SAS11 Regular Posters

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Clinical: Innovations Non-Conventional
7  The Role of Minimally Invasive Spine Surgery in the Treatment of Degenerative Spine Pathologies - 5 Years Clinical Overview
J. Buric1, M. Pulidori1, C. Del Gaizo2
1CDC Val Di Sieve, Functional Unit for Spinal Surgery, Florence, Italy, 2CDC Val Di Sieve, Florence, Italy

Clinical: Reimbursement and Coding, Regulatories
18  Trends in Commercial Insurance Payments to Hospitals and Physicians for Spinal Fusion Procedures
M. Domyahn1, C.E. Read1, A.M. Menzie1, R.M. Grave1, S.R. Feinglass2
1Zimmer, Inc., Market Access, Minneapolis, MN, United States, 2Zimmer, Inc., Medical Affairs, Warsaw, IN, United States

Clinical: Interspinous and Ligamentoplasty
19  Prospective Evaluation of a Dorsal Decompression and Posterior Dynamic Flexion-limiting Stabilization in Patients with Spinal Stenosis and Degenerative Disc Disease: Six Month Follow up
R. Pflugmacher1, T. Randau1, R. Bornemann1, K. Kabir1, D.C. Wirtz1
1Universitätsklinikum Bonn, Klinik und Poliklinik für Orthopädie und Unfallchirurgie, Bonn, Germany

Clinical: Posterior dynamic pedicular stabilization
31  Clinical Outcomes of Degenerative Lumbar Spinal Stenosis Treated with Lumbar Decompression and the Cosmic 'Semi-Rigid' Posterior System
T. Kaner1, M. Sasani2, T. Oktenoglu2, A.L. Aydin3, A.F. Ozer2
1Pendik State Hospital, Istanbul, Turkey, 2American Hospital, Istanbul, Turkey, 3Istanbul Physical Therapy and Rehabilitation Training Hospital, Istanbul, Turkey

Clinical: Posterior dynamic pedicular stabilization
33  Comparison of Posterior Dynamic and Posterior Rigid Transpedicular Stabilization with Fusionto Treat Degenerative Spondylolisthesis
T. Kaner1, S. Dalbayrak2, T. Oktenoglu3, M. Sasani3, A.L. Aydin4, A.F. Ozer3
1Pendik State Hospital, Neurosurgery, Istanbul, Turkey, 2Kartal Training-Research Hospital, Neurosurgery, Istanbul, Turkey, 3American Hospital, Istanbul, Turkey, 4Istanbul Physical Therapy and Rehabilitation Training Hospital, Istanbul, Turkey

Clinical: Navigation, Image Guided Surgery and Robotic Assistance
34  Comparative Clinical Results between Conventional and Computer-assisted Pedicle Screw Installation in the Degenerative Lumbar Scoliosis
S.-H. Chen1, T.-P. Lin1, R.-W. Wu1, I.-J. Kao1, J.-Y. Ko1
1Chang Gung Memorial Hospital - Kaohsiung Medical Center, Orthopaedic Surgery, Kaohsiung Hsien, Taiwan, Republic of China

Clinical: Complications
39  Reported Re-operations in Lumbar Total Disc Replacement: Analysis of the Literature
S.L. Blumenthal1, R.D. Guyer1, J.E. Zigler1, D.D. Ohnmeiss2, S. Verma-Kurvari2
1Texas Back Institute, Plano, TX, United States, 2Texas Back Institute Research Foundation, Plano, TX, United States

Clinical: Prosthesis
40  Meta-analysis of Lumbar Total Disc Replacement FDA-regulaed Trials: A Missed Opportunity
Z. Hyder1, D.D. Ohnmeiss1, R.D. Guyer2, S.L. Blumenthal2, J.E. Zigler2
1Texas Back Institute Research Foundation, Plano, TX, United States, 2Texas Back Institute, Plano, TX, United States

Clinical: Prosthesis
41  Lumbar Total Disc Replacement vs. Fusion: Analysis of Cost Comparison Studies
R.D. Guyer1, A. Darwish2, S.L. Blumenthal1, J.E. Zigler1, D.D. Ohnmeiss2
1Texas Back Institute, Plano, TX, United States, 2Texas Back Institute Research Foundation, Plano, TX, United States

Clinical: Prosthesis
42  Bone Mineral Density Scanning in Potential Lumbar Total Disc Replacement Patients
R.D. Guyer1, S.L. Blumenthal1, J.E. Zigler1, S. Verma-Kurvari2, A. Atanasov2, D.D. Ohnmeiss2
1Texas Back Institute, Plano, TX, United States, 2Texas Back Institute Research Foundation, Plano, TX, United States

Basic science: Biomechanics / Basic Science
59  Validation of a New Method to Calculate the Orientation and Magnitude of Loads Applied to Pedicle Screws
A.L. Freeman1, M.S. Fahim2, J.E. Bechtold1
1Excelen, Minneapolis, MN, United States, 2University of Minnesota, Minneapolis, MN, United States

Basic science: Posterior dynamic pedicular stabilization
67  Evaluation of Semi-rigid Posterior Dynamic Fixation Adjacent to Rigid Fixation in the Lumbar Spine: An in vitro Biomechanical Study in a Calf Spine Model
D. Sengupta1, B. Bucklen2, A. Muzumdar2, M. Moldavsky2, S. Khalil2
1Dartmouth-Hitchcock Medical Center, Lebanon, NH, United States, 2Globus Medical, Audubon, PA, United States

Basic science: Biomechanics / Basic Science
71  Dynamic Spine Stabilizer Reduces Adjacent Intervertebral Disc Pressure during Flexion
W.-K. Chou1, Y.-W. Kuo1, D.-M. Lai2, S.-C. Chueh3, J.-L. Wang1
1National Taiwan University, Institute of Biomedical Engineering, Taipei, Taiwan, Republic of China, 2National Taiwan University Hospital, Department of General Surgery, Taipei, Taiwan, Republic of China, 3Industrial Technology Research Institute, Hsinchu, Taiwan, Republic of China

Clinical: Fusion
79  Larger Footprint TLIF Interbody Device Provides Early Postoperative Pain Control
J.W. McClellan, III1, K.L. Ryschon1, S.L. Stamm1
1Nebraska Spine Center, LLP, Omaha, NE, United States

Basic science: Biomechanics / Basic Science
81  A Clinical Assessment of a New Technique to Assess Motion Quality
B. Robie1, N. Wharton2, K. Yonemura3, L. Ferrara4, A. Khandha5, N. Anand6, A.E. Castellvi7
1Robie Device Group LLC, North Andover, MA, United States, 2Medical Metrics, Ind., Houston, TX, United States, 3Universtiy of Utah, Salt Lake City, UT, United States, 4Orthokinetic Technologies, Southport, NC, United States, 5University of Toledo, Toledo, OH, United States, 6Cedars-Sinai Medical Center, Los Angeles, CA, United States, 7Florida Orthopaedic Institute, Orthopaedic Surgery Spine, Tampa, FL, United States

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
83  Alterations in Disc Height, Foraminal Height and Foraminal Width Following One- and Two-Level AxiaLIF: A Radiological Analysis
N. Kukkar1, R.T. Beck1, M.C. Mai1, D.N. Sullivan1, J.C. Milbrandt1, P. Freitag1
1Southern Illinois University School of Medicine, Division of Orhopaedics, Springfield, IL, United States

Clinical: Fusion
86  Spinal Fusion in the United States: Analysis of Trends from 1998 to 2008
H.W. Bae1,2, S.S. Rajaee1,2,3, L.E. Kanim1,2, R.B. Delamarter1,2
1Spine Research Foundation, Santa Monica, CA, United States, 2Cedars Sinai Spine Center, Beverly Hills, CA, United States, 3Tufts University School of Medicine, Boston, MA, United States

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF
88  MI-TLIF with One Cage and Pedicle Screw System for the Treatment of Lumbar Spondylolisthesis
H. Wu1, Z. Gao1, J. Wang1, R. Jiang1
1Jilin University, Orthopadic Department of 3rd Hospital, Changchun, China

Clinical: Identifying and treating the pain generator
95  Evaluation of the Functional Anesthetic Discogram as a Screening Tool for Lumbar Fusion to Treat Degenerative Disc Disease
Y.-P.L. Lee1, T. Allen1, S. Garfin1
1UCSD Medical Center, Department of Orthopaedic Surgery, San Diego, CA, United States

Basic science: Biomechanics / Basic Science
98  The Mechanical Role of Different Macroscopic Changes in Lumbar Intervertebral Disc Degeneration: A Randomized Numerical Study
H.-J. Wilke1, F. Galbusera1, H. Schmidt1, C. Neidlinger-Wilke1
1University of Ulm, Ulm, Germany

Basic science: Posterior dynamic pedicular stabilization
104  Biomechanical Effect of Posterior Dynamic Stabilization Topping-off Fusion
M. Moumene1
1DePuy Spine Inc., Reseach & Development, Raynham, MA, United States

Clinical: Lumbar Non-Fusion (i.e. MIS discectomy, percutaneous discectomy)
110  Percutaneous Posterolateral Transforminal Endoscopic Discectomy: Clinical Outcome, Complications and Learning Curve Evaluation
S.A. Tenenbaum1, H. Arzi1, A. Herman1, A. Friedlander1, M. Levinkopf1, I. Caspi1
1Tel Hashomer, Orthopedic Surgery, Ramat Gan, Israel

Clinical: Navigation, Image Guided Surgery and Robotic Assistance
111  Can Kyphoplasty Prevent Vertebral Body with Occult Osteoporotic Fracture from Collapse?
H. Yang1, M. Gan1, J. Zou1
1The First Affiliated Hospital of Soochow University, Suzhou, China

Clinical: Navigation, Image Guided Surgery and Robotic Assistance
113  Prospective Multi-center Evaluation of Percutaneous Lumbar Pedicle Screw Placement using the Oblique or “Owl's Eye” View
C. Idler1, M. Wahl2
1Orthopedic Specialists of NC, Raleigh, NC, United States, 2Kadlec Neuroscience Center, Richland, WA, United States

Basic science: Biomechanics / Basic Science
115  Relevance of Using a Compressive Preload in the Cervical Spine: An Experimental and Numerical Simulating Investigation
C.Y. Barrey1,2,3, S. Persohn3, S. Campana3, M.-A. Rousseau3, G. Perrin1, W. Skalli3
1Hospices Civils de Lyon, Neurosurgery and Spine Surgery, Lyon, France, 2Claude Bernard University Lyon, Neurosurgery, Lyon, France, 3Arts et Metiers ParisTech, Laboratory of Biomechanics, Paris, France

Clinical: Trauma: fractures and spinal cord repair
122  The Influence of Correction Loss in Thoracolumbar Fractures Treated by Posterior Instrumentation: A Minimum 7-year Follow-up
J. Shi1, J. Liu2, M.Z. Moral2, H. Yang1
1The First Affiliated Hospital of Soochow University, Suzhou, China, 2University of Toledo Medical Center, Toledo, OH, United States

Clinical: Posterior dynamic pedicular stabilization
123  Study on Treatment of Lumbar Radiculopathy by Selective Decompression of Lumbar Root Canal
S. Feng1
1Tianjin Medical University General Hospital, Tianjin, China

Clinical: MIS fusion-stabilization
127  Minimally Invasive Lumbar Spinal Fusion Surgery it ́s Rational, Benefits and Effects on Patient Outcomes
1 D.W. Kucharzyk , E. Mccorkle
1The Orthopaedic, Pediatric & Spine Institute, Crown Point, IN, United States

Clinical: Trauma: fractures and spinal cord repair
138  Minimally Invasive Treatment of Thoracolumbar Spine Fractures
J. Manon1, C. Sedney1, J. Mills1, B. Coger1, T. Julien1
1West Virginia University, Neurosurgery, Morgantown, WV, United States

Clinical: Deformity
144  Surgical Treatment of Adolescent Idiopathic Scoliosis in Patients with Congenital Heart Disease: Comparison of Three Different Types of Constructs
G. La Rosa1, G. Giglio1, L. Oggiano1
1Research Institute Paediatric Hospital Bambino Gesù Palidoro (Rome), Paediatric Surgery Department, Orthopaedic Unit, Fiumicino (Rome), Italy

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF
151  Sagittal and Coronal Deformity Correction through Minimally Invasive Trans-psoas Lateral Interbody Fusion; Complication Avoidance by Modification of Surgical Technique U.S.
Metkar1, K.J. McGuire2, A.P. White2
1SUNY Upstate Medical University, Orthopedics, Syracuse, NY, United States, 2Beth Israel Deaconess Medical Center/ Harvard Medical School, Carl J Shapiro Department of Orthopaedic Surgery, Boston, MA, United States

Clinical: Lumbar Non-Fusion (i.e. MIS discectomy, percutaneous discectomy)
156  Our Experience with Percutaneous Bilateral Facet Motion Augmentation System: A Report of 60 Cases
A.P. Fabriz1, R. Maina1, L. Schiabello1
1Villa Maria Pia Hospital, Torino, Italy

Basic science: MIS fusion-stabilization
160  Biomechanical Investigation of a New Implant for Facet Fusion
H.-J. Wilke1, N. Graf1, S. Midderhoff1, U. Berlemann2
1University of Ulm, Institute of Orthopaedic Research and Biomechanics, Ulm, Germany, 2Spine Center, Thun, Switzerland

Basic science: Innovations Non-Conventional
162  Biomechanical Investigation of a New Annulus Reconstruction Implant after a Provoked Nucleus Extrusion
H.-J. Wilke1, L. Widmann1, N. Graf1, F. Heuer
1University of Ulm, Institute of Orthopaedic Research and Biomechanics, Ulm, Germany

Clinical: Fusion
163  Comparison of Stand-alone ALIF and Mini-TLIF
J.Y. Oh1, C.K. Chough1
1Yeouido St. Mary's Hospital, The Catholic University, Department of Neurosurgery, Seoul, Korea, Republic of

Clinical: Prosthesis
165  Nubac Disc Lumbar Arthroplasty: Clinical Study and Results
M. Balsano1, C. Doria2
1UO Ortopedia, Spinal Regional Department, Schio, Italy, 2University Clinic Orthopedic, Sassari, Italy

Basic science: Biomechanics / Basic Science
166  Psoas Muscle Architectural Design, in vivo Sarcomere Length Range, and Passive Tensile Properties Support its Role as a Lumbar Spine Stabilizer
G. Regev1, C.W. Kim2, A. Tomiya3, Y.P. Lee3, H. Ghofrani3, R. Lieber3, S.R. Ward3, S.R. Garfin3
1Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel, 2Spine Institute of San Diego, Center for Minimally Invasive Spine Surgery at Alvarado Hospital, USA, San Diego, CA, United States, 3Departments of Orthopaedic Surgery, University of California and Veterans Administration Medical Centers San Diego, San Diego, CA, United States

Clinical: Cervical new motion preservation technologies
172  Will an Advanced Generation Artificial Cervical Disc Provide Normal Post-operative Kinematics?
C. Lauryssen1, D. Coric2, T. Dimmig3, D. Musante3, C. Schätz4, L. Gössel4, H. Poimann5, M. Ant6, B. Bruchmann7, F. Killian7, M. Puchner8, T. Bierstedt8, K. Ritter-Lang9, J. Hipp10, N. Wharton10
1Institute for Advanced Spinal Research in California, Beverly Hills, CA, United States, 2Carolina Neurosurgery and Spine Associates, Charlotte, NC, United States, 3Triangle Orthopaedic Associates, Durham, NC, United States, 4Orthopädische Klinik, Markgröningen, Germany, 5Neurochirurgische Gemeinschafts Praxis, Wuerzburg, Germany, 6Zentrum für Wirbelsäulenchirurgie, Düsseldorf, Germany, 7Katholisches Klinikum Koblenz, Koblenz, Germany, 8Knappschaftskrankenhaus, Recklinghausen, Germany, 9Spezialpraxis für Wirbelsäulenchirurgie, Potsdam, Germany, 10Medical Metrics, Inc., Houston, TX, United States

Clinical: Posterior dynamic pedicular stabilization
175  Patient Satisfaction Following Lumbar DSS Surgery (Dynamic Spine Stabilization System, Paradigm Spine)
D. Selvan1, M. El Malky1, S. Cadman2, I. Shackleford1
1Warrington District General Hospital, Trauma and Orthopaedics, Warrington, United Kingdom, 2Warrington District General Hospital, Physiotherapy, Warrington, United Kingdom

Basic science: Cervical new motion preservation technologies
179  Biomechanical Evaluation of the Titania Cervical Intervertebral Disc Prosthesis
F. Dominguez1, K. Yücesoy2, K.Z. Yüksel3, P.M. Reyes1, A.G.U. Sawa1, N.R. Crawford1
1Barrow Neurological Institute, Spinal Biomechanics, Phoenix, AZ, United States, 2Dokuz Eylül Üniversitesi, Neurosurgery, Izmir, Turkey, 3Kahramanmaras Sutcu Imam University, Neurosurgery, Kahramanmaras, Turkey

Clinical: Evaluation of new biologic treatment
191  Minimally Invasive Lumbar Fusion (XLIF) Using a βTCP-HA Bone Graft Substitute (FormaGraft): Fusion Rates out to 2 Years
W.B. Rodgers1, E.J. Gerber1, J.A. Rodgers2
1Spine Midwest, Inc., Jefferson City, MO, United States, 2Spine Midwest, Inc., Research, Jefferson City, MO, United States

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF
193  Minimally Invasive Far Lateral Lumbar Interbody Fusion: A Review of the Technique, Indications and Preliminary Outcomes
C. Doria1, M. Balsano2, P. Tranquilli Leali1, A. Zachos1, A. Ruggiu1, F. Muresu1, C. Meloni1
1University Clinic, Orthopaedic, Sassari, Italy, 2AUSSL 4 Alto Vicentino, Orthopaedic Department, Schio, Italy

Basic science: Posterior dynamic pedicular stabilization
197  Design Optimization of a Posterior Dynamic Stabilization Concept for Restoring the Intact Biomechanics of Lumbar Spine after Facetectomy
A. Kiapour1, A.M. Kiapour1, V.K. Goel1
1University of Toledo, Bioengineering, Toledo, OH, United States

Clinical: Posterior dynamic pedicular stabilization
198  Dynamic Stabilization of the Lumbar Spine with Isobar
D.Q. McBride1, D.J. Blaskiewicz1
1UCLA, Neurosurgery, Los Angeles, CA, United States

Basic science: Biomechanics / Basic Science
200  Micro-CT Based, Structural Analysis of the Facet Joint, Comparing L4/5 to C6/7
U. Wolfram1, D. Zanker1, H.-J. Wilke1
1Ulm University, Institute of Orthopaedic Research and Biomechanics, Ulm, Germany

Basic science: Prosthesis
205  Effect of Multilevel Lumbar Disc Arthroplasty on Spine Kinematics and Facet Joint Loads
H. Schmidt1, F. Galbusera1, A. Rohlmann2, T. Zander2, H.-J. Wilke1
1University of Ulm, Institute of Orthopaedic Research and Biomechanics, Ulm, Germany, 2Julius-Wolff- Institut, Charite - Universitaetsmedizin Berlin, Berlin, Germany

Clinical: Cervical new motion preservation technologies
206  PEEK on PEEK Cervical Disc Replacement (POPCDR): Clinical and Radiological Results of 36 Patients with More than One Year Follow up
S. Lakkol1, K. Lingutla1, R. Taranu1, S. Aranganathan1, G. Reddy1, T. Friesem1
1University Hospital North Tees, Stockton on Tees, United Kingdom

Clinical: Deformity
216  Hospital Cost Analysis of Adult Scoliosis Surgery in 120 Consecutive Cases
M. Ialenti1, B. Lonner1, P. Penn1, P. Ricart-Hoffiz1, L. Wyndsor1, F. Schwab1, T. Errico1
1New York University, Orthopaedic Surgery, New York, NY, United States

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
221  A Novel Minimally Invasive Technique to Avoid Injury during the Implantation of the Trans1 Axial Lumbar Interbody Fusion Device
J. Grieco1, J.B. Billys2
1Foundation for Orthopaedic Research and Education, Tampa, FL, United States, 2Florida Orthopaedic Institute, Tampa, FL, United States

Basic science: Biomechanics / Basic Science
231  Static Evaluation of Shear Loading Associated with Extension/Compression of the CerviCore Intervertebral Disc
A. Valdevit1,2, K. Stascacage2, M. Brophy2, A. Lisi2, T. Errico1
1NYU School of Medicine, New York, NY, United States, 2The Stevens Institute of Technology, Hoboken, PA, United States

Clinical: Biomechanics / Basic Science
232  Static Evaluation of Distraction Associated with Axial Rotation of the CerviCore Disc
A. Valdevit1,2, K. Stascacage2, M. Brophy2, A. Lisi2, T. Errico1
1NYU School of Medicine, New York, NY, United States, 2The Stevens Institute of Technology, Hoboken, PA, United States

Clinical: Interspinous and ligamentoplasty
236  Interspineous Distraction and Stabilisation with the Superion Implant for Effective Minimally Invasive Treatement of Moderate Spinal Stenosis
S. Hellinger1, W. Bini2
1ISAR Kliniken, Spine Unit, Munich, Germany, 2Dubrovnik General Hospital, Dubrovnik, Croatia

Clinical: Lumbar Non-Fusion (i.e. MIS discectomy, percutaneous discectomy)
238  Disc-FX - A New Combination Procedure for Disc Surgery - Basics and 2 Years Results of a Prospective Study
S. Hellinger1
1ISAR Kliniken, Spine Unit, Munich, Germany

Clinical: Lumbar Non-Fusion (i.e. MIS discectomy, percutaneous discectomy)
247  Endoscopic Dorsal Rhizotomy, a New Anatomically Guided MIS Procedure, Is More Effective than Traditional Pulsed Radiofrequency Lesioning for Non-discogenic Axial Back Pain
A. Yeung1, Y. Zheng1, C. Yeung1, J. Field1, C. Meredith1, San Diego Spine Study Group
1Desert Institute for Spine Care, Phoenix, AZ, United States

Basic science: Biomechanics / Basic Science
249  Prophylactic Usage of Interspinous Spacer in Rigid Lumbar Fusion Surgery, Does it Work for Prevention of Adjacent Level Disc Degeneration?
H.-C. Hsu1,2, C.-H. Liu1, W.-K. Chou1, J.-L. Wang1
1National Taiwan University, Institute of Biomedical Engineering, Taipei, Taiwan, Republic of China, 2National Taiwan University Hospital, Department of Orthopaedic, Taipei, Taiwan, Republic of China

Clinical: Deformity
250  Segmental Correction of Adult Focal Sagittal Plane Deformity Using a Novel Lateral Interbody Approach with Anterior Longitudinal Ligament Release
B. Akbarnia1, G. Mundis1, P. Moazzaz1, N. Kabirian1
1San Diego Center for Spinal Disorders, La Jolla, CA, United States

Clinical: Deformity
252  Isolating the Effect of the Lateral Approach in Combined Anterior and Posterior Surgery for Adult Spinal Deformity: A Radiographic Analysis
S. Schroerlucke1, G. Mundis1, P. Salari1, R. Bagheri1, J. Pawelek1, B. Akbarnia1
1San Diego Center for Spinal Disorders, La Jolla, CA, United States

Clinical: Trauma: fractures and spinal cord repair
257  Variant Jefferson Fractures: Diagnosis and Treatment
H.L. Yang1, J. Zhou1, L. Chen1, Z.G. Zhang1, C. Ji1
1The First Affiliated Hospital of Soochow University, Dept. of Orthopaedic Surgery, Suzhou, China

Clinical: Fusion
260  Occipitocervical Fusion with Transpedicular Fixtion System
Z. Ruofu1, H. Yang1, Y. Yang1, T. Tan1
1The First Affiliated Hospital of Suzhou, Suzhou, China

Clinical: Trauma: fractures and spinal cord repair
261  The Use of Cervical Transpedicular Fixation for the Treatment of Fracture and Dislocation of Lower Cervical Spine
R. Zhu1, H. Yang1, F. Zhou1, W. Jiang1, T. Tang1
1The First Affiliated Hospital of Suzhou, Suzhou, China

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
263  Percutaneous Axial Lumbosacral Interbody Fusion: Preliminary Clinical and Radiological Results
C. Doria1, M. Balsano2, P. Tranquilli Leali1, A. Ruggiu1, F. Muresu1, A. Zachos1
1University Clinic Orthopedic, Sassari, Italy, 2AUSSL 4 Alto Vicentino, Orthopaedic Department, Schio, Italy

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
264  Minimally Invasive Lumbar Interbody Fusion Access through Extreme Lateral Approach: Analysis of Medium-term Results
C. Doria1, M. Balsano2, P. Tranquilli Leali1, A. Zachos1, C. Meloni1, A. Ruggiu1, F. Muresu1
1University Clinic Orthopedic, Orthopaedic, Sassari, Italy, 2AUSSL 4 Alto Vicentino, Orthopaedic Department, Schio, Italy

Clinical: Trauma: fractures and spinal cord repair
267  Three Different Surgical Approaches and Treatment Options for Thoracolumbar Burst Fractures
W. Han1, J. Rui1, C. Wei1, L. Wenxuan1, W. Yang1, D. Desheng1
1Institute of Orthopaedics, China-Japan Hospital, Jilin University, Orthopaedics, Changchun, China

Basic science: Nucleoplasty and Intradiscal therapies
268  Biomechanical Effects of Nucleus Augmentation with an Injectable in situ Cured Hydrogel
B.C. Cheng1, D.J. Cook1, D. Gladowski1, J.B. Bellotte1, D.M. Whiting1
1Drexel University, Neurosurgery, Pittsburgh, PA, United States

Clinical: Complications
288  Single Extrafascial Lumbar Incision or Modified Muscle-sparing Paraspinal Approach? A Review of the Rate of Subcutaneous Lumbar Seromas in Patients Treated with a Lumbar Motion Preservation System
K. Butterworth1, M.P. Lorio1, N. Anand2, R. Rosemann2
1Neuro-Spine Solutions, P.C., Bristol, TN, United States, 2Cedars-Sinai Medical Center, Los Angelas, CA, United States

Clinical: MIS fusion-stabilization
296  Dynamic EMG Testing for the Placement of Lumbar Pedicle Screws
A. Tohmeh1, R. Bazzano1
1Northwest Orthopaedic Specialists, P.S., Spokane, WA, United States

Basic science: Biomechanics / Basic Science
313  Quantifying the Load-bearing Characteristics of the Whole Lumbar Spine: A Finite Element Method Study
H.-Y. Kang1, J. Jeon2, D. Song2, H. Kim2, S. Lee3, S.-H. Lee4
1Dongrae Wooridul Spine Hospital, Radiology, Seoul, Korea, Republic of, 2Wooridul Spine Hospital, Biomechanics Laboratory, Seoul, Korea, Republic of, 3Inje University, Biomedical Engineering, Kimhae, Korea, Republic of, 4Wooridul Spine Hospital, Neurosurgery, Seoul, Korea, Republic of

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
317  Successful Revision of an L5-S1 AxiaLIF Rod Using a Minimally Invasive Presacral Approach: A Case Report
A. Cohen1, L.E. Miller2, J.E. Block3
1The Brooklyn Hospital Center, Neurosurgery, Brooklyn, NY, United States, 2Miller Scientific Consulting, LLC, Flagstaff, AZ, United States, 3Jon E. Block, Ph.D., Incorporated, San Francisco, CA, United States

Clinical: Lumbar Non-Fusion (i.e. MIS discectomy, percutaneous discectomy)
318  Choice of Indication for Kyphoplasty
H. Yang1, B. Meng1, X. Mei1, T. Tang1
1The First Affiliated Hospital of Soochow University, Suzhou, China

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
319  Combination of Minimally Invasive Surgical Techniques (XLIF and TLIF) for the Treatment of Two- level Disc Disease in the Lumbar Spine. Radiological and Clinical Outcomes out to 20 Months
H. Nicola1, M. Da Silva2, L. Pimenta3
1Hospital San Juan de Dios, Caracas, Venezuela, 2Clinica Sanatrix, Spine Surgery, Caracas, Venezuela, 3Hospital Santa Rita, Sao Paulo, Brazil

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
321  Mini-open Lateral Approach for Anterior Lumbar Interbody Fusion
C.S. Lee1, S.S. Chung1, Y.R. Pae1, K.J. Kang1, S.J. Park1
1Sungkyunkwan University School of Medicine, Department of Orthopedic Surgery, Seoul, Korea, Republic of

Clinical: Prosthesis
323  Artificial Lumbar Disc Replacement in the Treatment to Recurrent Lumbar Disc Herniation
Y. Hai1, S. Lu1, N. Kang1, H. Zhao1
1Beijing Chaoyang Hospital, Capital Medical University, Orthopedics, Beijing, China

Clinical: Deformity
328  Revision Surgery for Severe Kyphoscoliosis
Y. Hai1, Q. Su1, S. Lu1
1Beijing Chaoyang Hospital, Capital Medical University, Orthopedics, Beijing, China

Basic science: Posterior dynamic pedicular stabilization
332  Study of Biomechanical Effects of Current Pedicle-based Dynamic Stabilization Systems (PBDS) Using Finite Elements Model
T.-A. Jahng1, Y.E. Kim2
1Seoul National University, Neurosurgery, Seoul, Korea, Republic of, 2Dankook University, Mechanical Engineering, Yongin, Korea, Republic of

Clinical: Sports and Spine
337  The Effect of Lumbar and Back Exercises after Kyphoplasty
H. Yang1, X. Mei1
1The First Affiliated Hospital of Soochow University, Suzhou, China

Clinical: Cervical new motion preservation technologies
345  Early Clinical Experience of NuNec Artificial Cervical Disc
D. Zou1
1 306 Hospital of PLA, Beijing, China

Clinical: Posterior dynamic pedicular stabilization
349  Posterior Lumbar Dymanic Stabilisation with TTL/DMT System for Degenerative Spondylolisthesis and Spinal Stenosis: A New Stabilisation System
R. Taranu1, S.G. Lakkol1, K.K. Lingutla1, M. Hernandez1, M. Krishna1, C. Bhatia1
1University Hospital North Tees, Stockton on Tees, United Kingdom

Clinical: Prosthesis
353  Cervical Alignment Changes after Single Level ProDisc-C Replacement
Z. Yanbin1, S. Yu1
1Peking University Third Hospital, Beijing, China

Clinical: Prosthesis
355  Clinical Outcome of Lumbar Total Disc Replacement Using ProDisc-L in Degenerative Disc Diseases: Minimum 5-year Follow-up Results
C.-K. Park1, K.-S. Ryu1
1Seoul St. Mary's Hospital, The Catholic University, Seoul, Korea, Republic of

Clinical: Prosthesis
357  The Early Follow-up after Treatment of Degenerative Disc Disease with the Prestige LP Cervical Disc Prosthesis: Single-level and Bi-level
T. Hu1, H. Liu1, C. Ding1, R. Shi2
1West China Hospital, Sichuan University, Department of Orthopedic Surgery, Chengdu, China, 2West China Hospital, Sichuan University, Department of Science and Technology Development, C, China

Clinical: Prosthesis
358  Sagittal Alignment and Ranges of Motion 30 Months after Cervical Disc Replacement with a Semi- constrained Cervical Prosthesis
A. Ramadan1, O. Gille2, C. Mazel3
1Clinique Beaulieu, Neurosurgery, Geneve, Switzerland, 2CHU Pellegrin Hospital, Orthopaedics and Traumatology, Bordeaux, France, 3Institute Mutualiste Montsouris, Orthopaedic Surgery and Traumatology, Paris, France

Clinical: Deformity
359  Comparative Analysis of Surgical Approaches and Osteotomies for the Correction of Sagittal Plane Spinal Deformity in Adults
P.A. Ricart-Hoffiz1, B. Burkett2, M. Ialenti2, F. Schwab2, J.-P. Farcy2, B. Lonner2, T. Errico2, J. Bendo2
1NYU, Orthopaedic Surgery, New York, NY, United States, 2NYU Hospital for Joint Diseases, Orthopaedic Surgery, New York, NY, United States

Clinical: Prosthesis
361  Clinical Outcomes, Complications and Ranges of Motion 2 Years after Total Cervical Disc Replacement
O. Gille1
1CHU Pellegrin Hospital, Dept of Orthopaedic Surgery and Traumatology, Bordeaux, France

Clinical: Posterior dynamic pedicular stabilization
362  Posterior Lumbar Inter-laminar Dynamic Stabilization Combined with Fusion for the Treatment of Multiple Level Lumbar Stenosis
L. Zhou1, Yong Hai
1Beijing Chaoyang Hospital, Capital Medical University, Orthopedics, Beijing, China

Clinical: Deformity
363  The Incidence of Transitional Vertebra in the Lumbar Spine
P.A. Ricart-Hoffiz1, A. Apazidis1, C. Diefenbach1, J. Spivak1
1NYU Hospital for Joint Diseases, Orthopaedic Surgery, New York, NY, United States

Clinical: Deformity
365  Minimally Invasive Spine Surgery in Adult Deformity Correction: A Prospective Case Series of 37 Patients
M.N. Scott-Young1, C. Magno2, D. Nielsen2, E. Mitchell2, N. Blanch2
1Bond University, Faculty of Health Sciences & Medicine, Robina, QLD, Australia, 2Gold Coast Spine, Southport, QLD, Australia

Clinical: Posterior dynamic pedicular stabilization
370  Functional Pedicle Based Posterior Dynamic Stabilization System (DSS ) - First Results
R. Bertagnoli1
1ProSpine, Straubing, Germany

Clinical: Deformity
372  Clinical Characteristics of Adolescent Idiopathic Scoliosis (AIS) Patients who Were Lost to Followup
P.A. Ricart-Hoffiz1, N. Bharucha1, P. Trobisch1
1NYU Hospital for Joint Diseases, Orthopaedic Surgery, New York, NY, United States

Basic science: Biomechanics / Basic Science
381  Characterizing Disc Bulge in Three Different Regions of the Outer Annulus Subjected to Biomechanical Testing Including Pure Moment Protocols
B.C. Cheng1, D.J. Cook1, J.B. Bellotte1, D.M. Whiting1
1Drexel University, Neurosurgery, Pittsburgh, PA, United States

Clinical: Fusion
392  Biomechanical Evaluation of the VertelocTM Facet Stabilization System - An in vitro Study
M. Kodigudla1, V. Palepu1, V. Kaul1, V. Goel1, H. Elgafy2, S. Kutnik2, T. Vestgaarden3
1University of Toledo, Bioengineering, Toledo, OH, United States, 2University of Toledo Medical Center, Orthopedic Surgery, Toledo, OH, United States, 3VG Innovations, Inc., Winston-Salem, NC, United States

Clinical: Cervical new motion preservation technologies
393  Posterior Cervical Microscopic Foraminotomy and Discectomy Using CO2 Laser in Unilateral Cervical Radiculopathy
H.-C. Jeon1, J.-K. Lee2, T.-H. Kim1, H.-S. Park1, J.-S. Kim1, S.-C. Kim1
1Gwangju Woori Spine Hospital, Neurosurgery, Gwangju, Korea, Republic of, 2Chonnam National University Hospital & Medical School, Neurosurgery, Gwangju, Korea, Republic of

Basic science: Biomechanics / Basic Science
394  Performance of Cervical TDRs for Both Center of Balance and Center of Rotation in a Cadaveric Model
B.-K.N. Nguyen1, J.K. Taylor1
1Dimicron Inc., Orem, UT, United States

Clinical: Innovations Non-Conventional
398  Surgical Excision with Preoperative Embolization for Primary Sacral Tumors
H. Yang1, K. Chen1, J. Lu1, G. Wang1, Y. Ji1
1The First Affiliated Hospital of Soochow University, Suzhou, China

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
399  The Coflex F(TM) - A New Minimally Invasive Device for the PLIF Procedure
M. Eif1
1Städtisches Klinikum Goerlitz gGmbH, Neurochirurgie, Görlitz, Germany

Clinical: Prosthesis
400  Prospective Randomized Series Comparing MaverickTM Lumbar Total Disc Replacement (TDR) with Anterior Lumbar Interbody Fusion (ALIF): Five Year Follow up
K.A. Pettine1
1The Spine Institute, Loveland, CO, United States

Basic science: Posterior dynamic pedicular stabilization
408  A Comparison of Anterior Column Load-sharing and Load Distribution Following Rigid and Semi- rigid Fixation Techniques: Material, Implant Design and Biomechanics
D. Sengupta1, B. Bucklen2, J. Nichols2, R. Angara2, S. Khalil2
1Dartmouth-Hitchcock Medical Center, Lebanon, NH, United States, 2Globus Medical, Audubon, PA, United States

Basic science: Biomechanics / Basic Science
409  Tolerance and Shape Selection in Patient-specific Drilling Templates
R.D. Lefevre1,2, S. Baek2, M. Tulio Reis2, A.G.U. Sawa2, P.M. Reyes2, N.R. Crawford2
1The Howard Hughes Medical Institute through the Undergraduate Science Education Program and from the Arizona State University School of Life Sciences, Tempe, AZ, United States, 2Barrow Neurological Institute, Spinal Biomechanics Laboratory, Phoenix, AZ, United States

Basic science: Cervical new motion preservation technologies
412  Dynamic Cervical Stabilization: A Novel, Motion-preserving Alternative to Fusion and Articulating Total Disc Replacement
J.D. Auerbach1, S.A. Rundell2
1Bronx-Lebanon Hospital Center, Albert Einstein College of Medicine, New York, NY, United States, 2Exponent, Farmington Hills, MI, United States

Basic science: Posterior dynamic pedicular stabilization
419  Semi-rigid Lumbar Spinal Stabilization Lowers Screw-bone Interface Force and Cancellous Bone Strain when Compared with PEEK and Titanium Rod Systems in a Healthy and Osteoporotic Spine
J.D. Auerbach1, P. Hanulewicz1, S.A. Rundell2
1Bronx-Lebanon Hospital Center, Albert Einstein College of Medicine, New York, NY, United States, 2Exponent, Inc., Farmington Hills, MI, United States

Clinical: MIS fusion-stabilization
422  Minimal Invasive Spinal Fixation in Septic Conditions
B. Blondel1, S. Fuentes2, P. Tropiano1
1Université de la Méditerranée, Orthopaedic Surgery, Marseille, France, 2Université de la Méditerranée, Neurosurgery, Marseille, France

Clinical: Prosthesis
424  Clinical Performance of an Elastomeric Lumbar Disc Replacement 24 Months Following Surgery
L. Oliveira1, L. Marchi1, E. Coutinho1, L. Pimenta1,2
1Instituto de Patologia de Coluna, São Paulo, Brazil, 2University of California San Diego, San Diego, CA, United States

Clinical: Deformity
432  Common Mathematical Formulas Fail to Predict Postoperative Sagittal Alignment: Confirmation of a Need for More Advanced Equations
B.N. Ungar1, J.S. Smith2, S. Bess3, F.J. Schwab1, C.I. Shaffrey2, D.C. Burton4, R.A. Hart5, R. Hostin6, V.C. Lafage1, International Spine Study Group
1NYU Hospital for Joint Diseases, Orthopaedics, New York, NY, United States, 2University of Virginia, Neurological and Orthopaedic Surgery, Charlottesville, VA, United States, 3Rocky Mountain Scoliosis and Spine, Orthopaedic Surgery, Denver, CO, United States, 4University of Kansas Medical Center, Orthopaedic Surgery, Kansas City, KS, United States, 5Oregon Health and Sciences University, Orthopaedic Surgery, Portland, OR, United States, 6Baylor Scoliosis Center, Orthopaedic Surgery, Plano, TX, United States

Basic science: Fusion
433  A Novel, Simple Method to Salvage Stripped Lateral Mass Screws in the Subaxial Cervical Spine Using the Screw SockTM
J.D. Auerbach1, R.L. Siskey2,3, C. Geisert4, K. Ellfeldt4
1Bronx-Lebanon Hospital Center, Albert Einstein College of Medicine, Bronx, NY, United States, 2Exponent, Biomechanics, Philadelphia, PA, United States, 3Drexel University, Biomedical Engineering, Philadelphia, PA, United States, 4Geisert Square, Donaueschingen, Germany

Basic science: Innovations Non-Conventional
437  Long Term Study: A Novel Cervical Spine Posterior Fixation Using Bio-derived Tendon in the Goat Cervical Ligament Complex Injury Model
H. Liu1, B. Wang1, Y.K. Luo1, W. Hou2, H. Xie1, R. Shi1, X. Zhao1, W. Zhang1, X. Liu1, G. Feng1
1West China Hospital, Sichuan University, Department of Orthopedics, Chengdu, China, 2No.363 Hospital, Chengdu, China

Clinical: Interspinous and ligamentoplasty
438  Multi-center Clinical Experience with the FLEXUSTM Interspinous Spacer
J. Dwyer1, P. Vessa1, D. Johnson2, S. Poletti2, C.J. Prusmack3, M. Martin4, K. Baker5, J. Myer5 1Somerset Orthopedics, Somerset, NJ, United States, 2Southeastern Spine Institute, Mount Pleasant, SC, United States, 3Skyridge Medical Center, Littleton, CO, United States, 4Puget Sound Spine Institute, Tacoma, WA, United States, 5Globus Medical, Inc., Audubon, PA, United States

Clinical: Interspinous and ligamentoplasty
438  Multi-center Clinical Experience with the FLEXUSTM Interspinous Spacer
J. Dwyer1, P. Vessa1, D. Johnson2, S. Poletti2, C.J. Prusmack3, M. Martin4, K. Baker5, J. Myer5
1Somerset Orthopedics, Somerset, NJ, United States, 2Southeastern Spine Institute, Mount Pleasant, SC, United States, 3Skyridge Medical Center, Littleton, CO, United States, 4Puget Sound Spine Institute, Tacoma, WA, United States, 5Globus Medical, Inc., Audubon, PA, United States

Clinical: Fusion
439  Reconstructing the Anulus: Complete One-year and Initial Two-year Results from the Intrinsic Therapeutics Barricaid® Endoprosthesis Pilot Study
M. Vilendecic1, D. Ledic2, G. Grahovac1, D. Vukas2, P. Varga3, S. Eustacchio4, M. Gorensek5
1Department of Neurosurgery, University Hospital Dubrava, Zagreb, Croatia, 2University Hospital, Rijeka, Croatia, 3Buda Health Center, Budapest, Hungary, 4Karl-Franzenz-Universitat, Graz, Austria, 5Clinical Centre, Ljubljana, Slovenia

Clinical: Deformity
442  Thoracic Pedicle Subtraction Osteotomy for Adult Spinal Deformity Improves Regional Spinal Deformity and Pelvic Tilt
F.J. Schwab1, S. Bess2, J. Demakakos1, R. Hostin3, C.P. Ames4, E. Klineberg5, O. Boachie-Adjei6, D.C. Burton7, R.A. Hart8, C.I. Shaffrey9, J.S. Smith9, V.C. Lafage1, International Spine Study Group
1NYU Hospital for Joint Diseases, Orthopaedics, New York, NY, United States, 2Rocky Mountain Scoliosis and Spine, Orthopaedic Surgery, Denver, CO, United States, 3Baylor Scoliosis Center, Orthopaedic Surgery, Plano, TX, United States, 4University of California - San Francisco Medical Center, Orthopaedic Surgery, San Francisco, CA, United States, 5University of California - Davis, Orthopaedic Surgery, Sacramento, CA, United States, 6Hospital for Special Surgery, Orthopaedic Surgery, New York, NY, United States, 7University of Kansas Medical Center, Orthopaedic Surgery, Kansas City, KS, United States, 8Oregon Health and Sciences University, Orthopaedic Surgery, Portland, OR, United States, 9University of Virginia, Neurological and Orthopaedic Surgery, Charlottesville, VA, United States

Clinical: Fusion
444  The Use of rh-BMP2 in Standalone eXtreme Lateral Interbody Fusion (XLIF) Clinical and Radiological Results after 24 Months Follow-up
L. Oliveira1, L. Marchi1, E. Coutinho1, L. Pimenta1,2
1Instituto de Patologia de Coluna, São Paulo, Brazil, 2University of California - San Diego, San Diego, CA, United States

Clinical: Fusion
447  Standalone Anterior Interbody Fusion Procedure for the Treatment of Low Grade Spondylolisthesis
L. Oliveira1, L. Marchi1, E. Coutinho1, L. Pimenta1,2
1Instituto de Patologia de Coluna, São Paulo, Brazil, 2University of California - San Diego, San Diego, CA, United States

Clinical: Cervical new motion preservation technologies
451  Image Friendly Peek-ceramic Cervical Total Disc Replacement: One Year Experience
L. Oliveira1, L. Marchi1, E. Coutinho1, L. Pimenta1,2
1Instituto de Patologia de Coluna, São Paulo, Brazil, 2University of California - San Diego, San Diego, CA, United States

Clinical: Complications
454  Complications after 4 Years Follow-up on Two Level AxiaLIF Procedures
L. Oliveira1, L. Marchi1, E. Coutinho1, L. Pimenta1,2
1Instituto de Patologia de Coluna, São Paulo, Brazil, 2University of California - San Diego, San Diego, CA, United States

Clinical: Complications
456  Complications on Lumbar Arthroplasty - What Can Be Done to Improve Results?
L. Oliveira1, L. Marchi1, E. Coutinho2, L. Pimenta1,3
1Instituto de Patologia de Coluna, São Paulo, Brazil, 2Institute for Advanced Spinal Research in California, São Paulo, Brazil, 3University of California - San Diego, San Diego, CA, United States

Clinical: Deformity
458  Alignment Failures Following Thoracic Pedicle Subtraction Osteotomies
V.C. Lafage1, F.J. Schwab1, B.N. Ungar2, S. Bess3, E. Klineberg4, R. Hostin5, D.C. Burton6, C.I. Shaffrey7, J.S. Smith7, International Spine Study Group
1NYU Hospital for Joint Diseases, Orthopaedics, New York, NY, United States, 2Massachusetts General Hospital, Orthopaedic Surgery, Boston, MA, United States, 3Rocky Mountain Scoliosis and Spine, Orthopaedic Surgery, Denver, CO, United States, 4University of California - Davis, Orthopaedic Surgery, Sacramento, CA, United States, 5Baylor Scoliosis Center, Orthopaedic Surgery, Plano, TX, United States, 6University of Kansas Medical Center, Orthopaedic Surgery, Kansas City, KS, United States, 7University of Virginia, Neurological and Orthopaedic Surgery, Charlottesville, VA, United States

Clinical: Fusion
461  Extreme Lateral Interbody Fusion (XLIF) for the Treatment of Degenerative Spondylolisthesis
L. Pimenta1, L. Marchi1, E. Coutinho1, L. Oliveira1
1Instituto de Patologia de Coluna, Sao Paulo, Brazil

Clinical: Prosthesis
467  Controlled ROM of a New Metal on Metal Lumbar TDR Placed by Lateral Approach
L. Pimenta1, L. Marchi1, E. Coutinho1, L. Oliveira1
1Instituto de Patologia de Coluna, Sao Paulo, Brazil

Clinical: Fusion
468  Why Lumbar Artificial Disc Replacements (A.D.R.) Fail
K.A. Pettine1
1The Spine Institute, Loveland, CO, United States

Clinical: Reimbursement and Coding, Regulatories
471  Metanalysis of how the Current FDA Has “Impacted Spine Innovation in the United States”
K.A. Pettine1
1The Spine Institute, Loveland, CO, United States

Clinical: Prosthesis
473  The Relationship between Global Range of Motion and Clinical Outcomes in Lumbar Disc Arthroplasty Patients
M.F. Gornet1, J.H. Peloza2, R.F. Dryer3, J.K. Burkus4, E.A. Jones5, J.A. Hipp5, N.D. Wharton5, F.W. Schranck1
1The Orthopedic Center of St. Louis, Spine Research Center, St. Louis, MO, United States, 2Center for Spine Care, Dallas, TX, United States, 3Central Texas Spine Institute, Austin, TX, United States, 4The Hughston Clinic, Columbus, GA, United States, 5Medical Metrics, Inc., Houston, TX, United States

Clinical: MIS decompression
479  At Two Years: One Institutions Experience with Transforaminal Decompression
D.T. Laich1, C.E. Talisse1, F.H. Geisler1
1Swedish, Neurological Surgery, Chicago, IL, United States

Basic science: Interspinous and ligamentoplasty
482  Restoration of Lumbar Spine Stability with an Interspinous Implant: An in vivo Biomechanical Study
R. Gunzburg1, M. Szpalski2, C.J. Colloca3, V. Kosmopoulos4, M. Afifi5, R.J. Moore6
1Eeuwfeestkliniek Hospital, Department of Orthopaedic Surgery, Antwerpen, Belgium, 2Hôpitaux Iris Sud/IRIS South Teaching Hospitals, Department of Orthopedics, Brussels, Belgium, 3Arizona State University, Department of Kinesiology, Tempe, AZ, United States, 4University of North Texas Health Science Center, Bone and Joint Research Center, Department of Orthopaedic Surgery, Fort Worth, TX, United States, 5University of Calgary, Faculty of Kinesiology, Calgary, AB, Canada, 6The Adelaide Centre for Spinal Research, Adelaide, SA, Australia

Basic science: Complications
486  Effectiveness of a Polyvinyl Alcohol Barrier to Reduce Risk of Tissue Damage during Anterior Spine Surgery
P. Jeffords1
1Resurgens Spine Center, Atlanta, GA, United States

Clinical: Prosthesis
487  Total Lumbar Disc Replacement with SB Charite-III Prosthesis: Chinese Experience with 2-10 Years Follow-up
S. Lu1, Y. Hai1, Q.Y. Wang1, N. Kang1, Y. Wang1, L. Zhou1, X.L. Chen1
1Capital Medical University, Orthopedics, Beijing, China

Clinical: Navigation, Image Guided Surgery and Robotic Assistance
488  Percutaneous Pedicle Screw Placement Using Intra-operative CT Navigation Is Safe and Accurate E.R.G.
Santos1, J.N. Sembrano1, A.N. Larson1, C.G. Ledonio1, D.W. Polly1
1University of Minnesota, Orthopaedics, Minneapolis, MN, United States

Clinical: Prosthesis
492  Relationship between Changes in Lumbar Lordosis and Clinical Outcomes Following Lumbar Disc Arthroplasty
M.F. Gornet1, J.H. Peloza2, R.F. Dryer3, J.K. Burkus4, J.A. Hipp5, E.A. Jones5, N.D. Wharton5, F.W. Schranck1
1The Orthopedic Center of St. Louis, Spine Research Center, St. Louis, MO, United States, 2Center for Spine Care, Dallas, TX, United States, 3Central Texas Spine Institute, Austin, TX, United States, 4The Hughston Clinic, Columbus, GA, United States, 5Medical Metrics, Inc., Houston, TX, United States

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
494  Percutaneous TLIF for Thoracic Spine Lesion
C.-H. Kao1,2
1CHI-MEI Foundation Hospital, Department of Surgery, Tainan, Taiwan, Republic of China, 2Southern Taiwan University of Technology, Center for General Education, Tainan, Taiwan, Republic of China

Clinical: Complications
497  Complications and Results of Revision Spine Surgery
N. Badlani1, C. Chang1, S. Rana1, Y.-P. Lee1, S. Garfin1
1UCSD Medical Center, Department of Orthopaedic Surgery, San Diego, CA, United States

Clinical: Nucleoplasty and Intradiscal therapies
503  CT Guided Real Time Plasma Energy Discoplasty for Symptomatic Cervical Degenerative Disc Disease
P. Pillay1, I. Tsou2, S. Vivek3
1Neuro Spine and Pain Center Singapore, Singapore, Singapore, 2Mt Elizabeth Hospital, Radiology, Singapore, Singapore, 3University of Chicago, Chicago, IL, United States

Clinical: Lumbar Fusion (i.e. MIS, TLIF, XLIF, Axial LIF, ALIF)
505  Minimally Invasive TifLIF (Trans Foraminal Inferior Facet Lumbar Interbody Fusion). A Technical Modification to the Traditional MIS TLIF: Surgical Anatomy and Prospective Case Series Study
M.E. Berbeo1, R.C. Diaz1, C. Cardenas1, L.M. Villalobos1, San Ignacio University Hospital and Javeriana University Neuroscience Group
1Hospital Universitario San Ignacio - Pontificia Universidad Javeriana, Neurosciences - Neurosurgery, Bogota, Colombia

Clinical: Complications
507  Spatial Correlation between Uncovertebral Joint and Intervertebral Foramen Considered when Performing Anterior Cervical Foraminotomy
S.-A. Park1, D.H. Han2
1Seoul Saint Mary's Hospital, The Catholic University of Korea, College of Medicine, Spine Center, Seoul, Korea, Republic of, 2Seoul Saint Mary's Hospital, The Catholic University of Korea, College of Medicine, Radiology, Seoul, Korea, Republic of

Clinical: Fusion
511  A Multi-center Retrospective Evaluation of a Cervical Integrated Interbody System
S. Elshihabi1, A. Cappuccino2, J. Garber3
1Columbus Neurosurgery, Columbus, GA, United States, 2Buffalo Spine Surgery, Lockport, NY, United States, 3NNI Research Foundation, Las Vegas, NV, United States

Clinical: MIS fusion-stabilization
512  Clinical Outcome of Two-level Percutaneous Pedicle Screw Fixation in Lumbar Degenerative Disease: A Preliminary Report
S.-G. Lee1
1Gachon University, Gil Medical Center, Neurosurgery, Incheon, Korea, Republic of

Clinical: Prosthesis
514  Three-level Lumbar Total Disc Replacement
J.E. Zigler1, R.D. Guyer1, D.D. Ohnmeiss2
1Texas Back Institute, Plano, TX, United States, 2Texas Back Institute Research Foundation, Plano, TX, United States

Clinical: Posterior dynamic pedicular stabilization
528  2 Year Results from a US IDE Trial Evaluating a Lumbar Posterior Dynamic Stabilization (PDS) System
N. Anand1, R.L. Rosemann2, M.P. Lorio2
1Cedars Sinai Medical Center, Spine Center, Los Angeles, CA, United States, 2Center for Spinal Disorders, Phoenix, AZ, United States, 3Bristol Regional Medical Center, Bristol, TN, United States

Clinical: Complications
534  Complication Risks of the Transforaminal Approach to the Lumbar Spine: An Anatomic and Patho-anatomic Risk Assessment
A.T. Yeung1, C.A. Yeung1, Y. Zheng1, San Diego Spine Study Group
1Desert Institute for Spine Care, Phoenix, AZ, United States

Clinical: Prosthesis
536  ProDisc -C Nova Total Disc Replacement - First Results
R. Bertagnoli1
1ProSpine, Straubing, Germany

Clinical: Identifying and treating the pain generator
538  In-vivo Endoscopic Visualization of Patho-anatomy in Painful Degenerative Conditions of the Lumbar Spine
A.T. Yeung1, C.A. Yeung1
1Desert Institute for Spine Care, Phoenix, AZ, United States

Clinical: Interspinous and ligamentoplasty
547  Dynamic Inter Spinosus Stabilization in Lumbar Discectomy. 4 Years of Follw up
A.A. Reyes-Sánchez1
1National Institute of Rehabilitation, Special Surgery Division, Mexico City, Mexico

Clinical: Trauma: fractures and spinal cord repair
551  Transpedicular Lag-screwing Fixation for Unstable Hangman Fractures
W. Jiang1, J. Yuan1, X. Li1, H. Yang1, T. Tang1
1The First Affiliated Hospital of Soochow University, Orthopedic Department, Suzhou, China

Clinical: Navigation, Image Guided Surgery and Robotic Assistance
553  Diagnostic Efficacy of Myelo-CT for Surgical Confirmation in Degenerative Lumbar Spine Diseases; Comparison with MRI
K.-S. Ryu1, H.-J. Lee1, K.-Y. Lee1, C.-K. Park1
1Seoul St. Mary's Hospital, The Catholic University, Seoul, Korea, Republic of

Basic science: Biomechanics / Basic Science
566  The Effects of Nonenzymatic Glycation on Invertebral Disc Material Behavior and Tissue Hydration
A. Sharan1, S.D. Tang2
1Montefiore Medical Center/Albert Einstein College of Medicine, Orthopedic Surgery, New York, NY, United States, 2UCSF, Orthopedic Surgery, San Francisco, CA, United States

Clinical: Fusion
569  “Adjacent” Disc Degeneration of L3/4 after Fusion of L5/S1. A Matched-cohort Analysis
A. Tuschel1, T. Vanicek2, P. Becker2, C. Eder2, M. Ogon2
1Orthopaedic Hospital Vienna Speising, Vienna, Austria, 2Orthopaedic Hospital Speising, Spine Unit, Vienna, Austria

Clinical: MIS decompression
574  The Muscular Injury Makes a Difference. A Study with 36 Months of Follow up
C.F. Arias Pesantez1, C.R. Arias Solano1
1Del Rio University Hospital, Minimally Invasive Spinal Surgery, Cuenca, Ecuador

Clinical: Posterior dynamic pedicular stabilization
581  Novel Indication for Posterior Dynamic Stabilization Device: Correction of Rotational Instability after Total Disc Replacement
W.K. Cheng1, D.K. Palmer1, V. Jadhav1
1Loma Linda University, Department of Orthopaedic Surgery, Loma Linda, CA, United States

Clinical
586  Early results of the NuNec cervical disc replacement
M. Shibayama1, F. Ito1, Y. Miura1, S. Nakamura1, S. Ikeda1
1Aichi Spine Institute, Aichi, Japan

Clinical
587  Innovation in Spine Surgery: Miracles of MMG
J. Jogani1, C. Wybo1, S. Bartol2
1Wayne State University, Dept. of Biomedical Engineering, Detroit, MI, United States, 2Henry Ford Health System, Detroit, MI, United States