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https://www.readbyqxmd.com/read/28229033/an-innovative-use-of-cortoss-bone-cement-to-stabilize-a-nonunion-after-interbody-fusion
#1
Michelle Granville, Robert E Jacobson
A 65-year-old male originally had surgery for spondylolisthesis at L5-S1 in 2008 and then went on to have an L4-5 transforaminal lumbar interbody fusion (TLIF) with pedicle screw fixation from L4 to S1 and interbody graft in 2010. Despite having two surgical procedures, he continued with intractable back pain and was told he had a failed lumbar fusion. When he was evaluated with a computerized tomography (CT) scan from April 2015, it demonstrated an erosive nonunion of the L4-5 interbody fusion without incorporation of the polyetheretherketone (PEEK) cage...
January 20, 2017: Curēus
https://www.readbyqxmd.com/read/28228880/crossed-nonfused-renal-ectopia-with-variant-blood-vessels-a-rare-congenital-renal-anomaly
#2
Nawal Ebrahim Al-Hamar, Khalid Khan
Crossed renal ectopia is a rare congenital anomaly, where one of the kidneys crosses the midline and lies opposite to the site of its normal ureteral insertion. Ninety percent of crossed ectopic kidneys are fused to their ipsilateral uncrossed kidney. Crossed renal ectopia without fusion is rare. We present the case of a 53-year-old male with an unusual incidental finding of crossed nonfused renal ectopia, with the left ectopic kidney lying anterior to the right kidney without fusion. The ectopic kidney had dual arterial supply: one from the aorta and another from the right renal artery...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28226581/automatic-lumbar-vertebrae-detection-based-on-feature-fusion-deep-learning-for-partial-occluded-c-arm-x-ray-images
#3
Yang Li, Wei Liang, Yinlong Zhang, Haibo An, Jindong Tan, Yang Li, Wei Liang, Yinlong Zhang, Haibo An, Jindong Tan, Yang Li, Wei Liang, Jindong Tan, Yinlong Zhang, Haibo An
Automatic and accurate lumbar vertebrae detection is an essential step of image-guided minimally invasive spine surgery (IG-MISS). However, traditional methods still require human intervention due to the similarity of vertebrae, abnormal pathological conditions and uncertain imaging angle. In this paper, we present a novel convolutional neural network (CNN) model to automatically detect lumbar vertebrae for C-arm X-ray images. Training data is augmented by DRR and automatic segmentation of ROI is able to reduce the computational complexity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225365/magnitude-location-and-factors-related-to-regional-and-global-sagittal-alignment-change-in-long-adult-deformity-constructs-report-of-183-patients-with-2-year-follow-up
#4
Alexander A Theologis, Michael Safaee, Justin K Scheer, Virginie Lafage, Rick Hostin, Robert A Hart, Eric O Klineberg, Themistocles S Protopsaltis, Vedat Deviren, Douglas C Burton, Daniel M Sciubba, Khaled Kebaish, Shay Bess, Christopher I Shaffrey, Frank Schwab, Justin S Smith, Christopher P Ames
STUDY DESIGN: This is a retrospective review of a prospective multicenter adult spinal deformity (ASD) database. OBJECTIVE: To quantify the location and magnitude of sagittal alignment changes within instrumented and noninstrumented spinal segments and to investigate the factors associated with these changes after surgery for ASD. SUMMARY OF BACKGROUND DATA: Spinal realignment is one of the major goals in ASD surgery and changes in the alignment are common following surgical correction...
February 20, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28221177/semirigid-waved-rod-system-for-the-treatment-of-the-degenerative-lumbar-diseases
#5
Lei Wang, Dasheng Lin, Weitao Zou, Hui Liu, Kejian Lian
BACKGROUND: The semirigid pedicle screw instrumentation has gained wide popularity in recent decennium in lumbar fusion surgery. However, few data were documented to compare the clinical efficacy between semirigid and traditional rigid pedicle screw systems. MATERIALS AND METHODS: A total of 96 patients with degenerative lumbar diseases were selected to perform operations between 2008 and 2013. The patients were prospectively randomized into 2 groups: 50 patients were managed by semirigid waved rod systems and 46 patients were intervened by traditional rigid straight stiff rod systems...
February 17, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28219364/the-relationship-between-changes-of-cervical-sagittal-alignment-after-anterior-cervical-discectomy-and-fusion-and-spino-pelvic-sagittal-alignment-under-roussouly-classification-a-four-year-follow-up-study
#6
Dong-Ning Huang, Miao Yu, Nan-Fang Xu, Mai Li, Shao-Bo Wang, Yu Sun, Liang Jiang, Feng Wei, Xiao-Guang Liu, Zhong-Jun Liu
BACKGROUND: Anterior cervical discectomy and fusion (ACDF) is widely used in the treatment of cervical degenerative disease; however, the variation of cervical sagittal alignment changes after ACDF has been rarely explored. The purpose of this study is to determine the relationship between changes of cervical sagittal alignment after ACDF and spino-pelvic sagittal alignment under Roussouly classification. METHODS: A cohort of 133 Chinese cervical spondylotic patients who received ACDF from 2011 to 2012 was recruited...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28219354/relationship-between-facet-tropism-and-facet-joint-degeneration-in-the-sub-axial-cervical-spine
#7
Xin Rong, Ziyang Liu, Beiyu Wang, Xuelin Pan, Hao Liu
BACKGROUND: Facet tropism is the angular asymmetry between the left and right facet joint orientation. Although debatable, facet tropism was suggested to be associated with disc degeneration, facet degeneration and degenerative spondylolisthesis in the lumbar spine. The purpose of this study was to explore the relationship between facet tropism and facet degeneration in the sub-axial cervical spine. METHODS: A total of 200 patients with cervical spondylosis were retrospectively analyzed...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28219305/biomechanical-comparison-between-cortical-screw-rod-construct-versus-pedicle-screw-rod-construct-in-transforaminal-lumbar-interbody-fusion
#8
Chris Chan Yin Wei, Sem Sei Haw, Elrofai Suliman Bashir, Saw Lim Beng, Rukmanikanthan Shanmugam, Kwan Mun Keong
OBJECTIVE: To compare construct stiffness of cortical screw (CS)-rod transforaminal lumbar interbody fusion (TLIF) construct (G2) versus pedicle screw (PS)-rod TLIF construct (G1) in the standardized porcine lumbar spine. METHODS: Six porcine lumbar spines (L2-L5) were separated into 12 functional spine units. Bilateral total facetectomies and interlaminar decompression were performed for all specimens. Non-destructive loading to assess stiffness in lateral bending, flexion and extension as well as axial rotation was performed using a universal material testing machine...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28217388/neurosurgery-concepts-key-perspectives-on-imaging-characteristics-of-spinal-metastases-surgery-for-low-back-pain-anesthesia-for-disc-surgery-and-laminectomy-versus-laminectomy-and-fusion-for-lumbar-spondylolisthesis
#9
Carlito Lagman, Lawrance K Chung, Luke Macyszyn, Winward Choy, Zachary A Smith, Nader S Dahdaleh, Angela M Bohnen, Jin M Cho, Chaim B Colen, Edward Duckworth, Anand V Germanwala, Peter Kan, Alexander A Khalessi, Chae-Yong Kim, Sandi Lam, Gordon Li, Michael Lim, Jonathan H Sherman, Vincent Y Wang, Gabriel Zada, Isaac Yang
No abstract text is available yet for this article.
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28217384/decreasing-hospital-length-of-stay-following-lumbar-fusion-utilizing-multidisciplinary-committee-meetings-involving-surgeons-and-other-caretakers
#10
Lisa B E Shields, Lisa Clark, Steven D Glassman, Christopher B Shields
BACKGROUND: Although hospital length of stay (LOS) following lumbar fusion has decreased for a variety of reasons, different institutions find their LOS over the benchmarks published by the national Agency for Healthcare Research and Quality (AHRQ). Over a 3-year period, this prospective study introduced utilization of multidisciplinary committee meetings between surgeons and other caretakers to decrease LOS following spinal fusion surgery without compromising the quality of care. METHODS: A multidisciplinary committee was established to assess factors and institute recommendations that influence hospital LOS following lumbar fusion compared to the national compared to the national AHRQ benchmark at baseline and at 1 and 2 years after adjusting our standard practice...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28216750/early-results-of-thoraco-lumbar-burst-fracture-treatment-using-selective-corpectomy-and-rectangular-cage-reconstruction
#11
Bowei Liang, Guofeng Huang, Luobing Ding, Liangqi Kang, Mo Sha, Zhenqi Ding
BACKGROUND: Subsidence and late fusion are commonly observed in anterior subtotal corpectomy and reconstruction for treating thoracolumbar burst fractures. The subsidence rate of this surgical method was reported from 19.6% to 75% in the literatures, which would cause treatment failure. Thus, an improvement of anterior surgery technique should be studied to reduce these complications. MATERIALS AND METHODS: 130 patients of thoracolumbar burst fractures treated by minimal corpectomy, decompression and U cage, between January 2009 and December 2010 were included in this study...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28216210/prevention-of-proximal-junctional-kyphosis-are-polyaxial-pedicle-screws-superior-to-monoaxial-pedicle-screws-at-the-upper-instrumented-vertebrae
#12
Hui Wang, Wenyuan Ding, Lei Ma, Lijun Zhang, Dalong Yang
INTRODUCTION: Evidence regarding whether the polyaxial pedicle screws at the upper instrumented vertebrae (UIV) are superior to monoaxial pedicle screws in prevention of proximal junctional kyphosis (PJK) is less clear. The aim of this study was therefore to explore the influence of different type of pedicle screws at UIV on the incidence of PJK. METHODS: 242 patients surgically treated with instrumented segmental posterior spinal fusion at a minimum 4 motion segments were reviewed retrospectively...
February 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28215460/early-experience-with-lateral-lumbar-total-disc-replacement-utility-complications-and-revision-strategies
#13
Gregory M Malham, Rhiannon M Parker
Lumbar total disc replacement (TDR) is an alternative to interbody fusion for the treatment of symptomatic degenerative disc disease. Traditionally, lumbar TDR is performed via an anterior retroperitoneal approach with regional risks of vascular and visceral injury. The direct lateral retroperitoneal, transpsoas approach avoids mobilisation of the great vessels and preserves the anterior longitudinal ligament, thereby maintaining physiological limits on motion. This study aimed to (i) report one site's early experience with lateral lumbar TDR and (ii) provide case examples illustrating the utility, complications and revision strategies of the XL-TDR device...
February 16, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28213694/erratum-to-first-clinical-results-of-minimally-invasive-vector-lumbar-interbody-fusion-mis-vlif-in-spondylodiscitis-and-concomitant-osteoporosis-a-technical-note
#14
Bernhard Rieger, Hongzhen Jiang, Daniel Ruess, Clemens Reinshagen, Marek Molcanyi, Jozef Zivcak, Huaiyu Tong, Gabriele Schackert
No abstract text is available yet for this article.
February 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28207762/minimally-invasive-procedure-reduces-adjacent-segment-degeneration-and-disease-new-benefit-based-global-meta-analysis
#15
Xiao-Chuan Li, Chun-Ming Huang, Cheng-Fan Zhong, Rong-Wei Liang, Shao-Jian Luo
OBJECTIVE: Adjacent segment pathology (ASP) is a common complication presenting in patients with axial pain and dysfunction, requiring treatment or follow-up surgery. However, whether minimally invasive surgery (MIS), including MIS transforaminal / posterior lumbar interbody fusion (MIS-TLIF/PLIF) decreases the incidence rate of ASP remains unknown. The aim of this meta-analysis was to compare the incidence rate of ASP in patients undergoing MIS versus open procedures. METHODS: This systematic review was undertaken by following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statement...
2017: PloS One
https://www.readbyqxmd.com/read/28207670/feasibility-study-of-utilization-of-action-camera-gopro-hero-4-google-glass-and-panasonic-hx-a100-in-spine-surgery
#16
Chang Kyu Lee, Youngjun Kim, Nam Lee, Byeongwoo Kim, Doyoung Kim, Seong Yi
STUDY DESIGN: Study for feasibility of commercially available action cameras in recording video of spine. OBJECTIVE: Recent innovation of the wearable action camera with high-definition video recording enables surgeons to use camera in the operation at ease without high costs. The purpose of this study is to compare the feasibility, safety, and efficacy of commercially available action cameras in recording video of spine surgery. SUMMARY OF BACKGROUND DATA: There are early reports of medical professionals using Google Glass throughout the hospital, Panasonic HX-A100 action camera, and GoPro...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207663/role-of-ethnicity-in-alignment-compensation-propensity-matched-analysis-of-differential-compensatory-mechanism-recruitment-patterns-for-sagittal-malalignment-in-288-asd-patients-from-japan-korea-and-united-states
#17
Bassel G Diebo, Isaac Gammal, Yoon Ha, Seung Hwan Yoon, Jae Won Chang, Byeongwoo Kim, Morio Matsumoto, Yu Yamato, Daisaku Takeuchi, Naobumi Hosogane, Mitsuru Yagi, Hiroshi Taneichi, Frank Schwab, Virginie Lafage, Christopher Ames
STUDY DESIGN: Retrospective review of adult spinal deformity patients in a multiethnic database. OBJECTIVE: To investigate the role of ethnicity on recruitment of compensatory mechanisms for sagittal spinal deformity. SUMMARY OF BACKGROUND DATA: While the impacts of age, sex, and pelvic morphology on the ability to compensate for sagittal malalignment have been investigated, the role of ethnicity in compensatory mechanism recruitment is poorly understood...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207660/predictors-of-distal-adding-on-in-thoracic-major-curves-with-ar-lumbar-modifiers
#18
Joshua S Murphy, Vidyadhar V Upasani, Burt Yaszay, Tracey P Bastrom, Carrie E Bartley, Amer Samdani, Lawrence G Lenke, Peter O Newton
STUDY DESIGN: Retrospective review of prospectively collected data. OBJECTIVE: To determine whether the last substantially touched vertebra (LSTV) is a valid lowest instrumented vertebra (LIV) for both Lenke 1 and 2 curve patterns with AR lumbar modifiers, and to identify preoperative risk factors of distal adding-on. SUMMARY OF BACKGROUND DATA: Previous studies have recommended selecting the LSTV as the LIV for Lenke 1AR curves (main thoracic curve with A lumbar modifier and L4 tilt to the right (thoracic overhang/King type IV curve)...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207655/internally-randomized-control-trial-of-radiation-exposure-using-ultra-low-radiation-imaging-versus-traditional-c-arm-fluoroscopy-for-patients-undergoing-single-level-minimally-invasive-transforaminal-lumbar-interbody-fusion
#19
Timothy Y Wang, S Harrison Farber, Scott S Perkins, Adam G Back, Sarah A Byrd, Debbie Chi, David Vincent, Isaac O Karikari
STUDY DESIGN: Randomized controlled trial. OBJECTIVE: To compare radiation exposure between ultra-low radiation imaging (ULRI) with image enhancement and standard-dose fluoroscopy for patients undergoing minimally invasive transforaminal lumbar interbody fusion (MIS TLIF). SUMMARY OF BACKGROUND DATA: Although the benefits of MIS are lauded by many, there is a significant amount of radiation exposure to surgeon and operating room personnel...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207623/feasibility-of-percutaneous-posterolateral-spinal-fusion-with-recombinant-bone-morphogenetic-protein-2-rhbmp-2-a-comparison-with-standard-methods-using-an-animal-model-study
#20
Chris Yin Wei Chan, Mun Keong Kwan, Lim Beng Saw, Hussin Paisal
BACKGROUND CONTEXT: The clinical application of recombinant bone morphogenetic protein in spinal surgery has been shown to be safe and effective. However, its use in minimally invasive spine surgery has been limited to anterior interbody fusion procedures. To date, no study has evaluated the feasibility of percutaneous posterolateral fusion in the spine utilizing recombinant bone morphogenetic protein-2 (rhBMP-2). PURPOSE: To evaluate the feasibility of percutaneous posterolateral fusion in the spine utilizing rhBMP-2...
March 2017: Clinical Spine Surgery
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