Gerard Carandang, MS

Gerard Carandang

Contact Information

 

Edward Hines Jr. VA Hospital

5000 S. Fifth Avenue

P.O. Box 5000 (151)

Hines, IL 60141

 

Phone: 708-218-1586

Fax: 708-202-7938

E-mail: Gerard.Carandang@va.gov

 

Education

 

Research and Professional Activities

 

HONORS/AWARDS:

 

Selected Publications

 

PEER-REVIEWED JOURNAL ARTICLES:

  1. Voronov LI, Siemionow KB, Havey RM, Carandang G, Patwardhan AG. Biomechanical evaluation of DTRAX(®) posterior cervical cage stabilization with and without lateral mass fixation. Med Devices (Auckl). 2016 Aug 23;9:285-90.

  2. Voronov LI, Siemionow KB, Havey RM, Carandang G, Phillips FM, Patwardhan AG. Bilateral posterior cervical cages provide biomechanical stability: assessment of stand-alone and supplemental fixation for anterior cervical discectomy and fusion. Med Devices (Auckl). 2016 Jul 13;9:223-30.

  3. Patwardhan AG, Carandang G, Voronov LI, Havey RM, Paul GA, Lauryssen C, Coric D, Dimmig T, Musante D. Are Collapsed Cervical Discs Amenable to Total Disc Arthroplasty?: Analysis of Prospective Clinical Data with 2-year Follow-up. Spine (Phila PA 1976). 2016 Jul 18 [Epub ahead of print]

  4. Patwardhan AG, Khayatzadeh S, Nguyen NL, Havey RM, Voronov LI, Muriuki MG, Carandang G, Smith ZA, Sears W, Lomasney LM, Ghanayem AJ. Is Cervical Sagittal Imbalance a Risk Factor for Adjacent Segment Pathomechanics After Multilevel Fusion? Spine (Phila Pa 1976). 2015 Nov 30.

  5. Patwardhan AG, Havey RM, Khayatzadeh S, Muriuki MG, Voronov LI, Carandang G, Nguyen NL, Ghanayem AJ, Schuit D, Patel AA, Smith ZA, Sears W. Postural Consequences of Cervical Sagittal Imbalance - A Novel Laboratory Model. Spine (Phila Pa 1976). 2015 Jun 1:40(11); 783-92.

  6. Baluch DA, Patel AA, Lullo B, Havey RM, Voronov LI, Nguyen NL, Carandang G, Ghanayem AJ, Patwardhan AG. Effect of Physiologic Loads on Cortical and Traditional Pedicle Screw Fixation. Spine (Phila Pa 1976). 2014 Aug 4. 39(22):E1297-E1302.

  7. Brody M, Patel A, Ghanayem A, Carandang G, Havey R, Voronov L, MD, Vastardis G, Potluri T, Patwardhan A. The Effect of Posterior Decompressive Procedures on Segmental Range of Motion Following Cervical Total Disc Arthroplasty. Spine (Phila Pa 1976). 2014 Sep 1;39(19):1558-63.

  8. Schiff A, Havey R, Carandang G, Wickman A, Angelico J, Patwardhan A, Pinzur M. Quantification of Shear Stresses Within a Transtibial Prosthetic Socket. Foot Ankle Int. 2014 May 21;35(8):779-782.

  9. Balaram AK, Ghanayem AJ, O'Leary PT, Voronov LI, Havey RM, Carandang G, Abjornson C, Patwardhan A. Biomechanical Evaluation of a Low Profile, Anchored Cervical Interbody Spacer Device at the Index Level or Adjacent to Plated Fusion. Spine (Phila Pa 1976). 2014 Jun 1;39(13):E763-9.

  10. Smith Z, Vastardis G, Carandang G, Havey R, Hannon S, Dahdaleh N, Voronov L, Fessler R, Patwardhan A. Biomechanical Effects of a Unilateral Approach to Minimally Invasive Lumbar Decompression. PlosOne. 2014 Mar 21;9(3):e92611.

  11. Voronov L, Vastardis G, Zelenakova J, Carandang G, Havey R, Waldorff E, Zindrick M, Patwardhan A. Biomechanical Characteristics of an Integrated Lumbar Interbody Fusion Device. International Journal of Spine Surgery. Volume 8, 2014.

  12. Fry R, Alamin T, Voronov L, Fielding L, Ghanayem A, Parikh A, Carandang G, Mcintosh B, Havey R, Patwardhan A. Compressive Preload Reduces Segmental Flexion Instability After Progressive Destabilization of the Lumbar Spine. Spine. 2014 39(2):E74-E81.

  13. Fielding L, Alamin T, Voronov L, Carandang G, Havey R, Patwardhan A. Parametric and cadaveric models of lumbar flexion instability and flexion restricting dynamic stabilization system. European Spine Journal, Epub 2013.

  14. Gudavalli MR, Potluri T, Carandang G, Havey R, Voronov L, Cox J, Rowell R, Kruse R, Joachim G, Patwardhan A, Henderson C, Goertz C. Intradiscal Pressure Changes during Manual Cervical Distraction: A Cadaveric Study. Evidence-Based Complementary and Alternative Medicine. 2013.

  15. Wojewnik B, Ghanayem A, Tsitsopoulos P, Voronov L, Potluri T, Havey R, Zelenakova J, Patel A, Carandang G, Patwardhan A. Biomechanical Evaluation of a Low Profile, Anchored Cervical Interbody Spacer Device in the Setting of Progressive Flexion-Distraction Injury of the Cervical Spine. Eur Spine J. 2012 Aug 1.

  16. Patwardhan AG, Havey RM, Wharton ND, Tsitsopoulos PP, Newman P, Carandang G, Voronov LI. Asymmetric Motion Distribution Between Components of a Mobile-Core Lumbar Disc Prosthesis: An Explanation of Unequal Wear Distribution in Explanted CHARITÉ Polyethylene Cores. J Bone Joint Surg Am. 2012 May 2; 94(9):846-54.

  17. Tsitsopoulos PP, Wojewnik B, Voronov LI, Havey RM, Renner SM, Zelenakova J, McIntosh B, Carandang G, Abjornson C, Patwardhan AG. Effect of Prosthesis Endplate Lordosis Angles on L5-S1 Kinematics After Disc Arthroplasty. Eur Spine J. 2012 Jun; 21 Suppl 5:585-91. Epub 2012 Apr 4.

  18. Tsitsopoulos PP, Serhan H, Voronov LI, Carandang G, Havey RM, Ghanayem AJ, Patwardhan AG. Would an Anatomically Shaped Lumbar Interbody Cage Provide Better Stability? An In Vitro Cadaveric Biomechanical Evaluation. J Spinal Disord Tech. 2012 Feb 21. [Epub ahead of print] [abstract link]

  19. Havey RM, Voronov LI, Tsitsopoulos PP, Carandang G, Ghanayem AJ, Lorenz MA, Zindrick MR, Patwardhan AG. Relaxation Response of Lumbar Segments Undergoing Disc Space Distraction: Implications to the Stability of Anterior Lumbar Interbody Implants. Spine (Phila Pa 1976). 2011 Sep 8. [Epub ahead of print] Renner SM, Tsitsopoulos PP, Dimitriadis AT, Voronov LI, Havey RM, Carandang G, McIntosh B, Carson C, Ty D, Ringelstein JG, Patwardhan AG. Restoration of spinal alignment and disk mechanics following polyetheretherketone wafer kyphoplasty with StaXx FX. AJNR Am J Neuroradiol. 2011 Aug;32(7):1295-300.

  20. Martin S, Ghanayem A, Tzermiadianos M, Voronov L, Havey R, Renner S, Carandang G, Abjornson C, Patwardhan AG. Kinematics of Cervical Total Disc Replacement Adjacent to a Two-Level, Straight vs. Lordotic Fusion. Spine (Phila Pa 1976). 2011 Aug 1;36(17):1359-66.

  21. Lee M, Dumonski M, Phillips F, Voronov L, Renner S, Carandang G, Havey R, Patwardhan AG. Disc Replacement adjacent to Cervical Fusion: A Biomechanical Comparison of Hybrid Construct vs. Two-Level Fusion. Spine (Phila Pa 1976). 2011 Feb 1. [Epub ahead of print]

  22. Gocke SP, Rottier FJ, Havey RM, Renner SM, Patwardhan AG, Carandang G. Quantitative Analysis of the Long- and Short-arm Crescentic Shelf Bunionectomy Osteotomies in Fresh Cadaveric Matched Pair Specimens. J Foot Ankle Surg. 2011 Mar-Apr;50(2):158-64.

  23. Patwardhan AG, Tzermiadianos MN, Tsitsopoulos PP, Voronov LI, Renner SM, Reo ML, Carandang G, Ritter-Lang K, Havey RM. Primary and coupled motions after cervical total disc replacement using a compressible six-degree-of-freedom prosthesis. Eur Spine J. 2010 Sep 24

  24. Gaffey JL, Ghanayem AJ, Voronov ML, Havey RM, Carandang G, Abjornson C, Patwardhan AG. Effect of Increasing Implant Height on Lumbar Spine Kinematics and Foraminal Size Using the ProDisc-L Prosthesis. Spine (Phila Pa 1976). 2010 Volume 35(19):pp 1777-82.

  25. Voronov ML, Pinzur MS, Hoffman HH, Havey RM, Carandang G, Patwardhan AG. Static measure of foot loading. Foot Ankle Spec. 2009 Dec;2(6):267-70.

  26. Nassos JT, Ghanayem AJ, Sasso RC, Tzermiadianos MN, Voronov LI, Havey RM, Rinella AS, Carandang G, Patwardhan AG. Biomechanical evaluation of segmental occipitoatlantoaxial stabilization techniques. Spine (Phila Pa 1976). 2009 Dec 1;34(25):2740-4.

  27. Phillips FM, Tzermiadianos MN, Voronov LI, Havey RM, Carandang G, Dooris A, Patwardhan AG. Effect of two-level total disc replacement on cervical spine kinematics. Spine (Phila Pa 1976). 2009 Oct 15;34(22):E794-9.

  28. Voronov L, Havey R, Sjovold S, Funk M, Carandang G, Zindrick D, Rosler D, Patwardhan AG. Kinematics of Total Facet Replacement (TFAS-TL™) with Total Disc Replacement. Spine Arthroplasty Society Journal 2009 September 3(3):85–90.

  29. Voronov L, Havey R, Rosler D, Sjovold S, Rogers S, Carandang G, Ochoa J, Yuan H, Webb S, Patwardhan AG. L5-S1 Segmental Kinematics after Facet Arthroplasty. Spine Arthroplasty Society Journal 2009 June 3(2):50-8.

  30. Paxinos O, Ghanayem AJ, Zindrick MR, Voronov LI, Havey RM, Carandang G, Hadjipavlou A, Patwardhan AG. Anterior cervical discectomy and fusion with a locked plate and wedged graft effectively stabilizes flexion-distraction stage-3 injury in the lower cervical spine: a biomechanical study. Spine 2009 Jan 1;34(1):E9-15.

  31. Phillips FM, Tzermiadianos MN, Voronov LI, Havey RM, Carandang G, Renner SM, Rosler DM, Ochoa JA, Patwardhan AG. Effect of the Total Facet Arthroplasty System after complete laminectomy-facetectomy on the biomechanics of implanted and adjacent segments. Spine J. 2009 Jan-Feb;9(1):96-102.

  32. Tzermiadianos MN, Mekhail A, Voronov LI, Zook J, Havey RM, Renner SM, Carandang G, Abjornson C, Patwardhan AG. Enhancing the stability of anterior lumbar interbody fusion: a biomechanical comparison of anterior plate versus posterior transpedicular instrumentation. Spine. 2008 Jan 15;33(2):E38-43.

  33. Snyder J, Tzermiadianos M, Ghanayem AJ, Voronov LI, Rinella A, Dooris A, Carandang G, Renner S, Havey R, Patwardhan AG. Effect of Uncovertebral Joint Excision on the Motion Response of the Cervical Spine after Total Disc Replacement", Spine 2007, ec 15;32(26):2965-9.

  34. Phillips FM, Voronov LI, Gaitanis IN, Carandang G, Havey RM, Patwardhan AG. Biomechanics of posterior dynamic stabilizing device (DIAM) after facetectomy and discectomy. Spine J. 2006 Nov-Dec;6(6):714-22.

  35. Fagelman M, Sartori M, Freedman KB, Patwardhan AG, Carandang G, Marra G. Biomechanics of coracoacromial arch modification. J Shoulder Elbow Surg. 2007 Jan-Feb;16(1):101-6.

  36. O'Leary P, Nicolakis M, Voronov L, Zindrick M, Ghanayem A, Havey R, Carandang G, Sartori M, Gaitanis I, Fronczak S, Patwardhan AG. Response of Charité Total Disc Replacement under Physiologic Loads: Prosthesis Component Motion Patterns. Spine J 2005 Nov-Dec;5(6):590-9. Winner 2005 Outstanding Paper Award - North American Spine Society.

  37. Gaitanis IN, Carandang G, Phillips FM, Magovern B, Ghanayem AJ, Voronov LI, Havey RM, Zindrick MR, Hadjipavlou AG, Patwardhan AG. Restoring geometric and loading alignment of the thoracic spine with a vertebral compression fracture: effects of balloon (bone tamp) inflation and spinal extension. Spine J 2005;5(1):45-54.

  38. Stanley SK, Ghanayem AJ, Voronov LI, Havey RM, Paxinos O, Carandang G, Zindrick MR, Patwardhan AG. Flexion-Extension Response of the Thoracolumbar Spine Under Compressive Follower Preload. Spine, 2004 November 15;29(22):E510-514.

  39. Phillips FM, Cunningham B, Carandang G, Ghanayem AJ, Voronov LI, Havey RM, Patwardhan AG. Effect of Supplemental Translaminar Facet Screw Fixation on the Stability of Stand-Alone ALIF Cages Under Physiologic Loads. Spine, 2004;29:1731-6.

  40. Gavin TM, Carandang G, Havey RM, Flanagan P, Ghanayem AJ, Patwardhan AG. Biomechanical Analysis of Cervical Orthoses in Flexion and Extension: A Comparison of Cervical Collars and Cervical Thoracic Orthoses. J Rehabilitation Research and Development, 40 (6): 527-538, 2003.

  41. Patwardhan AG, Carandang G, Ghanayem A, Havey RM, Cunningham B, Voronov LI, Phillips FM. Compressive preload improves the stability of the anterior lumbar interbody fusion (ALIF) cage construct. J Bone Joint Surg (Am), 85-A:1749-1756, 2003.

  42. Patwardhan AG, Havey R, Carandang G, Simonds J, Voronov Li, Ghanayem AJ, Meade KP, Gavin TM, Paxinos O. Effect of Compressive Follower Preload on the Flexion-Extension Response of the Human Lumbar Spine. J Orthopaedic Research, 21(3):540-546, 2003.

 

CONFERENCE ABSTRACTS AND PRESENTATIONS:

  1. Khayatzadeh S, Voronov L, Goodsitt J, Smith Z, Germanwala A, Carandang G, Havey R, Lauryssen C, Schätz C, MD, Ghanayem G, MD, Patwardhan A. Sagittal Balance Considerations In Planning Multilevel Cervical Intervention: Effect of Arthroplasty vs. Fusion on Adjacent Segment Motions. International Society of the Advancement of Spine Surgery Annual Meeting, Las Vegas, NV, April 6-8, 2016.

  2. Mica M, Voronov L, Carandang G, Havey R, Patwardhan A. Biomechanical Characteristics of an Expandable Lumbar Interbody Fusion System. International Society of the Advancement of Spine Surgery Annual Meeting, Las Vegas, NV, April 6-8, 2016.

  3. Voronov L, Conti Mica M, Carandang G, Havey R, Patwardhan A. Biomechanical Assessment of the Novel Expandable Lumbar Interbody Fusion System. Joint Section on Disorders of the Spine and Peripheral Nerves, Oral Platform Point Presentation for the Spine Summit 2016 Meeting in Orlando, Florida, March 16-19, 2016.
  4. Patwardhan A, PhD, Khayatzadeh S, Voronov L, MD, Goodsitt J, MS, Havey R, MS, Smith Z, Germanwala A, MD, Carandang G, Lauryssen C. Sagittal Balance Considerations In Planning Multilevel Cervical Intervention: Arthroplasty vs. Fusion. Joint Section on Disorders of the Spine and Peripheral Nerves, Oral Platform Point Presentation for the Spine Summit 2016 Meeting in Orlando, Florida, March 16-19, 2016.

  5. Muriuki M, Havey R, Voronov L, Carandang G, Lomasney L, Patwardhan A. Effect of Intervertebral Disk Degeneration Grade and Gender on Hysteresis in the Human Lumbar Spine. Orthopaedic Research Society, Orlando, FL. March 5-8, 2016.

  6. Patwardhan A, Carandang G, Voronov L, Havey R, Paul G, Lauryssen C, Coric D, Dimmig T, Musante D. Are Collapsed Cervical Discs Amenable to Total Disc Arthroplasty? Analysis of Prospective Clinical Study Results with 2-year Follow-up. CSRS Annual Meeting, December 3-5, 2015, San Diego, CA.

  7. Muriuki MG, Havey RM, Voronov LI, Carandang G, Lomasney L, Patwardhan AG. Are kinematic measures of motion of the lower lumbar spine related to Pfirrmann grade? ISSLS Annual Meeting, June 8-12, 2015,

  8. San Francisco, CA. Sears W, Sullivan R, Voronov L, Havey R, Carandang R, Muriuki M, Khayatzadeh S, Patwardhan A. Progressively increased mechanical burden on adjacent levels after 1-, 2- and 3-level lumbar fusions. Spine Society of Australia Annual Meeting, April 10-12, 2015, Brisbane, Australia.

  9. Sears W, Sullivan R, Voronov L, Havey R, Carandang R, Muriuki M, Khayatzadeh S, Eckhof S, Ganter D, Patwardhan A. ‘Topping-off’ 2- and 3-level lumbar spinal fusions with pedicle screw based, flexible couplers of different stiffness. Spine Society of Australia Annual Meeting, April 10-12, 2015, Brisbane, Australia.

  10. Voronov L, Havey R, Carandang G, Muriuki M, Khayatzadeh S, Eckhof S, Ganter D, Patwardhan A. Topping-off’ 2- and 3-Level Lumbar Spinal Fusions with Pedicle Screw Based, Flexible Couplers of Different Stiffness. International Society of the Advancement of Spine Surgery Annual Meeting, April 15-17, 2015, San Diego, CA. Smith Z,

  11. Sears W, Sullivan R, Voronov L, Havey R, Carandang G, Muriuki M, Khayatzadeh S, Eckhof S, Ganter D, Patwardhan A. Progressively Increased Mechanical Burden on Adjacent Levels after 1-, 2-, and 3-Level Fusions in the Lumbar Spine. International Society of the Advancement of Spine Surgery Annual Meeting, April 15-17, 2015, San Diego, CA.

  12. Voronov LI, Havey RM, Vastardis G, Carandang G, Muriuki M, Patwardhan AG. Biomechanical Comparison of Fusion Constructs to a Spinous Process Clamp. International Society of the Advancement of Spine Surgery Annual Meeting, April 15-17, 2015, San Diego, CA.

  13. Carandang G, Voronov LI, Havey RM, Lauryssen C, Coric D, Dimmig T, Musante D. Does Magnitude of Disc Space Distraction Affect Postoperative Motion After Total Disc Replacement with Compressible Prosthesis? International Society of the Advancement of Spine Surgery Annual Meeting, April 15-17, 2015, San Diego, CA.

  14. Patwardhan A, Khayatzadeh S, Nguyen NL, Havey R, Voronov L, Muriuki M, Carandang G, Ghanayem A, Patel A, Smith Z, Sears W. Is Cervical Sagittal Imbalance an Independent Risk Factor for Adjacent Segment Disease After Multilevel Fusion? Orthopaedic Research Society Annual Meeting, March 28-31, 2015, Las Vegas, NV.

  15. Patwardhan A, Khayatzadeh S, Nguyen N, Havey R, Voronov L, Muriuki M, Carandang G, Ghanayem A, Patel A, Smith Z, Sears W. Is Cervical Sagittal Imbalance an Independent Risk Factor for Adjacent Segment Disease? CSRS Annual Meeting, December 4-6, 2014, Orlando, FL.

  16. Muriuki M, Havey R, Voronov L, Carandang G, Lomasney L, Patwardhan A. Pfirrman grade as a predictor of range of motion, angular stiffness and relative size of high-flexibility zone in the lumbar spine. North American Spine Society Annual Meeting, San Francisco, CA, November 12-15, 2014.

  17. Voronov L, Havey R, Vastardis G, Zelenakova J, Carandang G, Muriuki M, Patwardhan A. Biomechanical Evaluation of Interspinous Fixation System in Different Fusion Constructs: Laboratory Investigation. Congress of Neurological Surgeons, October 18-22, 2014, Boston, MA.

  18. Patwardhan A, Muriuki M, Havey R, Voronov L, Carandang G. Pfirrmann Grade as a Predictor of Range and Quality of Motion. EuroSpine Annual Meeting, October 1-3, 2014, Lyon, France.

  19. Havey R, Muriuki M, Carandang G, Voronov L, Patwardhan A. Assessment of Neuroforaminal Area of the Lumbar Spine During Flexion-Extension Motion. International Society for the Study of the Lumbar Spine Annual Meeting. Seoul, Korea, June 3-7, 2014.

  20. Baluch D, Patel A, Lullo B, Havey RM, Voronov LI, Nguyen NL, Carandang G, Ghanayem AJ, Patwardhan AG. Effect of Physiologic Loads on Cortical and Traditional Pedicle Screw Fixation. International Society for the Study of the Lumbar Spine Annual Meeting. Seoul, Korea, June 3-7, 2014.

  21. Patwardhan A, Havey R, Muriuki M, Khayatzadeh S, Voronov L, Carandang G, Nguyen NL, Ghanayem A, Schuit D, Sears W. Sub-Occipital Hyperextension as a Postural Consequence of Global Cervical Sagittal Imbalance - A Predictive Model. ISASS Annual Meeting, April 30-May 2, 2014, Miami, FL.

  22. Voronov LI, Havey RM, Vastardis G, Carandang G, Zelenakova J, Abjornson C, Patwardhan AG. Integrated interbody fusion device in a 2-level cervical construct: biomechanical evaluation. ISASS Annual Meeting, April 30-May 2, 2014, Miami, FL.

  23. Baluch D, Patel A, Lullo B, Havey R, Voronov L, Nguyen NL, Carandang G, Ghanayem A, Patwardhan A. Effect of Physiologic Loads on Cortical and Traditional Pedicle Screw Fixation. ISASS Annual Meeting, April 30-May 2, 2014, Miami, FL.

  24. Voronov L, Havey R, Vastardis G, Zelenakova J, Carandang G, Muriuki M, A. Patwardhan. Spinous Process Clamp in Cadaveric Specimens: Biomechanical Comparison of Fusion Constructs. American Association of Neurological Surgeons Annual Meeting. San Francisco, CA, April 5-9, 2014.

  25. Zindrick M, Vastardis G, Voronov L, Zelenakova J, Potluri T, Carandang G, Waldorff E, Havey R, Patwardhan A. Biomechanical Characteristics of an Integrated Lumbar Interbody Fusion Device. American Association of Neurological Surgeons Annual Meeting. San Francisco, CA, April 5-9, 2014.

  26. Voronov LI, Havey RM, Vastardis G, Carandang G, Zelenakova J, Abjornson C, Patwardhan AG. Integrated Interbody Fusion Device in a 2-Level Cervical Construct: Biomechanical Evaluation. American Association of Neurological Surgeons Annual Meeting. San Francisco, CA, April 5-9, 2014.

  27. Patwardhan A, Havey R, Muriuki M, Voronov L, Khayatzadeh S, Carandang G, Nguyen NL, Ghanayem A, Patel A, Sears W. A Novel Laboratory Model of Postural Consequences of Cervical Sagittal Imbalance – Biomechanical Data Can Help Clinical Practice. Orthopedic Research Society Annual Meeting, New Orleans, LA, March 15-18, 2014.

  28. Havey R, Muriuki M, Carandang G, Vastardis G, Zelenakova J, Voronov L, Patwardhan A. Neuroforaminal Assessment During Dynamic Flexion Extension Range of Motion. Orthopedic Research Society Annual Meeting, New Orleans, LA, March 15-18, 2014.

  29. Patwardhan A, Havey R, Muriuki M, Voronov L, Khayatzadeh S, Carandang G, Ghanayem A, Nguyen N, Sears W. Effect of Global Cervical Sagittal Imbalance on Postural Compensation and Cervical Mechanics – Can Biomechanical Data Help Improve Clinical Practice? American Academy of Orthopedic Surgeons Annual Meeting, New Orleans, IL, March 11-15, 2014.

  30. Voronov L, Havey R, Vastardis G, Carandang G, Potluri T, Zelenakova J, Abjornson C, Patwardhan A. Lag-design integrated cervical interbody fusion device with lag screws. Congress of Neurological Surgeons Annual Meeting. October 19-23, 2013, San Francisco, CA.

  31. Vastardis G, Dial B, Stojanovic M, Marjan A, Potluri T, Carandang G, Hadjipavlou A, Voronov L, Zindrick M, Patwardhan A. Cement Augmentation of Intact Vertebral Bodies Using Percutaneous Unilateral Transpedicular Balloon Kyphoplasty for the Mid & Upper Thoracic Spine. Three-dimensional Analysis of Cement Distribution in the Different Vertebral Body’s Zones. North American Spine Society Annual Meeting, New Orleans, October 9-12, 2013.

  32. Vastardis G, Marjan A, Stojanovic M, Dial B, Schaus E, Potluri T, Carandang G, Hadjipavlou A, Voronov L, Zindrick M, Patwardhan A. Feasibility of Balloon Kyphoplasty using unilateral transpedicular approach for the Mid & Upper Thoracic Spine – A Laboratory Study. North American Spine Society Annual Meeting, New Orleans, October 9-12, 2013.

  33. Patwardhan A, Havey R, Muriuki M, Nguyen L, Voronov L, Patel A, Zindrick M, Carandang G, Schuit D, Ghanayem A. Postural Compensation and Disc Mechanics in Forward Head Posture – A Novel Laboratory Model of Cervical Sagittal Balance. North American Spine Society Annual Meeting, New Orleans, October 9-12, 2013.

  34. Patwardhan A, Havey R, Muriuki M, Nguyen N, Voronov L, Patel A, Zindrick M, Carandang G, Schuit D, Ghanayem A. Effect of Global Cervical Sagittal Imbalance on Postural Compensation and Cervical Mechanics. EuroSpine. October 2-4, 2013, Liverpool, Great Britain.

  35. Sinclair M, Ghanayem A, Wojewnik B, Havey R, Lee A, Voronov L, Carandang G, Patwardhan A. Role of facet orientation and soft tissue integrity in unstable degenerative spondylolisthesis: a laboratory model. ISSLS Annual Meeting, Scottsdale, AZ, May 13-17, 2013.

  36. Patwardhan A, Tsitsopoulos P, Potluri T, Zelenakova J, Carandang G, Phillips F, Zindrick M, Ghanayem A, Havey R, Voronov L. Effect of pll resection on the stability of cervical disc arthroplasty. Spine Society of Australia Annual Meeting. Australia, April 19-21 2013.

  37. Voronov L, Havey R, Vastardis G, Carandang G, Potluri T, Zelenakova J, Abjornson C, Patwardhan A. Biomechanical characteristics of an integrated cervical interbody fusion device. Spine Society of Australia Annual Meeting. Australia, April 19-21 2013.

  38. Gudavalli M, Potluri T,  Carandang G, Havey R, Voronov L, Cox J, Rowell R, Kruse R, Joachim G, Patwardhan A, Henderson C, Goertz C. Cervical intradiscal pressure changes during manual distraction. World Federation of Chiropractic, Durban, South Africa, April 10-13, 2013.  

  39. Gudavalli M, Potluri T, Carandang G, Havey R, Voronov L, Cox J, Rowell R, Kruse R, Joachim G, Patwardhan A, Henderson C, Goertz C. Intradiscal pressure changes during manual cervical distraction: a cadaveric study. World Federation of Chiropractic (WFC) Congress, April 10-12, 2013, Durban, South Africa.

  40. Vastardis G, Dial B, Stojanovich M, Marjan A, Potluri T, Carandang G, Hadjipavlou A, Voronov L, Zindrick M, Patwardhan A. Cement distribution after percutaneous unilateral transpedicular balloon kyphoplasty for the mid & upper thoracic spine. GRIBOI 2013 Injectable Osteoarticular Biomaterials and Bone Augmentation Procedures, Boston, MA, April 8-10, 2013.

  41. Smith Z, Vastardis G, Carandang G, Havey R, Hannon S, Voronov L, Patwardhan A, Fessler R. Biomechanical Evaluation of a Unilateral, Minimally Invasive Approach for Decompression in the Lumbar Spine: A Cadaver Study. International Society for the Advancement of Spine Surgery (ISASS) Annual Meeting, Vancouver, Canada, April 3-5, 2013.

  42. Havey R; Potluri T; Voronov L; Tsitsopoulos P; Phillips F; Zindrick M; Goodsitt J; Carandang G; Patwardhan A. Assessment of neuroforaminal and canal dimensions during cervical kinematics. International Society for the Advancement of Spine Surgery (ISASS) Annual Meeting, Vancouver, Canada, April 3-5, 2013.

  43. Patwardhan A, Potluri T, Mcintosh B, Tsitsopoulos P, Voronov L, Carandang G, Zindrick M, Havey R. Do Facets Govern Flexion-Extension Motion Pattern in the Cervical Spine? Implications to Cervical Prosthesis Design. International Society for the Advancement of Spine Surgery (ISASS) Annual Meeting, Vancouver, Canada, April 3-5, 2013.

  44. Sinclair M, Ghanayem A, Wojewnik B, Havey R, Lee A, Voronov L, Carandang G, Patwardhan A. Degenerative Spondylolisthesis: The Effect of Facet Joint Morphology on Instability. American Academy of Orthopedic Surgeons Annual Meeting, Chicago, IL, March 19-23, 2013.

  45. Brody M, Patel A, Ghanayem A, Carandang G, Havey R, Voronov L, Vastardis G, Potlouri T, Patwardhan A. The Effect of Posterior Decompressive Procedures on Segmental Range of Motion Following Cervical Total Disc Arthroplasty. American Academy of Orthopedic Surgeons Annual Meeting, Chicago, IL, March 19-23, 2013.

  46. Smith Z, Vastardis G, Carandang G, Hannon S, Havey R, Voronov L, Patwardhan A, Fessler R. The Biomechanics of a Unilateral Approach to Minimally Invasive Lumbar Decompression - A Cadaver Study. ANS/CNS Section on Disorders of the Spine and Peripheral Nerves Annual Meeting, Phoenix, AZ, March 6-9, 2013.

  47. Vastardis G, Marjan A, Dial B, Stojanovich M, Potluri T, Carandang G, Hadjipavlou A, Voronov L, Zindrick M, Patwardhan A. Feasibility of Percutaneous Unilateral Transpedicular Balloon Kyphoplasty for the Mid & Upper Thoracic Spine – A Laboratory Study. American Society of Spine Radiology Annual Meeting, Scottsdale, AZ, February 21-24, 2013.

  48. Patwardhan A., Tsitsopoulos P, Potluri T, Hannon S, Zelenakova J, Carandang G, Phillips F, Zindrick M, Ghanayem A, Havey R, Voronov L. Does PLL Resection Affect the Stability of Cervical Disc Arthroplasty? Cervical Spine Research Society Annual Meeting, Chicago, IL, December 6-8, 2012.

  49. Brody M, Patel A, Ghanayem A , Carandang G, Havey R, Voronov L, Vastardis G, Potlouri T, Patwardhan A. The Effect of Posterior Decompressive Procedures on Segmental Range of Motion Following Cervical Total Disc Arthroplasty. Cervical Spine Research Society Annual Meeting, Chicago, IL, December 6-8, 2012.

  50. Patwardhan A, McIntosh B, Voronov, L, Potluri T, Hannon S, Carandang G, Haas N, Havey R, Zindrick M. Do Facets Govern Flexion-Extension Motion Pattern in the Cervical Spine? Spineweek 2012, Rai, Amsterdam, May 28-Jun 1, 2012.

  51. Patwardhan A, Voronov L, Tsitsopoulos P, Potluri T, Hannon S, Zelenakova J, Carandang G, Phillips F, Zindrick M, Ghanayem A, Havey R. Effect of PLL Resection on TDR Kinematics: To Cut or Not to Cut. Submitted to International Society for the Advancement of Spine Surgery (ISASS) Annual Meeting, March 20-23, 2012, Barcelona, Spain.

  52. Tsitsopoulos P, Voronov L, Ghanayem A, Zindrick M, Lee D, Potluri T, Zelenakova J, Carandang G, Havey R, Patwardhan A. Anterior cervical discectomy and instrumentation with stand-alone cages, static and rotational-dynamic plates: A biomechanical analysis and comparison. 14th European Congress of Neurosurgery, Rome, Italy, October 9-14, 2011.

  53. Zindrick M, Patwardhan A, Havey R, Wharton N, Tsitsopoulos P, Newman P, Carandang G, Voronov L. Motion distribution between components of a mobile-core lumbar disc prosthesis implanted in patients: an explanation of unequal wear distribution in explanted polyethylene cores. 63rd Annual Meeting of the Association of Bone and Joint Surgeons, Dublin, Ireland, June 8-12, 2011.

  54. Patwardhan A, Havey R, Wharton N, Tsitsopoulos P, Newman P, Carandang G, Voronov L. Unequal Motion Distribution between Components of a Mobile-core Lumbar Disc Prosthesis Implanted in Patients: An Explanation of Unequal Wear Distribution in Explanted Charité Polyethylene Cores.Arthroplasty Society Annual Meeting, Las Vegas, NV, Apr. 26-29, 2011.

  55. Wojewnik B, Ghanayem A, Tsitsopoulos P, Voronov L, Potluri T, Havey R, Zelenakova J, Carandang G, Patwardhan A. Biomechanical Evaluation of Low Profile, Anchored Cervical Interbody Spacer Device in the Setting of Cervical Flexion Distraction Injury. Mid-America Orthopaedic Association, Tucson, AZ, April 6-10, 2011.

  56. Wojewnik B, Ghanayem A, Tsitsopoulos P, Voronov L, Potluri T, Havey R, Zelenakova J, Carandang G, Patwardhan A. Biomechanical Evaluation of a Low Profile, Anchored Cervical Interbody Spacer Device in the Setting of Progressive Flexion-Distraction Injury. Cervical Spine Research Society, Charlotte, North Carolina, December 2 - 4, 2010.

  57. Voronov M, Pinzur M, Gil J, Havey R, Carandang G, Hopkinson W, Wu K, Rees H, Patwardhan A. The Relationship Between Knee Arthroplasty and Foot Loading. American Orthopaedic Foot & Ankle Society 26th Annual Summer Meeting, National Harbor, Maryland, July 7-10, 2010.

  58. Tsitsopoulos P, Wojewnik B, Voronov L, Havey R, McIntosh B, Zelenakova J, Carandang G, Renner S, Abjornson C, Patwardhan A. Effect of Prosthesis Endplate Lordosis Angles on the Kinematics of the L5-S1 Segment After Total Disc Arthroplasty. Spine Arthroplasty Society Annual Meeting, New Orleans, LA, Apr. 27-30, 2010.

  59. Renner S, Tsitsopoulos P, Dimitriadis A, Voronov L, Havey R, Carandang G, Macintosh B, Carson C, Ty D, Patwardhan A. Effectiveness of Structural Kyphoplasty in Reducing Vertebral Kyphosis and Endplate Deformity after Osteoporotic Vertebral Compression Fractures. Spine Arthroplasty Society Annual Meeting, New Orleans, LA, Apr. 27-30, 2010.

  60. Sylvester T, Ghanayem A, Renner S, Voronov L, McIntosh B, Havey R, Carandang G, Lee A, Patwardhan A. The Effect of Sagittal Alignment on Posterior Fixation at the Cervicothoracic Junction. Cervical Spine Research Society, Salt Lake City, December 3-5, 2009.

  61. Balaram A, Ghanayem A, O'Leary P, Voronov L, Havey R, Carandang G, Abjornson C, Patwardhan A. Biomechanical Evaluation of a Low Profile, Anchored Cervical Interbody Spacer Device at the Index Level or Adjacent to Plated Fusion. Cervical Spine Research Society, Salt Lake City, December 3-5, 2009.

  62. Hartjen C, Voronov L, Dimitriadis A, McIntosh B, Havey R, Carandang G, Renner S, Phillips F, Patwardhan A. The effect of lumbar facet arthroplasty with the ACADIA facet replacement system on spinal kinematics. North American Spine Society, San Francisco, November 10-14, 2009.

  63. Phillips F, Voronov L, Dimitriadis A, Hartjen C, McIntosh B, Havey R, Carandang G, Renner S, Patwardhan A. Different Grades of Posterior Element Decompression Alter Intact Lumbar Kinematics. North American Spine Society, San Francisco, November 10-14, 2009.

  64. Patwardhan A, Voronov L, Havey R, Tzermiadianos M, Carandang G, McIntosh B, Renner S, Ghanayem A, Zindrick M, Lorenz M, Phillips F. Limited Restoration of Primary and Coupled Motions in Lateral Bending and Axial Rotation after Total Disc Replacement: A Common Finding in Cervical Disc Prostheses. North American Spine Society, San Francisco, November 10-14, 2009.

  65. Fry R, Alamin T, Voronov L, Fielding L, Ghanayem A, Parikh A, Carandang G, Mcintosh B, Zelenakova J, Havey R, Patwardhan A. Increasing Compressive Preload Reduces The Segmental Instability Produced By Progressive Destabilization. North American Spine Society, San Francisco, November 10-14, 2009.

  66. Sylvester T, Ghanayem A, Renner S, Voronov L, McIntosh B, Havey R, Carandang G, Lee A, Patwardhan A. The Effect of Sagittal Alignment on Posterior Fixation at the Cervicothoracic Junction. North American Spine Society, San Francisco, November 10-14, 2009.

  67. Renner S, Dimitriadis A, Voronov L, Havey R, Carandang G, Macintosh B, Carson C, Ty D, Patwardhan A. Reduction of Endplate Deformity after Vertebral Compression Fracture Using Structural Kyphoplasty Restores Intervertebral Disc Mechanics to Pre-Fracture Values. Congress of Neurological Surgeons, October 24-29, 2009, New Orleans, LA.

  68. Renner S, Dimitriadis A, Voronov L, Havey R, Carandang G, MacIntosh B, Carson C, Ty D, Patwardhan A. Reduction of Endplate Deformity with Structural Kyphoplasty Restores Intervertebral Disc Mechanics. EuroSpine Annual Meeting, October 21-24, 2009, Warsaw, Poland.

  69. Patwardhan A, Wharton N, Newman P, Lorenz M, Voronov L, Carandang G, Renner S, Havey R, Zindrick M. Motion distribution within a mobile-core disc prosthesis: A explanation of unequal wear in explanted cores. ISSLS Annual Meeting, May 4-8, 2009.

  70. Dimitriadis A, Voronov L, Renner S, Carandang G, Havey R, Macintosh B, Zelenakova J, Gilbride C, Patwardhan A. Effect of Implant Placement Variability in the Sagittal Plane on Three-dimensional Motion Response of Cervical Total Disc Replacement using a Mobile-core Disc Prosthesis. Spine Arthroplasty Society Annual Meeting, London, England, Apr. 28 - May 1, 2009.

  71. Patwardhan A, Voronov L, Renner S, Carandang G, Havey R. Total Disc Arthroplasty Using a Compressible Disc Prosthesis: Effect of Compressive Preload Magnitude on the Kinematics of Lumbar Spine. Spine Arthroplasty Society Annual Meeting, London, England, Apr. 28 - May 1, 2009.

  72. Voronov L, Havey R, Sjovold S, Funk M, Carandang G, Zindrick D, Rosler D, Patwardhan A. Kinematics of Total Facet Replacement TFAS-TL with Total Disc Replacement. Spine Arthroplasty Society Annual Meeting, London, England, Apr. 28 - May 1, 2009.

  73. Havey R, Voronov L, Vadapalli S, Carandang G, Conroy M, Abjornson C, Rosler D, Patwardhan A. Kinematics of a Fixed Center-of-Rotation Total Disc Replacement with Total Facet Replacement. Spine Arthroplasty Society Annual Meeting, London, England, Apr. 28 - May 1, 2009.

  74. Patwardhan A, Wharton N, Newman P, Voronov L, Carandang G, Renner S,  Havey R. Explanation of Unequal Wear Patterns in the Charité Polyethylene Core: A Quantitative Analysis of Intra-prosthesis Motion Distribution. Spine Arthroplasty Society Annual Meeting, London, England, Apr. 28 - May 1, 2009.

  75. Renner S, Dimitriadis A, Voronov L, Havey R, Carandang G, Macintosh B, Carson C, Ty D, Patwardhan A.  Restoration of Intervertebral Disc Mechanics after Endplate Deformity Reduction using Structural Kyphoplasty.  Society of Neurointerventional Surgery.  Cancun, Mexico, April 1, 2009.

  76. Patwardhan A, Voronov L, Renner M, Carandang G, Havey R. Effect of Compressive Preload Magnitude on the Quality and Quantity of Motion of Lumbar Spine after Total Disc Arthroplasty Using a Compressible Disc Prosthesis. North American Spine Society, Toronto, Canada, October 15-18, 2008.

  77. Patwardhan A, Wharton N, Newman P, Voronov L, Carandang G, Renner S, Havey R. Explanation of Unequal Wear Patterns in the Charité Polyethylene Core: A Quantitative Analysis of Intra-Prosthesis Motion Distribution. North American Spine Society, Toronto, Canada, October 15-18, 2008.

  78. Gaffey J, Ghanayem A, Voronov M, Havey R, Sartori M, Carandang G, Abjornson C, Patwardhan A Effect of Implant Height on Lumbar Spine Kinematics and Foraminal Size after Total Disc Arthroplasty SpineWeek 2008, Geneva, Switzerland, May 26-31, 2008.

  79. Lee M, Dumonski M, Phillips F, Voronov L, Renner S, Carandang G, Havey R, Patwardhan A. Disc Replacement adjacent to previous cervical fusion: A Biomechanical Comparison of Hybrid Construct vs. Two-Level Fusion. SpineWeek 2008, Geneva, Switzerland, May 26-31, 2008.

  80. Patwardhan A, Carandang G, Havey R, Voronov L, Renner S, Tzermiadianos M. Predicting post-fusion motion compensation under displacement-control strategy using load-control flexibility data - an alternative to the hybrid test protocol. SpineWeek 2008, Geneva, Switzerland, May 26-31, 2008.

  81. Voronov L, Havey R, Rosler D, Sjovold S, Rogers S, Carandang G, Ochoa J, Patwardhan A. Kinematics of facet arthroplasty: a comparison of L5-S1 and L3-L4 levels. SpineWeek 2008, Geneva, Switzerland, May 26-31, 2008.

  82. Martin S, Ghanayem AJ, Tzermiadianos MN, Voronov LI, Havey RM, Renner SM, Carandang G, Abjornson C, Patwardhan AG. Kinematics of Cervical Total Disc Replacement Adjacent to a Two-Level, Straight vs. Lordotic Fusion. Spine Arthroplasty Society Annual Meeting, Miami, Fl, May 5-9, 2008.

  83. Voronov L, Havey R, Rosler D, Sjovold S, Rogers S, Carandang G, Ochoa J, Patwardhan G. Kinematics of Facet Arthroplasty: A Comparison of L5-S1 and L3-L4 Levels. Spine Arthroplasty Society Annual Meeting, Miami, Fl, May 5-9, 2008.

  84. Gaffey J, Ghanayem A, Voronov M, Havey R, Sartori M, Carandang G, Abjornson C, Patwardhan A. Prodisc-L Prosthesis Height: What Effect Does Increasing Height Have on Lumbar Spine Kinematics and Foraminal Size? Spine Arthroplasty Society Annual Meeting, Miami, Fl, May 5-9, 2008.

  85. Martin S, Ghanayem A, Voronov L, Havey R, Renner S, Carandang G, Patwardhan A. Kinematics of Cervical Total Disc Replacement Adjacent to a Two-Level, Straight Vs. Lordotic Fusion. Annual Meeting of the American Academy of Orthopaedic Surgeons, San Francisco, CA, March 5-9, 2008.

  86. Patwardhan A, Tzermiadianos M, Voronov L, Renner S, Carandang G, Havey R. Quality and Quantity of Motion of the Cervical Spine after Total Disc Replacement Using a Compressible Six-Degree-of-Freedom Prosthesis. Orthopaedic Research Society, San Francisco, CA. March 2-5, 2008.

  87. Lee M, Dumonski M, Phillips F, Voronov L, Renner S, Carandang G, Havey R, Patwardhan A. Disc Replacement adjacent to previous cervical fusion: A Biomechanical Comparison of Hybrid Construct vs. Two-Level Fusion. Orthopaedic Research Society, San Francisco, CA. March 2-5, 2008.

  88. Patwardhan A, Carandang G, Havey R, Voronov L, Renner S, Tzermiadianos M. Validation of a Numerical Method to Predict Post-Fusion Motion Compensation under Displacement-Control Condition using Load-Control Flexibility Test. Orthopaedic Research Society, San Francisco, CA. March 2-5, 2008.

  89. Gaffey J, Ghanayem A, Voronov M, Havey R, Sartori M, Carandang G, Abjornson C, Patwardhan A. Effect of Increasing Prodisc-L Prosthesis Height On Lumbar Spine Kinematics and Foraminal Size. 54th Annual Meeting Orthopaedic Research Society, Francisco, CA, March 2-5, 2008.

  90. Tzermiadianos M, Voronov L, Renner S, Havey R,   Carandang G, Zindrick M, Hadjipavlou A,  Patwardhan A. Effects of Retained Annular Fibers on the Kinematics of Cervical Disc Arthroplasty. CSRS Annual Meeting, San Francisco, CA, Nov. 29 – December 1, 2007.

  91. Patwardhan A, Tzermiadianos M, Voronov L, Renner S, Carandang G,  Havey R. Effect of Cervical Disc Prosthesis Placement Variability in the Sagittal Plane on the Kinematics of Implanted Segments. CSRS Annual Meeting, San Francisco, CA, Nov. 29 – December 1, 2007.    

  92. Lee M, Dumonski M, Phillips F, Voronov L, Renner S, Carandang G, Havey R, Patwardhan A. Disc Replacement Adjacent to Previous Cervical Fusion: A Biomechanical Comparison of Hybrid Construct vs. Two-Level Fusion. CSRS Annual Meeting, San Francisco, CA, Nov. 29 – December 1, 2007.

  93. Tzermiadianos M, Voronov L, Renner S, Carandang G, Havey R. Patwardhan. Effect of Cervical Disc Prosthesis Placement Variability in the Sagittal Plane on the Kinematics of Implanted Segments. CSRS Annual Meeting, San Francisco, CA, Nov. 29 – December 1, 2007.    

  94. Tzermiadianos M, Voronov L, Renner S, Carandang G, Havey R, Fleischer S, Geisler F, Lauryssen C, Cappuccino A, Khoo L, Patwardhan A. Total Posterior Arthroplasty System (the Modular TOPS system) after Complete Laminectomy and Facetectomy: Biomechanical Evaluation. ISSLS Annual Meeting, Honk Kong, June 12-16, 2007. 

  95. Tzermiadianos M, Mekhail A, Zook J, Voronov L, Havey R, Renner S, Carandang G, Abjornson C, Patwardhan A. Enhancing the Stability of Anterior Lumbar Interbody Fusion - A Comparison of Anterior vs. Posterior Tension bands. ISSLS Annual Meeting, Honk Kong, June 12-16, 2007. 

  96. Tzermiadianos M, Voronov L, Renner S, Carandang G, Havey R, Fleischer S, Geisler F, Lauryssen C, Cappuccino A, Khoo L, Patwardhan A. Biomechanical Evaluation of Total Posterior Arthroplasty System (the Modular TOPS system) after Complete Laminectomy and Facetectomy in the Lumbar Spine. Spine Arthroplasty Society Annual Meeting, Berlin, Germany, May 1-5, 2007.

  97. Garcia M, Tzermiadianos M, Ghanayem A, Voronov L, Rinella A, Carandang G, Abjornson C, Havey R, Patwardhan A. Kinematics and Foraminal Size after TDR with Pro-C Artificial Disc: Does Size Matter? Spine Arthroplasty Society Annual Meeting, Berlin, Germany, May 1-5, 2007.

  98. Tzermiadianos M, Voronov L, Renner S, Carandang G, Havey R, Patwardhan A. Effect of Cervical Disc Prosthesis Placement in the Sagittal Plane on the Kinematics of Implanted Segments. Spine Arthroplasty Society Annual Meeting, Berlin, Germany, May 1-5, 2007.

  99. Patwardhan A, Tzermiadianos M, Voronov L, Renner S, Carandang G, Havey R. Quality and Quantity of Motion of Cervical Spine after Total Disc Replacement (TDR) Using a Novel Compressible Six-Degree-of-Freedom Prosthesis. Spine Arthroplasty Society Annual Meeting, Berlin, Germany, May 1-5, 2007.

  100. Snyder J, Tzermiadianos M, Voronov L, Ghanayem A, Rinella A, Carandang G, Renner S, Havey R, Dooris A, Patwardhan A. Effect of Uncovertebral Joint Excision on the Motion Response of Cervical Total Disc Replacement. Spine Arthroplasty Society Annual Meeting, Berlin, Germany, May 1-5, 2007.

  101. Phillips F, Tzermiadianos M, Voronov L, Havey R, Carandang G, Dooris A, Patwardhan A. Kinematics of two level cervical TDR on reconstructed and adjacent levels. Spine Arthroplasty Society Annual Meeting, Berlin, Germany, May 1-5, 2007.

  102. Patwardhan AG, Wharton N, Havey R, Carandang G, O’Leary P, Lorenz M, Nicolakis M, Voronov L, Zindrick M, Hipp J, Ghanayem A. Location and mobility of instantaneous centers of rotation in the intact lumbar spine – implications to design of lumbar disc prostheses. NASS Annual Meeting, Seattle, Washington, Sept 26-30, 2006.

  103. Lorenz M, O’Leary P, Nicolakis M, Ghanayem A, Voronov L, Zindrick M, Havey R, Carandang G, Patwardhan. AG.Adverse effect of suboptimal prosthesis placement on segmental motion after total disc replacement surgery in the lumbar spine: are the tolerance much lower than suggested? NASS Annual Meeting, Seattle, Washington, September 26-30, 2006.

  104. Garcia M, Ghanayem A, Tzermiadianos M, Voronov L, Cahill P, Rinella A, Carandang G, Abjornson C, Havey R, Patwardhan AG. Effect of cervical disc prosthesis height on kinematics and foraminal size. NASS Annual Meeting, Seattle, Washington, September 26-30, 2006.

  105. Phillips F, Voronov L, Tzermiadianos M, Havey R, Carandang G, Rosler D, Ochoa J, Patwardhan AG.Kinematics of total facet arthroplasty after complete laminectomy-facetectomy. NASS Annual Meeting, Seattle, Washington, September 26-30, 2006.

  106. O’Leary P, Lorenz M, Nicolakis M, Ghanayem A, Voronov L, Zindrick M, Havey R, Carandang G, Patwardhan A. Effect of Placement Variability in the Sagittal Plane on the Motion Response of Charité Total Disc Replacement under Physiologic Loads. Spine Across the Sea, Maui, Hawaii, July 23-27, 2006.

  107. Lorenz M, O’Leary P, Nicolakis M, Ghanayem A, Voronov L, Zindrick M, Havey R, Carandang G, Patwardhan A. Effect of placement variability on the motion response of total disc replacement under physiologic loads. International Society for the Study of the Lumbar Spine, Bergen, Norway, June, 13-17, 2006.

  108. Patwardhan A, Wharton N, Havey R, Carandang G, O’Leary P, Lorenz M, Nicolakis M, Voronov L, Zindrick M, Hipp J, Ghanayem A. Instantaneous centers of rotation of the intact lumbar spine and total disc replacement. International Society for the Study of the Lumbar Spine, Bergen, Norway, June, 13-17, 2006.

  109. Patwardhan A, Wharton N, Havey R, Carandang G, O’Leary P, Lorenz M, Nicolakis M, Voronov L, Zindrick M, Hipp J, Ghanayem A. Effect of total disc replacement on instantaneous centers of rotation of the lumbar spine. Spine Arthroplasty Society, Montreal, Canada, May 9-13, 2006.

  110. O’Leary P, Lorenz M, Nicolakis M, Ghanayem A, Voronov L, Fronczak S, Zindrick M, Havey R, Carandang G, Sartori M, Patwardhan A. Biomechanical Effect of Implant Position on the Function of Charité Total Disc Replacement (TDR). Mid-America Orthopaedic Association, San Antonio, TX, April 19-23, 2006.

  111. Patwardhan A, O’Leary P, Lorenz M, Nicolakis M, Ghanayem A, Voronov L, Fronczak S, Zindrick M, Havey R, Carandang G, Sartori M. Effect of Implant Placement on the Motion Response of Charité Total Disc Replacement (TDR) Under Physiologic Loads. American Academy of Orthopaedic Surgeons, Chicago, Illinois, March 22-26, 2006.

  112. O’Leary P, Nicolakis M, Lorenz M, Voronov L, Zindrick M, Ghanayem A, Havey R, Carandang G, Sartori M, Rinella AS, Patwardhan A. Charité total disc replacement (TDR): effect of implant position on lumbar segment range of motion and prosthesis motion patterns. Orthopedic Research Society, Chicago, IL, March 19-22, 2006.

  113. Lorenz M, Paxinos O, Ghanayem A, Zindrick M, Voronov L, Havey R, Carandang G, Patwardhan A. The Effect of Boner Graft Geometry on in Vitro Stability of a Single Level ACDF Construct. Cervical Spine Research Society, San Diego, CA, December 1-3, 2005.

  114. Patwardhan A, Gaitanis I, Cronsell C, Voronov M, Havey R, Carandang G, Sartori M, Phillips F, Zindrick M, Ghanayem A. Risk of Adjacent Vertebral Body Fractures After Balloon Kyphoplasty: A Biomechanical Study. Scoliosis Research Society, Miami, FL, October 26-30, 2005.

  115. O’Leary P, Lorenz M, Nicolakis M, Voronov L, Zindrick M, Ghanayem A, Havey R, Carandang G, Sartori M, Gaitanis I, Fronczak S, Patwardhan A. Response of Charité Total Disc Replacement under Physiologic Loads: Prosthesis Component Motion Patterns. North American Spine Society, Annual Meeting, Philadelphia, PA, September 27-30, 2005.

  116. Patwardhan A, Gaitanis I, Cronsell C, Voronov M, Havey R, Sartori M, Carandang G, Phillips F, Nicolakis M, Zindrick M, Ghanayem A. Biomechanics of subsequent vertebral body fractures after balloon kyphoplasty. World Spine III Meeting: Third Interdisciplinary Congress on Spine Care, Rio de Janeiro, Brazil, July 31-August 3, 2005.

  117. Patwardhan A, Gaitanis I, Cronsell C, Voronov M, Havey R, Carandang G, Sartori M, Phillips F, Zindrick M, Ghanayem A. Risk of adjacent vertebral body fractures after balloon kyphoplasty: a biomechanical study. International Society for the Study of the Lumbar Spine, New York, NY, May10-14, 2005.

  118. Gavin T, Carandang G, Kozinski A, Gavin C, Ghanayem A, Havey R, Patwardhan A. Biomechanical and Pulmonary Function Comparisons of Prefabricated Rigid, Prefabricated Soft, and Made-To-Measure Polyethylene Lumbar TLSO’s. International Society for the Study of the Lumbar Spine, New York, NY, May10-14, 2005.

  119. O’Leary P, Nicolakis M, Lorenz M, Voronov L, Zindrick M, Ghanayem A, Havey R, Carandang G, Sartori M, Fronczak S, Patwardhan A. Intervertebral and Intra-Prosthesis Motion after Total Disc Replacement (TDR) Using the Charité Artificial Disc. Spinal Arthroplasty Society Annual Meeting, New York, NY, May 3-7, 2005.

  120. Summers H, Gullickson M, Ghanayem A, Havey R, Voronov L, Carandang G, Patwardhan AG. Effect of cervical arthroplasty vs. fusion on the adjacent segment kinematics. Cervical Spine Research Society, 32nd Annual Meeting, Boston, MA, December 9-12, 2004.

  121. Patwardhan AG, Havey R, Voronov L, Carandang G, Gaitanis I, Ghanayem A, Sartori M, Lorenz M. Relaxation Response of Lumbar Segments Undergoing Disc Space Distraction: Implications to the Stability of Stand-Alone Anterior Lumbar Interbody Implants. Scoliosis Research Society, 39th Annual Meeting, Buenos Aires, Argentina, September 6-9, 2004.

  122. Havey RM, Voronov LI, Gaitanis I, Carandang G, Ghanayem A, Lorenz M, Patwardhan AG. Relaxation response of lumbar spine segments undergoing annular distraction: Implications to anterior lumbar interbody implant stability. International Society for the Study of the Lumbar Spine, Porto, Portugal, June 1-June 6, 2004.

  123. Phillips F, Voronov L, Gaitanis I, Carandang G, Havey R, Patwardhan AG. Biomechanics of Posterior Dynamic Stabilizing Device (DIAM). International Society for the Study of the Lumbar Spine, Porto, Portugal, June 1-June 6, 2004.

  124. Gaitanis I, Voronov L, Carandang G, Ghanayem A, Magovern B, Havey R, Zindrick M, Hadjipavlou A, Phillips F, Patwardhan AG. Effect of Kyphoplasty on Restoring Geometric and Loading Alignment in Thoracic Vertebral Compression Fractures. EuroSpine Meeting, Porto, Portugal, May 30-June 5, 2004.

  125. Gaitanis I, Voronov L, Ghanayem A, Carandang G, Havey R, Zindrick M, Phillips F, Hadjipavlou A, Patwardhan AG. Effect of balloon kyphoplasty on the restoration of spinal alignment in the treatment of vertebral compression fractures. Orthopedic Research Society, San Francisco, CA, March 7-10, 2004.

  126. Havey RM, Voronov LI, Gaitanis I, Carandang G, Ghanayem A, Lorenz M, Patwardhan AG. Relaxation response of lumbar spine segments undergoing annular distraction: Implications to anterior lumbar interbody implant stability. Orthopedic Research Society, San Francisco, CA, March 7-10, 2004.

  127. Paxinos O, Ghanayem A, Zindrick M, Voronov L, Lorenz M, Havey R, Patwardhan AG, Carandang G. The effect of ACDF with a locked plate on the kinematics of the adjacent proximal segment. 2nd Congress on Spine Care: World Spine II, Chicago, IL, August 10-13, 2003.

  128. Paxinos O, Ghanayem A, Zindrick M, Voronov L, Lorenz M, Havey R, Carandang G, Patwardhan AG. Complete ligamentous flexion distraction injury of the cervical spine is effectively stabilized by ACDF with a locked plate. 2nd Congress on Spine Care: World Spine II, Chicago, IL, August 10-13, 2003.

  129. Stanley S, Ghanayem A, , Patwardhan AG, Havey R, Voronov L, Paxinos O, Carandang G. A New Model for the Study of Thoracolumbar Fractures Under Preload. 2nd Congress on Spine Care: World Spine II, Chicago, IL, August 10-13, 2003.

  130. Paxinos O, Ghanayem A, Patwardhan AG, Voronov L, Carandang G, Zindrick M, Lorenz M, Havey R. Effect of Preload on Cervical Spine Kinematics. Spine Across the Sea, July 27-31, 2003, Maui, Hawaii.

  131. Stanley S, Ghanayem A, Voronov L, Havey R, Paxinos O, Carandang G, Patwardhan AG. Effect of Follower Preload on the Flexion-Extension Response of the Thoracolumbar Spine. Spine Across the Sea, July 27-31, 2003, Maui, Hawaii.

  132. Ghanayem A, Paxinos O, Voronov L, Havey R, Carandang G, Zindrick M, Lorenz M, Patwardhan AG. Complete Ligamentous Flexion-Distraction Injury of the Cervical Spine is Effectively Stabilized by ACDF with a Locked Plate. Spine Across the Sea, July 27-31, 2003, Maui, Hawaii.

  133. Stanley S, Ghanayem A, Voronov L, Havey R, Paxinos O, Carandang G, Patwardhan AG.: Effect of follower preload on the flexion-extension response of the thoracolumbar spine. International Society for the Study of the Lumbar Spine, 30th annual meeting, May 13-17, 2003, Vancouver, Canada.

  134. Paxinos O, Ghanayem A, Voronov L, Zindrick M, Havey R, Lorenz M, Carandang G, Patwardhan AG. Complete ligamentous flexion distraction injury of the cervical spine is effectively stabilized by ACDF with a locked plate. American Spinal Injury Association, Annual Meeting, Miami, Florida, April 4-6, 2003.

  135. Ghanayem A, Paxinos O, Voronov L, Carandang G, Zindrick M, Lorenz M, Havey R, Patwardhan AG.: Complete flexion-distraction injury of the cervical spine can be effectively stabilized by ACDF with a locked plate. Accepted for presentation at the Cervical Spine Research Society, 13th Annual Meeting, Miami, Florida, December 5-7, 2002.

  136. Paxinos O, Ghanayem A, Patwardhan AG, Voronov L, Carandang G, Zindrick M, Lorenz M, Havey R.: Effect of preload on cervical spine kinematics. Accepted for presentation at the Cervical Spine Research Society, 13th Annual Meeting, Miami, Florida, December 5-7, 2002.

  137. Paxinos O, Patwardhan AG, Havey R, Voronov L, Zindrick M, Lorenz M, Carandang G, Ghanayem A.: A Laboratory Model to Simulate the Effect of Gz Forces on Fighter Pilot Cervical Spines. Cervical Spine Research Society, 13th Annual Meeting, Miami, Florida, December 5-7, 2002.

  138. Zindrick M, Patwardhan AG, Ghanayem A, Lee S, Havey R, Carandang G, Voronov L, Hodges S, Simonds J, Phillips F, Meade K, Gavin T.: Biomechanical Comparison of Interbody Fusion Constructs for the Degenerative Lumbar Spine. AOA Annual Meeting, Victoria, British Columbia, Canada. June 1-4, 2002.

  139. Patwardhan AG, Carandang G, Lee S, Paxinos O, Ghanayem A, Cunningham B, Phillips F, Voronov L, Havey R, Simonds J, Meade K, Lim T, Gavin T, Zindrick M.: Effect of Compressive Preload on the Stability of Different Cage Constructs. International Research Society of Spinal Deformities, 4th Annual Meeting, Athens, Greece, May 24-27, 2002.

  140. Zindrick M, Patwardhan AG, Ghanayem A, Lee S, Havey B, Carandang G, Voronov L, Hodges S, Simonds J, Phillips F, Meade K, Gavin T.: Biomechanical Comparison of Interbody Fusion Constructs for the Degenerative Lumbar Spine. Association of Bone and Joint Surgeons Annual Meeting, Vancouver, British Columbia, Canada. May 15-19, 2002.

  141. Patwardhan A, Carandang G, Ghanayem A, Cunningham B, Phillips F, et al.: Effect of Compressive Preload on the ALIF Cage Construct Stability. Sixteenth Annual meeting of the North American Spine Society, October 31-November 3, 2001, Seattle, Washington.

  142. Cunningham B, Phillips F, Patwardhan A, Carandang G, Voronov L, et al. Anterior Lumbar Interbody Cage Constructs- Does Size Matter? Annual meeting of the International Society for the Study of the Lumbar Spine, June 19-23, 2001, Edinburgh, Scotland.

  143. Patwardhan A, Carandang G, Ghanayem A, Voronov L, Havey R, Phillips F, Cunningham B, Simonds J, Meade K, Lim T, Gavin T, Zindrick M. Effect of compressive preload on the response of the anterior lumbar interbody fusion cage construct and adjacent segments. Presented at the annual meeting of the International Society for the Study of the Lumbar Spine, June 19-23, 2001, Edinburgh, Scotland.

  144. Phillips F, Cunningham B, Patwardhan A, Havey R, Voronov L, Carandang G, Meade K, Wetzel F, Simonds J, Kachar S. Translaminar facet screws improve stability of threaded anterior lumbar interbody cage constructs. Presented at the annual meeting of the International Society for the Study of the Lumbar Spine, June 19-23, 2001, Edinburgh, Scotland.

  145. Patwardhan A, Carandang G, Ghanayem A, Voronov L, Havey R, Phillips F, Cunningham B, Simonds J, Meade K, Lim T, Gavin T, Zindrick M. Effect of compressive preload on the response of the anterior lumbar interbody fusion cage construct and adjacent segments. 47th annual meeting of the Orthopaedic Research Society, February 2001, San Francisco, California.

 

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