August 2012.
6. Print interview: Medical interns get a leg up. The Durango Herald, September 2011.
7. Print interview: Limber lumbar. The Durango Herald, September 2010.
8. Recognized: Bringing Innovation Home. Mercy Regional Medical Center Newsletter, Fall 2010.

PRESENTATIONS & LECTURES:

1. Presentation – (submitted) 12 month analysis of fusion and subsidence rates between patients who acquired either Osteocel® or Infuse® rhBMP2.  JA Youssef, DG Orndorff, S Myhre, T Faye, C Pope & M Glade.  NASS.  Boston, MA.  October, 2016.
2. Presentation – Comparative analysis of fusion rates and subsidence in patients who received either Osteocel® or Infuse® rhBMP2 one year after undergoing XLIF®.  JA Youssef, DG Orndorff, S Myhre, T Faye, C Pope & M Glade.  SOLAS.  Carlsbad, CA.  March, 2016.
3. Presentation – XLIF Intraoperative Retraction Times and Postoperative Complications. Youssef JA, Orndorff, DG, Myhre SL. Society of Lateral Access Surgery. San Diego, CA. April 2015.
4. Presentation – Extended Clinical Experience with Facet Arthroplasty: Two and Five Year Preliminary Outcomes from the ACADIA™ IDE Study. Youssef JA, Orndorff, DG, Tahernia AD, Webb S, Regan J, Anand N, Hartjen C, Mckee D, Baker K. International Society for the Advancement of Spine Surgery. San Diego, CA. April 2015.
5. Presentation –.Clinical Experience with Facet Arthroplasty: 2 and 5 Year Preliminary Outcomes from the Acadia^® IDE study.  JA Youssef, Orndorff, DG SL Myhre & RE Ebner.  LSRS.  Chicago, IL.  April, 2015.
6. Presentation – Early Change in Nerve Function and Patient-Reported Outcomes: Preliminary Results after the XLIF Procedure. Youssef, JA, Orndorff, DG, Scott, MA, Ebner, RE. Society of Lateral Access Surgery. Miami Beach, FL. April 2014.
7. Presentation – Extreme Lateral Interbody Fusion as a Treatment for Degenerative Scoliosis at 2 Year Follow-up. Youssef JA, Orndorff DG, Scott MA, Ebner RE. Society of Lateral Access Surgery. Miami Beach, FL. April 2014.
8. Presentation – Postoperative Leg Pain and/or Dysesthesia at One Year Follow-up Following Extreme Lateral Interbody Fusion at a Single Site. Youssef JA, Orndorff DG, Scott MA, Antoine S, Knewitz AP. Society of Lateral Access Surgery. Miami Beach, FL. April 2014.
9. Presentation – Retraction Time per Level in Relation to Postoperative Leg Pain Following Extreme Lateral Interbody Fusion. Youssef JA, Orndorff DG, Scott MA, Ebner RE. International Society for the Advancement of Spine Surgery. Miami Beach, FL. April 2014.
10. Presentation – Postoperative Leg Pain and/or Dysesthesia at One Year Follow-up Following Extreme Lateral Interbody Fusion at a Single Site. Youssef JA, Orndorff DG, Scott MA, Antoine S, Knewitz AP. International Society for the Advancement of Spine Surgery. Miami Beach, FL. April 2014.
11. Poster Presentation – Retraction Time per Level in Relation to Postoperative Leg Pain Following Extreme Lateral Interbody Fusion. Youssef JA, Orndorff DG, Scott MA, Ebner RE. North American Spine Society’s 10^th Annual Evidence and Technology Spine Summit. February 2014.
12. Poster Presentation – Postoperative Leg Pain and/or Dysesthesia at One Year Follow-up Following Extreme Lateral Interbody Fusion at a Single Site. Youssef JA, Orndorff DG, Scott MA, Antoine S, Knewitz, AP. North American Spine Society’s 10^th Annual Evidence and Technology Spine Summit. February 2014.
13. Presentation – Retraction Time per Level in Relation to Postoperative Leg Pain Following Extreme Lateral Interbody Fusion. Youssef JA, Orndorff DG, Scott MA, Ebner RE. Society of Minimally Invasive Spine Surgery Annual Meeting. Las Vegas, NV. November 2013.
14. Poster Presentation – Postoperative Leg Pain and/or Dysesthesia at One Year Follow-up Following Extreme Lateral Interbody Fusion at a Single Site. Youssef JA, Orndorff DG, Scott MA, Antione S, Knewitz AP. Society of Minimally Invasive Spine Surgery Annual Meeting. Las Vegas, NV. November 2013.
15. Podium Presentation – The Safety and Efficacy of a Novel Minimally Invasive Interspinous Spacer for the Treatment of Moderate Lumbar Stenosis: 18 Month Outcomes of a Prospective, Randomized, Controlled FDA IDE Clinical Trial. Whang PG, Orndorff DG, Miller LE, Block JE. Lumbar Spine Research Society. Chicago IL. 2013
16. Presentation – Findings from a Single Site investigating the Use of eXtreme Lateral Interbody Fusion as a Treatment for Degenerative Lumbar deformity at Two Year Follow-up. Youssef JA, Orndorff DG, Roberts CC, Patty CA, Scott MA. Price HL. Society of Lateral Access Surgery 6^th Annual Research Meeting. San Diego, CA. May 2013.
17. Poster Presentation – Decreased Bacterial Biofilm Formation and Function Associated with Silicon Nitride (Si₃N₄) Materials Used in Interbody Fusion Cages (IBF) Compared to Titanium and Polyetheretherketone (PEEK). Orndorff DG, Youssef JA, Gorth D, Puckett S, Ercan B, Webster T.J., Patel A.A, Lakshminarayanan R. International Society for the Advancement of Spine Surgery. Vancouver BC. April 2013.
18. Poster Presentation – Reported complications associated with the off-label use of recombinant human bone morphogenetic protein-2 in anterior lumbar interbody fusion with minimum one year follow-up. Youssef JA, Orndorff DG, Patty CA, Price H, Scott MA. Society for Minimally Invasive Spine Surgery. Miami, FL. September 2012.
19. Poster Presentation – The Use of Autologous Platelet Poor Plasma as a Barrier to Prevent Ectopic Bone Formation Following Lumbar Fusion with BMP. Youssef JA, Orndorff DG, Patty CA, Scott MA, Norton D. Society for Minimally Invasive Spine Surgery. Miami, FL. September 2012.
20. Poster Presentation – Postoperative Leg Pain and/or Dysesthesia at One Year Follow-up Following Extreme Lateral Interbody Fusion at a Single Site. Youssef JA, Orndorff DG, Scott MA, Patty CA, Roberts, C. Society for Minimally Invasive Spine Surgery. Miami, FL. September 2012.
21. Clinical Outcomes and Complications at One Year Follow-up Following Extreme Lateral Interbody Fusion at a Single Site. Youssef JA, Orndorff DG, Scott MA, Patty CA. Society for Minimally Invasive Spine Surgery. Miami, FL. September 2012.
22. Poster Presentation – Reported complications associated with the off-label use of recombinant human bone morphogenetic protein-2 in anterior lumbar interbody fusion with minimum one year follow-up. Youssef JA, Orndorff DG, Patty CA, Price H, Scott MA. The 19^thInternational Society for the Advancement of Spine Surgery. Istanbul, Turkey. July 2012.
23. Poster Presentation –Radiographic Findings from a Single Site Investigating the Use of Extreme Lateral Interbody Fusion as a Treatment for Adjacent Segment Disease at One Year Follow-up. Youssef JA, Orndorff DG, Patty CA, Scott MA. The 19^th International Society for the Advancement of Spine Surgery. Istanbul, Turkey. July 2012.
24. Poster Presentation – Radiographic Findings from a Single Site Investigating the Use of Extreme Lateral Interbody Fusion as a Treatment for Degenerative Lumbar Deformity at One Year Follow-up. Youssef JA, Orndorff DG, Patty CA, Scott MA. The 19^th International Society for the Advancement of Spine Surgery. Istanbul, Turkey. July 2012.
25. Poster Presentation – The Use of Autologous Platelet Poor Plasma as a Barrier to Prevent Ectopic Bone Formation Following Lumbar Fusion with BMP. Youssef JA, Orndorff DG, Patty CA, Scott MA, Norton D. The 19^th International Society for the Advancement of Spine Surgery. Istanbul, Turkey. July 2012.
26. Presentation – Radiographic Findings from a Single Site Investigating the Use of Extreme Lateral Interbody Fusion as a Treatment for Adjacent Segment Disease at One Year Follow-up. Youssef JA, Orndorff DG, Patty CA, Scott MA. Society of Lateral Access Surgery 5^thAnnual Research Meeting. San Diego, CA. May 2012.
27. Presentation – Radiographic Findings from a Single Site Investigating the Use of Extreme Lateral Interbody Fusion as a Treatment for Degenerative Lumbar Deformity at One Year Follow-up. Youssef JA, Orndorff DG, Patty CA, Scott MA. Society of Lateral Access Surgery 5^th Annual Research Meeting. San Diego, CA. May 2012.
28. Poster Presentation – Radiographic Findings from a Single Site Investigating the Use of Extreme Lateral Interbody Fusion as a Treatment for Adjacent Segment Disease at One Year Follow-up. Youssef JA, Orndorff DG, Patty CA, Scott MA. The Spine Society of Australia 23^rd Annual Scientific Meeting. Sydney, Australia. April 2012.
29. Poster Presentation – Radiographic Findings from a Single Site Investigating the Use of Extreme Lateral Interbody Fusion as a Treatment for Degenerative Lumbar Deformity at One Year Follow-up. Youssef JA, Orndorff DG, Patty CA, Scott MA. The Spine Society of Australia 23^rd Annual Scientific Meeting. Sydney, Australia. April 2012.
30. Poster Presentation – A Single-Surgeon Study of Selective Osteoprogenitor Cell Retention for Enhancement of Lumbar Spinal Fusion: A Minimum 2-Year Follow-up. Youssef, JA, Orndorff DG, Emmanuel-Ogier MM, Gottlieb CE, Patty CA. Evidence and Technology Spine Summit. Park City, UT. February 2011.
31. Poster Presentation – The Use of Autologous Platelet Poor Plasma as a Barrier to Prevent Ectopic Bone Formation Following Lumbar Fusion with BMP. Youssef JA, Orndorff DG, Patty CA, Crabtree KE, Gottlieb CE, Norton D. Evidence and Technology Spine Summit. Park City, UT. February 2011.
32. Poster Presentation – Meta-analysis Comparing Clinical Outcomes of Cervical Total Disc Replacement versus Anterior Cervical Discectomy and Fusion. Orndorff DG, Youssef JA, Ziemke M, Patty CA, Novak HL, Anderson PA. Evidence and Technology Spine Summit. Park City, UT. February 2011.
33. Presentation – Meta-analysis Comparing Clinical Outcomes of Cervical Total Disc Replacement versus Anterior Cervical Discectomy and Fusion. Orndorff DG, Youssef JA, Ziemke M, Patty CA, Novak HL, Anderson PA. Cervical Spine Research Society 38th Annual Meeting, Charlotte, NC. December 2010.
34. Lecture – “Management of Spinal Injuries in the Multi-Injured Patients” Mercy Regional Health Annual Trauma Symposium. Durango, Colorado. October 22, 2010.
35.  Lecture – “Life After Fellowship” Stryker Resident/Fellow Meeting. Boulder, Colorado. October 2, 2010.
36. Lecture – “Management of Cervical Radiculopathy and Myelopathy” Spine Colorado Spring Meeting. Durango, Colorado. May 2010.
37. Lecture – “Posterior Management of Cervical Myelopathy” Spine Colorado Spring Meeting. Durango, Colorado. May 2010.
38. Presentation – Meta-Analysis Comparing Clinical Outcomes of Cervical Total Disc Replacement vs Anterior Cervical Discectomy and Fusion. Orndorff DG, Youssef JA, Ziemke MK, Patty CA, Anderson PA. Cervical Research Society Annual meeting-Charlotte, NC 2010.
39. Presentation – Rate of Adjacent Segment Degeneration in Stand-Alone Anterior Lumbar Interbody Fusions. Orndorff DG, Tribus C, Blomberg JB, Zellner B, Cornett CC, Zdeblick TA.  Lumbar Spine Society Annual Meeting-Chicago, IL 2010.
40. Presentation – Meta-Analysis Comparing Clinical Outcomes of Cervical Total Disc Replacement vs Anterior Cervical Discectomy and Fusion. Orndorff DG, Youssef JA, Ziemke MK, Patty CA, Anderson PA. Cervical Research Society Annual meeting-Charlotte, NC 2010.
41. Presentation – Rate of Adjacent Segment Degeneration in Stand-Alone Anterior Lumbar Interbody Fusions. Orndorff DG, Tribus C, Blomberg JB, Zellner B, Cornett CC, Zdeblick TA.  Lumbar Spine Society Annual Meeting-Chicago, IL 2010
42. Presentation – Management of Cervical Radiculopathy and Myelopathy. Orndorff DG.  Western Orthopaedic Association Fall Conference. Telluride, Colorado October 2009.
43. Lecture – “Management of Cervical Spine Injuries in Athletes” Rock Mountain Sports Society Meeting. Durango, CO. September 2009.
44. Lecture – “Evaluation, Management, Review of Spinal Trauma” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin.  July 2009.
45. Lecture – “Ankylosing Spondylitis and DISH-Evaluation and Management” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin.  May 2009.
46. Lecture – “Cervical Spine Fractures-Classification and Management” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin.  April 2009.
47. Lecture – “Surgical Planning in Spine Surgery” Grand Rounds University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin.  March 2009.
48. Lecture – “Tumors and Metastatic Disease of the Spine” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin.  March 2009.
49. Presentation – Radiographic Significance of the Reverse-Pseudo Cortical Sign in Thoracolumbar Burst Fractures.  Orndorff, DG,Jagnathan, J, Dumont A, Arlet, V.  American Academy of Orthopaedic Surgery Annual Meeting. Las Vegas-2009.
50. Lecture – “Spine Infections-Presentation and Management”. University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin.  February 2009.
51. Presentation – Cervical Radiculopathy and Cervical Myelopathy. Orndorff, DG. Emerging Technology in Spine Surgery. Steamboat Springs, Colorado. February 2009.
52. Lecture – “Spinal Orthoses”. University of Wisconsin Department of Orthopaedic Surgery.  Madison, Wisconsin.  February 2009.
53. Lecture – “Cervical Radiculopathy and Cervical Myelopathy” Emerging Technology in Spine Surgery. Steamboat Springs, Colorado. February 2009.
54. Lecture – “Spine Complications”.  University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin. January 2009.
55. Lecture – “Why Do Anything But Orthopaedic Surgery?”  Grand Rounds-University of Colorado Surgical Society. Denver, Colorado. December 2008.
56. Presentation – Spine Anatomy. Orndorff DG: Symposium-Non-Physician Practitioners. NASS-Annual meeting-Toronto 2008.
57. Lecture – “Classification and Clinical Application of the Thoracolumbar Classification System” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin. October 2008.
58. Lecture – “Metastatic Spine Tumors” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin. September 2008.
59. Lecture – “Assessing Spinal Cord Injury and Management” University of Wisconsin Department of Orthopaedic Surgery. Madison, Wisconsin. August 2008
60. Lecture – “Pediatric Knee Intra-Articular Knee Injuries” University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. October 1, 2007
61. Lecture – “Necrotizing Fascititis and Myonecrosis” University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. September 11, 2007
62. Presentation – Spine Anatomy. Orndorff DG: Symposium-Non-Physician Practitioners. NASS-Annual meeting-Austin 2007.
63. Lecture – “Spinal Infections” University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. June 12, 2007.
64. Lecture – “Fractures of the Base of the Thumb and Ulnar Collateral Ligament Injuries of the Thumb”    University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. May 13, 2007.
65. Lecture – “Proximal Humerus Fractures” University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. January 15, 2007.
66. Presentation – Admission of Hematocrit on Inpatient Rehabilitation in the Total Knee Arthroplasty patient. Orndorff DG, Vincent HK, Saleh KJ:. AAOS-Annual meeting-San Diego 2007.
67. Presentation – Analysis of Factors in Achieving Desired Length of Stay for Total Joint Arthroplasty Patients. Orndorff DG, Mullhall KJ, Brown TE, Saleh KJ. AAOS-Annual meeting-Chicago 2006.
68. Lecture – “Tibial Pilon Fracture”. Roanoke Memorial Hospital-Department of Orthopaedic Surgery Conference.  Roanoke, Virginia.  October 15, 2006.
69. Lecture – “Hip Dislocations and Femoral Head Fractures”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. August 21, 2006.
70. Lecture – “Basic Science-Bone Physiology”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. August 5, 2006.
71. Lecture – “Fractures of the Base of the Thumb and Ulnar Collateral Ligament Injuries of the Thumb”.   University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. May 15, 2006.
72. Lecture – “Anatomy of the Ankle and Foot-Cadaver Lab and Dissection”. University of Virginia-Department of Orthopaedic Surgery.  University of Virginia School of Medicine, Charlottesville, Virginia.  April 22, 2006.
73. Lecture – “Analysis of Factors in Achieving Desired Length of Stay for Total Joint Arthroplasty Patients”.  AAOS-Annual meeting. Chicago, IL.  March 22, 2006.
74. Lecture – “Proximal Humerus Fractures”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. January 16, 2006.
75. Lecture – “Biomaterials”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia.  January 13, 2005.
76. Lecture – “Pediatric Tibial Fractures”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia.  December 5, 2004.
77. Lecture – “Biomechanics of Spinal Movement”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. October 20, 2005.
78. Lecture – “Basic Science of Skeletal Muscle”. University of Virginia Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia.  September 9, 2005.
79. Lecture – “Femoral Head Fractures and Hip Dislocations”. University of Virginia Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia.  August 30, 2005.
80. Lecture – “Posterior instrumentation of Thoracolumbar Fractures”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. April 5, 2005.
81. Lecture – “Biomechanics of Spinal Movement”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. October 24, 2004.
82. Lecture – “Pediatric Femur Fractures”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. September 13, 2004.
83. Lecture – “Biomaterials”. University of Virginia-Department of Orthopaedic Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. November 21, 2003.
84. Lecture – “Heparin-Induced Thrombocytopenia, a review”. University of Virginia-Vascular Surgery Conference.  University of Virginia School of Medicine, Charlottesville, Virginia. September 29, 2003
85. Presentation – “Proteins and Synaptic Transmission in the Rat”.  International Taste and Smell Conference, Sienna, Italy, 1997.
86. Presentation – “Proteins and Synaptic Transmission in the Rat”.  The Rocky Mountain Taste and Smell Conference, University of Colorado School of Medicine, Denver, Colorado, 1998.

RESEARCH HISTORY:

2022-ongoing  — Co-Investigator-Randomized study of One-level TLIF cage using Bone Morphogenic Protein(BMP)-Medtronic

2021-ongoing  — Co-Investigator-Randomized study of Two-level lumbar fusion with Bone Morphogenic Protien(BMP)-Medtronic

2019-ongoing  —  Co-Investigator- Randomized study of ACDF vs ACDF and DTRAX for Posterior Cervical Fusion.

2018-ongoing  —  Co-Investigator- Efficacy of Bone Morphogenetic Protein in Posterior Lateral Fusion.

2016 – 2018  —  Ultrasonographic properties of peripheral nerves and surrounding tissues (blood vessels, bone, ligaments, fat, muscle, skin) through a lateral transpsoas surgical approach.

2014 – 2016  — Evaluation of Transcutaneous Stimulation of Lumbosacral Nerve Roots: A Pilot Study.  Study Sponsor: Nuvasive

2014-2017  —  Co-Investigator – Clinical Evaluation of ACADIA™ Facet Replacement System for the Treatment of Spinal Stenosis. Globus Medical.

2012-2013  —  Co-Investigator – Efficacy and safety of Integra Accell Evo3™ Demineralized bone matrix in Instrumented Lumbar Spine Fusion: Comparison to RH-BMP-2.

2012-2013  —  Co-Investigator – Multimodality Neuromonitoring in Extreme Lateral Interbody Fusion (XLIF).

2010-2019  —  Co-Investigator – SOLAS^® Spinal Surgery Registry:  Prospective Clinical and Radiographic Outcomes Data Collection in Degenerative, Deformity and Trauma Patients.

2010-2013  —  Principal Investigator – A Prospective, Multi-center, Randomized Study Comparing the Vertiflex® Superion™ Interspinous Spacer (ISS) to the X-STOP® Interspinous Process Decompression (IPD®) System in Patients with Moderate Lumbar Spinal Stenosis.

2008-2009  —  Prospective Study: Prestige Cervical Disc Replacement (Medtronic) vs. Anterior Cervical Discectomy and Fusion(ACDF)

2008-2009  —  IDE Trial: PEEK Rod vs Titanium Rods in Lumbar Spinal Fusion

2008-2010  —  IDE Trial: Annular Repair outcomes status post-Microdiscectomy. Incidence or recurrence.