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Journal of Neurosurgery. Spine

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https://read.qxmd.com/read/30901757/machine-learning-for-automated-3-dimensional-segmentation-of-the-spine-and-suggested-placement-of-pedicle-screws-based-on-intraoperative-cone-beam-computer-tomography
#1
Gustav Burström, Christian Buerger, Jurgen Hoppenbrouwers, Rami Nachabe, Cristian Lorenz, Drazenko Babic, Robert Homan, John M Racadio, Michael Grass, Oscar Persson, Erik Edström, Adrian Elmi Terander
OBJECTIVEThe goal of this study was to develop and validate a system for automatic segmentation of the spine, pedicle identification, and screw path suggestion for use with an intraoperative 3D surgical navigation system.METHODSCone-beam CT (CBCT) images of the spines of 21 cadavers were obtained. An automated model-based approach was used for segmentation. Using machine learning methodology, the algorithm was trained and validated on the image data sets. For measuring accuracy, surface area errors of the automatic segmentation were compared to the manually outlined reference surface on CBCT...
March 22, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30901756/measurement-of-in-vivo-spinal-cord-displacement-and-strain-fields-of-healthy-and-myelopathic-cervical-spinal-cord
#2
Kirsten E Stoner, Kingsley O Abode-Iyamah, Vincent A Magnotta, Matthew A Howard, Nicole M Grosland
OBJECTIVECervical myelopathy (CM) is a common and debilitating form of spinal cord injury caused by chronic compression; however, little is known about the in vivo mechanics of the healthy spinal cord during motion and how these mechanics are altered in CM. The authors sought to measure 3D in vivo spinal cord displacement and strain fields from MR images obtained during physiological motion of healthy individuals and cervical myelopathic patients.METHODSNineteen study participants, 9 healthy controls and 10 CM patients, were enrolled in the study...
March 22, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30901755/postoperative-structured-rehabilitation-in-patients-undergoing-surgery-for-cervical-radiculopathy-a-2-year-follow-up-of-a-randomized-controlled-trial
#3
Anneli Peolsson, Håkan Löfgren, Åsa Dedering, Birgitta Öberg, Peter Zsigmond, Henrik Hedevik, Johanna Wibault
OBJECTIVEInformation about postoperative rehabilitation for cervical radiculopathy (CR) is scarce. The aim of this study was to investigate the additional benefits of structured postoperative rehabilitation (SPT), which was performed in all patients, compared with a pragmatic standard postoperative approach (SA), in which rehabilitation was used as needed and patients sought physiotherapy on their own without a referral, in patients with MRI evidence of disc herniation and concomitant clinical signs who underwent surgery for CR...
March 22, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30875684/braking-reaction-time-before-and-after-surgery-for-patients-with-recurrent-lumbar-disc-herniation
#4
Ricarda Lechner, David Putzer, Martin Krismer, Christian Haid, Alois Obwegeser, Martin Thaler
OBJECTIVEThe positive effect of primary lumbar disc surgery on braking reaction time (BRT) has already been shown. The authors investigated the effect of recurrent lumbar disc herniation surgery on BRT.METHODSTwenty-four patients (mean age 49.9 years) were investigated for BRT 1 day before surgery, postoperatively before hospital discharge, and 4 to 5 weeks after surgery. Thirty-one healthy subjects served as a control group.RESULTSSignificant improvement of BRT following surgery was found in all patients (p < 0...
March 15, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30875683/does-relocation-of-the-apex-after-osteotomy-affect-surgical-and-clinical-outcomes-in-patients-with-ankylosing-spondylitis-and-thoracolumbar-kyphosis
#5
Zhuo-Jie Liu, Bang-Ping Qian, Yong Qiu, Sai-Hu Mao, Jun Jiang, Bin Wang
OBJECTIVERelocation of the apex is often found in patients with ankylosing spondylitis (AS)-associated thoracolumbar/lumbar kyphosis after corrective surgery. This study evaluates the influence of different postoperative apex locations on surgical and clinical outcomes of osteotomy for patients with AS and thoracolumbar kyphosis.METHODSSixty-two patients with a mean age of 34.6 ± 9.7 years (range 17-59 years) and a minimum of 2 years of follow-up, who underwent 1-level lumbar pedicle subtraction osteotomy for AS-related thoracolumbar kyphosis, were enrolled in the study, as well as 62 age-matched healthy individuals...
March 15, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30849747/letter-to-the-editor-reappraising-role-of-clinical-evaluations-in-degenerative-lumbar-spine-pathologies
#6
LETTER
Sunil Munakomi
No abstract text is available yet for this article.
March 8, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30849746/cortical-bone-trajectory-screws-used-to-save-failed-traditional-trajectory-screws-in-the-osteoporotic-lumbar-spine-and-vice-versa-a-human-cadaveric-biomechanical-study
#7
Ren-Jie Zhang, Hui-Min Li, Hai Gao, Chong-Yu Jia, Tao Xing, Fu-Long Dong, Cai-Liang Shen
OBJECTIVETraditional trajectory (TT) screws are widely used in lumbar fixation. However, they may require revision surgery in some instances, especially in patients with osteoporotic spines. Cortical bone trajectory (CBT) screws may potentially be used to rescue a failed TT screw and vice versa in nonosteoporotic spines. This study aimed to investigate whether a CBT screw can salvage a compromised TT screw in osteoporotic lumbar spines and vice versa.METHODSA total of 42 vertebrae from 17 cadaveric lumbar spines were obtained...
March 8, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30849745/estimating-a-price-point-for-cost-benefit-of-bone-morphogenetic-protein-in-pseudarthrosis-prevention-for-adult-spinal-deformity-surgery
#8
Michael M Safaee, Cecilia L Dalle Ore, Corinna C Zygourakis, Vedat Deviren, Christopher P Ames
OBJECTIVEBone morphogenetic protein (BMP) is associated with reduced rates of pseudarthrosis and has the potential to decrease the need for revision surgery. There are limited data evaluating the cost-benefit of BMP for pseudarthrosis-related prevention surgery in adult spinal deformity.METHODSThe authors performed a single-center retrospective review of 200 consecutive patients with adult spinal deformity. Demographic data and costs of BMP, primary surgery, and revision surgery for pseudarthrosis were collected...
March 8, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835713/positive-and-negative-work-events-attributed-to-the-spine-2-years-after-lumbar-surgery-among-patients-working-preoperatively
#9
Carol A Mancuso, Roland Duculan, Frank P Cammisa, Andrew A Sama, Alexander P Hughes, Federico P Girardi
OBJECTIVEReturn to work after lumbar surgery is not synonymous with effective job performance, and it is likely that patients who undergo spine surgery experience both positive and negative events attributable to their spine after returning to work. The authors' objectives were to measure work events attributable to the spine during the 2 years after lumbar surgery and to assess associated demographic and clinical characteristics.METHODSEmployed patients scheduled for lumbar surgery were interviewed preoperatively and reported work characteristics, including amount of improvement in job performance that they expected from surgery...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835712/urgent-surgery-for-spinal-instability-or-neurological-impairment-caused-by-spinal-brown-tumors-occurring-in-the-context-of-end-stage-renal-disease
#10
Qi Jia, Xin Gao, Zhenhua Zhou, Bin Lan, Jian Zhao, Tielong Liu, Xinghai Yang, Haifeng Wei, Jianru Xiao
OBJECTIVESpinal instability or neurological impairment caused by spinal brown tumors (BTs) with end-stage renal disease (ESRD) is an acute condition that needs urgent surgery. There is not much published information on BTs of the mobile spine given the rarity of the disease, and the literature shows inconsistent treatment options and ambiguous follow-up information. The aim of the present study was to elucidate the clinical features, anesthesia management, and surgical treatment for this rare disease through long-term follow-up observations...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835711/novel-approach-using-ultrasonic-bone-curettage-and-transoral-robotic-surgery-for-en-bloc-resection-of-cervical-spine-chordoma-case-report
#11
Dmitriy Petrov, Michael Spadola, Connor Berger, Gregory Glauser, Ahmad F Mahmoud, Bert O'Malley, Neil R Malhotra
Chordomas are rare, locally aggressive neoplasms that develop from remnants of the notochord. The typical approach to chordomas of the clivus and axial cervical spine often limits successful en bloc resection. In this case report, authors describe the first-documented transoral approach using both transoral robotic surgery (TORS) for exposure and the Sonopet bone scalpel under navigational guidance to achieve en bloc resection of a cervical chordoma. This 27-year-old man had no significant past medical history (Charlson Comorbidity Index 0)...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835710/sublaminar-banding-as-an-adjunct-to-pedicle-screw-rod-constructs-a-review-and-technical-note-on-novel-hybrid-constructs-in-spinal-deformity-surgery
#12
Vibhu K Viswanathan, Amy J Minnema, Stephanus Viljoen, H Francis Farhadi
Sublaminar implants that encircle cortical bone are well-established adjuncts to pedicle screw-rod constructs in pediatric deformity surgery. Sublaminar bands (SLBs) in particular carry the advantage of relatively greater bone contact surface area as compared to wires and pullout loads that are independent of bone mineral density, in contrast to pedicle screws. Whereas the relevant technical considerations have been reported for pediatric deformity correction, an understanding of the relative procedural specifics of these techniques is missing for adult spinal deformity (ASD), despite several case series that have used distinct posterior tethering techniques for proximal junctional kyphosis prevention...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835707/diagnostic-and-therapeutic-values-of-intraoperative-electrophysiological-neuromonitoring-during-resection-of-intradural-extramedullary-spinal-tumors-a-single-center-retrospective-cohort-and-meta-analysis
#13
Wataru Ishida, Joshua Casaos, Arun Chandra, Adam D'Sa, Seba Ramhmdani, Alexander Perdomo-Pantoja, Nicholas Theodore, George Jallo, Ziya L Gokaslan, Jean-Paul Wolinsky, Daniel M Sciubba, Ali Bydon, Timothy F Witham, Sheng-Fu L Lo
OBJECTIVEWith the advent of intraoperative electrophysiological neuromonitoring (IONM), surgical outcomes of various neurosurgical pathologies, such as brain tumors and spinal deformities, have improved. However, its diagnostic and therapeutic value in resecting intradural extramedullary (ID-EM) spinal tumors has not been well documented in the literature. The objective of this study was to summarize the clinical results of IONM in patients with ID-EM spinal tumors.METHODSA retrospective patient database review identified 103 patients with ID-EM spinal tumors who underwent tumor resection with IONM (motor evoked potentials, somatosensory evoked potentials, and free-running electromyography) from January 2010 to December 2015...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835706/sf-36-scores-predict-postoperative-delirium-after-surgery-for-cervical-spondylotic-myelopathy
#14
Kyohei Kin, Takao Yasuhara, Yousuke Tomita, Michiari Umakoshi, Jun Morimoto, Isao Date
OBJECTIVECervical spondylotic myelopathy (CSM) is one of the most common causes of spinal cord dysfunction. Surgery for CSM is generally effective, but postoperative delirium is a potential complication. Although there have been some studies that investigated postoperative delirium after spine surgery, no useful tool for identifying high-risk patients has been established, and it is unknown if 36-Item Short Form Health Survey (SF-36) scores can predict postoperative delirium. The objective of this study was to evaluate the correlation between preoperative SF-36 scores and postoperative delirium after surgery for CSM...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835703/sublaminar-polyester-bands-as-a-salvage-fixation-method-in-the-cervical-spine-novel-application-in-two-patients
#15
Luke G F Smith, Nguyen Hoang, Ammar Shaikhouni, Stephanus Viljoen
Pedicle and lateral mass screws are the most common means of rigid fixation in posterior cervical spine fusions. Various other techniques such as translaminar screw placement, paravertebral foramen screw fixation, sublaminar and spinous process wiring, cement augmentation, and others have been developed for primary fixation or as salvage methods. Use of these techniques can be limited by a prior history of osteotomies, poor bone density, destruction of the bone-screw interface, and unfavorable vascular and osseous anatomy...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835702/perioperative-outcomes-associated-with-thoracolumbar-3-column-osteotomies-for-adult-spinal-deformity-patients-with-rheumatoid-arthritis
#16
Cecilia L Dalle Ore, Christopher P Ames, Vedat Deviren, Darryl Lau
OBJECTIVESpinal deformity causing spinal imbalance is directly correlated to pain and disability. Prior studies suggest adult spinal deformity (ASD) patients with rheumatoid arthritis (RA) have more complex deformities and are at higher risk for complications. In this study the authors compared outcomes of ASD patients with RA following thoracolumbar 3-column osteotomies to outcomes of a matched control cohort.METHODSAll patients with RA who underwent 3-column osteotomy for thoracolumbar deformity correction performed by the senior author from 2006 to 2016 were identified retrospectively...
March 1, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30835714/erratum-laminectomy-alone-versus-fusion-for-grade-1-lumbar-spondylolisthesis-in-426-patients-from-the-prospective-quality-outcomes-database
#17
Andrew K Chan
No abstract text is available yet for this article.
February 22, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30797205/acute-progressive-adolescent-idiopathic-cervical-kyphosis-case-report
#18
Yuki Yamamuro, Satoru Demura, Hideki Murakami, Satoshi Kato, Noritaka Yonezawa, Noriaki Yokogawa, Hiroyuki Tsuchiya
Acute progressive adolescent idiopathic cervical kyphosis (AICK) is rare, and its treatment strategy is controversial. The authors present a case of AICK successfully treated with preoperative halo-gravity traction, followed by combined anterior-posterior surgery. A 15-year-old girl with no relevant past or family history presented with axial neck pain without any cause. A few months after the development of cervical myelopathy, cervical kyphosis progressed to 71° despite conservative treatment. CT scanning demonstrated osteophyte formation at the anterior aspect of the vertebral body...
February 22, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30797204/association-between-lumbar-sacralization-and-increased-degree-of-vertebral-slippage-and-disc-degeneration-in-patients-with-l4-spondylolysis
#19
Xinqiang Yao, Ruoting Ding, Junhao Liu, Siyuan Zhu, Jingshen Zhuang, Zhongyuan Liu, Hui Jiang, Dongbin Qu, Qingan Zhu, Jianting Chen
OBJECTIVEThe aim of this study was to evaluate the effect of lumbar sacralization on the level of vertebral slip and disc degeneration in patients with L4 spondylolysis.METHODSThe authors analyzed data from 102 cases in which patients underwent surgical treatment for L4 spondylolysis and spondylolisthesis at their institution between March 2007 and September 2016. Lumbar sacralization was characterized by the presence of pseudarthrosis and/or bony fusion between the L5 transverse process and sacrum, and the type of lumbosacral transitional vertebra (LSTV) was evaluated with the Castellvi classification...
February 22, 2019: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/30797203/astronaut-michael-collins-apollo-8-and-the-anterior-cervical-fusion-that-changed-the-history-of-human-spaceflight
#20
Richard Menger, Michael Wolf, Jai Deep Thakur, Anil Nanda, Anthony Martino
In 1961, President John F. Kennedy declared that the United States would send a man to the moon and safely bring him home before the end of the decade. Astronaut Michael Collins was one of those men. He flew to the moon on the historic flight of Apollo 11 while Neil Armstrong and Buzz Aldrin walked on its surface. However, this was not supposed to be the case.Astronaut Collins was scheduled to fly on Apollo 8. While training, in 1968, he started developing symptoms of cervical myelopathy. He underwent evaluation at Wilford Hall Air Force Hospital in San Antonio and was noted to have a C5-6 disc herniation and posterior osteophyte on myelography...
February 22, 2019: Journal of Neurosurgery. Spine
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