keyword
MENU ▼
Read by QxMD icon Read
search

Spine implants

keyword
https://www.readbyqxmd.com/read/28230622/restriction-of-cervical-intervertebral-movement-with-different-types-of-external-immobilizers-a-cadaveric-3d-analysis-study
#1
Micha Holla, Gerjon Hannink, Thomas G E Eggen, Robin A Daanen, Allard J F Hosman, Nico Verdonschot
STUDY DESIGN: Cadaveric radiostereometric analysis study. OBJECTIVE: To quantify the ability of 5 commonly used immobilizers to restrict cervical spine movement, including intervertebral movement, in three directions. SUMMARY OF BACKGROUND DATA: Evidence about the ability of many clinically used cervical immobilizers to restrict cervical movement is limited. Furthermore, their effect on intervertebral movement is unknown. METHODS: Radiographic inert beads were implanted in the cervical vertebral bodies of five fresh-frozen human cadavers...
February 22, 2017: Spine
https://www.readbyqxmd.com/read/28226581/automatic-lumbar-vertebrae-detection-based-on-feature-fusion-deep-learning-for-partial-occluded-c-arm-x-ray-images
#2
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/28222402/impact-of-anchor-type-on-porcine-lumbar-biomechanics-finite-element-modelling-and-in-vitro-validation
#3
Martin Brummund, Vladimir Brailovski, Yvan Petit, Yann Facchinello, Jean-Marc Mac-Thiong
BACKGROUND: Rigid posterior implants used for spinal stabilization can be anchored to the vertebrae using pedicle screws or screws combined with transverse process hooks. In the present study, a finite element model of a porcine lumbar spine instrumented with screws and hooks is presented and validated. METHODS: The porcine lumbar spine model was validated using in-vitro measurements on six porcine specimens. Validation metrics included intervertebral rotations (L1 to L6) and nucleus pressure in the topmost cranial instrumented disc...
February 14, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28191306/chiropractic-management-of-post-spinal-cord-stimulator-spine-pain-a-case-report
#4
Rachel M Perrucci, Christopher M Coulis
BACKGROUND: A brief overview of failed back surgery syndrome, with emphasis on low back pain status post spinal cord stimulation, and post-surgical spinal manipulation is presented. CASE PRESENTATION: Four cases of patients within the VA Connecticut Health Care System presenting between July 2014 and July 2015 reporting low back pain after surgical insertion of spinal cord stimulators are discussed. This study describes the outcomes experienced by four patients with low back pain status post implanted spinal cord stimulators receiving manual therapy in the form of lumbar spine manipulation or mobilization...
2017: Chiropractic & Manual Therapies
https://www.readbyqxmd.com/read/28188485/feasibility-of-laser-guided-percutaneous-pedicle-screw-placement-in-the-lumbar-spine-using-a-hybrid-or
#5
P H Richter, F Gebhard, M Salameh, K Schuetze, M Kraus
PURPOSE: Innovations in intraoperative imaging lead to major changes in orthopaedic surgery. In our setting, a 3D flat-panel c-arm (Artis zeego) is mounted on a robotic arm offering an integrated aiming tool (Syngo iGuide). Our aim was to investigate the feasibility of Syngo iGuide for pedicle screw placement in comparison with fluoroscopic screw implantation. METHODS: In 10 lumbar models, 100 screws were implanted. In 5 models, a standard fluoroscopic technique was used...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#6
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28184249/atlantoaxial-rotatory-fixation-as-a-rare-complication-from-head-positioning-in-otologic-surgery-report-of-two-cases-in-young-children
#7
Hiroshi Sakaida, Koji Akeda, Akihiro Sudo, Kazuhiko Takeuchi
BACKGROUND: Atlantoaxial rotatory fixation is a condition in which the first and second vertebrae of the cervical spine become interlocked in a rotated position. This condition can result in serious consequences and thus have a significant impact on patients, especially when diagnosis and treatment are delayed. Some cases of atlantoaxial rotatory fixation have been described in association with otologic surgery or plastic surgery involving the ear. We present the cases of two pediatric patients who developed atlantoaxial rotatory fixation following otologic surgery and we review the relevant literature...
2017: Patient Safety in Surgery
https://www.readbyqxmd.com/read/28168635/imaging-of-post-surgical-treatment-and-of-related-complications-in-spinal-trauma
#8
REVIEW
F Caranci, G Leone, L Ugga, E Cesarano, R Capasso, S Schipani, A Bianco, P Fonio, F Briganti, L Brunese
Spinal trauma is a devastating event with a high morbidity and mortality. The rationale of imaging is to diagnose the traumatic abnormalities and characterize the type of injury, to estimate the severity of the lesions, to evaluate the potential spinal instability. In case of spinal instability, the goals of operative treatment are decompression of the spinal cord canal and stabilization of the disrupted vertebral column. Particularly, diagnostic imaging, mainly by CT and MR, has a main role in the post-treatment evaluation...
February 6, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28160064/minimally-invasive-transforaminal-lumbar-interbody-fusion-versus-open-transforaminal-lumbar-interbody-fusion-a-technical-description-and-review-of-the-literature
#9
Martin Vazan, Jens Gempt, Bernhard Meyer, Niels Buchmann, Yu- Mi Ryang
BACKGROUND: Minimally invasive spine surgery (MISS) has been increasingly advocated during the last decade with new studies being reported every year. Minimally invasive spine procedures, such as minimally invasive transforaminal interbody fusion (MI-TLIF), have been introduced to reduce approach-related muscle trauma, to minimise blood loss, and to achieve faster wound healing, quicker ambulation and earlier patient discharge. METHODS: The aim of this article was to give a comprehensive review of the available English literature comparing open TLIF with MI-TLIF techniques published or available online between 1990 and 2014 as identified by an electronic database search on http://www...
February 3, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28156208/image-guided-intrathecal-baclofen-pump-catheter-implantation-a-technical-note-and-case-series
#10
Shenandoah Robinson, Faith C Robertson, Hormuzdiyar H Dasenbrock, Cormac P O'Brien, Charles Berde, Horacio Padua
OBJECTIVE Medically refractory spasticity and dystonia are often alleviated with intrathecal baclofen (ITB) administration through an indwelling catheter inserted in the lumbar spine. In patients with cerebral palsy, however, there is a high incidence of concomitant neuromuscular scoliosis. ITB placement may be technically challenging in those who have severe spinal deformity or who have undergone prior instrumented thoracolumbar fusion. Although prior reports have described drilling through the lumbar fusion mass with a high-speed bur, as well as IT catheter implantation at the foramen magnum or cervical spine, these approaches have notable limitations...
February 3, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28155820/analysis-of-reasons-for-failure-of-surgery-for-degenerative-disease-of-lumbar-spine
#11
Alicja Baranowska, Joanna Baranowska, Paweł Baranowski
BACKGROUND: In the aging society, there is a growing number of patients with advanced degenerative disease of the spine. These patients frequently require surgical treatment. This paper aims to analyse the reasons for failure of surgery for degenerative disease of the lumbar spine. MATERIAL AND METHODS: Histories of patients operated on by one group of surgeons in the Neuroorthopaedic Department of "STOCER" in 2014 and 2015 due to degenerative disease of the lumbar spine were analysed retrospectively...
March 23, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28153036/biomechanical-comparison-of-multilevel-lateral-interbody-fusion-with-and-without-supplementary-instrumentation-a-three-dimensional-finite-element-study
#12
Xilin Liu, Jun Ma, Paul Park, Xiaodong Huang, Ning Xie, Xiaojian Ye
BACKGROUND: Lateral lumbar interbody fusion (LLIF) is a popular, minimally invasive technique that is used to address challenging multilevel degenerative spinal diseases. It remains controversial whether supplemental instrumentation should be added for multilevel LLIF. In this study, we compared the kinematic stability afforded by stand-alone lateral cages with those supplemented by bilateral pedicle screws and rods (PSR), unilateral PSR, or lateral plate (LP) fixation using a finite-element (FE) model of a multi-level LLIF construct with simulated osteoporosis...
February 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28145954/intra-articular-vancomycin-powder-eliminates-methicillin-resistant-s-aureus-in-a-rat-model-of-a-contaminated-intra-articular-implant
#13
Adam I Edelstein, Joseph A Weiner, Ralph W Cook, Danielle S Chun, Emily Monroe, Sean M Mitchell, Abhishek Kannan, Wellington K Hsu, S David Stulberg, Erin L Hsu
BACKGROUND: Periprosthetic joint infection following hip and knee arthroplasty leads to poor outcomes and exorbitant costs. Topical vancomycin powder has been shown to decrease infection in many procedures such as spine surgery. The role of vancomycin powder in the setting of total joint arthroplasty remains undefined. Our aim was to evaluate the efficacy of intra-articular vancomycin powder in preventing infection in a rat model of a contaminated intra-articular implant. METHODS: Thirty-two female Sprague-Dawley rats underwent knee arthrotomy and implantation of a femoral intramedullary wire with 1 mm of intra-articular communication...
February 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28144269/radioisotopic-assessment-of-bone-metabolism-of-the-operated-vertebra-after-inter-process-stabilizer-implantation-in-the-lumbar-segment-of-the-spine
#14
Maciej Radek, Andrzej Radek, Jacek Rysz, Zbigniew Maziarz, Mariusz Gadzicki, Wiesław Tryniszewski
INTRODUCTION: Lack of efficacy of pharmacotherapy and physiotherapy in spinal pain syndrome is an indication for intervertebral stabilizer implantation between the processes in the lumbar segment of the spine. MATERIAL AND METHODS: The group consisted of 32 patients qualified after radioisotopic single-photon emission computed tomography/computed tomography (SPECT/CT) examinations with assessment of bone metabolism and mineral density. For comparative purposes, the L2 vertebra was defined as normal...
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28143506/utilization-of-ct-scanning-associated-with-complex-spine-surgery
#15
Vikas V Patel, Gunnar B J Andersson, Steven R Garfin, Donald L Resnick, Jon E Block
BACKGROUND: Due to the risk associated with exposure to ionizing radiation, there is an urgent need to identify areas of CT scanning overutilization. While increased use of diagnostic spinal imaging has been documented, no previous research has estimated the magnitude of follow-up imaging used to evaluate the postoperative spine. METHODS: This retrospective cohort study quantifies the association between spinal surgery and CT utilization. An insurance database (Humana, Inc...
January 31, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28141685/veptr-implantation-to-treat-children-with-early-onset-scoliosis-without-rib-abnormalities-early-results-from-a-prospective-multicenter-study
#16
Ron El-Hawary, Muayad Kadhim, Michael Vitale, John Smith, Amer Samdani, John M Flynn
BACKGROUND: Thoracoplasty and insertion of vertical expandable prosthetic titanium rib (VEPTR) for thoracic and spine distraction has been found to be effective in the treatment of early-onset scoliosis (EOS) with ribs anomalies and congenital vertebral anomalies. The aim of this study was to evaluate the efficacy of VEPTR in preventing further progression of scoliosis without impeding spinal growth in children with progressive EOS without rib abnormalities. METHODS: This is a prospective, multicenter, observational cohort study...
January 30, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28138771/l5-corpectomy-the-lumbosacral-segmental-geometry-and-clinical-outcome-a-consecutive-series-of-14-patients-and-review-of-the-literature
#17
Martin Vazan, Yu-Mi Ryang, Julia Gerhardt, Felix Zibold, Insa Janssen, Florian Ringel, Jens Gempt, Bernhard Meyer
PURPOSE: We analyzed the lumbosacral segmental geometry and clinical outcome in patients undergoing L5 corpectomy. METHODS: Fourteen consecutive patients who underwent L5 (n = 12) or L4 + 5 (n = 2) corpectomy at our department between January 2010 and April 2015 were included. All patients underwent a baseline physical and neurologic examination on admission. The diagnostic routine included MRI and CT scans and, if possible, an upright X-ray of the lumbar spine before and after surgery...
January 31, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28132596/comparison-of-two-moldable-calcium-phosphate-based-bone-graft-materials-in-a-non-instrumented-canine-interspinous-implantation-model
#18
Davide Barbieri, Huipin Yuan, Ali Ismailoğlu, Joost de Bruijn
There is a continuing search for novel synthetic materials as an alternative to autologous bone grafting. Different technologies are explored to promote bone formation, which include the addition of BioGlassTM particles in calcium phosphate (CaP) based materials and the use of surface modification in the form of submicron surface topographies. In this work we aimed at comparing the bone formation in a non-instrumented canine interspinous (IS) model of moldable formulations of a submicron surface structured tricalcium phosphate/alkylene oxide (CaP/AOC) or a tricalcium phosphate/BioGlassTM/collagen (CaP/BG/C) bone graft material...
January 28, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28128700/biomechanical-evaluation-of-an-integrated-fixation-cage-during-fatigue-loading-a-human-cadaver-study
#19
Vivek Palepu, Jonathan H Peck, David D Simon, Melvin D Helgeson, Srinidhi Nagaraja
OBJECTIVE Lumbar cages with integrated fixation screws offer a low-profile alternative to a standard cage with anterior supplemental fixation. However, the mechanical stability of integrated fixation cages (IFCs) compared with a cage with anterior plate fixation under fatigue loading has not been investigated. The purpose of this study was to compare the biomechanical stability of a screw-based IFC with a standard cage coupled with that of an anterior plate under fatigue loading. METHODS Eighteen functional spinal units were implanted with either a 4-screw IFC or an anterior plate and cage (AP+C) without integrated fixation...
January 27, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28125437/value-in-single-level-lumbar-discectomy-surgical-disposable-item-cost-and-relationship-to-patient-reported-outcomes
#20
Benjamin P Rosenbaum, Michael T Modic, Ajit A Krishnaney
STUDY DESIGN: This is a retrospective study. OBJECTIVE: Compare improvements in health status measures (HSMs) and surgical costs to determine whether use of more costly items has any relationship to clinical outcome and value in lumbar disc surgery. SUMMARY OF BACKGROUND DATA: Association between cost, outcomes, and value in spine surgery, including lumbar discectomy is poorly understood. Outcomes were calculated as difference in mean HSM scores between preoperative and postoperative timeframes...
January 25, 2017: Clinical Spine Surgery
keyword
keyword
55544
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"