PUBLICATIONS

Peer-Reviewed Journal Articles      Book Chapters      Conference Abstracts and Presentations

 

Peer-Reviewed Journal Articles

 

  1. 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. [abstract link]

  2. 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. [abstract link]

  3. 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. [abstract link]

  4. 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]

  5. Robertson PA, Tsitsopoulos PP, Voronov LI, Havey RM, Patwardhan AG. Biomechanical Investigation of a Novel Integrated Device for Intra-Articular Stabilization of the C1-C2 (Atlantoaxial) Joint. Spine J. 2012 Feb;12(2):136-42. Epub 2012 Feb 15. [abstract link]

  6. 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. [abstract link]

  7. 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.

  8. 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. [abstract link]

  9. 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. [abstract link]

  10. 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. [abstract link]

  11. 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. [abstract link]

  12. Paxinos O, Tsitsopoulos PP, Zindrick MR, Voronov LI, Lorenz MA, Havey RM, Patwardhan AG. Evaluation of pullout strength and failure mechanism of posterior instrumentation in normal and osteopenic thoracic vertebrae. J Neurosurg Spine. 2010 Oct;13(4):469-76. [abstract link]

  13. 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. [abstract link]

  14. 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. [abstract link]

  15. 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. [abstract link]

  16. 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. [abstract link]

  17. 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. [full text link]

  18. 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. [full text link]

  19. 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. [abstract link]

  20. Tzermiadianos MN, Renner SM, Phillips FM, Hadjipavlou AG, Zindrick MR, Havey RM, Voronov M, Patwardhan AG. Altered disc pressure profile after an osteoporotic vertebral fracture is a risk factor for adjacent vertebral body fracture. Eur Spine J. 2008 Nov;17(11):1522-30. [abstract link]

  21. 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. [abstract link]

  22. Kurtz SM, Patwardhan AG, MacDonald D, Ciccarelli L, van Ooij A, Lorenz M, Zindrick M, O'Leary P, Isaza J, Ross R. What is the correlation of in vivo wear and damage patterns with in vitro TDR motion response? Spine. 2008 Mar 1;33(5):481-9. [full text link]

  23. Forsythe K, Freedman KB, Stover MD, Patwardhan AG. Comparison of a Novel FiberWire-Button Construct versus Metallic Screw Fixation in a Syndesmotic Injury Model. Foot Ankle Int. 2008 Jan;29(1):49-54. [abstract link]

  24. Bowden AE, Guerin HL, Villarraga ML, Patwardhan AG, Ochoa JA. Quality of motion considerations in numerical analysis of motion restoring implants of the spine. Clin Biomech (Bristol, Avon). 2008 Feb 5. [abstract link]

  25. 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. [abstract link]

  26. 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. [abstract link]

  27. Serhan H, Varanas G, Dooris A, Patwardhan AG, Tzermiadianos MN. Biomechanics of the posterior lumbar articulating elements. Neurosurgery Focus 2007;22(1):E1. [abstract link]

  28. 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. [abstract link]

  29. Cambron JA, Gudavalli MR, Hedeker D, McGregor M, Jedlicka J, Keenum M, Ghanayem AJ, Patwardhan AG, Furner SE. One-year follow-up of a randomized clinical trial comparing flexion distraction with an exercise program for chronic low-back pain. J Altern Complement Med. 2006 Sep;12(7):659-68. [abstract link]

  30. 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. [abstract link]

  31. Cambron JA, Gudavalli M, McGregor M, Jedlicka J, Keenum M, Ghanayem AJ, Patwardhan AG, Furner SE. Amount of health care and self-care following a randomized clinical trial comparing flexion-distraction with exercise program for chronic low back pain. Chiropr Osteopat 2006 Aug 24;14:19. [abstract link]

  32. Renner SM, Natarajan RN, Patwardhan AG, Havey RM, Voronov LI, Guo BY, Andersson GB, An HS. Novel model to analyze the effect of a large compressive follower pre-load on range of motions in a lumbar spine. J Biomech. 2006 Jul 13. [abstract link]

  33. Goel VK, Panjabi MM, Patwardhan AG, Dooris AP, Serhan H. Test Protocols for Evaluation of Spinal Implants. J Bone Joint Surg 2006;88-A (suppl. 2):103-109. [abstract link]

  34. Callaci JJ, Juknelis D, Patwardhan AG, Wezeman FH. Binge Alcohol Treatment Increases Vertebral Bone Loss Following Ovariectomy: Compensation by Intermittent Parathyroid Hormone. Alcoholism: Clinical and Experimental Research 2006;30 (4):665-672. [abstract link]

  35. Oakey JW, Stover MD, Summers HD, Sartori M, Havey RM, Patwardhan AG. Does screw configuration affect subtrochanteric fracture after femoral neck fixation? Clin Orthop Rel Res 2006;443:302-6. [abstract link]

  36. Gudavalli MR, Cambron JA, McGregor M, Jedlicka J, Keenum M, Ghanayem A, Patwardhan AG. A Randomized Clinical Trial and Subgroup Analysis to Compare Flexion-Distraction with Active Exercise for Chronic Low Back Pain:  A Feasibility Study. Eur Spine J 2005 Dec 8;1-13. [abstract link]

  37. O’Leary P, Lorenz M, 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. [abstract link]

  38. Patwardhan AG, Tzermiadianos MN. Biomechanics of vertebral body augmentation. Advances in Osteoporotic Fracture Management 2005;4(2):34-39.

  39. King D, Chase J, Havey RM, Voronov L, Sartori M, McEwen HA, Beamer WG, Patwardhan AG. Effects of Growth Hormone Transgene Expression on Vertebrae in a Mouse Model of Osteogenesis Imperfecta. Spine 2005;30:1491-1495. [abstract link]

  40. Noonan T, Paxinos O, Pinzur MS, Havey RM, Patwardhan AG. Tibiotalocalcaneal Arthrodesis with a Retrograde Intramedullary Nail: A Biomechanical Analysis of the Effect of Nail Length. Foot and Ankle International 2005; 26 (4):304-308. [abstract link]

  41. 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. [abstract link]

  42. Dooris A, Voronov L, Havey R, Patwardhan AG. The Effect of Fixed Center of Rotation Disc Implantation on Motion Segment Load Sharing: A Pilot Study. Roundtables in Spine Surgery. Spine Biomechanics, 2005; 1(1):31-37.

  43. Gaitanis IN, Hadjipavlou AG, Katonis PG, Kontakis GM, Tzermiadianos MN, Saper LM, Patwardhan AG. Balloon Kyphoplasty for the Treatment of Pathological Vertebral Compressive Fractures. European Spine Journal, 2004 October 8 (Epub). [abstract link]

  44. 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. [abstract link]

  45. 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. [abstract link]

  46. Callaci JJ, Juknelis D, Patwardhan AG, Sartori M, Frost N, Wezeman FH. The Effects of Binge Alcohol Exposure on Bone Resorption and Biomechanical and Structural Properties are Offset by Concurrent Bisphosphonate Treatment. Alcoholism: Clin and Experimental Res, 28 (1):182-91, 2004. [abstract link]

  47. 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 Rehab Research and Development, 40 (6): 527-38, 2003. [full text link]

  48. 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. [abstract link]

  49. 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. [abstract link]

  50. Patwardhan AG, Ghanayem A, Simonds J, Hodges S, Voronov L, Paxinos O, Havey R. An Experimental Model of Adult-Onset Slip Progression in Isthmic Spondylolisthesis. Stud Health Technol Inform, 2002;91:322-4. [abstract link]

  51. Natarajan RN, Andersson GBJ, Patwardhan AG, Verma S. Effect of Annular Incision Type on the Change in Biomechanical Properties in a Herniated Lumbar Intervertebral Disc. J Biomechanical Engineering, 124:229-236, 2002. [abstract link]

  52. Havey RM, Gavin TM, Patwardhan AG, Pawelczak SB, Ibrahim KN. A Reliable and Accurate Method of Measuring Orthosis-Wearing Compliance. Spine, 27(2):211-214, 2002. [abstract link]

  53. Buranosky DJ, Taylor DT, Sage RA, Sartori M, Patwardhan AG, Phelan M, Lam AT. First Metatarsophalangeal Joint Arthrodesis: Quantitative Mechanical Testing of Six-Hole Dorsal Plate Versus Crossed Screw Fixation in Cadaveric Specimens. J Foot and Ankle Surgery, 40(4):208-213, 2001. [abstract link]

  54. Patwardhan AG, Lee B, Meade KP. Frontal Plane Response of the Lumbar Spine Subjected to a Follower Load – Role of Muscles. J. Biomechanical Engineering, 123:212-217, 2001. [abstract link]

  55. Pinzur MS, Patwardhan AG, Havey RM. Healing of Partial Flap Necrosis in Ankle Disarticulation Amputation by Debridement and Continued Weight-Bearing. The American Journal of Orthopaedics, pp. 396-397, 2001. [abstract link]

  56. Humphreys SC, Hodges SD, Patwardhan AG, Eck JC, Murphy RB, Covington LA. Comparison of Posterior and Transforaminal Approaches in Performing Lumbar Interbody Fusion. Spine, 26(5):567-71, 2001. [abstract link]

  57. Zindrick MR, Knight GW, Sartori MJ, Carnevale TJ, Patwardhan AG, Lorenz MA. Pedicle Morphology of the Immature Thoracolumbar Spine. Spine, 25 (21):2726-2735, 2000. [abstract link]

  58. Umehara S, Zindrick MR, Patwardhan AG, Havey RM, Vrbos L, Knight G, Miyano S, Kirincic M, Kaneda K, Lorenz M. The Biomechanical Effect of Postoperative Hypolordosis in Instrumented Lumbar Fusion on Instrumented and Adjacent Spinal Segments. Spine, 25 (13):1617-24, 2000. [abstract link]

  59. Patwardhan AG, Havey RM, Ghanayem AJ, Diener H, Meade KP, Dunlap, B, Hodges SD. Load Carrying Capacity of the Human Cervical Spine in Compression is Increased Under a Follower Load. Spine, 25 (12):1548-1554, 2000. [abstract link]

  60. Patwardhan AG, Parnianpour M, Meade KP, Rizza R, Li S. Effect of Spinal Musculature on the Mechanics of the Lumbar Spine. Biomed Eng-Applications, Basis & Communications, 11:249-258, 1999. [abstract link]

  61. Lim TH, Patwardhan AG, Hong JH, An HS, Riley LH, Hodges S, Zindrick MR. Effect of Instrumented Lumbar Fusion on the Flexibility and Viscoelastic Properties of the Adjacent Segment: An In Vivo Canine Study. J. Musculoskeletal Research 3(2):125-136, 1999. [abstract link]

  62. Natarajan RN, Andersson GBJ, Patwardhan AG, Andriacchi TP. Study on the Effect of Graded Facetectomy on Change in Lumbar Motion Segment Torsional Flexibility Using Three Dimensional Continuum Contact Representation for Facet Joints. J Biomechanical Engineering, 121:215-221, 1999. [abstract link]

  63. Khan T, Havey RM, Sayers ST, Patwardhan AG, King WW. Animal Models of Spinal Cord Injuries. Laboratory Animal Science, 49(2):161-172, 1999.

  64. Patwardhan AG, Havey RM, Meade KP, Lee B, Dunlap B. A Follower Load Increases the Load Carrying Capacity of the Lumbar Spine in Compression. Spine, 24(10):1003-1009, 1999. [abstract link]

  65. Steinke B, Patwardhan AG, Havey R, King D. Human Growth Hormone Transgene Expression Increases the Biomechanical Structural Properties of Mouse Vertebrae. Spine, 24(1):1-4, 1999. [abstract link]

  66. Payette CR, Sage RA, Gonzalez JV, Sartori M, Patwardhan AG, Vrbos L. Triple Arthrodesis Stabilization: A Quantitative Analysis of Screw Versus Staple Fixation in Fresh Cadaveric Matched-Pair Specimens. J Foot and Ankle Surgery, 37(6):472-480, 1998. [abstract link]

  67. Katagiri K, Tadano S, Ukai T, Patwardhan AG, Havey RM, Ghanayem AJ. Measurement of Intradiscal Pressure Response in Low-Frequency Cyclic Loading. Transactions of the Japan Society of Mechanical Engineers, 64:2429-2434, 1998.

  68. Humphreys SC, Chase J, Patwardhan AG, Shuster J, Lomasney L, Hodges S. Flexion and Traction Effect on C5-C6 Foraminal Space. Arch of Phys Med and Rehab, 79:1105-1109, 1998. [abstract link]

  69. Humphreys SC, Hodges S, Patwardhan AG, Eck JC, Shepard LC, Sartori M. The Natural History of the Cervical Foramen in Both Symptomatic and Asymptomatic Individuals as Measured by MRI. Spine, 23:2180-2184, 1998. [abstract link]

  70. Wang JL, Parnianpour M, Shirazi-Adl A, Engin AE, Li S, Patwardhan AG. Development and Validation of a Viscoelastic Finite Element Model of an L2/L3 Motion Segment. Theoretical and Applied Fracture Mechanics,  28:81-93, 1997. [abstract link]

  71. Andreshak JL, Rabin SI, Patwardhan AG, and Wezeman FH.  Tibial Segmental Defect Repair: Chondrogenesis and Biomechanical Strength Modulated by Basic Fibroblast Growth Factor.  Anatomical Record,  248:198-204, 1997. [abstract link]

  72. Saban J, Zussman MA, Havey R, Patwardhan AG, Schneider GB, and King D.  Heterozygous OIM Mice Exhibit a Mild Form of Osteogenesis Imperfecta. Bone, 19(6):575-579, 1996. [abstract link]

  73. Patwardhan AG, Gavin TM, Bunch WH, Dvonch VM, Vanderby R, Meade KP, and Sartori M. A Biomechanical Comparison of the Milwaukee Brace (CTLSO) and the TLSO for the Treatment of Idiopathic Scoliosis.  J Prosthetics and Orthotics,   8(4):115-122, 1996. [full text link]

  74. Patwardhan AG, Rimkus A, Gavin TM, Bueche M, Meade KP, Bielski R, and Ibrahim K. Geometric Analysis of Coronal Decompensation in Idiopathic Scoliosis. Spine, 21(10):1192-1200, 1996. [abstract link]

  75. Havey RM, Gavin TM, Patwardhan AG, and Meade KP. Methodology-Measurements, Part II: Instrumentation and Apparatus.  J Prosthetics and Orthotics,  8(2):50-64, 1996. [full text link]

  76. Pinzur MS, Cox W, Kaiser J, Morris T, Patwardhan AG, and Vrbos L. The Effect of Prosthetic Alignment on Relative Limb Loading in Persons with Trans-tibial Amputation: A Preliminary Report.  J Rehabilitation Research and Development,  32(4):373-378, 1995. [abstract link]

  77. Slosar P, Patwardhan AG, Lorenz M, Havey R, and Sartori M. Instability of the Lumbar Burst Fracture and Limitations of Transpedicular Instrumentation.  Spine,   20:1452-1461, 1995. [abstract link]

  78. Li S, Patwardhan AG, Amirouche F, Havey R, and K. Meade. Limitations of the Standard Linear Solid Model of Intervertebral Discs Subject to Prolonged Loading and Low-Frequency Vibrations in Axial Compression.  J Biomechanics,   28(7):779-790, 1995. [abstract link]

  79. Miller JM, Stuck R, Sartori M, Patwardhan AG, Cane R, Vrbos L. The Inverted Z Bunionectomy: Quantitative Analysis of the Scarf and Inverted Scarf Bunionectomy Osteotomies in Fresh Cadaveric Matched Pair Specimens.  J Foot and Ankle Surgery,  33(5):455-462, 1994. [abstract link]

  80. Amirouche FML, Xie M, Patwardhan AG. Optimization of the Contact Damping and Stiffness Coefficients to Minimize Human Body Vibration. J Biomechanical Engineering,  116(4):413-420, 1994. [abstract link]

  81. Rabinowitz R, Light T, Havey R, Gourineni P, Patwardhan AG, Sartori M, Vrbos L. The Role of the Interosseous Membrane and Triangular Fibrocartilage Complex (TFCC) in Forearm Stability.  J  Hand Surgery,   19A (3):385-393, May 1994. [abstract link]

  82. Hsu ES, Patwardhan AG, Meade KP, Light TR, Martin WR. Cross-Sectional Geometrical Properties and Bone Mineral Contents of the Human Radius and Ulna.  J Biomech, 26(11):1307-18, 1993. [abstract link]

  83. Pinzur MS, Smith D, Tornow D, Meade K, Patwardhan AG. Gait Analysis of Dysvascular Below-Knee and Contralateral Through-Knee Bilateral Amputees: A Preliminary Report.  Orthopedics, 16(8):875-879, 1993. [abstract link]

  84. Gavin TM, Boscardin JB, Patwardhan AG, Bunch WH, Zindrick MR, Lorenz MA, Vrbos LA. Preliminary Results of Orthotic Treatment for Chronic Low Back Pain.  J Prosthetics and Orthotics,   5(1):25-29, 1993. [full text link]

  85. Perona PG, Lawrence J, Paprosky W, Patwardhan AG, Sartori M, Morales S. Acetabular Micromotion as a Measure of Initial Implant Stability in Primary Hip Arthroplasty. An In Vitro Comparison of Different Methods of Initial Acetabular Component Fixation.  J Arthroplasty, 7(4):537-47, 1992. [abstract link]

  86. Chang H, Gilbertson LG, Goel VK, Winterbottom JM, Clark CR, Patwardhan AG. Dynamic Response of the Occipito-Atlanto-Axial (C0-C1-C2) Complex in Axial Rotation.  J Orthopaedic Research, 10(3):446-453, May 1992. [abstract link]

  87. Pinzur MS, Schumacher D, Reddy N, Osterman H, Havey R, Patwardhan AG. Preventing Heel Ulcers: A Comparison of Prophylactic Body-Support Systems.  Archives of Physical Medicine and Rehabilitation, 72:508-510, June 1991. [abstract link]

  88. Pinzur MS, Perona P, Patwardhan AG, Havey R. Loading of the Contralateral Foot in Peripheral Vascular Insufficiency Below-Knee Amputees.  Foot and Ankle, 11(6):368-371, 1991. [abstract link]

  89. Patwardhan AG, Li S, Gavin TM, Lorenz MA, Meade KP, Zindrick M. Orthotic Stabilization of Thoracolumbar Injuries.  A Biomechanical Analysis of the Jewett Hyperextension Orthosis.  Spine, 15(7):  654-661, July 1990. [abstract link]

  90. Apel DM, Patwardhan AG, Pinzur, MS, Dobozi WR. Axial Loading Studies of Unstable Intertrochanteric Fractures of the Femur. Clin Orthop and Related Res,  246:156-64, September 1989. [abstract link]

  91. Blevens AD, Light TR, Jablonsky W, Smith D, Patwardhan AG, Guay M, Woo T. Radiocarpal Articular Contact Characteristics with Scaphoid Instability. J Hand Surgery,  14A:781-90, Sept 1989. [abstract link]

  92. Stuck RM, Moore JW, Patwardhan AG, Sartori MJ. Forces Under the Hallux Rigidus Foot with Surgical and Orthotic Intervention. J American Podiatric Medical Association, 78(9):465-468, 1988. [abstract link]

  93. Meade KP, Bunch WH, Vanderby R, Patwardhan AG, Knight GW. Progression of Unsupported Curves in Adolescent Idiopathic Scoliosis. Spine, 12(6):520-6, 1987. [abstract link]

  94. Hitchcock T, Light T, Bunch WH, Knight GW, Sartori M, Patwardhan AG, Hollyfield R. Effect of Immediate Controlled Digital Motion on the Strength of Flexor Tendon Repairs.  J Hand Surgery, Vol 12A, No.4, pp. 590-595, 1987. [abstract link]

  95. Zindrick MR, Wiltse LL, Doornik A, Widell EH, Knight GW, Patwardhan AG, Thomas JC. Analysis of the Morphometric Characteristics of the Thoracolumbar Pedicles. Spine, 12(2):160-6, 1987. [abstract link]

  96. Vanderby R, Daniele M, Patwardhan AG, Bunch WH. A Method for Identification of In Vivo Segmental Stiffness Properties of the Spine. J Biomech Eng, Vol 108, pp. 312-316, November 1986. [abstract link]

  97. Patwardhan AG, Bunch WH, Meade K, Vanderby R, Knight GW. A Biomechanical Analog of Curve Progression and Orthotic Stabilization in Idiopathic Scoliosis. J Biomechanics, 19(2):103-17, 1986. [abstract link]

  98. Bunch WH, Patwardhan AG, Dvonch VM. A Mechanism of Action of Spinal Orthoses.  J Association of Children's Prosthetic-Orthotic Clinics,  18(5): 7-10, Winter 1983. [full text link]

  99. Vanderby R, Patwardhan AG. Computers in Rehabilitative Biomechanics. Association of Computing Machinery  SigCAPH Quarterly, Number 3; pp 16-26, Winter 1983.

  100. Lorenz M, Patwardhan AG, Vanderby R. Load Bearing Characteristics of Lumbar Facets in Normal and Surgically Altered Spinal Segments. Spine, 8:122-130, 1983. Volvo Award. [abstract link]

  101. Patwardhan AG, Soni AH, Sullivan JA, Gudavalli MR, Srinivasan V. Kinematic Analysis and Simulation of Vertebral Motion Under Static Load- Part II: Simulation Study. J Biomechanical Engineering, 104:112-118, May 1982. [abstract link]

  102. Soni AH, Sullivan JA, Patwardhan AG, Gudavalli MR, Chitwood J. Kinematic Analysis and Simulation of Vertebral Motion Under Static Load- Part I: Kinematic Analysis. J Biomechanical Engineering, 104: 105-111, May 1982. [abstract link]

  103. Patwardhan AG, Soni AH. Motion Simulation of an Articulated Robotic Arm Subjected to Static Forces.  J Mechanical Design, 104: 494-503, 1982.

  104. Patwardhan AG, Soni A, Sullivan J. A General Method to Locate a Body in 3-D Space using X-ray Exposure in Two Oblique Planes. Mechanisms and Machine Theory, 16:459-461, 1981.

  105. Patwardhan AG, Soni AH, Sullivan JA. Technology Transfer in Biokinematics of the Human Spine. J Mechanical Design, 101: 594-603, October 1979.

  106. Patwardhan AG, Soni AH. Synthesis of a Planar Four-Bar Crank-Rocker Mechanism with Elastic Links.  ASME Paper No. 76-DET-73, 1976.

 

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Book Chapters

 

  1. Patwardhan AG, Gaitains I, Voronov LI: Biomechanics of the Spine. In Spivak JM and Connolly PJ, Eds., Orthopaedic Knowledge Update- Spine 3, Chapter 3, pp. 25-34, American Academy of Orthopaedic Surgeons, 2006.

  2. Gavin TM, Patwardhan AG, Ghanayem A and Rinella A: Spinal Orthotics. In Lusardi and Nielson Eds. Orthotics and Prosthetics in Rehabilitation; 2nd Edition, Chapter 85  Butterworth-Heinemann Publishers, Newton, Massachusetts. 2005.

  3. Gavin TM, Bunch WH, Patwardhan AG, Meade KP and Shurr DG: Orthotic Treatment for Spinal Disorders. In Weinstein SL, Ed., The Pediatric Spine, 2nd Edition, Chapter 52. Lippincott-Williams and Wilkins. pp. 895-919. Baltimore, Maryland. 2001.

  4. Flanagan PF, Gavin TM, Patwardhan AG, Gavin DQ: Spinal Orthoses. Chapter 14, In Lusardi and Nielson Eds. Orthotics and Prosthetics in Rehabilitation. Butterworth-Heinemann Publishers, Newton, Massachusetts, June 2000.

  5. Gavin TM, Patwardhan AG, Levine PD, Gavin DQ, Fenwick L:  Principles and Components of Spinal Orthoses.  in Atlas of Orthotics , C.V. Mosby, pp. 155-194, 1997.

  6. Lorenz M and Patwardhan AG:  The Three-Joint Complex.  in The Lumbar Spine, Second edition, W. B. Saunders Company, Philadelphia, Vol. 1, pp. 52-57, 1996.

  7. Gavin TM, Shurr DG, Patwardhan AG:  Orthotic Treatment for Spinal Disorders.  in Pediatric Spine,  S. Weinstein, Ed., Ravin Press, Vol. 2, pp. 1795-1828, 1994.

  8. Patwardhan AG, Gavin TM, Slosar PJ, and Lorenz MA:  Biomechanics of Implants and Orthoses for Thoracolumbar Injuries.  in Spine: State of the Art Reviews, Hanley and Belfus, Inc., Philadelphia, Vol. 7, No. 2, pp. 261-280, 1993.

  9. Patwardhan AG, Bunch WH, Dvonch VM, Gavin TM, and Goel V: Biomechanics of Adolescent Idiopathic Scoliosis- Natural History and Treatment. in Biomechanics of the Spine- Clinical and Surgical Perspective, V.K. Goel and J.N. Weinstein, Eds., CRC Press, pp. 251-285, 1990.

  10. Goel V, Weinstein J, and Patwardhan AG:  Biomechanics of Intact Ligamentous Spine. in Biomechanics of the Spine- Clinical and Surgical Perspective,  V.K. Goel and J.N. Weinstein, Eds., CRC Press, pp. 97-156, 1990.

  11. Lorenz M, Patwardhan AG, and Zindrick M:  Instability and Mechanics of Implants and Braces for Thoracic and Lumbar Fractures.  in Spinal Trauma, T. Erico, Ed., J. B. Lippincott and Co., pp. 271-280, 1990.

  12. Vanderby R, Patwardhan AG, Meade KP, and Bunch WH:  Spinal Stability in Adolescent Idiopathic Scoliosis.  in Computational Methods in Bioengineering,  R. L. Spilker and B. R. Simon, Eds., pp. 411-425, 1988.

  13. Patwardhan AG, Vanderby R, Knight GW, Gogan W, Levine P:  Biomechanics of the Spine.  Chapter 7.  Atlas of Orthotics - Biomechanical Principles and Application, The C.V. Mosby Company, St. Louis, 1985, pp 139-150.

 

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Conference Abstracts and Presentations

 

  1. 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.

  2. 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.

  3. Havey R, Potluri T, Goodsitt J, Hannon S, Voronov L, McIntosh B, Zindrick M, Phillips F, Tsitsopoulos P, Patwardhan A. Does disc arthroplasty alter cervical facet engagement? A combinatorial approach using experimental data and 3-D CT Model. Cervical Spine Research Society Annual Meeting, Chicago, IL, December 6-8, 2012.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. 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.

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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.

  20. 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.

  21. 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.

  22. 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.

  23. 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.

  24. 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.

  25. 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.

  26. 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.

  27. 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.

  28. 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.

  29. 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.

  30. 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.

  31. 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.

  32. 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.

  33. 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.

  34. 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.

  35. 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.

  36. 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.

  37. 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.

  38. 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.

  39. 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.

  40. 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.

  41. 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.

  42. 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.

  43. 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.

  44. 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.

  45. 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.

  46. 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.

  47. 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.    

  48. 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.

  49. 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.    

  50. 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. 

  51. 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. 

  52. 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.

  53. 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.

  54. 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.

  55. 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.

  56. 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.

  57. 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.

  58. 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.

  59. 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.

  60. 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.

  61. 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.

  62. 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.

  63. 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.

  64. 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.

  65. 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.

  66. 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.

  67. 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.

  68. 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.

  69. 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.

  70. 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.

  71. 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.

  72. 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.

  73. 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.

  74. 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.

  75. 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.

  76. 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.

  77. 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.

  78. 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.

  79. 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.

  80. 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.

  81. 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.

  82. 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.

  83. 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.

  84. 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.

  85. 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.

  86. 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.

  87. 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.

  88. 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.

  89. 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.

  90. 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.

  91. 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.

  92. 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.

  93. 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.

  94. 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.

  95. 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.

  96. 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.

  97. 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.

  98. 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.

  99. 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.

  100. 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.

  101. 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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