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AJNR Awards, New Junior Editors, and more. Read the latest AJNR updates


Improved Turnaround Times | Median time to first decision: 12 days

MY CONTENT

  • Spine Imaging and Spine Image-Guided Interventions
    Open Access
    Lateral Decubitus Digital Subtraction Myelography: Tips, Tricks, and Pitfalls
    D.K. Kim, W. Brinjikji, P.P. Morris, F.E. Diehn, V.T. Lehman, G.B. Liebo, J.M. Morris, J.T. Verdoorn, J.K. Cutsforth-Gregory, R.I. Farb, J.C Benson and C.M. Carr
    American Journal of Neuroradiology January 2020, 41 (1) 21-28; DOI: https://doi.org/10.3174/ajnr.A6368
  • EDITOR'S CHOICESpine Imaging and Spine Image-Guided Interventions
    You have access
    Number Needed to Treat with Vertebral Augmentation to Save a Life
    J.A. Hirsch, R.V. Chandra, N.S. Carter, D. Beall, M. Frohbergh and K. Ong
    American Journal of Neuroradiology January 2020, 41 (1) 178-182; DOI: https://doi.org/10.3174/ajnr.A6367

    The purpose of this study was to calculate the number needed to treat to save 1 life at 1 year and up to 5 years after vertebral augmentation. A 10-year sample of the 100% US Medicare data base was used to identify patients with vertebral compression fractures treated with nonsurgical management, balloon kyphoplasty, and vertebroplasty. The number needed to treat was calculated between augmentation and nonsurgical management groups from years 1–5 following a vertebral compression fracture diagnosis, using survival probabilities for each management approach. The adjusted number needed to treat to save 1 life for nonsurgical management versus kyphoplasty ranged from 14.8 at year 1 to 11.9 at year 5. The adjusted number needed to treat for nonsurgical management versus vertebroplasty ranged from 22.8 at year 1 to 23.8 at year 5. The authors conclude that the NNT analysis of more than 2 million patients with VCF reveals that only 15 patients need to be treated to save 1 life at 1 year. This has an obvious clinically significant impact and given that all augmentation clinical trials are underpowered to detect a mortality benefit, this large dataset analysis reveals that vertebral augmentation provides a significant mortality benefit over nonsurgical management with a low NNT.

  • Spine Imaging and Spine Image-Guided Interventions
    You have access
    Simple Fluoroscopy-Guided Transforaminal Lumbar Puncture: Safety and Effectiveness of a Coaxial Curved-Needle Technique in Patients with Spinal Muscular Atrophy and Complex Spines
    J.P. Jacobson, B.C. Cristiano and D.R. Hoss
    American Journal of Neuroradiology January 2020, 41 (1) 183-188; DOI: https://doi.org/10.3174/ajnr.A6351
  • Spine Imaging and Spine Image-Guided Interventions
    You have access
    Long-Term Outcome of Patients with Spinal Dural Arteriovenous Fistula: The Dilemma of Delayed Diagnosis
    F. Jablawi, G.A. Schubert, M. Dafotakis, J. Pons-Kühnemann, F.-J. Hans and M. Mull
    American Journal of Neuroradiology January 2020, DOI: https://doi.org/10.3174/ajnr.A6372
  • Spine Imaging and Spine Image-Guided Interventions
    Open Access
    Number Needed to Treat with Vertebral Augmentation to Save a Life
    J.A. Hirsch, R.V. Chandra, N.S. Carter, D. Beall, M. Frohbergh and K. Ong
    American Journal of Neuroradiology December 2019, DOI: https://doi.org/10.3174/ajnr.A6367
  • Spine Imaging and Spine Image-Guided Interventions
    Open Access
    Lateral Decubitus Digital Subtraction Myelography: Tips, Tricks, and Pitfalls
    D.K. Kim, W. Brinjikji, P.P. Morris, F.E. Diehn, V.T. Lehman, G.B. Liebo, J.M. Morris, J.T. Verdoorn, J.K. Cutsforth-Gregory, R.I. Farb, J.C Benson and C.M. Carr
    American Journal of Neuroradiology December 2019, DOI: https://doi.org/10.3174/ajnr.A6368
  • Spine Imaging and Spine Image-Guided Interventions
    You have access
    Number Needed to Treat with Vertebral Augmentation to Save a Life
    J.A. Hirsch, R.V. Chandra, N.S. Carter, D. Beall, M. Frohbergh and K. Ong
    American Journal of Neuroradiology December 2019, DOI: https://doi.org/10.3174/ajnr.A6367
  • EDITOR'S CHOICESpine Imaging and Spine Image-Guided Interventions
    You have access
    Anatomy of the Great Posterior Radiculomedullary Artery
    V.H. Perez Perez, J. Hernesniemi and J.E. Small
    American Journal of Neuroradiology December 2019, 40 (12) 2010-2015; DOI: https://doi.org/10.3174/ajnr.A6304

    The authors describe the microsurgical anatomy of the great posterior radiculomedullary artery with emphasis on its morphometric parameters as well as its implications for spinal cord blood supply. The artery of Adamkiewicz in spinal cord specimens (n = 50) was injected with colored latex until the small-caliber arterial vessels were filled and the great posterior radiculomedullary artery was identified. The course, diameter, and location of great posterior radiculomedullary artery were documented. A great posterior radiculomedullary artery was identified in 36 (72%) spinal cord specimens. In 11 (22%) specimens, bilateral great posterior radiculomedullary arteries were present. In 13 cases (26%), a unilateral left-sided great posterior radiculomedullary artery was identified. In 11 cases (22%), a unilateral right-sided great posterior radiculomedullary artery was identified.

  • Spine Imaging and Spine Image-Guided Interventions
    You have access
    Simple Fluoroscopy-Guided Transforaminal Lumbar Puncture: Safety and Effectiveness of a Coaxial Curved-Needle Technique in Patients with Spinal Muscular Atrophy and Complex Spines
    J.P. Jacobson, B.C. Cristiano and D.R. Hoss
    American Journal of Neuroradiology December 2019, DOI: https://doi.org/10.3174/ajnr.A6351
  • FELLOWS' JOURNAL CLUBSpine Imaging and Spine Image-Guided Interventions
    You have access
    Armed Kyphoplasty: An Indirect Central Canal Decompression Technique in Burst Fractures
    A. Venier, L. Roccatagliata, M. Isalberti, P. Scarone, D.E. Kuhlen, M. Reinert, G. Bonaldi, J.A. Hirsch and A. Cianfoni
    American Journal of Neuroradiology November 2019, 40 (11) 1965-1972; DOI: https://doi.org/10.3174/ajnr.A6285

    This study assesses the results of armed kyphoplasty using vertebral body stents or the SpineJack in traumatic, osteoporotic, and neoplastic burst fractures with respect to vertebral body height restoration and correction of posterior wall retropulsion. The authors performed a retrospective assessment of 53 burst fractures with posterior wall retropulsion and no neurologic deficit in 51 consecutive patients treated with armed kyphoplasty. Posterior wall retropulsion and vertebral body height were measured on pre- and postprocedural CT. Armed kyphoplasty was performed as a stand-alone treatment in 43 patients, combined with posterior instrumentation in 8 and laminectomy in 4. Pre-armed kyphoplasty and post-armed kyphoplasty mean posterior wall retropulsion was 5.8 and 4.5 mm, respectively, and mean vertebral body height was 10.8 and 16.7 mm, respectively. They conclude that in the treatment of burst fractures with posterior wall retropulsion and no neurologic deficit, armed kyphoplastyyields fracture reduction, internal fixation, and indirect central canal decompression.

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