Annual Forum ’19 E-Posters

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E-Posters Directory

We invite you to review the E-Posters by clicking the links below. (Note that these links will open in a new window or tab. To return to this directory, simply close the new window or tab.)

E-Poster #1: Validity of Patient Health Questionnaire-9 in Minimally Invasive Lumbar Interbody Fusion
Nathaniel W. Jenkins, MS; James M. Parrish, MPH; Nadia Hrynewycz, BS; Thomas Brundage, BS; Joon Yoo, BA; and Kern Singh, MD

Rush, Chicago, IL

E-Poster #2: Are Preoperative Phq-9 Scores Predictive of Postoperative Outcomes Improvement Following Anterior Cervical Discectomy and Fusion?
James M. Parrish, MPH; Nathaniel W. Jenkins, MS; Thomas Brundage, BS; Nadia Hrynewycz, BS; Joon Yoo, BA; and Kern Singh, MD

Rush, Chicago, IL

E-Poster #3: Indirect Decompression Failure after Lateral Lumbar Interbody Fusion: Reported Failures and Predictive Factors; Systematic Review
Sertac Kirnaz, MD; Rodrigo Navarro-Ramirez, MD; Jiaoo Gu, MD; Christoph Wipplinger, MD; Franziska Schmidt, MD; and Roger Hartl, MD

Weill Cornell Medicine, New York, NY

E-Poster #4: Factors Associated with Achieving a Clinically Significant Improvement in Patients Undergoing Minimally Invasive Lumbar Decompression Surgery
Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #5: Promis Physical Function may be more Relevant for Lumbar Spinal Disorders than for Cervical Spinal Disorders
Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #6: Postoperative Satisfaction following Lumbar Spinal Fusion Surgery: Patient Expectation versus Actuality
Nathaniel W. Jenkins, MS; James M. Parrish, MPH; Nadia Hrynewycz, BS; Thomas Brundage, BS; Joon Yoo, BA; and Kern Singh, MD

Rush, Chicago, IL

E-Poster #7: Comparison of Outcomes of C-arm Versus O-arm in Transarticular Screw Fixation for Atlantoaxial Instability
Tomohisa Inoue; Keiji Wada; and Ken Okazaki

Tokyo Womens Medical University, Shinjuku-ku, Tokyo, Japan

E-Poster #8: Laterally Placed Expandable Interbody Spacers Improve Radiographic and Clinical Outcomes: A 1-year Follow-up Study
Yan Li, MD, PhD1; Zheng Huang, MD, PhD2; James Towner, MD1; Yan Icy Li, PhD1; Amber Edsall, BS3; and Charles Ledonio, MD, CCRP3

Rochester Medical Center School of Medicine and Dentistry, Rochester, NY1; Guanghua Hospital, Shanghai, China2; and Globus Medical, Inc., Audubon, PA3

E-Poster #9: The Rate of Fusion for Stand-alone Lateral Lumbar Interbody Fusion: A Systematic Review
Mustfa Manzur, MPH, MS1; Michael Steinhaus, MD2; Sohrab Virk, MD, MBA2; Bridget Jivanelli, MLIS2; Avani Vaishnav, MBBS2; Steven McAnany, MD2; Sravisht Iyer, MD2; Todd Albert, MD2; Catherine Himo Gang, MPH2; and Sheeraz Qureshi, MD, MBA2
Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA1 and Hospital for Special Surgery, New York, NY2

E-Poster #11: Double Cement Application Technique for Balloon Kyphoplasty—Technique Description and Preliminary Report
Yukihiro Nakagawa, MD, PhD; Mamoru Kawakami, MD, PhD; Masatoshi Teraguchi, MD. PhD; Ryohei Kagotani; and Yoshimasa Mera

Wakayama Meidical University Kihoku Hospital, Wakayama City, Japan

E-Poster #12: Trends in Utilization of Intraoperative Neuromonitoring during Anterior Cervical Spine Surgery
Darren Chen, BA; Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #14: Comparative Clinical Analysis of OLIF51 versus MIS-TLIF for Single to Multi-level Lumbosacral Fusion
Yoshihisa Kotani, MD, PhD1; Hiroyuki Tachi, MD2; Yumejiro Nakamura, MD2; and Takanori Saito, MD3
Kansai Medical University Medical Center, Moriguchi, Osaka, Japan1; Hokkaido University Graduate School of Medicine, Sapporo, Japan2; and Kansai Medical University Hospital, Hirakata, Osaka, Japan3

E-Poster #16: Lateral Lumbar Interbody Fusion with Expandable Spacers have Lower Subsidence Rate versus Static Interbody Spacers: A Radiographic and Clinical Outcomes Study with 2-year Follow-up
Yan Li, MD, PhD1; Richard Frisch, MD2; Zheng Huang, MD, PhD3; James Towner, MD1; Yan Icy Li, PhD1; Samantha Greeley, BS4; and Charles Ledonio4
Rochester Medical Center School of Medicine and Dentistry, Rochester, NY1; Southeastern Spine Institute, Mt Pleasant, SC2; Guanghua Hospital, Shanghai, China3; and Globus Medical, Inc., Audubon, PA4

E-Poster #18: Prosidyan Fibergraft Putty (Bioactive Glass) as a Stand-Alone Interbody Graft Choice in XLIF: Radiographic and Clinical Outcomes
Isabel Smith; Suzanne Kent; David H. Kim, MD; and Brian Kwon, MD
New England Baptist Hospital, Boston, MA

E-Poster #21: A Retrospective Review of Transforaminal Lumbar Interbody Fusion Patients Treated with Expandable and Static Spacers
Adam Kremer, MD1; Jefferson Alferink1; Stacie Wynsma1; Torrey Shirk, BA2; and Charles Ledonio2
The Brain and Spine Center, Holland, MI1 and Globus Medical, Inc., Audubon, PA2

E-Poster #23: Comparison Between Standard Minimally Invasive Transforaminal Lumbar Interbody Fusion and Novel Cannulated Technique: Disc Preparation Effectiveness
Choll Kim, MD, PhD1; Matthew Hannibal, MD2; Mark Scioli, MD3; Michael Steinmetz, MD4; Kevin Stevenson, MD5; Jonathan Mahoney, BS6; Jonathan Harris, MS6; Jorge Gonzalez, BS7; and Brandon Bucklen, PhD6
The Spine Institute of San Diego, San Diego, CA1; Caldwell-UNC, Lenoir, NC2; Center for Orthopedic Surgery, Lubbock, TX3; Cleveland Clinic Foundation, Cleveland, OH4; Optim Medical Center, Reidsville, GA5; Globus Medical, Inc., Audubon, PA6; and Drexel University, Philadelphia, PA7

E-Poster #25: Minimally Invasive Sacroiliac Joint Fusion: One Year Clinical and Radiographic Outcomes following Surgery with Decortication and Threaded Implant Fixation
Christopher Boone, MD

Bellevue Bone & Joint Physicians, Bellevue, WA

E-Poster #26: Should the Euroqol-five Dimensions Replace the Oswestry Disability Index when Tracking Lumbar Tubular Microdecompression Outcomes?
Ziyad O. Knio, BS; Trent A. VanHorn, BS; and Tadhg J. O'Gara, MD

Department of Orthopaedic Surgery, Wake Forest School of Medicine, Winston-Salem, NC

E-Poster #28: The Seated Lateral Radiograph is a Better Stress View of the Lumbar Spine compared to Standing Flexion
J. Alex Sielatycki, MD1; Clinton Devin, MD2; and Scott Hodges, D.O.1
Center for Sports Medicine and Orthopaedics, Chattanooga, TN1 and Steamboat Spine Center, Steamboat Springs, CO2

E-Poster #29: Does the Accuracy of Pedicle Screw Placement Differ Between the Attending Surgeon and Resident in Navigated Robotic-assisted Minimally Invasive Spine Surgery?
David Wallace, MD1; Arnold Vardiman, MD1; Grant Booher, MD1; Neil Crawford, PhD2; Jessica Riggleman, BS2; Samantha Greeley, BS2; and Charles Ledonio, MD, CCRP2
University of Texas Health San Antonio, San Antonio, TX1 and Globus Medical, Inc., Audubon, PA2

E-Poster #30: Intraoperative Neuromonitoring for Lateral Lumbar Interbody Fusion: An Intra-operative Protocol to Decrease Postoperative Neurologic Deficit
Nicole Record, DO1; Robert Eastlack, MD2; Stacie Tran3; Daniel Thibaudeau, MD1; Alissa Carnelian2; Kristina Brady2; Michael Jelousi, BS1; Behrooz Akbarnia, MD1; and Gregory Mundis, MD2

San Diego Spine Foundation, San Diego, CA1; Scripps Clinic, San Diego, CA2; and San Diego Center for Spinal Disorders, San Diego, CA3

E-Poster #33: Stem Cell Injections for Axial Back Pain: A Systematic Review of Associated Risks and Complications with Case Illustration of Diffuse Hyperplastic Gliosis Resulting in Cauda Equina Syndrome
Salah Aoun, MD; Valery Peinado Reyes, PA; Tarek El Ahmadieh, MD; and Carlos Bagley, MD

The University of Texas Southwestern, Dallas, TX

E-Poster #34: Cost Transparency: Are we adding Confusion?
David Casper, MD1; Michelle Fiorella2; Alan Hilibrand, MD3; Alex Vaccaro, MD, PhD, MBA3; Kris Radcliff, MD3
Cleveland Clinic, Cleveland, OH1; Jefferson Medical College, Philadelphia, PA2; and The Rothman Insitute, Philadelphia, PA3

E-Poster #35: Analysis of Scoliosis-specific Information on Social Media: Is Social Media the new Source of Online Medical Information and Support?
David Truumees; Ashley Duncan, RN, MBA; Kano Mayer, MD; Devender Singh, PhD; Matthew Geck, MD; and Eeric Truumees, MD

Seton Spine and Scoliosis Center, Austin, TX

E-Poster #36: Navigated Robotic-guided Pedicle Screws Placed Successfully in Single-position Lateral Lumbar Interbody Fusion
Kade Huntsman, MD1; Leigh Ahrendtsen, MBA2; Jessica Riggleman, BS2; and Charles Ledonio, MD, CCRP2
Salt Lake Orthopaedic Clinic, Salt Lake City, UT1 and Globus Medical, Inc., Audubon, PA2

E-Poster #37: The Effect of Exparel (injectable Liposomal Bupivacaine) on Length of Stay after Outpatient Medialized Fusion
Nitin Khanna, MD; Michael Krzyskowski, PA-C

Orthopaedic Specialists of Northwest Indiana, Munster, IN

E-Poster #38: Minimally Invasive Scoliosis Surgery with Trans-kambin Posterior Oblique Lateral Lumbar Interbody Fusion: Single Surgeon Feasibility Study
Hamid Abbasi, MD PhD FACS FAANS

Inspired Spine-Tristate Brain & Spine Institute, Alexandria, MN

E-Poster #39: New Decompression Device Facilitating a Smaller Procedure in Anterior Cervical Corpectomy and Fusion: Case Series
Michael Millgram, MD1; Daniel Kolsky, BMedSc1; Richard Guyer, MD2; Ran Harel, MD3; Ely Ashkenazi, MD1
Assuta Medical Center, Tel Aviv, Israel1; Texas Back Institute, Plano, TX2; and Sheba Medical Center, Ramat Gan, Israel3

E-Poster #43: Effect of Race, Age and Gender on Lumbar Muscle Volume and Fat Infiltration in Degenerative Spine
Tetsuro Hida, MD1; Robert Eastlack, MD2; Tokumi Kanemura, MD3; Gregory Mundis Jr., MD2; Shiro Imagama, MD1; and Behrooz Akbarnia, MD4
Nagoya University, Nagoya, Japan1; Scripps Clinic, San Diego, CA2; Aichi Konan, Aichi, Japan3; and San Diego Spine Foundation, San Diego, CA4

E-Poster #44: Transforaminal Endoscopic Lumbar Discectomy for Large Central Disc Herniation
Kuo-Tai Chen1; Sagar Sharma2; and Jin-Sung Kim, PhD2
Chang Gung Memorial Hospital Chia-Yi, Puzi, Taiwan1 and Seoul St. Mary's Hospital, Seoul, Korea, Republic of2

E-Poster #46: Characterizing the Surgeon Learning Curve in Minimally Invasive Spine Surgery: Does the Evidence Account for User Experience? A Systematic Literature Review
Chris Ferry, MS

Cooper Medical School of Rowan University, Camden, NJ

E-Poster #47: Initial Single-institution Experience with a Novel Robotic-navigation System for Thoracolumbar Pedicle Screw and Pelvic Screw Placement with 643 Screws
Deeptee Jain, MD1; Jordan Manning, B.S.2; Elizabeth Lord, MD3; Themistocles Protopsaltis, MD2; Yong Kim, MD2; Aaron Buckland, MBBS2; John Bendo, MD2; Charla Fischer, MD2; and Jeffrey Goldstein, MD2

Washington University, St. Louis, MO1; New York University, New York, NY2; and University of California, Los Angeles, Los Angeles, CA3

E-Poster #48: Prospective Study on Workflow Impediment and Screw Accuracy Assessment following Pedicle Screw Placement using Robot Assisted Neuronavigation
Komal Naeem, MD; Michele Wang, BS; and Randall Porter, MD

Barrow Neurological Institute, Phoenix, AZ

E-Poster #49: Laterally Placed Expandable Interbody Spacers with Adjustable Lordosis Improved Radiographic and Clinical Outcomes: A 2-year Follow-up Study
Yan Michael Li, MD1; Zheng Huang, MD, PhD2; James Towner, MD1; Yan Icy Li, PhD1; Jessica Riggleman, BS3; and Charles Ledonio, MD, CCRP3

Oncology University of Rochester Medical Center School of Medicine and Dentistry, Rochester, NY1; Guanghua Hospital, Changning Qu, China2; and Globus Medical, Inc., Audubon, PA3

E-Poster #50: Cross Sectional Analysis of Scoliosis-specific Information on the Internet: Are Patients Being Misinformed?
David Truumees; Ashley Duncan, MBA, RN; Kano Mayer, MD; Devender Singh, PhD; Matthew Geck, MD; and Eeric Truumees, MD
Seton Spine and Scoliosis Center, Austin, TX

E-Poster #51: The Effect of a Lordotic Expandable Interbody Implant in Comparison to a Lordotic Fixed Interbody Implant in Minimally Invasive Spine Surgery: Its Effect on Sagittal Alignment and Restoration of Disc Height and Foraminal Height
Donald Kucharzyk, DO and Dushan Budimir, MS
DK Orthopedics Center for Spine Minimally Invasive Surgery, Crown Point, IN

E-Poster #53: Minimally Invasive Direct Thoracic Interbody Fusion (mis-dtif): Technical Notes of a Single Surgeon Study
Hamid Abbasi, MD PhD FACS FAANS
Inspired Spine-Tristate Brain & Spine Institute, Alexandria, MN

E-Poster #55: Banana-shaped Expandable Articulating Interbody Device Restores Disc Height and Lumbar Lordosis in Transforaminal Lumbar Interbody Fusion for Degenerative Lumbar Spine Disease
Anthony Russo, MD1; Katelyn Stetzner1; Torrey Shirk, BA2; and Charles Ledonio2
Montana Orthopedics, Butte, MT1 and Globus Medical, Inc., Audubon, PA2

E-Poster #57: Minimally Invasive Sacroiliac Joint Fusion using a Novel Hydroxyapatite-coated Screw System Improves Functional Outcomes in Patients with Sacroiliitis at Two Year Follow-up
Alex Mohit, MD, PhD1; Jessica Riggleman, BS2; and Charles Ledonio, MD, CCRP2
South Sound Neurosurgery, Puyallup, WA1 and Globus Medical, Inc., Audubon, PA2

E-Poster #59: Clinical and Radiological Outcomes of Trans-kambin Posterior Oblique Lateral Lumbar Interbody Fusion
Hamid Abbasi, MD PhD FACS FAANS

Inspired Spine-Tristate Brain & Spine Institute, Alexandria, MN

E-Poster #60: Modified Transforaminal Thoracic Interbody Fusion (TTIF) Approach: Technique Description and Case Series
Michael Millgram, MD1; Daniel Kolsky, BMedSc1; William Beutler, MD2; Richard Guyer, MD3; Ely Ashkenazi, MD1

Assuta Medical Center, Tel Aviv, Israel1; Pennsylvania Spine Institute, Harrisburg, PA2; and Texas Back Institute, Plano, TX3

E-Poster #61: Pre-psoas Oblique Lateral Interbody Fusion - Functional Outcomes with 33 Cases
Malika Bhargava, MD, ME, MBA; Komal Naeem, MD; and Randall Porter

Barrow Neurological Institute, Phoenix, AZ

E-Poster #63: Safety and Reproducibility of Total Cervical Disc Replacement in an Ambulatory Surgery Center
Nitin Khanna, MD; Michael Krzyskowski, PA-C

Orthopaedic Specialists of Northwest Indiana, Munster, IN

E-Poster #64: Comparison between Standard Minimally Invasive Transforaminal Lumbar Interbody Fusion and Novel Cannulated Technique: Operative Time and Instrument Passes
Choll Kim, MD, PhD1; Matthew Hannibal, MD2; Mark Scioli3; Michael Steinmetz, MD4; Kevin Stevenson, MD5; Jonathan Mahoney, BS6; Jonathan Harris, MS6; Jorge Gonzalez, BS7; and Brandon Bucklen, PhD6
The Spine Institute of San Diego, San Diego, CA1; Caldwell-UNC, Lenoir, NC2; Center for Orthopedic Surgery, Lubbock, TX3; Cleveland Clinic Foundation, Cleveland, OH4; Optim Medical Center, Reidsville, GA5; Globus Medical, Inc., Audubon, PA6; and Drexel University, Philadelphi, PA7

E-Poster #66: Single Position Surgery for Pre-psoas (Oblique) Lumbar Interbody Fusion and Pedicle Screw Fixation using Neuronavigation—Clinical Outcomes and Screw Accuracy Assessment
Komal Naeem, MD; Malika Bhargava, MD; and Randall Porter, MD

Barrow Neurological Institute, Phoenix, AZ

E-Poster #67: How does Minimally Invasive Lumbar Decompression Surgery Impact Lumbar Muscle Health?
Sohrab Virk, MD, MBA1; Avani Vaishnav, MBBS1; Jung Kee Mok, BS2; Joshua Wright-Chisem, MD1; Catherine Himo Gang, MPH1; Sravisht Iyer, MD1; Steven McAnany, MD1; Todd Albert, MD1; and Sheeraz Qureshi1
Hospital for Special Surgery, New York, NY1 and Weill Cornell Medical College, New York, NY2

E-Poster #69: Does Degree of Lordosis of Graft Cage Used in Minimally Invasive Spine Fusion Surgery Affect foraminal Height?
Yahya Othman; Jonathan Elysee; Renaud Lafage; Virginie Lafage, PhD; Avani Vaishnav, MBBS; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; Catherine Himo Gang, MPH; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #70: Benefits of Medical Optimization before Thoracolumbar Three-Column Osteotomies: An Analysis of 618 Patients
Andre Samuel, MD; Noor Maza, BS; Avani Vaishnav, MBBS; Francis Lovecchio, MD; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; Catherine Himo Gang, MPH; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #71: Which NDI Domains Best Predict Change in Physical Function in Patients Undergoing Cervical Spine Surgery?
Steinhaus Michael, MD1; Karim Shafi, MD1; Sravisht Iyer, MD1; Francis Lovecchio, MD1; Daniel Stein, BS1; Thomas Ross, RN1; Jingyan Yang, MS1; Virginie Lafage, PhD1; Todd Albert, MD1; and Han Jo Kim, MD2

Hospital for Special Surgery, New York, NY1 and Hospital for Special Surgery, New York, NC2

E-Poster #72: Does Pre-Operative Muscle Health Impact Pre-Operative Health Related Quality of Life Scores for Patients with Lumbar Pathology?
Sohrab Virk, MD, MBA; Avani Vaishnav, MBBS; Jung Kee Mok, BS; Joshua Wright-Chisem, MD; Catherine Himo Gang, MPH; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; and Sheeraz Qureshi


Hospital for Special Surgery, New York, NY

E-Poster #73: Increased Fatty Atrophy and Decreased Lumbar Muscle Cross Sectional Area throughout the Lumbar Spine associated with Spondylolisthesis
Sohrab Virk, MD, MBA1; Milan Sandhu, BS2; Avani Vaishnav, MBBS1; Sravisht Iyer, MD1; Steven McAnany, MD1; Todd Albert, MD1; Catherine Himo Gang, MPH1; and Sheeraz Qureshi, MD, MBA1
Hospital for Special Surgery, New York, NY1 and Weill Cornell Medical College, New York, NY2

E-Poster #74: What Factors Influence Citation Count in Spine Literature? A Multi-Variate Analysis of Factors associated with Citation Count for Articles Published in 2013
Sohrab Virk, MD, MBA; Avani Vaishnav, MBBS; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; Catherine Himo Gang, MPH; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #75: Preoperative Radiographic Assessment Predicts Success of Cervical Disc Replacement Implant Positioning
Yahya Othman; Russel Huang, MD; Philip York, MD; Todd Albert, MD; Avani Vaishnav, MBBS; Sravisht Iyer, MD; Steven McAnany, MD; Catherine Himo Gang, MPH; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #76: MIS Laminectomy in Patients with Compensated and Decompensated Sagittal Imbalance
Andre Samuel, MD; Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #77: Impact of Pre-Operative Pain Scores on Post-Operative Outcomes in Patients undergoing Lumbar Microdiscectomy
Sohrab Virk, MD, MBA1; Jung Kee Mok, BS2; Avani Vaishnav, MBBS1; Catherine Himo Gang, MPH1; Sravisht Iyer, MD1; Steven McAnany, MD1; Todd Albert, MD1; and Sheeraz Qureshi1
Hospital for Special Surgery, New York, NY1 and Weill Cornell Medical College, New York, NY2

E-Poster #78: Rethinking the way that we Investigate Paralumbar Muscle Health: The Value of Sagittal Cross-Sectional Area of Lumbar Muscle
Sohrab Virk, MD, MBA; Yahya Othman; Avani Vaishnav, MBBS; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; and Sheerez Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #79: Pre-operative Muscle Health Impacts the time it takes to Reach Minimally Clinically Important Differences in Health-Related Quality of Life Scores for One Level Lumbar Fusions
Sohrab Virk, MD; Avani Vaishnav, MBBS; Joshua Wright-Chisem, MD; Jung Kee Mok, BS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #80: Strategies Employed for Revision Cervical Disc Arthroplasty: A Review of a Database of Complications
Sohrab Virk, MD; Yoshihiro Katsuura, MD; Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #81: Cervical Spine Steroid Injections for Delay of Surgery for Cervical Spondylotic Myelopathy
Andre Samuel, MD; Avani Vaishnav, MBBS; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; Catherine Himo Gang; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #82: A Novel Preoperative Radiographic Scoring System to Predict Postoperative Outcomes in Patients undergoing Cervical Disc Replacement Surgery
Yahya Othman; Russel Huang, MD; Philip York, MD; Todd Albert, MD; Avani Vaishnav, MBBS; Steven McAnany, MD; Sravisht Iyer, MD; Catherine Himo Gang, MPH; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #83: Recurrent Spondylolisthesis after Transforaminal Lumbar Interbody Fusion with an Expandable Cage: Its Incidence and Impact on Clinical Outcomes
Yahya Othman; Avani Vaishnav, MBBS; Sravisht Iyer, MD; Steven McAnany, MD; Todd Albert, MD; Catherine Himo Gang, MPH; and Sheeraz Qureshi, MD, MBA

Hospital for Special Surgery, New York, NY

E-Poster #85: What is Actually Happening inside the “Cone of Economy”: An Advanced Method to Quantify the “Cone of Economy”
Ram Haddas; Alexander Satin, MD; and Isador Lieberman, MD
Texas Back Institute, Plano, TX

E-Poster #91: Impact of Instrument Navigation on C-Arm Radiation and Time during Spinal Procedures: A Clinical Evaluation
Timothy Wang, MD1; Vikram Mehta, MD MPH1; Farah Hamouda, BS2; Eric Sankey, MD1; Chester Yarbrough, MD1; Robert Lark, MD1; and Muhammad Abd-El-Barr, MD PhD1
Duke University Medical Center, Durham, NC1 and TrackX Technology, LLC, Chapel Hill, NC2

E-Poster #92: High Axial Facet Angle Correlates With Poor Fluoroscopic Percutaneous Pedicle Screw Placement
Guang-ting Cong, MD1; James Dowdell, MD2; Avani Vaishnav, MBBS2; Catherine Himo Gang, MPH2; Steven McAnany, MD2; Sravisht Iyer, MD2; Todd Albert2; Sheeraz Qureshi, MD, MBA2

Icahn School of Medicine at Mount Sinai, New York, NY1 and Hospital for Special Surgery, New York, NY2

E-Poster #93: Safety and Feasibility of Utilization of MIS Techniques in Revision Lumbar Spine Surgery
Andre Samuel, MD; Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #94: Coregistration of Spinal Preoperative and Intraoperative CT Data using Elastic Image Fusion, Evaluation of Planned Pedicle Screw Trajectories for Intraoperative Placement with Image Guided Surgery
Franziska Schmidt, MD1; Mary Mullally2; Martin Lohmann2; Patrick Hiepe2; Sertac Kirnaz1; Swathi Chidambaram1; Christoph Wipplinger1; and Roger Härtl1
Weill Cornell, New York, NY1 and Brainlab, Brainlab, Germany2

E-Poster #95: Is There a Difference in Early Outcomes between Stand-Alone Lateral Lumbar Interbody Fusions versus Lateral Lumbar Interbody Fusions with Posterior Supplemental Fixation?
Sohrab Virk, MD; Avani Vaishnav, MBBS; Catherine Himo Gang, MPH; Steven McAnany, MD; Sravisht Iyer, MD; Todd Albert, MD; and Sheeraz Qureshi

Hospital for Special Surgery, New York, NY

E-Poster #98: The Influence of Preoperative T2-MRI findings on the Initial Presentation and Outcomes of with Lumbar Stenosis Undergoing MIS-Tubular Decompression
Sertac Kirnaz, MD; Rafael Sugino, MD; Christoph Wipplinger, MD; Franziska Schmidt, MD; Apostolos John Tsiouris, MD; and Roger Hartl, MD

Weill Cornell Medicine, New York, NY

E-Poster #99: Effect of Myelopathy on Outcomes after Cervical Disc Replacement: A Study of a Local Patient Cohort and a Large National Cohort
Andre Samuel, MD1; Avani Vaishnav, MBBS1; Catherine Himo Gang, MPH1; Steven McAnany, MD1; Sravisht Iyer, MD1; Todd Albert, MD1; Harold Moore, BS2; and Sheeraz Qureshi1

Hospital for Special Surgery, New York, NY1 and Weill Cornell Medical College, New York, NY2