E-Poster Library 2026

000022 Complications & Epidemiology Preoperative cervical vertebral Hounsfield units predict titanium mesh cage subsidence after anterior cervical corpectomy and fusion S. Wang

000025 Complications & Epidemiology Safety of Lumbar Decompression Surgery in Patients Receiving Chronic Oral Anticoagulation: A Propensity Score–Matched Study H. Takaoka

000029 Trauma Ageing and BMI in focus: rethinking risk assessment for ver-tebral fragility and pedicle screw loosening in older adults J. Li

000062 Tumours & Infection Early Discontinuation of Prophylactic Antibiotics is Safe in Spine Surgery: A Nationwide Cohort Study S. Park

000063 Basic Science & Economics Chondrocyte senescence in facet joint cartilage of adolescent idiopathic scoliosis and the therapeutic potential of senolytic drugs P. Brigato

000066 Growing Spine Lumbar Muscle Morphology and Composition in Adolescent Idiopathic Scoliosis: A Magnetic Resonance Study S. De Salvatore

000071 Adult Deformity Reliability and Accuracy of Indirect T1 Slope Estimation Methods: A Three-Observer Radiographic Study of Cervical Sagittal Alignment I. Dot Pascuet

000077 Tumours & Infection Endoscopic-Assisted Anterior Cervical Odontoidectomy with Preservation of the Atlas Anterior Arch for Odontoid Neoplasms L. Shian

000089 Degenerative Thoracolumbar Comparison of Radiographic and Clinical Outcomes between Bone Morphologic Protein-2 and Tricalcium Phosphate plus Iliac Bone Graft in Single level Extreme Lumbar Interbody Fusion Surgery W. Sutipornpalangkul

000103 Tumours & Infection Development and Validation of a Machine Learning-Guided Model to Predict ERAS Adherence after Surgery for Spinal Metastases J. zhou

000106 Tumours & Infection Benefits of Pre-Operative Embolization in Surgery for Hypervascular Spinal Tumors: A Meta-Analysis A. Sebaaly

000107 Adult Deformity Types of Pelvic Fixation and Their Influence on Pelvic Incidence Change After Surgery for Adult Spinal Deformity: A Retrospective Analysis A. Sebaaly

000114 Growing Spine Can machine learning optimize fusion selection in thoracic adolescent idiopathic scoliosis? – a dual-center cohort study with external validation S. Ohrt-Nissen

000117 Degenerative Thoracolumbar Differences in outcomes of full endoscopic lumbar discectomy for lumbar disc hernia depending on the operation period Y. Nanjo

000120 Adult Deformity Pedicle Subtraction Osteotomy in Lumbo-Sacral Fusion Surgery: Radiographic Evaluation of Lumbar Lordosis Behavior with Pre-Bent Rods C. Silvestre

000122 Degenerative Thoracolumbar Fusion-Avoiding Unilateral Biportal Endoscopic Decompression for Lumbar Juxta-Facet Cysts: Ipsilateral vs Contralateral Corridor Comparison Y. Park

000130 Trauma Effects of Sarcopenia on Osteoporotic Vertebral Fracture Occurrence S. Park

000133 Growing Spine Investigation of Cross-Sectional Thickness of Paraspinal Muscles in Idiopathic Scoliosis Using 3D Ultrasound and Magnetic Resonance Imaging T.T.Y. Lee

000137 Trauma Epidemiology and examinations for osteoporotic vertebral fracture in the elderly patients (J-BOLD study): cross-sectional study using large-scale claim database T. Nakamae

000138 Trauma Factors associated with mortality among older patients with osteoporotic vertebral fracture (J-BOLD study): A nested case-control study using large-scale claim database T. Nakamae

000143 Trauma The Impact of Surgical Timing on Neurological Recovery in Traumatic Thoracic and Thoracolumbar Spinal Cord Injury: A Systematic Review and Meta- analysis M. Loiola Magalhães Alves

000146 Growing Spine Prognostic value of Mehta angle in mild idiopathic adolescent scoliosis A. Gharbi

000177 Adult Deformity The Hybrid Bipolar Construct in Adult Spinal Deformity: Preliminary Results & Surgical Technique H. Cornette

000178 Adult Deformity Stand-Alone Lateral Lumbar Interbody Versus Circumferential Fusion in Adult Scoliosis: A Comparative Analysis of Reoperation Risk P.A. Rocha Torres

000179 Degenerative Thoracolumbar Transverse Abdominis Plane block in eXtreme Lateral Interbody Fusion surgery: a prospective, randomized pilot feasibility trial S. Bamps

000181 Growing Spine Immediate Biomechanical Effects of a 3D-Printed Scoliosis Brace on Coronal and Spinopelvic Alignment in Adolescent Idiopathic Scoliosis P.A. Rocha Torres

000188 Degenerative Thoracolumbar Analysis of Risk Factors for Adjacent Segment Facet Joint Degeneration Following Lumbar Fusion: A 10-Year Retrospective Cohort Study P. xue

000192 Growing Spine Ultrasound Assessment of Static and Dynamic Spinal Flexibility in Mild to Moderate Adolescent Idiopathic Scoliosis T.T.Y. Lee

000194 Degenerative Thoracolumbar Does oblique lumbar interbody fusion induce lordosis or kyphosis? W. dechun

000208 Adult Deformity Intraoperative ultrasound visualization of paravertebral anatomy in the retroperitoneal space during Mini-Open OLIF and Lateral ALIF in lateral decubitus position E. Archavlis

000226 Adult Deformity Phase-Dependent Psychological Mediation of Disability Improvement After a Home-Based Exercise Program for Adult Spinal Deformity: A Multicenter Prospective Cohort Study H. Taniwaki

000233 Degenerative Thoracolumbar Clinical and Radiologic Outcomes of Two Different Direct Decompression Techniques: Endoscopic-Assisted OLIF-360 MIS Versus OLIF-360 Mini-Open: A Matched-Pair Comparison Analysis E. Archavlis

000256 Degenerative Thoracolumbar YouTube Exercise Videos for Lumbar Stenosis and Spondylolisthesis: a Scoping Review of their Quality, Reliability, and Validity H.L. Li

000264 Degenerative Thoracolumbar Evaluation of Bladder Function and Quality of Life in Surgically Treated Patients with Cauda Equina Syndrome: An Ambispective Study S. DHATT

000265 Adult Deformity Ultrasound examination of the erector spinae muscle in patients with thoracic scoliosis after dynamic and rigid fixation A. Kazmin

000266 Degenerative Thoracolumbar Measuring Surgical Outcomes of delayed presented Cauda Equina Syndrome Patients using a new scoring system: Analysis of 109 patients S. DHATT

000271 Degenerative Thoracolumbar Paraspinal Musculature and Adjacent Segment Disease After Lumbar Fusion: A systematic review and meta-analysis of fusion with and without posterior instrumentation S. Keraidi

000275 Tumours & Infection Cement-augmented pedicle screws reduce screw loosening in elderly patients with osteoporosis undergoing instrumented fusion for pyogenic vertebral osteomyelitis S. Asuka

000277 Complications & Epidemiology Does a one-time guideline-based educational video intervention improve osteoporosis-related knowledge? A.L. Hauser

000281 Adult Deformity Can lumbar lordosis distribution be designed? A simple intraoperative formula using the P-shift concept B. Otsuki

000284 Complications & Epidemiology SPINESAFE: Integration of Non-Technical Skills and Human Factors to Improve Safety in Spinal Surgery – Preliminary Observational Results from an Ongoing Study G. Barbanti Brodano

000288 Growing Spine Pediatric Posterior Atlantoaxial Transarticular Screws Require a More Lateral Trajectory Due to Age-Related Atlantoaxial Morphology Y. Takeshita

000289 Tumours & Infection Spinal Instability Spondylodiscitis Score (SISS) as a Predictor of Reoperation After Surgical Treatment for Pyogenic Spondylodiscitis T. Kusukawa

000292 Degenerative Thoracolumbar Stand-Alone ALIF with Plate Has Lower Rates of Adjacent Segment Disease than TLIF/PSF: A Matched Cohort Comparison Study A. Mercurio

000299 Degenerative Thoracolumbar Segmental Lordosis Restoration at L5/S1 and Reciprocal Change in Short-Segment Fusion Using Oblique Lateral Interbody Fusion at L5–S1 O. Kosei

000310 Degenerative Thoracolumbar In patients aged ≥85 years, muscle quality but not quantity is linked to baseline pain-related disability after lumbar spine surgery S. Yamada

000319 Cervical & Neural Pathologies Preserving Image Quality with Ultrafast Cervical Spine MRI Using HASTE and Deep Learning–Based Reconstruction M. MIKAMOTO

000320 Degenerative Thoracolumbar Minimally Invasive Anterior Approach to the Thoracolumbar Junction via the Lumbocostal Triangle (LCT): A Technical Note and Perioperative Outcomes S. TERAYAMA

000321 Growing Spine Patient and Parental Anxiety, Information-Seeking Behavior, and the Role of Peer Support in Surgery for Adolescent Idiopathic Scoliosis H. Ueda

000324 Growing Spine Management of Neglected Severe Adolescent Scoliosis (>100°) : Two-Year Outcomes After Posterior Vertebral Column Resection Muhammed Fatih Serttas

000327 Adult Deformity Effectiveness of a Multimodal Preventive Bundle for Reducing Proximal Junctional Failure After Adult Spinal Deformity Surgery M. Keishi

000332 Complications & Epidemiology Spaceflight-Associated Changes in Cervical Spine Structure, Muscle Function, and Disc Health in Astronauts E. Moreira

000334 Adult Deformity Three Points Accurately Describe Sagittal Spinal Shape A. Pupak

000337 Degenerative Thoracolumbar Relationship Between Paraspinal Muscle Size, Intramuscular Fat and Strength: Comparative Insights from Fat-Water MRI and Computer-Vision Analysis in Chronic Low Back Pain and Controls O.C. Iorio

000347 Complications & Epidemiology Antibiotic-Loaded Calcium Sulfate Beads in Paediatric Scoliosis Surgery: A Multicentre UK Safety and Usage Cohort Study M. Newman

000350 Growing Spine Evaluation of MRI “CT-like” Imaging for Pedicle Diameter Measurement in Adolescent Idiopathic Scoliosis S. Katsumi

000352 Cervical & Neural Pathologies Is Graft Always Required? Empty Versus Allograft-Filled Titanium Mesh Cages in Single-Level ACCF I. Gurpinar

000354 Degenerative Thoracolumbar When Imaging Is Not Enough: Diagnostic Selective Nerve Root Blocks and Surgical Decision-Making T.S. Thomsen

000357 Growing Spine AI-Assisted Bone Age Estimation: Multicenter Validation and Comparison across Idiopathic Scoliosis Groups and Healthy Controls B.K. Yilmaz

000358 Tumours & Infection Development of the AO Spinal Metastasis Staging (SMS) Referral Tool: An International Multidisciplinary Expert Panel and Survey Study H. Kuijten

000359 Degenerative Thoracolumbar Lumbar total disc replacement for treatment of lumbar spondylolisthesis R. Yip

000367 Growing Spine Investigating the mechanical effect of the sagittal angle of the cervical facet joint on the cervical intervertebral disc R. Weng

000373 Degenerative Thoracolumbar Voxel-wise MRI analysis reveals clinical and demographic associations in LSS H. Brisby

000377 Growing Spine Accuracy of IS-GROWTH predictions of the risk of reaching the clinically significant thresholds of 30°, 45° and 50° in idiopathic scoliosis patients F. Zaina

000379 Adult Deformity Proximal Sublaminar Bands in Adult Spinal Deformity Surgery: A single centre study with 5-years follow up M. Newman

000380 Degenerative Thoracolumbar Lumbar Pedicle Screws versus Cortical Bone Trajectory: A Systematic Review of Long-Term Outcomes A. Moniakis

000382 Basic Science & Economics Reliability and Validity of a Standardised Protocol for Trunk Extensor Strength with Isometric Dynamometry: A Single-Centre Observational Study F. Galbusera

000383 Adult Deformity Understanding the Impact of Etiology on Mechanical Revision Rates and Patient-Reported Outcomes in Adult Spinal Deformity Surgery S. Ohrt-Nissen

000384 Degenerative Thoracolumbar Machine Learning versus Logistic Regression for Predicting Patient-Reported Outcomes After Lumbar Spinal Stenosis Surgery: Insights from the Swespine Registry E. Brisby Enger

000398 Tumours & Infection Comparative Performance of Albumin-based Biomarker Indices for predicting Postoperative Outcomes in Metastatic Spine Tumor Surgery: A National Database Analysis R. De La Garza Ramos

000400 Basic Science & Economics Zero radiation surgery: A pilot study of MRI- based navigation in spine surgery J. Hallsten

000403 Basic Science & Economics Reliability and accuracy of endplate angle measurement in lateral lumbar radiographs: A validation study using Digitally Reconstructed Radiographs F. Galbusera

000408 Trauma EQ-5D vs SF-6D: Discrepancies in Measuring Health State Utility for Patients with Vertebral Compression S.W. Sørensen

000411 Tumours & Infection The effect of benzoyl peroxide on Cutibacterium acnes colonization in lumbar spine surgery M. TORRUELLA GRIVE

000413 Adult Deformity Does Frailty and other Predictors correlate with Late Mechanical Failure After Lumbar or Thoracolumbar Spinal Fusion for Adult Spinal Deformity: A Multivariable Analysis of 217 Consecutive Patients R. Gmeiner

000418 Degenerative Thoracolumbar Description of a novel risk factor for lumbar degenerative spondylolisthesis: descent and verticalization of the spinous process L. Bellido-Bello

000423 Adult Deformity Concordance Analysis Between GAP Score and T4-L1 Hip Axis Classifications: Implications for Mechanical Failure Risk Stratification L. Vila

000426 Degenerative Thoracolumbar Randomized IDE Clinical Trial Results and Long-Term Outcomes of the Interspinous Process Lumbar Spinal Stabilization System for Predominant Discogenic Low Back Pain M. Gornet

000430 Degenerative Thoracolumbar Intra-articular Platelet-Rich Plasma versus Corticosteroids for Lumbar Facet Syndrome: A Systematic Review and Meta-analysis R. Llombart Blanco

000436 Tumours & Infection Perioperative Complications Following Surgery For Metastatic Spine Disease: A Systematic Review And Meta-Analysis Of Contemporary Literature R. De La Garza Ramos

000447 Degenerative Thoracolumbar Postoperative Slip Reduction is Associated with Improved Two-Year Patient-Reported Outcomes after Fusion Surgery in Low-Grade Degenerative Spondylolisthesis T. Folkerts

000452 Adult Deformity Is the Updated Roussouly Classification Truly Categorical? A Multicenter Analysis of 525 Asymptomatic Adults Identifying an Anteverted Transitional Sagittal Morphotype (Type 3–4AP) T. SANLI

000455 Adult Deformity Sexual Function After Corrective Spinal Osteotomy in Female Ankylosing Spondylitis Patients N.C. Kilic

000459 Adult Deformity Association Between Symptom Duration and CBVA Improvement After Nuchal Ligament Reconstruction and Stabilization Surgery for Dropped Head Syndrome T. Ueshima

000462 Complications & Epidemiology Orthospine Fitness: which markers of musculoskeletal health can explain complications in spine surgery? G. Barbanti Brodano

000463 Degenerative Thoracolumbar Use of Vertebral Bone Marrow Aspirate Clot as an Autologous Cell Therapy and Multifunctional Scaffold for Spinal Fusion – A Prospective Randomized Study G. Tedesco

000469 Tumours & Infection European retrospective multicenter study in patients with vertebral metastases (Train-Metastra) G. Barbanti Brodano

000471 Complications & Epidemiology Level-Specific Standardization of Anterolateral Corpectomy (T11–L5) Achieves Reproducible Operative Profiles and Low Vascular Injury Rate: A 58-Case Consecutive Series D. Aécio

000472 Degenerative Thoracolumbar Observational clinical study evaluating performance and safety endpoints after lumbar dynamic stabilization surgery (2 years of follow-up results) V. Pointillart

000477 Degenerative Thoracolumbar ST Score: Development of an Evidence-Weighted Radiological–Clinical Prototype Model for Segmental Instability in Degenerative Lumbar Disease P.A. Chavira-Ramos

000480 Degenerative Thoracolumbar The Effect of Preoperative High-Intensity Functional Interval Training on Outcomes in Lumbar Spinal Fusion E. van Leent

000481 Degenerative Thoracolumbar Optimization and Validation of a Screening Prediction Model in Lumbar Spinal Fusion E. van Leent

000483 Degenerative Thoracolumbar Good Clinical Outcome Despite Persistent Micromotion After Anterior Lumbar Interbody Fusion Measured by CT‑RSA: A Retrospective Cohort Study N. Fagheeh-Nakhjiri

000495 Complications & Epidemiology Association Between Intraoperative Neuromonitoring Findings and Postoperative Motor Deficits After Lateral Lumbar Interbody Fusion J. Wimmer

000497 Complications & Epidemiology Reoperation Rates and Radiographic Outcomes After 1- and 2-Level Standalone Lateral Lumbar Interbody Fusion for Adult Spinal Deformity J. Wimmer

000499 Adult Deformity Relationship Between Preoperative Cervical Muscle Morphology and Reciprocal Cervical Alignment Changes After Lumbar PSO B. Verna

000500 Adult Deformity Relationship Between Preoperative Cervical Muscle Morphology and Long-Term T1 Slope Progression After Lumbar Pedicle Subtraction Osteotomy B. Verna

000501 Cervical & Neural Pathologies Fusion Assessment, Reoperation Rates, and Imaging Modality Agreement After Four-Level Anterior Cervical Discectomy and Fusion B. Verna

000502 Cervical & Neural Pathologies Platysma Muscle Splitting Incision Enhances Early Cosmetic Outcomes Following Anterior Cervical Discectomy and Fusion: A Prospective Randomized Controlled Trial J. Kim

000503 Cervical & Neural Pathologies The Association of Vascular Health with Cervical Paraspinal Muscle Atrophy and Disc Degeneration B. Verna

000520 Complications & Epidemiology Cell Saver Use Does Not Improve Outcomes and May Increase Complications in Adult Spinal Deformity Surgery: A Propensity-Matched Analysis L. Vila

000521 Adult Deformity Lumbar Apex Pelvic Angle (LaPA) as the Rosetta Stone of Spinal Shape: A PI-Based Predictive Cascade for Global Sagittal Reconstruction L. Vila

000523 Complications & Epidemiology Incidence and Risk Factors for Pulmonary Embolism Following Spinal Fusion Surgery Exceeding Six Hours: Dynamic Risk Stratification Using a Two-Stage Predictive Model S.A. Heinig

000527 Degenerative Thoracolumbar Results of instrumented fusion surgeries on lumbar spine with regard to "sagittal balance" parameters after posterior, anterior and combined approaches M. Cmorej

000536 Degenerative Thoracolumbar Perioperative Analgesic Consumption Across Different Surgical Modalities of Lumbar Discectomy: A Comparative Analysis of Open, Tubular, and Endoscopic Approaches R. Kostyšyn

000538 Complications & Epidemiology Complication analysis following full-endoscopic uniportal endoscopic surgery C. Siepe

000539 Trauma Subaxial Cervical Fractures in Ankylosing Spondylitis: A Systematic Review of Management Strategies and Clinical Outcomes M. Abdallah

000545 Degenerative Thoracolumbar Prospective Comparison of Full-Endoscopic, Tubular, and Open Lumbar Discectomy: One-Year Clinical and Functional Outcomes R. Kostyšyn

000551 Degenerative Thoracolumbar Paraspinal Muscle Fatty Infiltration Is Associated With Nonunion and Cage Subsidence After Anterolateral Lumbar Interbody Fusion: A Level-Specific Analysis C.S. Liu

000555 Adult Deformity Relordosing transforaminal lumbar interbody fusion (TLIF) with deliberate release of the anterior longitudinal ligament using expandable interbody spacers – institutional comparative cohort study M.N. Stienen

000556 Degenerative Thoracolumbar Reperfusion blood oxygen level dependent (BOLD) magnetic resonance imaging (MRI) as a non invasive tool to distinguish neurogenic and vascular claudication K. Rennerfelt

000562 Degenerative Thoracolumbar Bipotal endoscopic tranforaminal lumbar interbody fusion (BE-TLIF) : Evaluation clinical and CT- based radiological outcome S. sirivitmaitree

000571 Degenerative Thoracolumbar Adjacent level decompression in spinal stenosis provides similar outcomes to index surgery O. Zielinski

000595 Degenerative Thoracolumbar Intertransverse Fusion in TLIF: A Paired Intra-Patient Comparison of Allograft Versus Autograft with Long-Term Follow-up M. Alfonso Olmos

000596 Adult Deformity The Use of Biplanar Custom 3D printed ALIF Cages in Lumbar Deformity Surgery M. Dhodapkar

000597 Adult Deformity Does vertebroplasty at the upper instrumented and adjacent vertebrae prevent proximal junctional kyphosis and failure in adult spinal deformity surgery? D. Delicati

000599 Cervical & Neural Pathologies Dynamic MRI in Cervical Myelopathy: Factors Associated with New Compression Findings Nicolas Molho

000600 Complications & Epidemiology Predictive Value of the 5-Item Modified Frailty Index in High-Complexity Thoracolumbar Spine Surgery N. Molho

000602 Growing Spine Long-term outcomes 5-15 years after posterior spinal fusion with segmental pedicle screw instrumentation for adolescent idiopathic scoliosis: A retrospective cohort study I.B. Kindberg

000603 Tumours & Infection Local Antibiotic Delivery Using Absorbable Calcium Sulphate Beads in Paediatric Spinal Surgery: Early Outcomes from a Tertiary Spinal Centre S. Tong

000609 Complications & Epidemiology Prevalent Vertebral Fracture Predicts Mechanical Complications After Spinal Instrumentation in Elderly Patients H. Oishi

000610 Basic Science & Economics Interdependence of Body Mass Index and Skeletal Muscle Index in Predicting Gravitational Spinal Instability in Adolescent Idiopathic Scoliosis S. Hwang

000612 Adult Deformity Assessment of Contemporary Radiographic Markers to Predict Pre-Operative Disability in Adult Spinal Deformity Patient J. Burke

000618 Complications & Epidemiology Perioperative Aspirin Continuation Is Not Associated With Increased Surgical Morbidity Following Minimally Invasive Anterior-to-Psoas Lumbar Fusion: A Propensity-Matched Analysis Jeongeun Kim

000621 Cervical & Neural Pathologies Trajectory Matters: Medial Angulation Improves Feasibility and Safety of C1 Pedicle Screw Placement Jeongeun Kim

000636 Adult Deformity The Mechanical Lever Arm and Distal Junctional Kyphosis: A Preliminary Biomechanical Analysis of Construct Length and Vertebral Bone Density K. Sato

000637 Growing Spine Real-world effectiveness of conservative treatment of adolescents with idiopathic scoliosis F. Zaina

000639 Adult Deformity Patient-Specific, Radiation-Free Spinal Motion Modeling Challenges Standard Intervertebral Motion Assumptions S. Schelfaut

000642 Degenerative Thoracolumbar High Prevalence of Radiographic Lumbar Disc Ossification After Posterolateral Fusion Without Disc Manipulation: Reliability of a Modified McAfee-Based Classification M. Alfonso Olmos

000645 Tumours & Infection Morphological Features Associated with Biomechanical Deterioration and Need for Stabilization in Spinal Metastases – Results from a Modified Delphi Study from the AO Spine Knowledge Forum (KF) Tumor A. Lazary

000646 Degenerative Thoracolumbar End-to-End Deep Learning–Based Grading of Lumbar Facet Joint Degeneration and Analysis of Segmentation-Induced Performance Degradation B. Chen

000651 Adult Deformity Are Pain Intensity Measures Interchangeable? Agreement among ODI, SRS-22, and COMI in Chronic Low Back Pain with and without Scoliosis F. Zaina

000654 Degenerative Thoracolumbar Iatrogenic Spondylolysis After Lumbar Decompression in Achondroplasia: Incidence, Characteristics, and Clinical Course F. Saiki

000657 Tumours & Infection Dental intervention is associated with 6-week CRP normalization in infectious spondylitis S. Tanishima

000660 Tumours & Infection Treatment Outcomes and Prognostic Factors in Intramedullary Spinal Cord Metastasis: Individual Patient Data Pooled Analysis F.C. Stengel

000666 Degenerative Thoracolumbar Application of Vision Transformer for Automated Assessment of Lumbar Facet Joint Osteoarthritis Severity on CT Images B. Chen

000667 Complications & Epidemiology Long-Term Impact of Adolescent Idiopathic Scoliosis Surgery Using Harrington Instrumentation on Quality of Life J. Mohar

000668 Complications & Epidemiology Cement Injection Volume and Intravenous Cement Leakage in Cement-Augmented Pedicle Screw Fixation: A Multicenter Screw-Level Analysis Using Generalized Estimating Equations Y. Tetsuto

000676 Degenerative Thoracolumbar Good Patient-Reported Outcomes after Full-Endoscopic Lumbar Discectomy: A Retrospective Follow-Up Study A. Baranto

000679 Degenerative Thoracolumbar Location of stenosis matters: Unilateral Foraminal Lumbar Spinal Stenosis Is Associated with Asymmetric Paraspinal Muscle Degeneration G. Müller

000680 Basic Science & Economics Synthetic CT from Diagnostic Spine MRI: a Multi-Center Approach for Radiation-Free Bone Visualization T.P. Schlösser

000684 Cervical & Neural Pathologies Longitudinal Outcomes and Predictive Value of Early Pain Relief After Cervical Selective Nerve Root Block: A Three- Group Trajectory Model N. Kumar

000693 Growing Spine Identifying patterns of coronal malalignment according to the Obeid coronal malalignment classification (O-CM) for Adolescent and Adult Idiopathic Scoliosis A. Bourghli

000703 Adult Deformity Radiographic Clustering Enhances Subgroup Prediction of Mechanical Complications in Adult Spinal Deformity A. Bourghli

000704 Adult Deformity Predicting SRS-22 MCID Attainment After Adult Spinal Deformity Surgery: Do Clinical or Radiographic Clusters Perform Better? A. Bourghli

000713 Degenerative Thoracolumbar Beyond the Success of Neural Decompression: Preoperative Psychosocial Status as an Independent Predictor of Low Back Pain Relief in Lumbar Spinal Stenosis K. Watanabe

000716 Tumours & Infection Does intralesional excision plus adjuvant charged- particles radiation therapy matter on local disease control and survival in the management of primary spinal tumors not eligible for en bloc resection? Retrospective analysis of a cohort of 36 patients fr G. Barbanti Brodano

000722 Degenerative Thoracolumbar Clinical outcomes after decompression followed by fusion versus primary fusion for lumbar degenerative spondylolisthesis: an analysis of propensity score-matched registry data D. Haschtmann

000729 Growing Spine Hidden blood loss in patients undergoing segmental pedicle screw instrumentation for syndromic scoliosis and predictors for bleeding: a case-control study H. Sallinen

000733 Complications & Epidemiology Incidence and Risk Factors for Postoperative Radiculitis after ALIF: An Analysis of Spinopelvic Parameters and the GAP Score F. Caiazzo

000735 Tumours & Infection A validation study of the ProgMets score as a survival prediction tool in spinal metastasis F. Mccabe

000737 Tumours & Infection Tumor-Specific Survival Changes After Surgery for Metastatic Spinal Cord Compression: A 15-Year Comparative Cohort Study S. Morgen

000738 Adult Deformity Do age and pelvic incidence adjusted postoperative alignment models improve proximal junctional kyphosis and failure prediction after adult spinal deformity surgery? M. DUMARTY

000740 Trauma Predictors of mortality in isolated type II odontoid fractures: treatment choice versus age and comorbidity J. Gewiess

000743 Trauma Comparison of Simulation Navigation and Conventional AO-Method for Sacroiliac Screw Placement in Dorsal Pelvic Ring Fractures S.S. Panev

000747 Cervical & Neural Pathologies Cervical Paraspinal Muscle Fatty Infiltration as a Marker of Frailty and Predictor of Perioperative Outcomes in Posterior Cervical Decompression and Fusion A. Gillespie

000750 Cervical & Neural Pathologies Paraspinal Fat Infiltration in Patients Undergoing Anterior Cervical Discectomy and Fusion: The Relationship with Frailty and Postoperative Outcomes A. Gillespie

000754 Degenerative Thoracolumbar Radiographic coronal alignment correction and risk of reoperation in adult spinal deformity: stand-alone lateral lumbar interbody fusion versus circumferential fusion P.A. Rocha Torres

000756 Tumours & Infection Optimizing Surgical Outcomes in Intramedullary Spinal Cord Tumors: A Histology-Driven Paradigm Based on 578 Consecutive Cases J. Wenqing

000758 Degenerative Thoracolumbar Radiographic sagittal alignment correction and risk of reoperation in adult spinal deformity: stand-alone lateral lumbar interbody fusion versus circumferential fusion P.A. Rocha Torres

000762 Trauma Redefining Treatment Sequencing in the Osteoporotic Spine: The Convergence of ‘Fix and Treat’ and ‘Treat and Fix’ Strategies N. Kumar

000770 Complications & Epidemiology Lumbar Sympathetic Chain Integrity During the Minimally Invasive Oblique Antepsoas Lumbosacral Fusion: Intraoperative Analysis And A Prospective Clinical Outcomes Study Jeongeun Kim

000774 Adult Deformity Gait Velocity Uniquely Predicts Pre-Operative Disability in Adult Spinal Deformity Patients J. Burke

000783 Trauma Metabolic Alterations and Sagittal Alignment in Spontaneous Osteoporotic Vertebral Compression Fractures: The Role of Vitamin D and Parathyroid Hormone B. Baljak

000787 Complications & Epidemiology Systematic review of care bundles to reduce postoperative spinal implant infections P. Dymén

000788 Tumours & Infection Neurological Status after Surgical Intervention of Intraspinal Tumors – How do we Manage Patient Expectations? T.C.G. Fornitz

000792 Basic Science & Economics Acute Effects of Isometric Trunk Fatigue on Cervical, Scapular, and Lumbar Muscle Mechanical Properties: A Myotonometric Pilot Study Stratified by Nomophobia Level Yasemin SAHBAZ

000793 Adult Deformity More is better! Multicenter analysis of failure rates and risk factors between bilateral single and multiple pelvic fixation in adult spinal deformity surgery P. Jankowski

000796 Growing Spine Impact of a Comprehensive Education Approach and Technological Improvement on Brace Quality and Treatment Outcomes in Adolescent Idiopathic Scoliosis: A Controlled Longitudinal Study S. Pjanic

000810 Cervical & Neural Pathologies Incidence, Severity, and Clinical Relevance of Bony Osteolysis Following Anterior Cervical Discectomy and Fusion Using Stand alone Titanium Cages S.G. Kamat

000819 Degenerative Thoracolumbar Expandable Cages as Independent Risk Factor for Early Cage Subsidence in Transforaminal Lumbar Interbody Fusion: A Retrospective Analysis of 530 Patients F.C. Stengel

000825 Degenerative Thoracolumbar The Potential of 3D MRI for Improved Detection and Evaluation of the Conjoined Lumbosacral Nerve Root M. Polt

000828 Cervical & Neural Pathologies Comparison of Osteolysis and Revision Rates Following Anterior Cervical Discectomy and Fusion: Stand-Alone Cage Versus Cage-Screw Construct S.G. Kamat

000830 Basic Science & Economics Novel locking screws increase the anti-rotation torque of pedicle screws significantly – An in vitro study A.K. Greiner-Perth

000831 Basic Science & Economics In vivo-like long-term compressive loading affects intervertebral disc swelling and flexibility – An ex vivo study A.K. Greiner-Perth

000836 Degenerative Thoracolumbar Central Cage Placement Is Not Optimal: Association Between Cage Position, Neurological Recovery, and Subsidence in UBE-ELIF T. Mizuno

000838 Tumours & Infection Cervical Versus Lumbar Pyogenic Spondylitis: Differences in Clinical Characteristics and Microbiological Spectrum S. Tanishima

000839 Complications & Epidemiology Intraoperative and Postoperative Complications After Stand-Alone L5-S1 ALIF: Retrospective Review of 176 Single-Center Cases M. Polt

000845 Growing Spine Evaluating CT-Like MRI as a Radiation-Free Alternative for Preoperative Planning in Spinal Deformity Surgery S. Schelfaut

000846 Tumours & Infection Full-Endoscopic Access–Assisted Continuous Local Antibiotics Perfusion (FESS-assisted CLAP) for Native Pyogenic Spondylodiscitis: Technique and Early Experience T. Mukaihata

000851 Degenerative Thoracolumbar Effects of Out-of-Hours Surgery in Cauda Equina Syndrome A. Janssen-Heidenfeld

000878 Basic Science & Economics Are hyperhydration and endplate-anulus integrity potential key drivers of cervical disc herniation? – An ex vivo study A.K. Greiner-Perth

000887 Tumours & Infection Does Glycemic Control Explain the Risk of Infection in Diabetic Patients Undergoing Instrumented Lumbar Arthrodesis? J. Nuñez

000894 Adult Deformity Pre-postoperative reciprocal changes for ASD patients with long thoracolumbar fusion M. Phu

000899 Basic Science & Economics AI based automatic processing of full spine radiographs for clinical parameters quantification A. Daridon

000902 Adult Deformity Long fusion with pelvic fixation in ASD lead to frontal instability during gait A. Assi

000906 Complications & Epidemiology Impact of Serotonergic Modulators on Short- and Long-Term Outcomes After Transforaminal Lumbar Interbody Fusion A. Gillespie

000911 Basic Science & Economics Cost-utility analysis of transforaminal versus posterior lumbar interbody fusion for symptomatic single-level spondylolisthesis (LIFT): a multicentre controlled, patient blinded, randomized trial M. de Vries

000912 Cervical & Neural Pathologies The Cord-to-Canal Ratio as a Radiographic Tool in Congenital Cervical Spinal Stenosis A. Gillespie

000921 Basic Science & Economics Determinants of Lumbar Vertebral Compression Strength Assessed by Finite Element Analysis A.M. Mielke

000923 Adult Deformity Weakness of trunk and knee extensors might hinder the ability to maintain compensatory mechanisms while walking A. Assi

000928 Basic Science & Economics The Right Patient, the Right Indication: Optimizing Outcomes of Minimally Invasive Sacroiliac Joint Fusion C. Jacquemin

000929 Growing Spine Impact of posterior spinal fusion on daily life activities in Lenke-1 AIS patients: a 3D functional evaluation A. Assi

000931 Degenerative Thoracolumbar ESCAPE: Evaluation of Spinal Conservation by Endoscopic Procedures to Avoid Fusion B. Benjamin

000935 Degenerative Thoracolumbar The Quadratus Lumborum in Chronic Low Back Pain: Insights from Imaging, Function, and Clinical Measurements T.V. Mihalache

000937 Degenerative Thoracolumbar Robot-assisted spinal surgery – lessons from the learning curve of 100 cases at a teaching hospital M. Ahmad

000942 Growing Spine Functional changes with age in idiopathic scoliotic patients: evaluation of kinematic limitations and their compensatory mechanisms A. Assi

000945 Complications & Epidemiology Complications and Reoperations After Four-Level Anterior Cervical Discectomy and Fusion B. Verna

000956 Degenerative Thoracolumbar Is the VBQ Score Ready for Routine Use? A Comparative Analysis of Diagnostic Accuracy Between Spine Surgeons and Residents A. Mahatthanatrakul

000957 Degenerative Thoracolumbar Incidence of proximal junctional kyphosis after lumbar arthrodesis using cortical trajectory screws: comparison between freehand technique and intraoperative navigation C. Fabrés Martín

000960 Complications & Epidemiology Twice as many surgical site infections between June and October than during the rest of the year: results of a retrospective analysis of single-centre data H. Nemcova

000964 Degenerative Thoracolumbar What Pfirrmann misses: a routine T2-weighted signal index reveals substantial within-grade heterogeneity in early lumbar disc degeneration T.V. Mihalache

000967 Degenerative Thoracolumbar Restoring Proportionate Alignment With Reciprocal Change Predicts Lower Adjacent Segment Disease M. Manzetti

000969 Basic Science & Economics Barycentrometric analysis of sagittal flexion moments in ASD: role of ODHA in identifying abnormal mechanical loading A. Assi

000972 Growing Spine Can Integrated Planning with the Gap Score and Sagittal Simulation Using Surgimap Improve Sagittal Alignmnent and Reduce Complications in Adolescent Idiopathic Scoliosis Surgery? A Retrospective Case-Matched Study of 100 Patients G. Viroli

000973 Tumours & Infection Neurosurgical Aspects, Functional Outcome and Rehabilitation After Intramedullary Spinal Tumor Surgery E. Muncan

000974 Complications & Epidemiology Anterior-to-Psoas (ATP) Lumbar Interbody Fusion at L4-L5: Radiographic Outcomes and Influence of Psoas Morphology S. Shaikh

000978 Complications & Epidemiology Preoperative Paraspinal Muscle Degeneration as a Predictor of Adjacent Segment Disease Following Spinal Fusion S. Shaikh

000979 Degenerative Thoracolumbar Comparative Clinical and Radiographic Outcomes of Mini-ALIF with Percutaneous Fixation Versus MI-TLIF in Intermediate-to-High-Grade Isthmic Spondylolisthesis S. Shaikh

000981 Complications & Epidemiology Impact of resident versus specialist performed lumbar spine surgery T. Overmark

000984 Degenerative Thoracolumbar Minimally Invasive Versus Open Transforaminal Lumbar Interbody Fusion for Single-Level Degenerative Disease: A Five-Year Matched Cohort Analysis S. Shaikh

000985 Complications & Epidemiology Early Distal Adding-On Following Adolescent Idiopathic Scoliosis Correction Using Stable Vertebra Minus One (SV-1): A 1-Year Radiographic Study S.G. Kamat

000986 Adult Deformity Quantifying trunk and hip mobility in ASD with sagittal malalignment: an original analysis towards unlocking the spine-hip relationship A. Assi

000989 Basic Science & Economics Oversizing pedicle screw diameter relative to pedicle width improves fixation strength: A cadaveric pull-out and toggling study M. Bernet

000993 Basic Science & Economics Monitoring the Mechanical State of Lumbar Fusion Constructs with Rod-Mounted Strain Sensors and Sensor-integrated Interbody Cages M. Khodaee

000999 Degenerative Thoracolumbar MIS-TLIF vs Traditional TLIF: Differences in Clinical and Radiological Outcomes C. Velluto

001000 Degenerative Thoracolumbar Pain management and quality of life after surgical treatment of lumbar pain: a prospective cross-sectional study of a single center M.E. Sakellaridou

001002 Degenerative Thoracolumbar Axial loaded MRI in surgically treated LSS patients, a report from the NORDSTEN study H. Banitalebi

001003 Degenerative Thoracolumbar Five-Year Outcomes of Minimally Invasive Interspinous Fixation versus Open Direct Decompression for Lumbar Spinal Stenosis: A Multi-Center Randomized Controlled Trial in the United Kingdom J. Timothy

001012 Degenerative Thoracolumbar Ambulatory endoscopic lumbar decompression in geriatric patients: a prospective feasibility and outcomes study S. RODRIGUES

001013 Tumours & Infection No difference in perioperative results between posterior instrumentation with and without interbody cage and debridement in primary lumbosacral spondylodiscitis in adults – a single center experience L. Dieringer

001020 Tumours & Infection Cefazolin Versus Broad-Spectrum Perioperative Antibiotic Prophylaxis in Instrumented Cervical Spine Surgery: A Retrospective Cohort Analysis V. Santaram

001021 Degenerative Thoracolumbar Age-referenced facet joint degeneration is associated with chronic low back pain whereas absolute grades are not: a population-based normative modeling study T.V. Mihalache

001027 Degenerative Thoracolumbar The Impact Of Frailty, Anxiety, And Depression On Clinical Outcome Of Surgery For Degenerative Lumbar Spine In The Elderly – A Systematic Review C. Vleggeert-Lankamp

001028 Cervical & Neural Pathologies Point-Of-Care Automated Imaging Tool for Early Degenerative Cervical Myelopathy Z. Smith

001032 Degenerative Thoracolumbar Three-Dimensional vs Two-Dimensional Visualization in Unilateral Biportal Endoscopic (UBE) Spine Surgery: A Randomized Crossover Simulation Feasibility Study S. Motov

001041 Complications & Epidemiology Risks and Outcomes of Degenerative Lumbar Surgery in Patients with Parkinson’s Disease M. Teli

001046 Growing Spine Intraoperative CT-Assisted Navigation Reduces Radiation Exposure in Adolescent Spinal Deformity: A Comparative Study of 182 Consecutive Patients M. Teli

001051 Cervical & Neural Pathologies Comparison Between Right- and Left-Sided Anterolateral Approaches in Anterior Cervical Fusion: A Four-Year prospective comparative analysis M. Teli

001065 Degenerative Thoracolumbar Intraoperative Ropivacaine Versus Placebo for Early Analgesic Control After Full-Endoscopic Lumbar Discectomy: A Prospective Double-Blind Study H. Hdhili

001071 Degenerative Thoracolumbar Early Return to Duty Following Full-Endoscopic L4–L5 and L5-S1 Discectomy in an Active Military Population H. Hdhili

001073 Degenerative Thoracolumbar Segmental Variability of Lumbar Paraspinal Fatty Infiltration and Clinical Outcomes in Degenerative Spine Surgery A. Gillespie