Objective The demand for spinal fusion is increasing, with concurrent reports of iatrogenic adult spinal deformity (flatback deformity) possibly due to inappropriate lordosis distribution. This distribution is assessed using the lordosis distribution index (LDI) which describes the upper and lower arc lordosis ratio. Maldistributed LDI has been associated to adjacent segment disease following interbody fusion, although correlation to later-stage deformity is yet to be assessed. We therefore aimed to investigate if hypolordotic lordosis maldistribution was associated to radiographic deformity-surrogates or revision surgery following instrumented lumbar fusion.
Methods All patients undergoing fusion surgery ( ≤ 4 vertebra) for degenerative lumbar diseases were retrospectively included at a single center. Patients were categorized according to their postoperative LDI as: “normal” (LDI 50–80), “hypolordotic” (LDI < 50), or “hyperlordotic” (LDI > 80).
Results We included 149 patients who were followed for 21 ± 14 months. Most attained a normally distributed lordosis (62%). The hypolordotic group had increased postoperative pelvic tilt (PT) (p < 0.001), pelvic incidence minus lumbar lordosis (PI–LL) mismatch (p < 0.001) and decreased global lordosis (p = 0.007) compared to the normal group. Survival analyses revealed a significant difference in revision surgery (p = 0.03), and subsequent multivariable logistic regression showed increased odds of 1-year revision in the hypolordotic group (p = 0.04). There was also a negative, linear correlation between preoperative pelvic incidence (PI) and postoperative LDI (p < 0.001).
Conclusion In patients undergoing instrumented lumbar fusion surgery, hypolordotic lordosis maldistribution (LDI < 50) was associated to increased risk of revision surgery, increased postoperative PT and PI–LL mismatch. Lordosis distribution should be considered prior to spinal fusion, especially in high PI patients.
Citations
Citations to this article as recorded by
The Use of a Wilson Kyphosis Frame Results in Minimal Loss of Lordosis Correction after Single Level Minimally Invasive TLIF at L4-5 or L5-S1 Mitchell S. Fourman, Keith Lyons, Kasra Araghi, J. Manuel Sarmiento, Sidhant Dalal, Dan Shinn, Junho Song, Pratyush Shahi, Dimitra Melissaridou, Evan Sheha, Sravisht Iyer, James Dowdell, Sheeraz Qureshi Global Spine Journal.2026; 16(3): 1509. CrossRef
Can proximal junctional failure be predicted after adult spinal deformity surgery by experienced deformity surgeons based on patient, surgical and radiographic parameters? Marc Khalifé, Ayman Mohamed, David Ben-Israel, Joshua T. Bunch, Alan H. Daniels, Bassel G. Diebo, Robert Eastlack, Richard G. Fessler, Munish C. Gupta, Kojo Hamilton, Richard Hostin, Han Jo Kim, Eric O. Klineberg, Lawrence G. Lenke, Jeffrey Mullin, Pravee European Spine Journal.2026; 35(5): 2295. CrossRef
Standalone Anterior Lumbar Interbody Fusion L5-S1 for Single-Level Degenerative Disc Disease: Implant Parameters Influencing Radiological Results Pierre Barthes, André Boché, Richard Lacroix, Cécile Swennen, Mathieu Severyns, Clément Giraud, Tanguy Vendeuvre Cureus.2026;[Epub] CrossRef
Distal lordotic angle independent of pelvic incidence to reduce the risk of adjacent segment degeneration following L4–S1 posterior lumbar interbody fusion: A retrospective study Young-Gook Gwak, Myung-Hoon Shin Medicine.2026; 105(4): e47329. CrossRef
Association between lumbar lordosis and proximal junctional failure following adult spinal deformity surgery: a systematic review and meta-analysis Abdullah M. Alharran, AbdulMuhsen AlQallaf, Mohammad Mohammad, Mohammad Salem Alajmi, Mohammad Alkaak, Salem Y. Alenezi, Fahad Mohammad, Ahmad Al Ahmad, Nizar Algarni, Yousef Marwan Spine Deformity.2026;[Epub] CrossRef
How Does the Lordosis Apex, Lordosis Arcs, and Inflection Point According to Roussouly Predict Outcomes After Adult Spinal Deformity Surgery? Harsh Jain, Advith Sarikonda, Hani Chanbour, Iyan Younus, Tyler Zeoli, Adam M. Wegner, Amir M. Abtahi, Byron F. Stephens, Scott L. Zuckerman Spine.2026; 51(8): 542. CrossRef
The impact of preoperative lordosis distribution index on postoperative sagittal alignment and outcomes after lumbar fusion surgery for degenerative spine disease Jonathan Dalton, Robert Oris, Joydeep Baidya, Mitchell Ng, Joshua Mathew, Yunsoo Lee, Olivia Opara, William Green, Yulia Lee, Yasmine Eichbaum, Morgan Hitchner, Gregorio Baek, Matthew Meade, Adam Kohring, Abbey Glover, Emily Ducaji, Julian Takagi-Stewart, European Spine Journal.2026;[Epub] CrossRef
Radiographic assessment of immediate postoperative lumbar lordosis redistribution after pedicle subtraction osteotomy with pre-contoured rods: A retrospective study Thomas Chevillotte, Théo Cojean, Pierre Grobost, Alice Darnis, Timothée Dautel, Clément Silvestre Orthopaedics & Traumatology: Surgery & Research.2026; : 104729. CrossRef
L3-L4 Hyperlordosis and Decreased Lower Lumbar Lordosis Following Short-Segment L4-L5 Lumbar Fusion Surgery is Associated With L3-L4 Revision Surgery for Adjacent Segment Stenosis Brandon J. Herrington, Renan R. Fernandes, Jennifer C. Urquhart, Parham Rasoulinejad, Fawaz Siddiqi, Christopher S. Bailey Global Spine Journal.2025; 15(2): 382. CrossRef
Distal Lumbar Lordosis is Associated With Reoperation for Adjacent Segment Disease After Lumbar Fusion for Degenerative Conditions Ragavan Manoharan, Ahmed Cherry, Aditya Raj, Nisaharan Srikandarajah, Mark Xu, Carlo Iorio, Christopher J. Nielsen, Yoga Raja Rampersaud, Stephen J. Lewis Global Spine Journal.2025; 15(1): 143. CrossRef
One-Level Versus Two-Level Anterior Lumbar Interbody Fusion (ALIF) From L4 to S1 Manjot Singh, Ashley Knebel, Michael J. Kuharski, Joseph E. Nassar, Tucker Callanan, Bryce A. Basques, Eren O. Kuris, Bassel G. Diebo, Alan H. Daniels Spine.2025; 50(4): 271. CrossRef
Impact of spinal alignment on adjacent segment disease and degeneration after short-segment lumbosacral fusion Giuseppe Loggia, Mazda Farshad, Moritz Jokeit, Jonas Widmer, Stefani Dossi, Marco D. Burkhard The Spine Journal.2025; 25(11): 2461. CrossRef
Assessment of lumbosacral spinal curvatures before and after surgery using 3D posturography Karol Łosiński, Aleksandra Bryndal, Agnieszka Grochulska, Wojciech Nawos-Wysocki, Sebastian Glowinski Scientific Reports.2025;[Epub] CrossRef
Sagittal plane optimization with prone transpsoas lateral interbody fusion (PTP LIF) Zachary NaPier Seminars in Spine Surgery.2025; : 101181. CrossRef
Impact of Segmental Lordosis Restoration During Degenerative Spinal Fusion on Two-year Adjacent Segment Disease and Revision Rates Manjot Singh, Michael J. Kuharski, Hazem Abdel-Megid, Mariah Balmaceno-Criss, Ashley Knebel, Mohammad Daher, Joseph E. Nassar, Bryce Basques, Eren O. Kuris, Bassel G. Diebo, Alan H. Daniels Spine.2025; 50(17): 1219. CrossRef
Principles of Level Selection for Instrumentation in Adult Thoracolumbar Spinal Deformity Surgery Zeeshan M. Sardar, Josephine R. Coury, Katherine Dong, Anson G. Bautista, Lawrence G. Lenke, Justin L. Reyes Journal of Bone and Joint Surgery.2025; 107(20): 2322. CrossRef
Utility of the L1 pelvic angle (L1PA) for assessment of sagittal alignment of the lumbar spine following short segment fusion: Comparison to segmental measures Zvipo M. Chisango, Catherine B. Hurley, Gabriel A. Gonzalez, Michael J. Farias, Nicolas L. Carayannopoulos, Joseph P. Carroll, Manjot Singh, Jinseong Kim, Bryce A. Basques, Bassel G. Diebo, Alan H. Daniels North American Spine Society Journal (NASSJ).2025; 24: 100798. CrossRef
Personalized Spine Surgery in Adult Deformity: Reoperation Rates and Mechanical Complications Following Customized Planning and Interbody Implant Use Justin S. Smith, Chun-Po Yen, Roland Kent, Sigurd Berven, Gregory M. Mundis, Robert Robinson, Rodrigo J. Nicolau, Joseph A. Osorio, Jahangir Asghar, J. Rush Fisher, Kelli M. Howell, Mark Tantorski, Donald Blaskiewicz, Jeffrey P. Mullin, Joseph Gjolaj, Joh Global Spine Journal.2025;[Epub] CrossRef
Pelvic position significantly influences the segmental lumbar lordosis: a cross-sectional study in asymptomatic population SiYu Zhou, YuDong Zhao, Yi Zhao, ZhiQian Luo, HongBin He, JunJie Ma, WeiPeng Qiu, GengYu Han, ZhuoRan Sun, Weishi Li European Spine Journal.2025;[Epub] CrossRef
The Significance of Odontoid Incidence in Patients With Cervical Spondylotic Myelopathy Hongyu Qin, Weiyou Chen, Longao Huang, Xin Xiao, Qinghua Yang, Hua Jiang Global Spine Journal.2024; 14(8): 2374. CrossRef
Single position L5-S1 lateral ALIF with simultaneous robotic posterior fixation is safe and improves regional alignment and lordosis distribution index Nicholas S. Hernandez, L. Daniel Diaz-Aguilar, Martin H. Pham European Spine Journal.2024; 33(9): 3583. CrossRef
Long-term comparison of anterior (ALIF) versus transforaminal (TLIF) lumbar interbody fusion: a propensity score-matched register-based study Ole Kristian Alhaug, Filip C. Dolatowski, Anette Moltu Thyrhaug, Sverre Mjønes, Joao André Barroso Pereira Roque Dos Reis, Ivar Austevoll European Spine Journal.2024; 33(3): 1109. CrossRef
Postoperative lordosis distribution index, patient reported outcome measures, and revision surgery following transforaminal lumbar interbody fusion Anders Schack, Tanvir Johanning Bari, Martin Gehrchen, Benny Dahl, Rachid Bech-Azeddine World Neurosurgery: X.2024; 21: 100251. CrossRef
Validation of Roussouly classification in predicting the occurrence of adjacent segment disease after short-level lumbar fusion surgery Muyi Wang, Xin Wang, Hao Wang, Yifei Shen, Yong Qiu, Xu Sun, Dong Zhou, Yuqing Jiang Journal of Orthopaedics and Traumatology.2024;[Epub] CrossRef
Sagittal Alignment in the Degenerative Lumbar Spine Bassel G. Diebo, Mariah Balmaceno-Criss, Renaud Lafage, Christopher L. McDonald, Daniel Alsoof, Sereen Halayqeh, Kevin J. DiSilvestro, Eren O. Kuris, Virginie Lafage, Alan H. Daniels Journal of Bone and Joint Surgery.2024; 106(5): 445. CrossRef
Limited Intervention in Adult Scoliosis—A Systematic Review Zuhair Jameel Mohammed, John Worley, Luke Hiatt, Sakthivel Rajan Rajaram Manoharan, Steven Theiss Journal of Clinical Medicine.2024; 13(4): 1030. CrossRef
Lumbar lordosis and sacral slope do not differ in two types of postoperative lumbar disc re-herniation: a cross-sectional observational study Zhijia Shen, Wenhao Wang, Li Ni, Hongcheng Zhao, Lianda Yang, Huilin Yang, Linlin Zhang BMC Musculoskeletal Disorders.2024;[Epub] CrossRef
Modified S1 Pedicle Subtraction Osteotomy Precious C. Oyem, Jacob K. Greenberg, Colin R. Rhoads, Alexander Spiessberger Clinical Spine Surgery.2024; 37(6): 252. CrossRef
Reciprocal Changes in Sagittal Spinal Alignment After L5-S1 Anterior Lumbar Interbody Fusion James J. Zhou, S. Harrison Farber, Nima Alan, Kathleen S. Moore, Charuta G. Furey, Luke K. O'Neill, Juan P. Giraldo, Zaman Mirzadeh, Jay D. Turner, Juan S. Uribe World Neurosurgery.2024; 188: e64. CrossRef
Predictive Value of Bolster Supine X-Ray for the Correction of Segmental Deformity After Thoracolumbar Fusion Surgery Sang Hyub Lee, Dong-Hwan Kim, Jin Hoon Park, Dong Ho Kang Neurosurgery.2024; 95(5): 1046. CrossRef
Restoring L4-S1 Lordosis Shape in Severe Sagittal Deformity: Impact of Correction Techniques on Alignment and Complication Profile Manjot Singh, Mariah Balmaceno-Criss, Mohammad Daher, Renaud Lafage, D. Kojo Hamilton, Justin S. Smith, Robert K. Eastlack, Richard G. Fessler, Jeffrey L. Gum, Munish C. Gupta, Richard Hostin, Khaled M. Kebaish, Eric O. Klineberg, Stephen J. Lewis, Breton World Neurosurgery.2024; 189: e219. CrossRef
Evaluating the biomechanical effects of pedicle subtraction osteotomy at different lumbar levels: a finite element investigation Niloufar Shekouhi, Sudharshan Tripathi, Alekos Theologis, Muzammil Mumtaz, Hassan Serhan, Robert McGuire, Vijay K. Goel, Joseph M. Zavatsky The Spine Journal.2024; 24(11): 2191. CrossRef
Lumbar Apex Position as an Independent Risk Factor for Adjacent Segment Diseases in Patients Undergoing Short-Level Transforaminal Lumbar Interbody Fusion Muyi Wang, Xin Wang, Jingbin Wu, Yifei Shen, Yong Qiu, Xu Sun, Dong Zhou, Yuqing Jiang Spine.2024; 49(20): 1435. CrossRef
L4 Pedicle Subtraction Osteotomy in a Patient With Multiple Previous Revisions: A Case Report Alejandro J Quinonez, Austin H Carroll, Fred Mo Cureus.2024;[Epub] CrossRef
Pelvic Incidence–Lumbar Lordosis Mismatch Is Predisposed to Adjacent Segment Degeneration After Single-Level Anterior Lumbar Interbody Fusion: A Retrospective Case-Control Study Sun Geon Yoon, Hyung Chang Lee, Sang-Min Lee Neurospine.2023; 20(1): 301. CrossRef
Spinal Canal Remodeling and Indirect Decompression of Contralateral Foraminal Stenosis After Endoscopic Posterolateral Transforaminal Lumbar Interbody Fusion Pang Hung Wu, Eugene Tze-Chun Lau, Hyeun-Sung Kim, Giovanni Grasso, Il-Tae Jang Neurospine.2023; 20(1): 99. CrossRef
Commentary: Risk Factors for Adjacent Segment Disease in Short Segment Lumbar Interbody Fusion—A Case Series Hani Chanbour, Iyan Younus, Scott L. Zuckerman Operative Neurosurgery.2023; 25(2): e64. CrossRef
Does pelvic incidence tell us the risk of proximal junctional kyphosis in adult spinal deformity surgery? Abdul Fettah Buyuk, John M. Dawson, Stefan Yakel, Eduardo C. Beauchamp, Amir A. Mehbod, Ensor E. Transfeldt, Pierre Roussouly European Spine Journal.2022; 31(6): 1438. CrossRef
L5–S1 nonunion occurrence even after anterior column support combined with iliac screw fixation in long fusion for adult spinal deformity: CT-based analysis at 2-year follow-up Se-Jun Park, Chong-Suh Lee, Jin-Sung Park, Tae-Hoon Yum, Tae Soo Shin, Ji-Woo Chang, Keun-Ho Lee Journal of Neurosurgery: Spine.2022; 37(3): 420. CrossRef
The Standing and Sitting Spino‐Pelvic Sagittal Alignment in Patients with Instrumented Lumbar Fusion Might Correlate with Adjacent Segment Degeneration Siyu Zhou, Woquan Zhong, Zhuoran Sun, Yang Guo, Yi Zhao, Wei Li, Weishi Li Orthopaedic Surgery.2022; 14(12): 3313. CrossRef
Objective The reported incidence of complications and/or adverse events (AEs) following spine surgery varies greatly. A validated, systematic, reproducible reporting system to quantify AEs was used in 2 prospective cohorts, from 2 spine surgery centers, conducting either complex or purely degenerative spine surgery; in a comparative fashion. The aim was to highlight the differences between 2 distinctly different prospective cohorts with patients from the same background population.
Methods AEs were registered according to the predefined AE variables in the SAVES (Spine AdVerse Events Severity) system which was used to record all intra- and perioperative AEs. Additional outcomes, including mortality, length of stay, wound infection requiring revision, readmission, and unplanned revision surgery during the index admission, were also registered.
Results A total of 593 complex and 1,687 degenerative procedures were consecutively included with 100% data completion. There was a significant difference in morbidity when comparing the total number of AEs between the 2 groups (p < 0.001): with a mean number of 1.42 AEs per patient (n = 845) in the complex cohort, and 0.97 AEs per patient (n = 1,630) in the degenerative cohort.
Conclusion In this prospective study comparing 2 cohorts, we report the rates of AEs related to spine surgery using a validated reproducible grading system for registration. The rates of morbidity and mortality were significantly higher following complex spine surgery compared to surgery for degenerative spine disease.
Citations
Citations to this article as recorded by
Protocol for the development of enhanced recovery after surgery (ERAS) recommendations for individuals undergoing surgery for degenerative cervical myelopathy Caroline A. Treanor, David B. Anderson, Benjamin M. Davies, Harvinder S. Chhabra, Mike Hutton, Laskhmikumar Venkatraghavan, Jed S. Lazarus, Anoushka Singh, Kieran J. Smith, Daniel J. Stubbs, Aditya Vedantam, Juan J. Zamorano, Carl M. Zipser, Thomas W. Wai Spinal Cord.2025; 63(12): 674. CrossRef
Independent Prognostic Factors Associated With Improved Patient-Reported Outcomes in the Prospective Evaluation of Elderly Deformity Surgery (PEEDS) Study Fthimnir M. Hassan, Lawrence G. Lenke, Sigurd H. Berven, Michael P. Kelly, Justin S. Smith, Christopher I. Shaffrey, Benny T. Dahl, Marinus de Kleuver, Maarten Spruit, Ferran Pellise, Kenneth M. C Cheung, Ahmet Alanay, David W. Polly, Jonathan Sembrano, Y Global Spine Journal.2024; 14(8): 2298. CrossRef
Comparative analysis of patient demographics, perioperative outcomes, and adverse events after lumbar spinal fusion between urban and rural hospitals: an analysis of the National Inpatient Sample (NIS) database Justin Im, Mohamed A.R. Soliman, Esteban Quiceno, Ahmed M. Elbayomy, Alexander O. Aguirre, Cathleen C. Kuo, Evan M. Sood, Asham Khan, Hannon W. Levy, Moleca M. Ghannam, John Pollina, Jeffrey P. Mullin Clinical Neurology and Neurosurgery.2024; 243: 108375. CrossRef
Development of a COX-2-Selective Fluorescent Probe for the Observation of Early Intervertebral Disc Degeneration Cheol Ho Heo, Eun Ji Roh, Jaehee Kim, Hyemin Choi, Ho Yeon Jang, Giseong Lee, Chang Su Lim, Inbo Han Journal of Functional Biomaterials.2023; 14(4): 192. CrossRef
First clinical experience with posterior lumbar interbody fusion using a thermal-sprayed silver-containing hydroxyapatite-coated cage Tadatsugu Morimoto, Masatsugu Tsukamoto, Katsuhiro Aita, Nobuyuki Fujita, Masaaki Mawatari Journal of Orthopaedic Surgery and Research.2023;[Epub] CrossRef
Screw Insertional Torque Measurement in Spine Surgery: Correlation With Bone Mineral Density and Hounsfield Unit Byeong Ho Oh, Jee Yong Kim, Jong Beom Lee, Jae Taek Hong, Jae Hoon Sung, Khoi D. Than, Ho Jin Lee, Il Sup Kim Neurospine.2023; 20(4): 1177. CrossRef
Objective To report the 1-year pre and postoperative analgesic use in patients undergoing primary surgery for adult spinal deformity (ASD) and assess risk factors for chronic postoperative opioid use.
Methods Patients > 18 years undergoing primary instrumented surgery for ASD in Denmark between 2006 and 2016 were identified in the Danish National Patient Registry. Information on analgesic use were obtained from the Danish National Health Service Prescription Database. Use of analgesics was calculated one year before and after surgery for each patient, per quarter (-Q4 to -Q1 before and Q1 to Q4 after). Users were defined as patient with one or more prescriptions in the given quarter.
Results We identified 892 patients. Preoperatively, 28% (n = 246) of patients were opioid users in -Q4 and 33% (n = 295) in -Q1. Postoperatively, 85% (n = 756) of patients were opioid users in Q1 and 31% (n = 280) in Q4. Proportions of users of other analgesics (paracetamol, antidepressants, and anticonvulsants) were stable before and after surgery. Use of nonsteroidal anti-inflammatory drug decreased postoperatively by 40% (-Q1 vs. Q4). 26% of patients had chronic preoperative opioid use (one or more prescriptions in each -Q2 and -Q1) and 24% had chronic postoperative use (prescription each of Q1–Q4). Multivariate logistic regression analysis showed age increment per 10 years and preoperative chronic opioid use as risk factors for chronic postoperative opioid use.
Conclusion One year after ASD surgery, opioid use was not reduced compared to preoperative usage.
Citations
Citations to this article as recorded by
Purchases of analgesics before and after spine surgery – register based study of 152,829 Finnish patients with 15-year follow-up Henri Mononen, Reijo Sund, Jukka Huopio, Heikki Kröger, Antti Malmivaara, Jyrki Salmenkivi, Timo Nyyssönen, Ville Turppo, Joonas Sirola European Spine Journal.2026; 35(5): 2945. CrossRef
Opioid Sparing Anesthesia for Adult Spinal Deformity Surgery Reduces Postoperative Pain, Length of Stay, Opioid Consumption, and Opioid-Related Complications Justin Mathew, Jeffrey L. Gum, Leah Y. Carreon, Benjamin C. Sampedro, Jennifer Harpe-Bates, Bren P. Hines, Morgan E. Brown, Christy L. Daniels, Tino Mkorombindo, Steven D. Glassman Spine.2025; 50(12): 804. CrossRef
Adult spinal deformity patients with spinal cord stimulators and intrathecal drug delivery devices do not have greater chronic opioid use after surgery Alexandra C. Dionne, Kurt Holuba, Riley Sevensky, Justin L. Reyes, Roy Miller, Fthimnir M. Hassan, Josephine R. Coury, Joseph M. Lombardi, Lawrence G. Lenke, Zeeshan M. Sardar Journal of Craniovertebral Junction and Spine.2025; 16(3): 320. CrossRef
Long-term opioid medication profile of European adult spinal deformity patients: minimum five years follow-up study Kadir Abul, Caglar Yilgor, Altug Yucekul, Nezih Arin Alanay, Yasemin Yavuz, Tais Zulemyan, Louis Boissiere, Anouar Bourghli, Ibrahim Obeid, Javier Pizones, Frank Kleinstueck, Francisco J.S. Perez-Grueso, Ferran Pellise, Ahmet Alanay The Spine Journal.2023; 23(2): 209. CrossRef
Geriatric relationship with inpatient opioid consumption and hospital outcomes after open posterior spinal fusion for adult spine deformity Aladine A. Elsamadicy, Mani Ratnesh S. Sandhu, Benjamin C. Reeves, Josiah J.Z. Sherman, Samuel Craft, Mica Williams, John H. Shin, Daniel M. Sciubba Clinical Neurology and Neurosurgery.2023; 224: 107532. CrossRef
Peri-operative optimization in adult spinal deformity surgery Bilal B. Butt, Jetan H. Badhiwala, Jason W. Savage Seminars in Spine Surgery.2023; 35(2): 101026. CrossRef
Optimizing Preoperative Chronic Pain Management in Elective Spine Surgery Patients Emily Arciero, Josephine R. Coury, Alexandra Dionne, Justin Reyes, Joseph M. Lombardi, Zeeshan M. Sardar JBJS Reviews.2023;[Epub] CrossRef
A national database propensity score-matched comparison of minimally invasive and open colectomy for long-term opioid use Amir L. Bastawrous, Kara K. Brockhaus, Melissa I. Chang, Gediwon Milky, I.-Fan Shih, Yanli Li, Robert K. Cleary Surgical Endoscopy.2022; 36(1): 701. CrossRef
Baseline Risk Factors for Prolonged Opioid Use Following Spine Surgery: Systematic Review and Meta-Analysis Shruthi Mohan, Conor P. Lynch, Elliot D.K. Cha, Kevin C. Jacob, Madhav R. Patel, Cara E. Geoghegan, Michael C. Prabhu, Nisheka N. Vanjani, Hanna Pawlowski, Kern Singh World Neurosurgery.2022; 159: 179. CrossRef
Opioid use prior to surgery is associated with worse preoperative and postoperative patient reported quality of life and decreased surgical cost effectiveness for symptomatic adult spine deformity; A matched cohort analysis Breton Line, Shay Bess, Jeffrey L. Gum, Richard Hostin, Khaled Kebaish, Christopher Ames, Douglas Burton, Gregory Mundis, Robert Eastlack, Munish Gupta, Eric Klineberg, Virgine Lafage, Renaud Lafage, Frank Schwab, Christopher Shaffrey, Justin S. Smith North American Spine Society Journal (NASSJ).2022; 9: 100096. CrossRef
Preoperative opioids before adult spinal deformity surgery associated with increased reoperations and high rates of chronic postoperative opioid use at 3-year follow-up Andre M. Samuel, Kyle W. Morse, Yuri A. Pompeu, Avani S. Vaishnav, Catherine Himo Gang, Han Jo Kim, Sheeraz A. Qureshi Spine Deformity.2022; 10(3): 615. CrossRef
Opioid and Analgesic Use Before and After Revision Knee Arthroplasty for the Indications “Pain Without Loosening” Versus “Aseptic Loosening” – A Danish Nationwide Study Kristine Bollerup Arndt, Henrik M. Schrøder, Anders Troelsen, Martin Lindberg-Larsen The Journal of Arthroplasty.2022; 37(8): 1618. CrossRef
Preoperative duration of pain is associated with chronic opioid use after adult spinal deformity surgery Kevin C. Mo, Rahul Sachdev, Bo Zhang, Amar Vadhera, Mark Ren, Nicholas S. Andrade, Khaled M. Kebaish, Richard L. Skolasky, Brian J. Neuman Spine Deformity.2022; 10(6): 1393. CrossRef
Use of Higher-strength Opioids has a Dose-Dependent Association With Reoperations After Lumbar Decompression and Interbody Fusion Surgery Andre M. Samuel, Francis C. Lovecchio, Ajay Premkumar, Philip K. Louie, Avani S. Vaishnav, Sravisht Iyer, Steven J. McAnany, Todd J. Albert, Catherine Himo Gang, Sheeraz A. Qureshi Spine.2021; 46(3): E203. CrossRef
An estimated 60% of the world’s population lives in Asia, where the incidence of neural tube defects is high. Aware that tethered cord syndrome (TCS) is an important comorbidity, the purpose of this systematic review was to explore the treatment of TCS among individuals living with spina bifida (SB) in Asia. MEDLINE and Embase databases were searched for relevant studies published from January 2000 to June 2018. Search terms such as ‘spinal dysraphism,’ ‘spinabifida,’ ‘diastematomyelia,’ ‘lipomeningocele,’ ‘lypomyelomeningocele,’ ‘meningomyelocele,’ and ‘tethered cord syndrome’ were used in diverse combinations. Of the 1,290 articles that were identified in accordance with PRISMA (Preferred Items for Systematic Reviews and Meta-Analyses) guidelines, 15 Asia-based studies met the inclusion criteria. Significant differences in the diagnostic criteria and management of TCS were documented. As the surgical techniques for prenatal closure of the spinal defect continue to evolve, their adoption internationally is likely to continue. In this setting, a clear and evidence-based approach to the definition and management of TCS is essential. The recent publication by the Spina Bifida Association of America of their updated care guidelines may serve as a tool used to promote a systematized approach to diagnosing and treating TCS among individuals with SB in the region, as well as globally.
Citations
Citations to this article as recorded by
Part 1: ‘In Utero and In India’: A Multidisciplinary Paradigm for Navigating the Clinical and Logistical Landscape of Fetal Open Spina Bifida Repair Sheena Ali, Samer K. Elbabaa Journal of Spinal Surgery.2026; 13(1): 35. CrossRef
Surgical outcomes of tethered cord syndrome in patients with normal conus medullaris and filum terminale without urologic symptoms Alper Tabanli, Emrah Akcay, Hakan Yilmaz, Seymen Ozdemir, Mesut Mete, Mehmet Selcuki Child's Nervous System.2025;[Epub] CrossRef
The Effect of Detethering Surgery on the Bladder Function and Psychology of Children with Primary Tethered Cord Syndrome Shuai Yang, Zhaokai Zhou, Xingchen Liu, Zhan Wang, Yanping Zhang, He Zhang, Lei Lv, Yibo Wen, Qingwei Wang, Wei Jia, Jinhua Hu, Jian Guo Wen International braz j urol.2025;[Epub] CrossRef
Classification of and individual treatment strategies for complex tethered cord syndrome Hepu Lin, Hui Su, Cuicui Li, Pengfei Zhang, Bo Xiu, Yunjing Bai, Ruxiang Xu Frontiers in Surgery.2024;[Epub] CrossRef
Fetal surgery for spina bifida – An upcoming standard of care Sheena Ali, Chandrashekhar Deopujari, Uday Andar, Samer K. Elbabaa Wadia Journal of Women and Child Health.2024; 2: 121. CrossRef
The utility of intraoperative ultrasonography for spinal cord surgery Hangeul Park, Jun-Hoe Kim, Chang-Hyun Lee, Sum Kim, Young-Rak Kim, Kyung-Tae Kim, Ji-hoon Kim, John M. Rhee, Woo-Young Jo, Hyongmin Oh, Hee-Pyoung Park, Chi Heon Kim, Barry Kweh PLOS ONE.2024; 19(7): e0305694. CrossRef
Analysis of a newly developed multidisciplinary program in the Middle East informed by the recently revised spina bifida guidelines Talia Collier, Jonathan Castillo, Lisa Thornton, Santiago Vallasciani, Heidi Castillo Journal of Pediatric Rehabilitation Medicine.2024; 17(4): 403. CrossRef
Dekyphosis operation combined with limited osteotomy to treat the symptomatic adult tethered cord syndrome with complicated malformations: A case report Liang Jiao, Xiao Yang, Shuang Wang, Jun-Xiong Ma, Liang Zheng, Hong Wang, Hai-Long Yu, Yu Chen Medicine.2023; 102(17): e33600. CrossRef
Foot deformity and quality of life among independently ambulating children with spina bifida in South Korea Hyeseon Yun, Eun Kyoung Choi, Hyun Woo Kim, Jeong Sook Ha, Doo Sung Kim, Kun-Bo Park BMC Pediatrics.2023;[Epub] CrossRef
URODYNAMIC EVALUATION AND PSYCHOLOGICAL-BEHAVIORAL PROFILE OF PRE-OPERATIVE AND POST-OPERATIVE IN CHILDREN WITH TETHERED CORD SYNDROME Z Zhou, S Yang, Q Wang, J Wen Continence.2023; 7: 100784. CrossRef
Evidence-Based Treatment, assisted by Mobile Technology to Deliver, and Evidence-Based Drugs in South Asian Countries Ankita Wal, Madhusmruti Khandai, Himangi Vig, Parul Srivastava, Alka Agarwal, Seema Wadhwani, Pranay Wal Archives of Pharmacy Practice.2022; 13(4): 63. CrossRef
Neonatal ten-year retrospective study on neural tube defects in a second level University Hospital Ettore Piro, Gregorio Serra, Ingrid Anne Mandy Schierz, Mario Giuffrè, Giovanni Corsello Italian Journal of Pediatrics.2020;[Epub] CrossRef
A Bibliographic Analysis of the Most Cited Articles in Global Neurosurgery Milagros Niquen-Jimenez, Danielle Wishart, Roxanna M. Garcia, Nathan A. Shlobin, Julia Steinle, Hannah Weiss, Rebecca A. Reynolds, Sandi Lam, Gail Rosseau World Neurosurgery.2020; 144: e195. CrossRef
Multidisciplinary Management of Tethered Spinal Cord Syndrome in Children: Operationalizing an Outpatient Patient-Centered Workflow
Mandana Behbahani, Nathan Shlobin, Colleen Rosen, Elizabeth Yerkes, Vineeta Swaroop, Sandi Lam, Robin Bowman Journal of Multidisciplinary Healthcare.2020; Volume 13: 1283. CrossRef
Neurosurgical training and global health education: systematic review of challenges and benefits of in-country programs in the care of neural tube defects Kellen Gandy, Heidi Castillo, Brandon G. Rocque, Viachaslau Bradko, William Whitehead, Jonathan Castillo Neurosurgical Focus.2020; 48(3): E14. CrossRef
The treatment of neurotrophic foot and ankle deformity of spinal bifida: 248 cases in single center Jiancheng Zang, Sihe Qin, Vigneshwaran P, Lei Shi, Xulei Qin Journal of Neurorestoratology.2019; 7(3): 153. CrossRef
Objective Magnetic resonance imaging (MRI)-verified neural axis abnormalities (NAAs) have been described in adolescent idiopathic scoliosis (AIS), and several risk factors have been associated with the presence of NAAs in AIS patients. However, the clinical significance of these findings is unclear. The purpose of the present study was to determine the prevalence of NAAs in a large consecutive cohort of AIS patients and to evaluate the clinical significance of previously proposed risk factors.
Methods We prospectively included AIS patients referred to a tertiary facility for evaluation. Full-spine MRI scans were performed on all included patients irrespective of curve magnitude or proposed treatment modality. MRI scans were prospectively analyzed by a neuroradiologist and the pathologic findings were confirmed by a second independent radiologist.
Results NAA was observed in 34 of the 381 patients (8.9%): 32 patients had a syrinx, 1 patient had an arachnoid cyst, and 1 patient had a Chiari malformation. Four patients were referred for a neurosurgical evaluation but none received any neurosurgical treatment. No statistically significant difference was observed between the NAA and non-NAA groups in terms of sex, major curve size, thoracic kyphosis, left thoracic curve, curve convexity, curve progression, or level of pain (p>0.05).
Conclusion In this prospective study examining the risk factors for NAA in AIS patients, we found that previously proposed risk factors could not predict the MRI outcomes. The finding of an NAA had no clinical implications and we do not support MRI scans as a routine diagnostic modality in all AIS patients.
Citations
Citations to this article as recorded by
Identification of Atypical Scoliosis Patterns Using X-ray Images Based on Fine-Grained Techniques in Deep Learning Yi Chen, Zhong He, Kenneth Guangpu Yang, Xiaodong Qin, Adam Yiu-Chung Lau, Zhen Liu, Neng Lu, Jack Chun-Yiu Cheng, Wayne Yuk-Wai Lee, Elvis Chun-Sing Chui, Yong Qiu, Xiaoli Liu, Xipu Chen, Zezhang Zhu Global Spine Journal.2026; 16(1): 501. CrossRef
Spinal Deformity Characteristics Associated With Intraspinal Anomalies in a Population of Presumed Adolescent Idiopathic Scoliosis (AIS) Connor Mathes, William Woodhams, John Anderson, Michael Benvenuti, K. Aaron Shaw Journal of Pediatric Orthopaedics.2026; 46(5): e436. CrossRef
Shoulder-Level Asymmetry Pre- and Post-Posterior Spinal Fusion in Adolescent Patients with Idiopathic Scoliosis Abdulmonem Alsiddiky, Sultana Borai, Sara N. Albqami, Musab Alageel, Abdurahman Addweesh, Nouf Abdulaziz Altwaijri Journal of Clinical Medicine.2026; 15(9): 3328. CrossRef
MRI in early stages of adolescent idiopathic scoliosis indicates a neuro-osseous growth mismatch associated with curve progression Søren Ohrt-Nissen, Cyrus Zamany, Peter Muhareb Udby, Sidsel Fruergaard, Nicolai Stefan Kaltoft, Martin Gehrchen, Benny Dahl European Spine Journal.2025; 34(2): 572. CrossRef
Current practices in MRI screening in early onset scoliosis Austin W. Li, Alexander Chang, Joshua S. Murphy, Ying Li, Benjamin Roye, Christina K. Hardesty, Michael P. Glotzbecker Spine Deformity.2025; 13(3): 961. CrossRef
Effects of Physiotherapeutic Scoliosis-Specific Exercise for Adolescent Idiopathic Scoliosis Cobb Angle: A Systematic Review Hiroki Oba, Kei Watanabe, Tomoyuki Asada, Akira Matsumura, Ryo Sugawara, Shinji Takahashi, Haruki Ueda, Satoshi Suzuki, Toru Doi, Takumi Takeuchi, Hideyuki Arima, Yu Yamato, Satoru Demura, Naobumi Hosogane Spine Surgery and Related Research.2025; 9(2): 120. CrossRef
Preoperative Evaluation of Adolescent Idiopathic Scoliosis: The Relevance of Routine Magnetic Resonance Imaging Majdi M Abu Awida, Awni A Shyyab, Shaher A Aletan, Mohammad A Adamat, Heba O Al Ofieshat, Ashraf A Al-Tamimi, Monther M Alessa Cureus.2025;[Epub] CrossRef
Letter to the editor concerning “MRI in early stages of adolescent idiopathic scoliosis indicates a neuro-osseous growth mismatch associated with curve progression” by S. Ohrt-Nissen (Eur spine J [2025]: doi.org/10.1007/s00586-024-08640-9) Eda Yıldırım, Uğur Yüzügüldü, Ömer Erşen European Spine Journal.2025; 34(10): 4837. CrossRef
Prevalence of Neural Axis Abnormalities in Typical and Atypical Laterality Idiopathic Scoliosis Irene Cortés-Pérez, Juan R. Gallego-Siles, Esteban Obrero-Gaitán, Alfonso J. Ibáñez-Vera, Ana B. Peinado-Rubia, Rafael Lomas-Vega Spine.2025; 50(22): E457. CrossRef
New approaches to identifying postural deviation in adolescence Tedi Prifti, Robert Çina Sustainability and Sports Science Journal.2025; 4(1): 25. CrossRef
Is “routine” magnetic resonance imaging necessary in adolescent idiopathic scoliosis? A retrospective analysis in New Zealand Hasanga Fernando, Euphemia Li, Antony Field, Hamish Deverall, Haemish Crawford, Joseph Frederick Baker Asian Spine Journal.2025; 19(5): 708. CrossRef
Evaluation of forces on muscles and intervertebral joints during active kyphosis-deepening exercises in the dynamic individual stimulation and control for spine device (DISC4SPINE, D4S): a modeling approach—proof of concept study Tomasz Szurmik, Karol Bibrowicz, Katarzyna Nowakowska-Lipiec, Hanna Zadoń, Robert Michnik, Andrzej Waldemar Mitas Frontiers in Sports and Active Living.2025;[Epub] CrossRef
Total spine MRI for the preoperative evaluation of adolescent idiopathic scoliosis: part 1 Hyojeong Lee, Fatima Janjua, Ahmed Ragab, Jay Moran, Andrew Haims, Daniel Rubio, Dominick Tuason, Jack Porrino Current Problems in Diagnostic Radiology.2024; 53(3): 405. CrossRef
HIDDEN NEURAXIAL PATHOLOGY IN IDIOPATHIC SCOLIOSIS: ORIGINAL RESEARCH Olga M. Sergeenko, Dmitry M. Savin, Anna A. Pozdeyeva, Marat S. Saifutdinov, Yuri V. Molotkov, Konstantin A. Diachkov Coluna/Columna.2024;[Epub] CrossRef
The Assessment of the Dynamics of Changes in the Torques of Redressing and Derotating Forces Acting on the Spine During Active Kyphosis-Deepening Exercises in the Dynamic Individual Stimulation and Control for Spine Device (DISC4SPINE, D4S) Tomasz Szurmik, Karol Bibrowicz, Patrycja Romaniszyn-Kania, Damian Kania, Katarzyna Ogrodzka-Ciechanowicz, Piotr Kurzeja, Andrzej W. Mitas Journal of Clinical Medicine.2024; 13(24): 7746. CrossRef
Neuromuscular disturbances in adolescent idiopathic scoliosis observed from the anticipatory muscle activations in scapula stabilizers: a cross-sectional study Yu Wang, Nan Xia, Minghui Gu, Zejian Chen, Jiang Xu, Li Wang, Yi Liao, Lingfeng Xie, Xiaolin Huang BMC Musculoskeletal Disorders.2024;[Epub] CrossRef
Spine Deformity Associated with Chiari I Malformation and Syringomyelia Somnath Das, Lauren Stone, Jakub Godzik, Michael Kelly Neurosurgery Clinics of North America.2023; 34(1): 151. CrossRef
Does magnetic resonance imaging impact pre-operative plans in adolescent idiopathic scoliosis patients? A retrospective study Suhail S. Al Assiri, Sami I. Al Eissa, Faisal M. Konbaz, Fahad H. Al Helal, Majed S. Abaalkhail, Mohammed J. AlSalman, Rayed M. Al Jehani, Abdullah F. Mohabbat Journal of Musculoskeletal Surgery and Research.2022; 6: 167. CrossRef
Adolescent idiopathic scoliosis: a review of current concepts Mohamed Mohamed, Jayesh Trivedi, Neil Davidson, Sudarshan Munigangaiah Paediatrics and Child Health.2022; 32(4): 119. CrossRef
The Last Touched Vertebra on Supine Radiographs Can Be the Optimal Lower Instrumented Vertebra in Adolescent Idiopathic Scoliosis Patients Do-Hyoung Kim, Seung-Jae Hyun, Chang-Hyun Lee, Ki-Jeong Kim Neurospine.2022; 19(1): 236. CrossRef
Surgical outcomes of posterior correction surgery for scoliosis associated with syringomyelia Osahiko Tsuji, Satoshi Suzuki, Yohei Takahashi, Satoshi Nori, Narihito Nagoshi, Eijiro Okada, Nobuyuki Fujita, Mitsuru Yagi, Masaya Nakamura, Morio Matsumoto, Kota Watanabe Interdisciplinary Neurosurgery.2022; 30: 101608. CrossRef
Physiotherapeutic Scoliosis-Specific Exercise Methodologies Used for Conservative Treatment of Adolescent Idiopathic Scoliosis, and Their Effectiveness: An Extended Literature Review of Current Research and Practice Vaiva Seleviciene, Aiste Cesnaviciute, Birute Strukcinskiene, Ludmiła Marcinowicz, Neringa Strazdiene, Agnieszka Genowska International Journal of Environmental Research and Public Health.2022; 19(15): 9240. CrossRef
The use of MRI in the study of patients with idiopathic scoliosis: a systematic review of the literature O. M. Sergeenko, D. M. Savin, Yu. V. Molotkov, M. S. Saifutdinov Hirurgiâ pozvonočnika (Spine Surgery).2022; 19(4): 30. CrossRef
Will the COVID-19 pandemic increase the prevalence of idiopathic scoliosis? Ziyang Liu, Wenbo Jiang, Yong Hai, Yufu Liu, Tie Liu Medical Hypotheses.2021; 147: 110477. CrossRef
Selection of Fusion Level for Adolescent Idiopathic Scoliosis Surgery : Selective Fusion versus Postoperative Decompensation Do-Hyoung Kim, Seung-Jae Hyun, Ki-Jeong Kim Journal of Korean Neurosurgical Society.2021; 64(4): 473. CrossRef
Whole-Spine Magnetic Resonance Imaging Brandon Nudelman, Ashish Mittal, Alexander Rosinski, Nikita Zaborovskii, Samuel Wu, Dimitriy Kondrashov JBJS Reviews.2021;[Epub] CrossRef
Entire-spine Magnetic Resonance Imaging Findings and Costs in Children With Presumed Adolescent Idiopathic Scoliosis Mitchell A. Johnson, Shivani Gohel, Stuart L. Mitchell, John (Jack) M. Flynn, Keith D. Baldwin Journal of Pediatric Orthopaedics.2021; 41(10): 585. CrossRef
Posterior-only versus combined anterior-posterior fusion in Scheuermann disease: a systematic review and meta-analysis Chang-Hyun Lee, Young II Won, Young San Ko, Seung Heon Yang, Chi Heon Kim, Sung Bae Park, Chun Kee Chung Journal of Neurosurgery: Spine.2021; 34(4): 608. CrossRef
Adolescent idiopathic scoliosis: a review of current concepts Mohamed Mohamed, Jayesh Trivedi, Neil Davidson, Sudarshan Munigangaiah Orthopaedics and Trauma.2020; 34(6): 338. CrossRef
The surgical treatment of adolescent idiopathic scoliosis (AIS) involves 3-dimensional curve correction with multisegmental pedicle screws attached to contoured bilateral rods. The substantial corrective forces exert a high level of stress on the rods, and the ability of the rod to withstand these forces without undergoing permanent deformation relies on its biomechanical properties. These properties, in turn, are dependent on the material, diameter, and shape of the rod. The surgical treatment of AIS is characterized by the requirement for a special biomechanical profile that may differ substantially from what is needed for adult deformity surgery. This overview summarizes the current knowledge of rod biomechanics in frequently used rod constructs, with a particular focus on translational research between biomechanical studies and clinical applicability in AIS patients.
Citations
Citations to this article as recorded by
Advancing Scoliosis Treatment with Patient-Specific Functionally Graded NiTi-SMA Rods: Key Considerations and Development Objectives Shiva Mohajerani, Alireza Behvar, Athena Jalalian, Ahu Celebi, Mohammad Elahinia Bioengineering.2026; 13(2): 216. CrossRef
TiNbSn alloy spine rods resistant to fatigue fracture and flattening Shuji Hanada, Hitoshi Soyama, Toshimi Aizawa, Yu Mori, Ko Hashimoto, Satoshi Semboshi, Hiroaki Matsumoto Journal of the Mechanical Behavior of Biomedical Materials.2026; : 107503. CrossRef
Analysis of scoliosis rod deformation after cutting with a surgical rod cutter James Egan, Collin T. Erickson, Kierstin Bennett, Grace E. Tideman, Richard M. Schwend, Elizabeth A. Friis, John T. Anderson Spine Deformity.2025; 13(4): 979. CrossRef
Lateral view fulcrum bending radiographs predict postoperative hypokyphosis after selective thoracic fusion in adolescent idiopathic scoliosis Victoria Yuk Ting Hui, Jason Pui Yin Cheung, Prudence Wing Hang Cheung Asian Spine Journal.2025; 19(1): 102. CrossRef
Magnetically controlled rod fracture is related to rod diameter but lower than TGR Matthew Weintraub, Omar Taha, Ritt Givens, Matan Malka, Mehdi M. Elfilali, Kevin Lu, Paul Sponseller, Peter Sturm, Oheneba Boachie-Adjei, John Emans, Francisco Sánchez Pérez-Grueso, Michael G. Vitale, Benjamin D. Roye Spine Deformity.2025; 13(4): 1269. CrossRef
Variation in Mechanical Properties of 5.5 mm Cobalt Chromium and Titanium Spinal Rods Across Suppliers Vidyadhar V. Upasani, Dylan G. Kluck, Christine L. Farnsworth, Naman U. Shah, Burt Yaszay, Jason P. Caffrey, Peter O. Newton Journal of Orthopaedic Research.2025; 43(8): 1493. CrossRef
Single-stage posterior approach with Ponte osteotomies and use of beam rods for correction of high-grade rigid Adolescent Idiopathic scoliosis: Case series Adham E. M. Mousa, Ahmed A. E. Nenaa, Moustafa Saad, Ian Crowther, Benjamin Smith, Thompson Opara, Zak Choudhury, Waleed Hekal Current Orthopaedic Practice.2025;[Epub] CrossRef
Mechanical axial instability of segmental pedicle screw instrumentation for adolescent idiopathic scoliosis: a retrospective cohort study of tulip screw versus dual locking cup instrumentation Aron Frantzén, Antti Saarinen, Eetu Suominen, Matti Ahonen, Ilkka Helenius Acta Orthopaedica.2025;[Epub] CrossRef
Biomechanical Analysis of 2 Versus 4 Rods Across the Cervicothoracic Junction in a Human Cadaveric Model Gnel Pivazyan, Carlynn G. Winters, Daina M. Brooks, Faheem A. Sandhu, Bryan W. Cunningham Neurosurgery.2024; 94(1): 217. CrossRef
The Influence of Increased Pedicle Screw Diameter and Thicker Rods on Surgical Results in Adolescents Undergoing Posterior Spinal Fusion for Idiopathic Scoliosis Pawel Grabala, Piotr Kowalski, Michal Grabala Journal of Clinical Medicine.2024; 13(8): 2174. CrossRef
Validation of a new method for the radiological measurement of rod curvature in patients with spine deformity Daniel Larrieu, Alice Baroncini, Ayman Assi, Cecile Roscop, Louis Boissiere, Ibrahim Obeid Spine Deformity.2024; 12(6): 1773. CrossRef
Effect of implant length variations on stress shielding in proximal humeral replacement after tumor excision under torsion: Finite element study Pivatidevi Pareatumbee, Suraya Zainul‐Abidin, Andy Yew, Siaw M. Chou, Tet Sen Howe, Joyce S. B. Koh, Mann Hong Tan Journal of Orthopaedic Research.2023; 41(6): 1139. CrossRef
Rod Attachment Induces Significant Strain in Lumbosacral Fixation Anna G.U. Sawa, Piyanat Wangsawatwong, Jennifer N. Lehrman, Taylor Hostetler, Bernardo de Andrada Pereira, Jakub Godzik, Randall J. Hlubek, Juan S. Uribe, Jay D. Turner, Brian P. Kelly Clinical Spine Surgery.2023; 36(6): E247. CrossRef
Design and 3D printing of novel titanium spine rods with lower flexural modulus and stiffness profile with optimised imaging compatibility Naresh Kumar, Sridharan Alathur Ramakrishnan, Keith Gerard Lopez, Niyou Wang, Sirisha Madhu, Balamurugan A. Vellayappan, James TPD Hallinan, Jerry Ying Hsi Fuh, A. Senthil Kumar European Spine Journal.2023; 32(6): 1953. CrossRef
Direct Vertebral Rotation (DVR) Does Not Improve Clinical and Radiological Results Compared to Differential Rod Contouring (DRC) in Patients Treated Surgically for Idiopathic Scoliosis Wiktor Urbanski, Piotr Markowski, Rafal Zaluski, Anis Kokaveshi, Piotr Morasiewicz Journal of Clinical Medicine.2023; 12(12): 4091. CrossRef
Maximizing mechanical advantage: surgical technique increases stiffness in spinal instrumentation Corey A. Burke, Joshua N. Speirs, Scott C. Nelson Spine Deformity.2022; 10(2): 295. CrossRef
Association of frailty with regional sagittal spinal alignment in the elderly Yun Gi Hong, Hyung-Cheol Kim, Hyeongseok Jeon, Seong Bae An, Ji Yeon Lee, Jong Joo Lee, Kwang Joon Kim, Chang Oh Kim, Dong Ah Shin, Seong Yi, Keung Nyun Kim, Do Heum Yoon, Tae Woo Kim, Yoon Ha Journal of Clinical Neuroscience.2022; 96: 172. CrossRef
A Novel Three-Dimensional Computational Method to Assess Rod Contour Deformation and to Map Bony Fusion in a Lumbopelvic Reconstruction After En-Bloc Sacrectomy Peter Endre Eltes, Mate Turbucz, Jennifer Fayad, Ferenc Bereczki, György Szőke, Tamás Terebessy, Damien Lacroix, Peter Pal Varga, Aron Lazary Frontiers in Surgery.2022;[Epub] CrossRef
Metallic Implants Used in Lumbar Interbody Fusion Jakub Litak, Michał Szymoniuk, Wojciech Czyżewski, Zofia Hoffman, Joanna Litak, Leon Sakwa, Piotr Kamieniak Materials.2022; 15(10): 3650. CrossRef
Systematic review and meta-analysis for the impact of rod materials and sizes in the surgical treatment of adolescent idiopathic scoliosis Dawn Bowden, Annalisa Michielli, Michelle Merrill, Steven Will Spine Deformity.2022; 10(6): 1245. CrossRef
Beam-Like rods do not Provide Additional Improvement to Thoracic Kyphosis Restoration when Compared to Sagittal Reinforced rods in Adolescents Undergoing Spinal Fusion with Pedicle Screw Instrumentation for Idiopathic Scoliosis Eetu N. Suominen, Antti J. Saarinen, Johanna Syvänen, Matti Ahonen, Linda Helenius, Ilkka J. Helenius World Neurosurgery.2022; 168: e555. CrossRef
Risk Factors of Proximal Junctional Kyphosis in Adolescent Idiopathic Scoliosis—The Spinous Processes and Proximal Rod Contouring Kathrin Boeckenfoerde, Albert Schulze Boevingloh, Georg Gosheger, Sebastian Bockholt, Lukas Peter Lampe, Tobias Lange Journal of Clinical Medicine.2022; 11(20): 6098. CrossRef
In silico patient-specific optimization of correction strategies for thoracic adolescent idiopathic scoliosis Luigi La Barbera, A. Noelle Larson, Jeremy Rawlinson, Carl-Eric Aubin Clinical Biomechanics.2021; 81: 105200. CrossRef
Surgical Impacts of Metastatic Non-small Cell Lung Cancer to the Thoracic and Lumbar Spine Jong-myung Jung, Seung-Jae Hyun, Ki-Jeong Kim Journal of Korean Medical Science.2021;[Epub] CrossRef
How do spine instrumentation parameters influence the 3D correction of thoracic adolescent idiopathic scoliosis? A patient-specific biomechanical study Luigi La Barbera, A. Noelle Larson, Carl-Eric Aubin Clinical Biomechanics.2021; 84: 105346. CrossRef
Sagittal reduction of spinal deformity: Superior versus lateral screw-rod connection Solène Prost, Sébastien Pesenti, Kaissar Farah, Patrick Tropiano, Stéphane Fuentes, Benjamin Blondel Orthopaedics & Traumatology: Surgery & Research.2021; 107(7): 102954. CrossRef
Réduction des déformations rachidiennes dans le plan sagittal : impact de la connexion tige-vis supérieure versus latérale Solène Prost, Sébastien Pesenti, Kaissar Farah, Patrick Tropiano, Stéphane Fuentes, Benjamin Blondel Revue de Chirurgie Orthopédique et Traumatologique.2021; 107(7): 826. CrossRef
The Effect of 3D Printing Metal Materials on Osteoporosis Treatment Bing Wang, Chuwen Feng, Jianyu Pan, Shuoyan Zhou, Zhongren Sun, Yuming Shao, Yuanyuan Qu, Shengyong Bao, Yang Li, Tiansong Yang, Lei Jiang BioMed Research International.2021;[Epub] CrossRef
Biomechanical Comparison of Fixation Stability among Various Pedicle Screw Geometries: Effects of Screw Outer/Inner Projection Shape and Thread Profile Ming-Kai Hsieh, Yun-Da Li, Mu-Yi Liu, Chen-Xue Lin, Tsung-Ting Tsai, Po-Liang Lai, Ching-Lung Tai Applied Sciences.2021; 11(21): 9901. CrossRef
Cobalt-chromium versus titanium alloy rods for correction of adolescent idiopathic scoliosis based on 1-year follow-up: a multicenter randomized controlled clinical trial Daisuke Sakai, Masato Tanaka, Jun Takahashi, Yuki Taniguchi, Jordy Schol, Akihiko Hiyama, Haruo Misawa, Shugo Kuraishi, Hiroki Oba, Yoshitaka Matsubayashi, So Kato, Ryo Sugawara, Masato Sato, Masahiko Watanabe, Katsushi Takeshita Journal of Neurosurgery: Spine.2021; 34(6): 897. CrossRef
Biomechanical effects of a novel posteriorly placed sacroiliac joint fusion device integrated with traditional lumbopelvic long-construct instrumentation Bernardo de Andrada Pereira, Jennifer N. Lehrman, Anna G. U. Sawa, Derek P. Lindsey, Scott A. Yerby, Jakub Godzik, Alexis M. Waguespack, Juan S. Uribe, Brian P. Kelly Journal of Neurosurgery: Spine.2021; 35(3): 320. CrossRef
Radiographic and Clinical Outcomes Following Pedicle Subtraction Osteotomy : Minimum 2-Year Follow-Up Data Ho Yong Choi, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng, Hyun-Jib Kim Journal of Korean Neurosurgical Society.2020; 63(1): 99. CrossRef
Association of Frailty and Self-Care Activity With Sagittal Spinopelvic Alignment in the Elderly Tae Woo Kim, Jae Keun Oh, Ji Yeon Lee, Samuel K. Cho, Seong Bae An, Hyeong Seok Jeon, Hyung Cheol Kim, Kwang Joon Kim, Dong Ah Shin, Seong Yi, Keung Nyun Kim, Do Heum Yoon, Chang Oh Kim, Yoon Ha World Neurosurgery.2020; 138: e759. CrossRef
Are precontoured cobalt–chromium spinal rods mechanically superior to manually contoured rods? K. Aaron Shaw, Dennis P. Devito, Michael L. Schmitz, Joshua S. Murphy Spine Deformity.2020; 8(5): 871. CrossRef
Surgical Strategies for Cervical Deformities Associated With Neuromuscular Disorders Jong Joo Lee, Sung Han Oh, Yeong Ha Jeong, Sang Man Park, Hyeong Seok Jeon, Hyung-Cheol Kim, Seong Bae An, Dong Ah Shin, Seong Yi, Keung Nyun Kim, Do Heum Yoon, Jun Jae Shin, Yoon Ha Neurospine.2020; 17(3): 513. CrossRef
Surgical Outcomes and Complications Following All Posterior Approach for Spinal Deformity Associated with Neurofibromatosis Type-1 Byoung-Joo Park, Seung-Jae Hyun, Seong-Hyun Wui, Jong-Myung Jung, Ki-Jeong Kim, Tae-Ahn Jahng Journal of Korean Neurosurgical Society.2020; 63(6): 738. CrossRef
Polyetheretherketone and Its Composites for Bone Replacement and Regeneration Chengzhu Liao, Yuchao Li, Sie Chin Tjong Polymers.2020; 12(12): 2858. CrossRef
Rod fracture after multiple-rod constructs for adult spinal deformity Jong-myung Jung, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng Journal of Neurosurgery: Spine.2020; 32(3): 407. CrossRef
Effect of Vertebroplasty at the Upper Instrumented Vertebra and Upper Instrumented Vertebra +1 for Prevention of Proximal Junctional Failure in Adult Spinal Deformity Surgery: A Comparative Matched-Cohort Study Sanghyun Han, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng, Se-Il Jeon, Seong-Hyun Wui, Jin Young Lee, Subum Lee, Seung-Chul Rhim, Sungkyun Chung, Jeesoo Jang, Byoung Hun Lee World Neurosurgery.2019; 124: e436. CrossRef
Computer‐assisted pedicle screw trajectory planning using CT‐inferred bone density: A demonstration against surgical outcomes Dejan Knez, Imad S. Nahle, Tomaž Vrtovec, Stefan Parent, Samuel Kadoury Medical Physics.2019; 46(8): 3543. CrossRef
Anatomic Trajectory Screw Fixation at Upper Instrumented Vertebra Is a Substantial Risk Factor for Proximal Junctional Kyphosis Jong-Myung Jung, Seung-Jae Hyun, Ki-Jeong Kim, Tae-Ahn Jahng, Hyun-Jib Kim, Yunhee Choi World Neurosurgery.2019; 129: e522. CrossRef
A finite element study on intra-operative corrective forces and evaluation of screw density in scoliosis surgeries Ameneh Musapoor, Mohammad Nikkhoo, Mohammad Haghpanahi Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine.2018; 232(12): 1245. CrossRef
First
Prev
