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https://www.readbyqxmd.com/read/28109098/-impact-of-anterior-cervical-fusion-surgeries-on-adjacent-segments-a-finite-element-analysis
#1
Teng Lu, Ting Zhang, Jun Dong, Quan-Jin Zang, Bao-Hui Yang, Dong Wang, Hao-Peng Li, Xi-Jng He
OBJECTIVE: To investigate the changes in the range of motion (ROM) and stress of the intervertebral disc and facet joint of the adjacent segments following anterior cervical corpectomy and fusion (ACCF) and anterior cervical discectomy and fusion (ACDF) using finite element analysis. METHODS: A three-dimensional finite element model of the lower cervical vertebrae was constructed and validated by comparing the ROM of the finite element model against the published data...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28108780/cement-augmented-screws-in-a-cervical-two-level-corpectomy-with-anterior-titanium-mesh-cage-reconstruction-a-biomechanical-study
#2
Sebastian Hartmann, Claudius Thomé, Anja Tschugg, Johannes Paesold, Pujan Kavakebi, Werner Schmölz
STUDY DESIGN: Biomechanical investigation. PURPOSE: Cervical two-level corpectomies with anterior-only instrumentation are associated with a high rate of implant-related complications. These procedures, therefore, often require an additional dorsal instrumentation to prevent screw loosening. Cement augmentation of the anterior screws in two-level corpectomies might stabilize the construct, so that a second dorsal procedure could be avoided. To evaluate the screw anchorage in cervical anterior-only procedures, an ex vivo evaluation of the range of motion (ROM) in two-level corpectomies (C4 and C5), with and without cement augmentation of the anterior screws, was carried out in this study...
January 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28104281/-results-to-4-year-follow-up-of-the-treatment-of-the-cervical-stenosis-by-corpectomy-titanium-mesh-cage-and-anterior-plate-fixation
#3
Alejandro Antonio Reyes Sánchez, Luis Alberto Gameros Castañeda, Claudia Obil Chavarría, Armando Alpizar Aguirre, Barón Zárate Kalfópulos, Luis Miguel Rosales-Olivares
BACKGROUND: Cervical spondylotic myelopathy is caused by cervical stenosis. Several techniques have been described for the treatment of multilevel disease, such as the anterior corpectomy with titanium mesh cage and anterior cervical plate placement, which has the advantage of performing a wider decompression and using the same bone as graft. However, it has caused controversy since the collapse of the mesh cage continues being a major limitation of this procedure. MATERIAL AND METHOD: A prospective 4-year follow-up study was conducted in 7 patients diagnosed with cervical stenosis, who were treated surgically by one level corpectomy with titanium mesh cage and anterior cervical plate placement, evaluating them by radiographs and clinical scales...
January 16, 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28095745/toward-the-definition-of-a-new-worst-case-paradigm-for-the-preclinical-evaluation-of-posterior-spine-stabilization-devices
#4
Luigi La Barbera, Tomaso Villa
Mechanical reliability tests on posterior spine stabilization devices are based on standard F1717 by the American Society for Testing and Materials, which describes how to assemble the implant with vertebrae-like test blocks in a corpectomy model. A recent study proposed to revise the standard to describe the anatomical worst-case scenario, instead of the average one currently implemented, and introduce the unsupported screw length as a mechanical parameter. This article investigates the implications of such revisions on the endurance properties of an implant already on the market...
January 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28089837/direct-midline-posterior-corpectomy-and-fusion-of-a-lumbar-burst-fracture-with-retrospondyloptosis-a-case-report
#5
Arthur Carminucci, Rachid Assina, R Nick Hernandez, Ira M Goldstein
BACKGROUND: Traumatic burst fractures of the lumbar spine can result in significant neurological injury and mechanical instability. The ideal surgical approach for the treatment of unstable lumbar spine burst fractures remains debatable. CASE DESCRIPTION: A 37 year-old male presented with severe neurological injury including loss of motor function below the level of the iliopsoas muscles bilaterally, saddle anesthesia, and absent rectal tone, following a fall from 60 ft...
January 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28073140/-clinical-and-radiological-results-after-anterior-cervical-corpectomy-with-cage-fusion-a-retrospective-comparison-of-peek-vs-titanium-cages
#6
Chris Schulz, Uwe Max Mauer, René Mathieu
Background Anterior cervical corpectomy and fusion (ACCF) has become a standard procedure for patients with spondylotic myelopathy due to multisegmental stenosis of the cervical canal. Beside the fusion technique using autogenous bone grafts, synthetic cages have been increasingly used in recent years. Published information on the clinical and radiological results of different cage materials for ACCF is still limited. The study presented here is the largest series to date reporting clinical and radiological outcomes and complication rates after one- to three-level ACCF using structural polyetheretherketone (PEEK) or titanium cages augmented by anterior plate-screw osteosynthesis...
January 10, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28068277/initial-experience-with-o-arm-navigated-spinal-surgery-report-on-two-cases
#7
Ivo I Kehayov, Christo B Zhelyazkov, Borislav M Kalnev, Atanas N Davarski, Borislav D Kitov, Stefan D Raykov
Image-guided spinal surgery is becoming increasingly popular because it allows surgeons to achieve minimal invasiveness and maximum precision in the performed procedures. We present our initial experience with two cases operated on using O-arm-based spinal navigation at the Clinic of Neurosurgery in St George University Hospital, Plovdiv, Bulgaria. In the first case, we performed removal of extradural spinal tumor of the sixth thoracic vertebra and O-arm-navigated pedicle screw fixation. In the second case, we performed O-arm-navigated corpectomy of the fifth cervical vertebra and anterior spinal reconstruction and fusion with titanium expandable mesh and cervical plate in connection with degenerative narrowing of the cervical spinal canal that lead to clinically manifested myelopathy...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28041330/quality-of-life-after-different-surgical-procedures-for-the-treatment-of-spinal-metastases-results-of-a-single-center-prospective-case-series
#8
Godard C W de Ruiter, Claudine O Nogarede, Jasper F C Wolfs, Mark P Arts
OBJECTIVE The performance of surgery for spinal metastases is rapidly increasing. Different surgical procedures, ranging from stabilization alone to stabilization combined with corpectomy, are thereby performed for various indications. Little is known about the impact of these different procedures on patient quality of life (QOL), but this factor is crucial when discussing the various therapeutic options with patients and their families. Thus, the authors of this study investigated the effect of various surgical procedures for spinal metastases on patient QOL...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/27997508/cost-variation-of-anterior-cervical-fusions-in-elderly-medicare-beneficiaries
#9
Varun Puvanesarajah, David J Kirby, Amit Jain, Brian C Werner, Hamid Hassanzadeh
STUDY DESIGN: Retrospective database review OBJECTIVE.: To determine how demographics and comorbid diagnoses influence hospital costs during admission for anterior cervical fusions (ACFs) in the elderly Medicare population. SUMMARY OF BACKGROUND DATA: Elective ACFs to treat degenerative cervical pathology are extremely common within the elderly population. Though it is well known that every patient has a significantly different medical profile that guides treatment and post-operative care, little information is available regarding how hospital costs vary from patient to patient...
December 16, 2016: Spine
https://www.readbyqxmd.com/read/27994773/biomechanical-analysis-of-a-pedicle-screw-rod-system-with-a-novel-cross-link-configuration
#10
Yasuhiro Nakajima, Masahito Hara, Daisuke Umebayashi, Shoichi Haimoto, Yu Yamamoto, Yusuke Nishimura, Toshihiko Wakabayashi
STUDY DESIGN: The strength effects of a pedicle screw-rod system supplemented with a novel cross-link configuration were biomechanically evaluated in porcine spines. PURPOSE: To assess the biomechanical differences between a conventional cross-link pedicle screw-rod system versus a novel cross-link instrumentation, and to determine the effect of the cross-links. OVERVIEW OF LITERATURE: Transverse cross-link systems affect torsional rigidity, but are thought to have little impact on the sagittal motion of spinal constructs...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27977040/anterior-cervical-corpectomy-and-fusion-using-a-synthetic-hydroxyapatite-graft-for-ossification-of-the-posterior-longitudinal-ligament
#11
Toshitaka Yoshii, Takashi Hirai, Kenichiro Sakai, Shinichi Sotome, Mitsuhiro Enomoto, Tsuyoshi Yamada, Hiroyuki Inose, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa
The significant complication rate associated with harvesting autologous iliac bone or fibula has encouraged development of alternative graft substitutes. In this study, the authors investigated the efficacy and safety of synthetic porous hydroxyapatite (HA) combined with local vertebral bone graft for use in anterior cervical corpectomy and fusion (ACCF) for the treatment of patients with ossification of the posterior longitudinal ligament (OPLL). Since 2006, twenty-five OPLL patients underwent ACCF using HA blocks (HA group)...
December 9, 2016: Orthopedics
https://www.readbyqxmd.com/read/27939974/revision-surgeries-following-artificial-disc-replacement-of-cervical-spine
#12
Jong-Beom Park, Han Chang, Jin S Yeom, Kyung-Soo Suk, Dong-Ho Lee, Jae Chul Lee
OBJECTIVE: We investigated causes and results of revision surgeries after artificial disc replacement of cervical spine (C-ADR). METHODS: Twenty-one patients (mean age: 52.8) who underwent revision surgery after C-ADR and who had a minimum 2-year of follow-up were included into this study. The mean time between the primary and revision surgeries was 21 months. During their primary surgeries, 14 patients underwent single level C-ADR, 2 two-level C-ADR, and 5 two-level hybrid surgery for 16 radiculopathy, 3 myelopathy, and 2 adjacent segment diseases...
December 8, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27930523/anterior-cervical-discectomy-and-fusion-versus-anterior-cervical-corpectomy-and-fusion-in-multilevel-cervical-spondylotic-myelopathy-a-meta-analysis
#13
Tao Wang, Hui Wang, Sen Liu, Huang-Da An, Huan Liu, Wen-Yuan Ding
BACKGROUND: Both anterior cervical discectomy and fusion (ACDF) and anterior cervical corpectomy and fusion (ACCF) are used to treat multilevel cervical spondylotic myelopathy (mCSM); however, which one is better treatment for mCSM remains considerable controversy. A meta-analysis was performed to compare clinical outcomes, radiographic outcomes, and surgical outcomes between ACDF and ACCF in treatment for mCSM. METHODS: An extensive search of literature was performed in Pubmed/MEDLINE, Embase, the Cochrane library, CNKI, and WANFANG databases on ACDF versus ACCF treatment for mCSM from January 2011 to August 2016...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27909657/remote-cervical-pseudomeningocele-following-anterior-cervical-corpectomy-and-fusion-report-of-a-case-and-review-of-the-literature
#14
Abolfazl Rahimizadeh, Housain Soufiani, Shaghayegh Rahimizadeh
Iatrogenic cervical pseudomeningocele is a rare event and majority are located posteriorly as a delayed complication of inadvertent dural tear after decompressive laminectomy. However, iatrogenic anterior cervical pseudomeningocele subsequent to discectomy or corpectomy is a rare pathology. The time necessary for formation of pseudomeningocele varies and depend on the width of the dural tear and the flow of cerebrospinal fluid leakage. Large tears with high CSF flow usually result in early collection of the cerebrospinal fluid in anterior compartment of the neck designated acute pseudomeningoceles...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27909651/hybrid-decompression-and-fixation-technique-for-the-treatment-of-multisegmental-cervical-spondylotic-myelopathy
#15
Barón Zárate-Kalfopulos, Walter Araos-Silva, Alejandro Reyes-Sánchez, Luis Miguel Rosales-Olivarez, Armando Alpizar-Aguirre, Francisco Lopez Melendez
BACKGROUND: Cervical spondilotic myelopathy (CSM) is defined as the compromise of the spinal cord due to degenerative changes of the cervical spine. It is the most common cause of spinal cord dysfunction in patients over 55 years. An early surgical management it is paramount to achieve better neurological outcome. There is still controversy regarding the appropriate surgical treatment for multisegmental CSM involving three or more levels. The hybrid decompression and fixation technique combines one or two level corpectomy and a single level discectomy in order to obtain optimum decompression and fixation in patients with multilevel cervical myelopathy...
2016: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/27890745/mini-open-thoracolumbar-corpectomy-perioperative-outcomes-and-hospital-cost-analysis-compared-to-open-corpectomy
#16
Olawale A R Sulaiman, Juanita Garces, Mansour Mathkour, Tyler Scullen, R Benson Jones, Teresa Arrington, Cuong J Bui
BACKGROUND: Standard open surgical management of thoracolumbar infection, trauma and tumor is associated with significant morbidity. Mini-open and less morbid surgical techniques are being introduced. Our objective is to compare perioperative and immediate post-operative morbidity of open and mini-open thoracolumbar corpectomy techniques including direct hospital costs. METHODS: We retrospectively reviewed the medical records of all patients who underwent open or mini-open corpectomy along with their demographics (age, sex, body mass index (BMI), primary diagnosis), operative data (length of surgery, EBL, blood transfusion-BT), surgical level, pre- and post-operative neurologic status (using ASIA scale), immediate peri-operative complications (within 30 days post-op), overall length of stay (LOS-A), length of stay from surgery (LOS-S), and total direct hospital costs were tabulated and analyzed...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27885473/the-application-of-a-new-type-of-titanium-mesh-cage-in-hybrid-anterior-decompression-and-fusion-technique-for-the-treatment-of-continuously-three-level-cervical-spondylotic-myelopathy
#17
Xiaowei Liu, Yu Chen, Haisong Yang, Tiefeng Li, Haidong Xu, Bin Xu, Deyu Chen
PURPOSE: To evaluate the efficacy and safety of a new type of titanium mesh cage (NTMC) in hybrid anterior decompression and fusion method (HDF) in treating continuously three-level cervical spondylotic myelopathy (TCSM). METHODS: Ninety-four cases who had TCSM and accepted the HDF from Jan 2007 to Jan 2010 were included. Clinical and radiological outcomes were compared between cases who had the NTMC (Group A, n = 45) and traditional titanium mesh cage (TTMC, Group B, n = 49) after corpectomies...
January 2017: European Spine Journal
https://www.readbyqxmd.com/read/27875415/a-posterior-oblique-approach-to-the-lumbar-disk-spaces-vertebral-bodies-and-lumbar-plexus-a-cadaveric-feasibility-study
#18
Alexander Spiessberger, Fabian Baumann, Martin Häusler, Frank Rühli, Javier Fandino, Carl Muroi
STUDY DESIGN: A laboratory cadaveric study. OBJECTIVE: We aimed to demonstrate the feasibility of a posterior oblique approach, sharing the same advantages as the transpsoas technique while minimizing the risk of lumbar plexus or psoas muscle injuries. SUMMARY OF BACKGROUND DATA: The transpsoas approach for interbody fusion and corpectomy offers advantages over posterior and anterior approaches. However, possible risks include traumatization of the psoas muscle or lumbar plexus...
November 21, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27857796/dwarf-with-dual-spinal-kyphotic-deformity-at-the-cervical-and-dorsal-spine-unassociated-with-odontoid-hypoplasia-surgical-management
#19
Guru Dutta Satyarthee, Dipanker Singh Mankotia
Morquio's syndrome is associated with systemic skeletal hypoplasia leading to generalized skeletal deformation. The hypoplasia of odontoid process is frequent association, which is responsible for atlantoaxial dislocation causing compressive myelopathy. However, development of sub-axial cervical kyphotic deformity unassociated with odontoid hypoplasia is extremely rare, and coexistence of dorsal kyphotic deformity is not reported in the western literature till date and represents first case. Current case is 16-year-old boy, who presented with severe kyphotic deformity of cervical spine with spastic quadriparesis...
July 2016: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/27853656/risk-factors-for-venous-thromboembolism-following-thoracolumbar-surgery-analysis-of-43-777-patients-from-the-american-college-of-surgeons-national-surgical-quality-improvement-program-2005-to-2012
#20
Arjun S Sebastian, Bradford L Currier, Sanjeev Kakar, Emily C Nguyen, Amy E Wagie, Elizabeth S Habermann, Ahmad Nassr
Study Design Retrospective clinical study of a prospectively collected, national database. Objective Determine the 30-day incidence, timing, and risk factors for venous thromboembolism (VTE) following thoracolumbar spine surgery. Methods The American College of Surgeons National Surgical Quality Improvement Program Participant Use File identified 43,777 patients who underwent thoracolumbar surgery from 2005 to 2012. Multiple patient characteristics were identified. The incidence and timing (in days) of deep vein thrombosis (DVT) and pulmonary embolus (PE) were determined...
December 2016: Global Spine Journal
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