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Posterior spinal fusion

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https://www.readbyqxmd.com/read/28334320/interbody-spacer-material-properties-and-design-conformity-for-reducing-subsidence-during-lumbar-interbody-fusion
#1
Lillian S Chatham, Vikas V Patel, Christopher M Yakacki, R Dana Carpenter
One major complication with lumbar spinal fusion surgery is subsidence, in which the interbody spacer penetrates the vertebral endplates. Towards reducing the risk of subsidence, the objective of this study was to investigate the effects of interbody spacer material and design on the stress in the lumbar spine after interbody fusion. A finite element model of the L4-L5 motion segment was developed from computed tomography images of a cadaveric lumbar spine. A spacer, pedicle screws, and posterior rods were incorporated into the model, and the system was loaded under axial compression...
March 23, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28328590/air-embolism-during-posterior-spinal-fusion-in-a-10-year-old-girl-a-case-report
#2
Paul F Lee-Archer, Brett Chaseling
Venous air embolism is a rare but recognized complication of posterior spinal fusion surgery and epidural placement using a loss of resistance to air technique. We report a case of a probable venous air embolism causing cardiac arrest in a 10-year-old girl undergoing posterior spinal fusion in the prone position. The most likely source of the embolism was injection of air into the epidural space from a loss of resistance to air technique. This case also demonstrates the potential for paradoxical cerebral embolism in the absence of an intracardiac defect...
March 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28327915/vascularized-fibular-strut-autografts-in-spinal-reconstruction-after-resection-of-vertebral-chordoma-or-chondrosarcoma-a-retrospective-series
#3
Vijay Yanamadala, Peter A Rozman, Jay I Kumar, Joseph H Schwab, Sang-Gil Lee, Francis J Hornicek, William T Curry
BACKGROUND: Margin-free en bloc resection is the best medical practice for primary vertebral chordoma and chondrosarcoma. Spinal reconstruction following total spondylectomy requires reconstructive interbody graft (allograft, devascularized autograft, vascularized autograft, or cage constructs) and instrumentation. An important consideration when choosing grafts and instrumentation is the durability and the long-term success of the fusion without subsidence. OBJECTIVE: To evaluate the potential use of vascularized fibular autograft as a reconstructive strategy after en bloc resection...
January 13, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28325699/spinal-correction-in-patients-with-fukuyama-congenital-muscular-dystrophy
#4
Wataru Saito, Takanori Namba, Gen Inoue, Takayuki Imura, Masayuki Miyagi, Toshiyuki Nakazawa, Eiki Shirasawa, Kentaro Uchida, Masashi Takaso
BACKGROUND: Fukuyama congenital muscular dystrophy (FCMD) is one of the most common congenital progressive muscular dystrophies in Japan. Some patients develop a severe spinal deformity that leads to an unstable sitting position or pain. Since 2008, we have treated FCMD using posterior spinal fusion. This study reports the short-term clinical and radiographic results of posterior spinal correction and fusion in FCMD. METHODS: We retrospectively reviewed 11 consecutive FCMD patients, average age 13 years old, treated with posterior spinal instrumentation and fusion between 2008 and 2015...
March 18, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28324202/the-influence-of-surgical-approach-on-postoperative-pelvic-tilt-after-total-hip-arthroplasty
#5
Daisuke Inoue, Tamon Kabata, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Takashi Yamamoto, Tomoharu Takagi, Takaaki Ohmori, Hiroyuki Tsuchiya
BACKGROUND: Past reports have shown the tendency of posterior pelvic tilt to increase over time after total hip arthroplasty (THA). We have hypothesized that the volume and extent of released joint capsule may influence the change in postoperative pelvic tilt. This study was conducted to ascertain whether surgical approach during THA (posterior or anterior) has an effect on postoperative changes in pelvic tilt. METHODS: We conducted a retrospective review of 81 hips in 60 patients...
March 21, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28323238/preoperative-retrolisthesis-as-a-predictive-risk-factor-of-reoperation-due-to-delayed-onset-symptomatic-foraminal-stenosis-after-central-decompression-for-lumbar-canal-stenosis-without-fusion
#6
Daisuke Ikegami, Noboru Hosono, Yoshihiro Mukai, Kosuke Tateishi, Takeshi Fuji
BACKGROUND CONTEXT: For patients diagnosed with lumbar central canal stenosis with asymptomatic foraminal stenosis (FS), surgeons occasionally only decompress central stenosis and preserve asymptomatic FS. These surgeries have the potential risk of converting preoperative asymptomatic FS into symptomatic FS postoperatively by accelerating spinal degeneration, which requires reoperation. However, little is known about delayed onset symptomatic FS postoperatively. PURPOSE: This study aimed to evaluate the rate of reoperation for delayed onset symptomatic FS after lumbar central canal decompression in patients with preoperative asymptomatic FS, and determine the predictive risk factors of those reoperations...
March 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28321954/anaphylactic-reaction-to-tranexamic-acid-in-an-adolescent-undergoing-posterior-spinal-fusion
#7
Jennifer Chiem, Iskra Ivanova, Andrew Parker, Walter Krengel, Nathalia Jimenez
Tranexamic acid is an anti-fibrinolytic agent frequently used in pediatric surgery. Common side effects include nausea, flushing, and headache, but in rare instances, it may produce anaphylaxis; with only one previously reported case in a 72-year-old man. We report a case of a delayed anaphylactic reaction in a pediatric patient undergoing posterior spine fusion; and discuss the intraoperative management of the acute event, immunologic confirmation, and subsequent anesthetic approach.
March 21, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28321567/adjacent-segment-pathology-natural-history-or-effect-of-anterior-cervical-discectomy-and-fusion-a-10-year-follow-up-radiological-multicenter-study-using-an-evaluation-scale-of-the-ageing-spine
#8
Alessandro Pesce, Venceslao Wierzbicki, Emanuele Piccione, Alessandro Frati, Antonino Raco, Riccardo Caruso
PURPOSE: Aim of this study is to compare late degenerative MRI changes in a subset of patients operated on with ACDF to a second subset of patients presenting indication to ACDF but never operated on. METHODS: Patients from both subgroups received surgical indication according to the same criteria. Both subgroups underwent a cervical spine MRI in 2004-2005 and 10 years later in 2015. These MRI scans were retrospectively evaluated with a cervical spine ageing scale...
March 20, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28320256/internal-decompression-for-spinal-stenosis-idss-for-decompression-and-use-of-interlaminar-dynamic-device-coflextm-for-stabilization-in-the-surgical-management-of-degenerative-lumbar-canal-stenosis-with-or-without-mild-segmental-instability-our-initial-results
#9
Sumeet G Pawar, Arjun Dhar, Apurva Prasad, Satyashiva Munjal, P S Ramani
INTRODUCTION: Internal decompression of spinal stenosis (IDSS) and Posterior dynamic stabilization (PDS) form a bridge between decompression laminectomy alone and rigid fusion, by attempting to sustain beneficial effects of decompression and stabilization in an attempt to prevent bad effects of relentless degeneration. OBJECTIVE: To evaluate the clinical outcome in operated patient of posterior dynamic stabilization. DESIGN: Data were collected over 1 year in prospective, nonrandomized follow-up study using outcome scales...
March 21, 2017: Neurological Research
https://www.readbyqxmd.com/read/28319468/the-impact-of-cage-dimensions-positioning-and-side-of-approach-in-extreme-lateral-interbody-fusion
#10
Marjan Alimi, Gernot Lang, Rodrigo Navarro-Ramirez, Moritz Perrech, Connor Berlin, Christoph P Hofstetter, Yu Moriguchi, Eric Elowitz, Roger Härtl
STUDY DESIGN: This is a retrospective single-center study. OBJECTIVE: The aim of the study was to evaluate the impact of cage characteristics and position toward clinical and radiographic outcome measures in patients undergoing extreme lateral interbody fusion (ELIF). SUMMARY OF BACKGROUND DATA: ELIF is utilized for indirect decompression and minimally invasive surgical treatment for various degenerative spinal disorders. However, evidence regarding the influence of cage characteristics in patient outcome is minimal...
March 17, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28318781/spinal-fusion-in-a-patient-with-fukuyama-congenital-muscular-dystrophy
#11
Kaori Hino, Mitsumasa Fukuda, Tadao Morino, Tadanori Ogata, Masanori Ito, Eiichi Ishii
Many studies have evaluated surgical treatments for spinal deformities in patients with neuromuscular disease. However, few reports have described patients with Fukuyama congenital muscular dystrophy (FCMD). A 13-year-old boy with FCMD was unable to sit for long periods or sleep in the supine position because of progressive scoliosis. His Cobb angle worsened from 27° to 41° in 5months. He underwent standard posterior spinal fusion and pedicle-screw-alone fixation from T5 to S1. Postoperatively, his Cobb angle improved from 41° to 25° without exacerbation for 2years...
March 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28304240/posterior-arch-c-1-screw-technique-a-cadaveric-comparison-study
#12
Marc Moisi, Christian Fisahn, Lara Tkachenko, Shiveindra Jeyamohan, Stephen Reintjes, Peter Grunert, Daniel C Norvell, R Shane Tubbs, Jeni Page, David W Newell, Peter Nora, Rod J Oskouian, Jens Chapman
OBJECTIVE Posterior atlantoaxial stabilization and fusion using C-1 lateral mass screw fixation has become commonly used in the treatment of instability and for reconstructive indications since its introduction by Goel and Laheri in 1994 and modification by Harms in 2001. Placement of such lateral mass screws can be challenging because of the proximity to the spinal cord, vertebral artery, an extensive venous plexus, and the C-2 nerve root, which overlies the designated starting point on the posterior center of the lateral mass...
March 17, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28304239/immunoglobulin-g4-related-epidural-inflammatory-pseudotumor-presenting-with-pulmonary-complications-and-spinal-cord-compression-case-report
#13
Kavelin Rumalla, Kyle A Smith, Paul M Arnold
Immunoglobulin G4-related disease (IgG4-RD) is a recently defined condition characterized by inflammatory tumefactive lesions in various organ systems. IgG4-RD is a clinical and radiological diagnosis of exclusion and requires the presence of specific histopathological criteria for diagnosis. A 50-year-old man presented to an outside hospital with a 3-month history of progressively worsening back pain and symptoms of pleurisy, nasal crusting, and hematochezia. Radiological workup revealed an epidural-paraspinal mass with displacement of the spinal cord, destruction of the T5-6 vertebrae, and extension into the right lung...
March 17, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28296813/comparison-of-outcomes-between-c1-c2-screw-hook-fixation-and-c1-c2-screw-rod-fixation-for-treating-reducible-atlantoaxial-dislocation
#14
Bin Ni, Wenlong Zhao, Qunfeng Guo, Mei Zhang, Jinshui Chen, Xiang Guo, Xuhua Lu, Ning Xie
STUDY DESIGN: Retrospective comparative study OBJECTIVE.: To compare the outcomes of C1-C2 transarticular screw with C1 laminar hook (TAS+ C1H) fixation and C1 trans-arch lateral mass screw with C2 pedicle screw (C1TLMS+ C2PS) fixation in the treatment of reducible atlantoaxial dislocation(AAD). SUMMARY OF BACKGROUND DATA: TAS+ C1H is comparable to TAS with posterior wiring techniques and superior to C1 lateral mass screw combined with C2 pedicle screw (C1LMS+ C2PS) in biomechanics...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296737/incidence-influencing-factors-and-prognostic-impact-of-intraoperative-massive-blood-loss-in-adolescents-with-neuromuscular-scoliosis-a-strobe-compliant-retrospective-observational-analysis
#15
Rui Jia, Na Li, Bi-Yun Xu, Wei Zhang, Xiao-Ping Gu, Zheng-Liang Ma
Factors influencing massive blood loss for neuromuscular scoliosis (NMS) patients.Despite advances in surgical and anesthetic techniques, scoliosis surgery is still associated with intraoperative massive blood loss, which can result in postoperative mortality and morbidity. The aim of this study was to assess the incidence, influencing factors, and prognostic impact of intraoperative massive blood loss in adolescents with NMS.A retrospective review of adolescents who underwent posterior spinal instrumentation and fusion for NMS was performed...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28291411/the-impact-of-preoperative-epidural-injections-on-postoperative-infection-in-lumbar-fusion-surgery
#16
Anuj Singla, Scott Yang, Brian C Werner, Jourdan M Cancienne, Ali Nourbakhsh, Adam L Shimer, Hamid Hassanzadeh, Francis H Shen
OBJECTIVE Lumbar epidural steroid injections (LESIs) are performed for both diagnostic and therapeutic purposes for a variety of indications, including low-back pain, the leading cause of disability and expense due to work-related conditions in the US. The steroid agent used in epidural injections is reported to relieve nerve root inflammation, local ischemia, and resultant pain, but the injection may also have an adverse impact on spinal surgery performed thereafter. In particular, the possibility that preoperative epidural injections may increase the risk of surgical site infection after lumbar spinal fusion has been reported but has not been studied in detail...
March 14, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28291408/clinical-outcomes-following-spinal-fusion-using-an-intraoperative-computed-tomographic-3d-imaging-system
#17
Roy Xiao, Jacob A Miller, Navin C Sabharwal, Daniel Lubelski, Vincent J Alentado, Andrew T Healy, Thomas E Mroz, Edward C Benzel
OBJECTIVE Improvements in imaging technology have steadily advanced surgical approaches. Within the field of spine surgery, assistance from the O-arm Multidimensional Surgical Imaging System has been established to yield superior accuracy of pedicle screw insertion compared with freehand and fluoroscopic approaches. Despite this evidence, no studies have investigated the clinical relevance associated with increased accuracy. Accordingly, the objective of this study was to investigate the clinical outcomes following thoracolumbar spinal fusion associated with O-arm-assisted navigation...
March 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28291404/outcomes-and-effectiveness-of-posterior-occipitocervical-fusion-for-suboccipital-spinal-metastases
#18
Panya Luksanapruksa, Jacob M Buchowski, Neill M Wright, Frank H Valone, Colleen Peters, David B Bumpass
OBJECTIVE The incidence of suboccipital spinal metastases is rare but has increased given cancer patients' longer life expectancies. Operative treatment in this region is often challenging because of limited fixation points due to tumor lysis, as well as adjacent neural and vascular anatomy. Few studies have reported on this population of cancer patients. The purpose of this study was to evaluate clinical outcomes and complications of patients with suboccipital spinal metastases who had undergone posterior occipitocervical fixation...
February 24, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28291402/complication-rates-associated-with-3-column-osteotomy-in-82-adult-spinal-deformity-patients-retrospective-review-of-a-prospectively-collected-multicenter-consecutive-series-with-2-year-follow-up
#19
Justin S Smith, Christopher I Shaffrey, Eric Klineberg, Virginie Lafage, Frank Schwab, Renaud Lafage, Han Jo Kim, Richard Hostin, Gregory M Mundis, Munish Gupta, Barthelemy Liabaud, Justin K Scheer, Bassel G Diebo, Themistocles S Protopsaltis, Michael P Kelly, Vedat Deviren, Robert Hart, Doug Burton, Shay Bess, Christopher P Ames
OBJECTIVE Although 3-column osteotomy (3CO) can provide powerful alignment correction in adult spinal deformity (ASD), these procedures are complex and associated with high complication rates. The authors' objective was to assess complications associated with ASD surgery that included 3CO based on a prospectively collected multicenter database. METHODS This study is a retrospective review of a prospectively collected multicenter consecutive case registry. ASD patients treated with 3CO and eligible for 2-year follow-up were identified from a prospectively collected multicenter ASD database...
February 17, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28282990/validation-and-accuracy-of-intraoperative-ct-scan-using-the-philips-alluraxper-fd20-angiography-suite-for-assessment-of-spinal-instrumentation
#20
Edin Nevzati, Javier Fandino, Bawarjan Schatlo, Michel Heimberg, Serge Marbacher, Luca Remonda, Ali-Reza Fathi
BACKGROUND: With the concept of the hybrid operating room gaining popularity, the authors adapted a hybrid angiographic suite with intraoperative computed tomography (iCT) to evaluate accuracy of pedicle screw placement in spinal fusion. This retrospective review examines how well iCT detected extrapedicular screw violation, to then allow repositioning and potentially avoid revision surgery. METHODS: A total of 36 consecutive patients underwent pedicle screw placement in posterior cervical, thoracic, and lumbosacral spinal fusions...
March 10, 2017: British Journal of Neurosurgery
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