keyword
MENU ▼
Read by QxMD icon Read
search

Spine implants

keyword
https://www.readbyqxmd.com/read/28543304/biomechanical-comparison-between-pins-and-polymethylmethacrylate-and-the-sop-locking-plate-system-to-stabilize-canine-lumbosacral-fracture-luxation-in-flexion-and-extension
#1
Johannes J Nel, Cor-Jacques Kat, Gert L Coetzee, Paul J van Staden
OBJECTIVE: To determine the stability of a simulated complete L7-S1 fracture-luxation immobilized with SOP locking plate system, compared to pins and polymethylmethacrylate (PMMA). STUDY DESIGN: In vitro biomechanical study. ANIMALS: Cadaver specimens of 18 skeletally mature large-breed dogs. MATERIALS AND METHODS: Specimens were randomly stabilized with one of the two fixation techniques. Lumbosacral spine specimens (L5-S3) were subjected to a bending moment applied to the caudal and cranial ends of the specimen...
May 24, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28540144/spondylitis-transmitted-from-infected-aortic-grafts-a-review
#2
REVIEW
Panayiotis D Megaloikonomos, Thekla Antoniadou, Leonidas Dimopoulos, Marcos Liontos, Vasilios Igoumenou, Georgios N Panagopoulos, Efthymia Giannitsioti, Andreas Lazaris, Andreas F Mavrogenis
Graft infection following aortic aneurysms repair is an uncommon but devastating complication; its incidence ranges from <1% to 6% (mean 4%), with an associated perioperative and overall mortality of 12% and 17.5-20%, respectively. The most common causative organisms are Staphylococcus aureus and Escherichia coli; causative bacteria typically arise from the skin or gastrointestinal tract. The pathogenetic mechanisms of aortic graft infections are mainly breaks in sterile technique during its implantation, superinfection during bacteremia from a variety of sources, severe intraperitoneal or retroperitoneal inflammation, inoculation of bacteria during postoperative percutaneous interventions to manage various types of endoleaks, and external injury of the vascular graft...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28532908/the-safety-and-efficiency-of-pvcr-without-anterior-support-applied-in-treatment-of-yang-s-a-type-severe-thoracic-kyphoscoliosis
#3
Wen-Yuan Sui, Zi-Fang Huang, Yao-Long Deng, Heng-Wei Fan, Jing-Fan Yang, Fo-Bao Li, Jun-Lin Yang
OBJECT: To assess the clinical and radiographic outcomes of posterior vertebral column resection (PVCR) without anterior support in treatment of Yang's A type severe rigid thoracic kyphoscoliosis. METHODS: The records of 27 Yang's A type severe thoracic kyphoscoliosis patients treated with PVCR without anterior support from January 2010 to September 2013 were retrospectively analyzed. Intraoperative multimodal neurophysiological monitoring (IONM) (6 modes: Somatosensory evoked potential (SSEP), Motor evoked potential (MEP), Descending neurogenic evoked potential (DNEP), Spinal cord evoked potential (SCEP), and Electromyography, both triggered and free run EMG) was conducted in all patients...
May 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28527584/a-combined-passive-and-active-musculoskeletal-model-study-to-estimate-l4-l5-load-sharing
#4
F Azari, N Arjmand, A Shirazi-Adl, T Rahimi-Moghaddam
A number of geometrically-detailed passive finite element (FE) models of the lumbar spine have been developed and validated under in vitro loading conditions. These models are devoid of muscles and thus cannot be directly used to simulate in vivo loading conditions acting on the lumbar joint structures or spinal implants. Gravity loads and muscle forces estimated by a trunk musculoskeletal (MS) model under twelve static activities were applied to a passive FE model of the L4-L5 segment to estimate load sharing among the joint structures (disc, ligaments, and facets) under simulated in vivo loading conditions...
May 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28523160/do-low-profile-implants-provide-reliable-stability-in-fixing-the-sternal-fractures-as-a-fourth-vertebral-column-in-sternovertebral-injuries
#5
Sebastian Krinner, Sina Grupp, Pascal Oppel, Andreas Langenbach, Friedrich F Hennig, Stefan Schulz-Drost
BACKGROUND: Flexion and compression forces to the trunk can cause severe instability of the vertebral column and the anterior chest wall, mostly associated with an unstable fracture of the sternum. In combination, the worst case would be a complete disruption of the trunk. Some authors consider the sternum-rib-complex to be the fourth vertebral column. This study discusses the possibilities to treat instable trunk injuries with sternal fractures concomitant to vertebral spine fractures through anterior sternal plating employing a locked plate osteosynthesis in a low profile design instead of the use of bulky implants...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28522401/comparison-of-the-osteogenesis-and-fusion-rates-between-activin-a-bmp-2-chimera-ab204-and-rhbmp-2-in-a-beagle-s-posterolateral-lumbar-spine-model
#6
Guang Bin Zheng, Byung-Hak Yoon, Jae Hyup Lee
BACKGROUND CONTEXT: Activin A/BMP-2 chimera (AB204) could promote bone healing more effectively than recombinant bone morphogenetic protein 2 (rhBMP-2) with much lower dose in rodent model, but there is no report about the effectiveness of AB204 in a large animal model. PURPOSE: The purpose of this study was to compare the osteogenesis and fusion rate between AB204 and rhBMP-2 using biphasic calcium phosphate (BCP) as a carrier in beagle's posterolateral lumbar fusion model...
May 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28520623/the-sub-crestal-iliac-screw-a-technical-note-describing-a-free-hand-in-line-low-profile-iliac-screw-insertion-technique-to-avoid-side-connector-use-and-reduce-implant-complications
#7
Gabriel Liu, Muhammed Yaser Hasan, Hee-Kit Wong
STUDY-DESIGN: Case-series. OBJECTIVE: Report our modified iliac-screw insertion technique and its clinical outcomes. SUMMARY OF BACKGROUND DATA: Iliac-screws are one of the preferred methods for modern spinopelvic-fixation. However the technique is not without complications, predominantly due to iliac-screw head prominence, leading to pain and revisions. Conventional iliac-screw entry point is sited superficially at the posterior-superior-iliac-spine (PSIS) contributing to screw-head prominence...
May 17, 2017: Spine
https://www.readbyqxmd.com/read/28513885/biomechanical-function-of-a-balloon-nucleus-pulposus-replacement-system-a-human-cadaveric-spine-study
#8
Taekyeong Lee, Tae-Hong Lim, Sang-Heon Lee, Joo-Han Kim, Junghwa Hong
With recent advances in motion-sparing techniques in spine surgery, disc nucleus replacement (DNR) has been introduced as a viable method to restore the biomechanical functions of the spine. Several methods of DNR have been proposed in the literature. However, the risk of device migration or extrusion is a major issue that should be addressed for a successful DNR. DNR using a balloon nucleus (BN) filled with pressurized fluid may be capable of reducing such risks while preserving the advantages of DNR. The objective of this study was to investigate the biomechanical functionalities of the human cadaveric lumbar motion segments with a custom made BN filled with saline at internal fluid pressure of 0...
May 17, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28501956/an-in-vitro-evaluation-of-sagittal-alignment-in-the-cervical-spine-after-insertion-of-supraphysiologic-lordotic-implants
#9
Donald J Blaskiewicz, Jeffrey E Harris, Patrick P Han, Alexander W Turner, Gregory M Mundis
PURPOSE: Cervical spine malalignment can develop as a consequence of degenerative disc disease or following spinal surgery. When normal sagittal alignment of the spine is disrupted, further degeneration may occur adjacent to the deformity. The purpose of this study was to investigate changes in lordosis and sagittal alignment in the cervical spine after insertion of supraphysiologic lordotic implants. METHODS: Eight cadaveric cervical spines (Occiput-T1) were tested...
May 13, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28499893/vertebroplasty-and-interventional-radiology-procedures-for-bone-metastases
#10
Jean-Denis Laredo, Jacques Chiras, Salim Kemel, Lokmane Taihi, Bassam Hamze
Advances in cancer treatments have lengthened the survival of patients with bone metastases. Optimal control of the symptoms and prevention of the complications associated with bone metastases improve quality of life. Achieving these goals increasingly involves interventional radiology procedures. These include bone consolidation and analgesic techniques such as cementoplasty (vertebroplasty at the spine); percutaneous implantation of screws, metallic reinforcement devices, or intraosseous implants; and tumor destruction using thermal methods (radiofrequency and cryotherapy), chemicals (alcohol), and drugs (chemoembolization), which have fewer indications...
May 9, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28498291/multi-level-3d-printing-implant-for-reconstructing-cervical-spine-with-metastatic-papillary-thyroid-carcinoma
#11
Xiucan Li, Yiguo Wang, Yongfei Zhao, Jianheng Liu, Songhua Xiao, Keya Mao
STUDY DESIGN: A unique case report. OBJECTIVE: A three-dimensional (3D) printing technology is proposed for reconstructing multi-level cervical spine (C2-C4) after resection of metastatic papillary thyroid carcinoma in a middle-age female patient. SUMMARY OF BACKGROUND DATA: Papillary thyroid carcinoma is a malignant neoplasm with a relatively favorable prognosis. A metastatic lesion in multi-level cervical spine (C2-C4) destroys neurological functions and causes local instability...
May 11, 2017: Spine
https://www.readbyqxmd.com/read/28498056/risk-factors-for-surgical-site-infections-and-assessment-of-vancomycin-powder-as-a-preventive-measure-in-patients-undergoing-first-time-cranioplasty
#12
Kingsley O Abode-Iyamah, Hsiu-Yin Chiang, Nolan Winslow, Brian Park, Mario Zanaty, Brian J Dlouhy, Oliver E Flouty, Zachary D Rasmussen, Loreen A Herwaldt, Jeremy D Greenlee
OBJECTIVE Craniectomy is often performed to decrease intracranial pressure following trauma and vascular injuries. The subsequent cranioplasty procedures may be complicated by surgical site infections (SSIs) due to prior trauma, foreign implants, and multiple surgeries through a common incision. Several studies have found that intrawound vancomycin powder (VP) is associated with decreased risk of SSIs after spine operations. However, no previously published study has evaluated the effectiveness of VP in cranioplasty procedures...
May 12, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28493215/cervical-disc-replacement-surgery-indications-technique-and-technical-pearls
#13
REVIEW
Dante Leven, Joshua Meaike, Kris Radcliff, Sheeraz Qureshi
PURPOSE OF REVIEW: Cervical disc replacement (CDR) is a surgical option for appropriately indicated patients, and high success rates have been reported in the literature. Complications and failures are often associated with patient indications or technical variables, and the goal of this review is to assist surgeons in understanding these factors. RECENT FINDINGS: Several investigations have been published in the last 5 years supporting the use of CDR in specific patient populations...
May 10, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28488095/extreme-lateral-interbody-fusion-in-spinal-revision-surgery-clinical-results-and-complications
#14
Matteo Formica, Andrea Zanirato, Luca Cavagnaro, Marco Basso, Stefano Divano, Lamberto Felli, Carlo Formica
PURPOSE OF THE STUDY: To evaluate clinical outcomes and complications of extreme lumbar interbody fusion (XLIF) in spinal revision surgery comparing our data with the available literature evidence about other fusion techniques. MATERIALS AND METHODS: Retrospective analysis of patients underwent revision surgery with XLIF as interbody fusion technique. Demographic, comorbidity, surgical data, clinical results, and intraoperative and postoperative complications were recorded...
May 9, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28486045/in-vitro-generated-intervertebral-discs-towards-engineering-tissue-integration
#15
Jonathan Iu, Eric Massicotte, Shu-Qiu Li, Mark B Hurtig, Ehsan Toyserkani, J Paul Santerre, Rita Kandel
The intervertebral disc (IVD) is composed of nucleus pulposus (NP) surrounded by multilamellated annulus fibrosus (AF), and is located between the vertebral bodies. Current treatments for chronic neck or low back pain do not completely restore the functionality of degenerated IVDs. Thus developing biological disc replacements is an approach of great interest. Given the complex structure of the IVD, tissue engineering of the individual IVD components and then combining them together may be the only way to achieve this...
May 9, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28466094/periosteal-turndown-flap-for-posterior-occipitocervical-fusion-a-technique-review
#16
Siamak Yasmeh, Adrienne Quinn, Liam Harris, Austin E Sanders, Ted Sousa, David L Skaggs, Lindsay M Andras
PURPOSE: Recently, several authors have proposed techniques for improving the fusion rate in pediatric posterior occipitocervical fusion including a variety of implants and the use of bone morphogenetic protein. A technique by Koop et al. using a periosteal flap for occipitocervical arthrodesis was described in 1984. METHODS: A straight incision is made about the posterior neck to expose the occipitocervical region from the inion superiorly to the lowest cervical vertebrae to be fused inferiorly...
May 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28465722/does-partial-coating-with-titanium-improve-the-radiographic-fusion-rate-of-empty-peek-cages-in-cervical-spine-surgery-a-comparative-analysis-of-clinical-data
#17
Andreas Kotsias, Sven Mularski, Björn Kühn, Michael Hanna, Olaf Suess
BACKGROUND: Anterior cervical diskectomy and fusion (ACDF) is a well-established surgical treatment. Several types of intervertebral spacers can be used, but there is increasing evidence that PEEK cages yield insufficient fusion and thus less clinical improvement. The study aim was to assess the outcomes of single-level ACDF with an empty PEEK cage partially coated with titanium. METHODS: This prospective multicenter single-arm clinical study collected follow-up data at 6, 12, and 18 months...
2017: Patient Safety in Surgery
https://www.readbyqxmd.com/read/28463618/current-applications-of-robotics-in-spine-surgery-a-systematic-review-of-the-literature
#18
Jacob R Joseph, Brandon W Smith, Xilin Liu, Paul Park
OBJECTIVE Surgical robotics has demonstrated utility across the spectrum of surgery. Robotics in spine surgery, however, remains in its infancy. Here, the authors systematically review the evidence behind robotic applications in spinal instrumentation. METHODS This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Relevant studies (through October 2016) that reported the use of robotics in spinal instrumentation were identified from a search of the PubMed database...
May 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28459724/anesthetic-challenges-for-posterior-spine-surgery-in-patient-with-left-ventricular-assist-device-a-case-report
#19
J Pablo Kollmar, Douglas A Colquhoun, Julie L Huffmyer
With the growing rate of left ventricular assist device (LVAD) implantation, patients with end-stage heart failure and LVAD support are presenting for a variety of noncardiac surgeries. We describe a case of urgent posterior lumbar decompression for spinal stenosis in a 73-year-old man with HeartMateII LVAD, which presented significant anesthetic challenges in terms of positioning, blood loss, and coagulopathy.
April 28, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28456854/anterior-support-reduces-the-stresses-on-the-posterior-instrumentation-after-pedicle-subtraction-osteotomy-a-finite-element-study
#20
Andrea Luca, Claudia Ottardi, Alessio Lovi, Marco Brayda-Bruno, Tomaso Villa, Fabio Galbusera
STUDY DESIGN: The investigation was based on finite-element simulations. OBJECTIVE: Pedicle subtraction osteotomy (PSO) is an effective but technical demanding surgical technique, associated with a high risk of rod failure. The present study aims at investigating the role of the anterior support in combination with PSO, with a numerical comparative analysis. METHODS: An osteotomy was simulated at the L3 level of a lumbosacral spine. An implantation of various combinations of devices for the anterior (1 or 2 cages of different material) and posterior stabilization (1 or 2 rods) was then performed...
April 29, 2017: European Spine Journal
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"