دسترسی یکساله به بیش از ۵۰۰ ژورنال روز جهان موجود در سامانه
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Impact of predominant symptom location among patients undergoing cervical spine surgery on 12-month outcomes: an analysis from the Quality Outcomes Database
Clinton J. Devin MD1,2, Anthony L. Asher MD3, Mohammed Ali Alvi MBBS, MS4, Yagiz U. Yolcu MD4, Panagiotis Kerezoudis MD, MS4, Christopher I. Shaffrey MD5, Erica F. Bisson MD, MPH6, John J. Knightly MD7, Praveen V. Mummaneni MD, MBA8, Kevin T. Foley MD9, and Mohamad Bydon MD4
doi : 10.3171/2020.12.SPINE202002
Volume 35: Issue 4, page: 399–409
The impact of the type of pain presentation on outcomes of spine surgery remains elusive. The aim of this study was to assess the impact of predominant symptom location (predominant arm pain vs predominant neck pain vs equal neck and arm pain) on postoperative improvement in patient-reported outcomes.
Impact of focal apex angle on postoperative decompression status of the spinal cord and neurological recovery after cervical laminoplasty
Shinya Kato MD1,2,3, Hisanori Mihara MD, PhD2, Takanori Niimura MD2, Kenichi Watanabe MD1, Takuya Kawai MD1, Hyonmin Choe MD, PhD3, and Yutaka Inaba MD, PhD3
doi : 10.3171/2020.12.SPINE201831
Volume 35: Issue 4, page: 410–418
Although anterior compression factors and cervical alignment affect neural decompression, cervical laminoplasty may be used to achieve indirect posterior decompression. The focal apex (FA) angle of the anterior compression factor of the spine represents the degree of anterior prominence toward the spinal cord. The authors investigated the mechanism underlying the influence of FA angle and cervical alignment on spinal cord alignment (SCA) after laminoplasty, including how high-intensity signal cord change (HISCC) on preoperative T2-weighted MRI (T2-MRI) may affect neurological improvement.
Does transforaminal lumbar interbody fusion induce lordosis or kyphosis? Radiographic evaluation with a minimum 2-year follow-up
Jinping Liu MD1,2, Pingguo Duan MD1, Praveen V. Mummaneni MD, MBA1, Rong Xie MD1, Bo Li MD1, Yinhui Dong MD1, Sigurd Berven MD1, and Dean Chou MD1
doi : 10.3171/2020.12.SPINE201665
Volume 35: Issue 4, page: 419–426
Conflicting reports exist about whether transforaminal lumbar interbody fusion (TLIF) induces lordosis or kyphosis, ranging from decreasing lordosis by 3.71° to increasing it by 18.8°. In this study, the authors’ aim was to identify factors that result in kyphosis or lordosis after TLIF.
Retrograde ejaculation following anterior lumbar surgery: a systematic review and pooled analysis
Alaina M. Body MD1, Zachary J. Plummer MD1, Bryan M. Krueger MD1, Justin Virojanapa DO1, Rani Nasser MD1, Joseph S. Cheng MD1, and Charles J. Prestigiacomo MD1
doi : 10.3171/2020.12.SPINE201101
Volume 35: Issue 4, page: 427–436
The present systematic review and pooled analysis aims to assess the incidence and risk factors for the development of retrograde ejaculation (RE) following first-time open anterior lumbar surgery.
Clinical outcomes in revision lumbar spine fusions: an observational cohort study
Thiago S. Montenegro MD1, Glenn A. Gonzalez MD1, Fadi Al Saiegh MD1, Lucas Philipp MD1, Kevin Hines MD1, Ellina Hattar MD1, Daniel Franco MD1, Aria Mahtabfar MD1, Kavantissa M. Keppetipola MD1, Adam Leibold MD1, Elias Atallah MD1, Umma Fatema BS1, Sara Thalheimer BA1, Chengyuan Wu MD, MSBME1, Srinivas K. Prasad MD, MS1, Jack Jallo MD, PhD1, Joshua Heller MD, MBA1, Ashwini Sharan MD, MSHQS1, and James Harrop MD, MSHQS1
doi : 10.3171/2020.12.SPINE201908
Volume 35: Issue 4, page: 437–445
The authors compared primary lumbar spine fusions with revision fusions by using patient Oswestry Disability Index (ODI) scores to evaluate the impact of the North American Spine Society (NASS) evidence-based medicine (EBM) lumbar fusion indications on patient-reported outcome measures of revision surgeries.
Variability in the distance from the end of the gray matter to the end of the conus medullaris: a case-triggered histological investigation
Maximilian Scheer MD1, Bruno Griesler2, Elisabeth Ottlik2, Christian Strauss MD1, Christian Mawrin MD4, Christian Kunze MD3, Julian Prell MD1, Stefan Rampp MD1, Sebastian Simmermacher MD1, Jörg Illert1, Heike Kielstein MD2, and Christian Scheller MD1
doi : 10.3171/2020.12.SPINE201890
Volume 35: Issue 4, page: 446–453
The background for this investigation was the dramatic course of a 14-year-old girl with a spontaneous hemorrhage in the area of the conus medullaris resulting in a complete cross-sectional syndrome with bladder and bowel dysfunction. Despite immediate surgical treatment, the patient showed close to no postoperative improvement. Subsequent histopathological examination of the removed masses revealed a cavernoma. To better understand the link between the site and symptoms of conus medullaris lesions, the authors performed a literature search and then histological examination of the conus medullaris of 18 cadaveric specimens from body donors.
Effect of segmental lordosis on early-onset adjacent-segment disease after posterior lumbar interbody fusion
Shinya Okuda MD, PhD1, Yukitaka Nagamoto MD, PhD1, Shota Takenaka MD, PhD2, Masato Ikuta MD1, Tomiya Matsumoto MD, PhD1, Yoshifumi Takahashi MD1, Masayuki Furuya MD, PhD1, and Motoki Iwasaki MD, PhD1
doi : 10.3171/2020.12.SPINE201888
Volume 35: Issue 4, page: 454–459
Although several reports have described adjacent-segment disease (ASD) after posterior lumbar interbody fusion (PLIF), there have been only a few reports focusing on early-onset ASD occurring within 3 years after primary PLIF. The purpose of this study was to investigate the prevalence and postoperative pathologies of early-onset ASD and its relation with radiological parameters such as segmental lordosis (SL).
Does minimally invasive spine surgery improve outcomes in the obese population? A retrospective review of 1442 degenerative lumbar spine surgeries
Austin H. Carroll BA1, Ehsan Dowlati MD2, Esteban Molina MS1, David Zhao MD2, Marcelle Altshuler MD3, Kyle B. Mueller MD2, Faheem A. Sandhu MD, PhD2, and Jean-Marc Voyadzis MD2
doi : 10.3171/2021.1.SPINE201785
Volume 35: Issue 4, page: 460–470
The effect of obesity on outcomes in minimally invasive surgery (MIS) approaches to posterior lumbar surgery is not well characterized. The authors aimed to determine if there was a difference in operative variables and complication rates in obese patients who underwent MIS versus open approaches in posterior spinal surgery, as well as between obese and nonobese patients undergoing MIS approaches.
Resolution of the lumbosacral fractional curve and evaluation of the risk for adding on in 101 patients with posterior correction of Lenke 3, 4, and 6 curves
Heiko Koller MD1, Meric Enercan MD2, Sebastian Decker MD3, Hossein Mehdian MD, FRCS4, Luigi Aurelio Nasto MD, PhD5, Wolfgang Hitzl PhD, MSc6,7,8, Juliane Koller MD9, Axel Hempfing MD10, and Azmi Hamzaoglu MD2
doi : 10.3171/2020.11.SPINE201313
Volume 35: Issue 4, page: 471–485
In double and triple major adolescent idiopathic scoliosis curves it is still controversial whether the lowest instrumented vertebra (LIV) should be L3 or L4. Too short a fusion can impede postoperative distal curve compensation and promote adding on (AON). Longer fusions lower the chance of compensation by alignment changes of the lumbosacral curve (LSC). This study sought to improve prediction accuracy for AON and surgical outcomes in Lenke type 3, 4, and 6 curves.
Contribution of postoperative vertebral remodeling to reversal of vertebral wedging and prevention of correction loss in patients with adolescent Scheuermann’s kyphosis
Sinian Wang MD1, Liang Xu MD1, Muyi Wang MD1, Yong Qiu MD1, Zezhang Zhu MD1, Bin Wang MD1, and Xu Sun MD1
doi : 10.3171/2021.1.SPINE202086
Volume 35: Issue 4, page: 486–494
This study aimed to investigate reversal of vertebral wedging and to evaluate the contribution of vertebral remodeling to correction maintenance in patients with adolescent Scheuermann’s kyphosis (SK) after posterior-only instrumented correction.
Importance of achieving Scoliosis Research Society–22r minimal clinically important difference for improving patient satisfaction after adult spinal deformity surgery
Hideyuki Arima MD, PhD1, Tomohiko Hasegawa MD, PhD1, Yu Yamato MD, PhD1,2, Go Yoshida MD, PhD1, Tomohiro Banno MD, PhD1, Shin Oe MD, PhD1,2, Yuki Mihara MD, PhD1, Hiroki Ushirozako MD, PhD1, Tomohiro Yamada MD1, Yuh Watanabe MD1, Koichiro Ide MD1, Keiichi Nakai MD1, Kenta Kurosu MD1, and Yukihiro Matsuyama MD, PhD1
doi : 10.3171/2021.1.SPINE201855
Volume 35: Issue 4, page: 495–503
Achievement of minimal clinically important differences (MCIDs) in the Scoliosis Research Society–22r (SRS-22r) subdomains represents surgical efficacy. However, whether achievements of MCIDs in SRS-22r domains are associated with long-term satisfaction in patients with adult spinal deformity (ASD) is unclear. This study aimed to elucidate factors affecting patient satisfaction after thoracopelvic corrective fusion surgery in patients with ASD.
Reduced occurrence of primary rod fracture after adult spinal deformity surgery with accessory supplemental rods: retrospective analysis of 114 patients with minimum 2-year follow-up
Emily P. Rabinovich MS1, Thomas J. Buell MD1, Tony R. Wang MD1, Christopher I. Shaffrey MD2,3, and Justin S. Smith MD, PhD1
doi : 10.3171/2020.12.SPINE201527
Volume 35: Issue 4, page: 504–515
Rod fracture (RF) after adult spinal deformity (ASD) surgery is reported in approximately 6.8%–33% of patients and is associated with loss of deformity correction and higher reoperation rates. The authors’ objective was to determine the effect of accessory supplemental rod (ASR) placement on postoperative occurrence of primary RF after ASD surgery.
The surgical challenge of ossified ventrolateral spinal meningiomas: tricks and pearls for managing large ossified meningiomas of the thoracic spine
Jitendra Thakur MS1, Christian T. Ulrich MD1, Ralph T. Schär MD1, Kathleen Seidel MD1, Andreas Raabe MD1, and C. Marvin Jesse MD1
doi : 10.3171/2020.12.SPINE201526
Volume 35: Issue 4, page: 516–526
The authors present an illustrative technical note on microsurgical resection of ventrolateral completely ossified spinal meningiomas (OSMs) and a literature review of the surgical management of calcified spinal meningiomas or OSMs. These tumors are surgically demanding due to their solid consistency, especially when in a ventrolateral location with dislocation of the spinal cord. A challenging case with significant thoracic cord compression and displacement is described. Due to the firm consistency and the ventrolateral localization of the meningioma, a piecemeal resection was necessary. This could have resulted in a free-floating tumor remnant adherent to the spinal cord, impeding safe tumor resection. To avoid such a remnant, an anchoring burr hole was drilled at the border between the spinal cord and the adamantine tumor mass. Then, a microdissector was placed within the anchoring burr hole and the tumor was gently pulled laterally while drilling away the medial parts of the ossified tumor. This procedure was repeated until separation of the tumor from the spinal cord was possible and a gross-total resection (Simpson grade II) was manageable. Throughout the procedure, continuous intraoperative neurophysiological monitoring was performed.
Are spine metastasis survival scoring systems outdated and do they underestimate life expectancy? Caution in surgical recommendation guidance
Gaston Tabourel MD1,2, Louis-Marie Terrier MD1, Arnaud Dubory MD, PhD3, Joseph Cristini MD2, Louis-Romée Le Nail MD4, Ann-Rose Cook MD1, Kévin Buffenoir MD, PhD2, Hugues Pascal-Moussellard MD, PhD5, Alexandre Carpentier MD, PhD6, Bertrand Mathon MD6, and Aymeric Amelot MD, PhD1
doi : 10.3171/2020.12.SPINE201741
Volume 35: Issue 4, page: 527–534
Survival scoring systems for spine metastasis (SPM) were designed to help surgical practice. The authors sought to validate the prognostic accuracy of the main preoperative scoring systems for SPM.
Syrinx shunts for syringomyelia: a systematic review and meta-analysis of syringosubarachnoid, syringoperitoneal, and syringopleural shunting
Robert J. Rothrock MD1, Victor M. Lu MD, PhD1, and Allan D. Levi MD, PhD1
doi : 10.3171/2020.12.SPINE201826
Volume 35: Issue 4, page: 535–545
Syringomyelia is a debilitating, progressive disease process that can lead to loss of neurological function in patients already experiencing significant compromise. Syringosubarachnoid, syringoperitoneal, and syringopleural shunts are accepted treatment options for patients with persistent syringomyelia, but direct comparisons have been lacking to date. The authors conducted a systematic review of the literature and meta-analysis to compare clinical outcomes between these three syrinx shunt modalities.
Letter to the Editor. Risk factors for stand-alone L5–S1 anterior lumbar interbody fusion
Long Zhao MD1, Tianhang Xie MD1, and Jiancheng Zeng PhD, MD1
doi : 10.3171/2021.4.SPINE21567
Volume 35: Issue 4, page: 546
