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Spine implants

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https://www.readbyqxmd.com/read/28926385/graduation-protocol-after-growing-rod-treatment-removal-of-implants-without-new-instrumentation-is-not-a-realistic-approach
#1
Ismail Aykut Kocyigit, Z Deniz Olgun, H Gokhan Demirkiran, Mehmet Ayvaz, Muharrem Yazici
BACKGROUND: The growing rod remains an effective option in the treatment of early-onset scoliosis, and has previously been likened to an internal brace. While details of growing-rod treatment have been largely agreed on, the appropriate end point remains a matter of controversy. A decision was made in 2004, at the beginning of growing-rod treatment at our institution, to remove longitudinal instrumentation when the period of lengthening concluded and, similar to discontinuing a brace, leave the spine free...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28917286/intraoperative-3d-computed-tomography-spine-surgery
#2
REVIEW
Stephanie E Adamczak, Frank J Bova, Daniel J Hoh
Spinal instrumentation often involves placing implants without direct visualization of their trajectory or proximity to adjacent neurovascular structures. Two-dimensional fluoroscopy is commonly used to navigate implant placement, but with the advent of computed tomography, followed by the invention of a mobile scanner with an open gantry, three-dimensional (3D) navigation is now widely used. This article critically appraises the available literature to assess the influence of 3D navigation on radiation exposure, accuracy of instrumentation, operative time, and patient outcomes...
October 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/28915925/biomechanical-analysis-of-the-posterior-bony-column-of-the-lumbar-spine
#3
Jiukun Li, Shuai Huang, Yubo Tang, Xi Wang, Tao Pan
BACKGROUND: Each part of the rear bone structure can become an anchor point for an attachment device. The objective of this study was to evaluate the stiffness and strength of different parts of the rear lumbar bone structure by axial compression damage experiments. METHODS: Five adult male lumbar bone structures from L2 to L5 were exposed. The superior and inferior articular processes, upper and lower edges of the lamina, and upper and lower edges of the spinous process were observed and isolated and then divided into six groups (n = 10)...
September 15, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28914835/-surgical-treatment-of-pain-syndrome-in-lumbar-spine-in-patients-with-obesity
#4
A G Aganesov, E G Gemdzhyan, A L Kheilo, K P Mikaelyan, M M Alexanyan
AIM: To analyze the reduction of pain severity, time of surgery, intraoperative blood loss, incidence of unintentional lesion of dura mater, infectious complications and hospital-stay after lumbar microdiscectomy. MATERIAL AND METHODS: The study included 104 patients aged 24-58 years (37 men and 67 women, mean age 45 years) who underwent lumbar microdiscectomy within January 2015 - June 2016. The main and control groups consisted of 48 and 56 patients with and without obesity respectively...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28913559/risk-factors-for-implant-removal-after-spinal-surgical-site-infection
#5
Naoya Tsubouchi, Shunsuke Fujibayashi, Bungo Otsuki, Masanori Izeki, Hiroaki Kimura, Masato Ota, Takeshi Sakamoto, Akira Uchikoshi, Shuichi Matsuda
PURPOSE: Few studies have investigated the risk factors for implant removal after treatment for spinal surgical site infection (SSI). Therefore, there is no firmly established consensus for the management of implants. We aimed to investigate the incidence and risk factors for implant removal after SSI managed with instrumentation, and to examine potential strategies for avoiding implant removal. METHODS: Following a survey of seven spine centers, we retrospectively reviewed the records of 55 patients who developed SSI and were treated with reoperation, out of 3967 patients who had spinal instrumentation between 2003 and 2012...
September 14, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28913395/simultaneous-bilateral-total-hip-arthroplasty-in-morquio-syndrome
#6
Imran Ilyas, Syed Kashif, Samar Rabbani, Husam A Alrumaih
A 16-year-old girl who had Morquio syndrome presented with severe bilateral hip pain and limited mobility because of bilateral hip osteoarthritis and fixed flexion deformities. She was wheelchair bound for the previous 6 months. Cervical spine flexion-extension views showed mild subluxation (<3 mm), and there was thoracolumbar spine kyphosis. Magnetic resonance imaging of the cervical and thoracolumbar spine showed hypoplasia of the odontoid and vertebral bodies, but no spinal cord compression. Bilateral cemented total hip arthroplasty was performed through a posterior approach under general anesthesia with fiberoptic intubation...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28913293/facial-flap-repositioning-in-posttraumatic-facial-asymmetry
#7
Il Hwan Byun, Dahn Byun, Woo Yeol Baek
Perfect facial and body symmetry is an important aesthetic concept which is very difficult, if not impossible, to achieve. Yet, facial asymmetries are commonly encountered by plastic and reconstructive surgeons. Here, we present a case of posttraumatic facial asymmetry successfully treated with a unique concept of facial flap repositioning. A 25-year-old male patient visited our department with severe posttraumatic facial asymmetry. There was deviated nasal bone and implant to the right, and the actual facial appearance asymmetry was much more severe compared to the computed tomography, generally shifted to the right...
December 2016: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28894687/the-pedicles-are-not-the-densest-regions-of-the-lumbar-vertebrae-implications-for-bone-quality-assessment-and-surgical-treatment-strategy
#8
Eric A Hohn, Bryant Chu, Audrey Martin, Elizabeth Yu, Connor Telles, Jeremi Leasure, Tennyson L Lynch, Dimitriy Kondrashov
STUDY DESIGN: Cadaver study. OBJECTIVE: To determine the bone density of lumbar vertebral anatomic subregions. Bone mineral density (BMD) is a major factor in osseous fixation construct strength. The standard region for implant fixation of the spine is the pedicle; however, other regions may be more viable options with higher bone quality. METHODS: Using computed tomography images, the spine was digitally isolated by applying a filter for adult bone...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28893697/incidence-of-postoperative-hematomas-requiring-surgical-treatment-in-neurosurgery-a-retrospective-observational-study
#9
Kadri Lillemäe, Johanna Järviö, Marja Kaarina Silvasti-Lundell, Jussi Antinheimo, Juha Hernesniemi, Tomi Tapio Niemi
OBJECTIVE: We aimed to characterize the occurrence of postoperative hematoma (POH) after neurosurgery overall and according to procedure type, and describe the prevalence of possible confounders. METHODS: Patient data between 2010 and 2012 at the Department of Neurosurgery in Helsinki University Hospital were retrospectively analyzed. Data search was performed according to the type of surgery including craniotomies; shunt procedures, spine surgery and spinal cord stimulators (SCS) implantation...
September 8, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28887681/pediatric-spine-imaging-post-scoliosis-surgery
#10
Alaa N Alsharief, Ron El-Hawary, Pierre Schmit
Many orthopedic articles describe advances in surgical techniques and implants used in pediatric scoliosis surgery. However, even though postoperative spine imaging constitutes a large portion of outpatient musculoskeletal pediatric radiology, few, if any, radiology articles discuss this topic. There has been interval advancement over the last decades of the orthopedic procedures used in the treatment of spinal scoliosis in adolescents with idiopathic scoliosis. The goal of treatment in these patients is to stop the progression of the curve by blocking the spinal growth and correcting the deformity as much as possible...
September 8, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28882349/spine-growth-modulation-in-early-adolescent-idiopathic-scoliosis-two-year-results-of-prospective-us-fda-ide-pilot-clinical-safety-study-of-titanium-clip-screw-implant
#11
Eric J Wall, Joseph E Reynolds, Viral V Jain, Donita I Bylski-Austrow, George H Thompson, Paul J Samuels, Sean J Barnett, Alvin H Crawford
STUDY DESIGN: Prospective pilot clinical safety study of novel treatment, consecutive case series from first human use in patients with early adolescent idiopathic scoliosis (AIS). OBJECTIVE: The primary purpose was to determine the initial safety of a titanium clip-screw implant system for spine growth modulation. The secondary aim was to document curvatures to 2 years postoperatively. SUMMARY OF BACKGROUND DATA: Spinal growth modulation was documented in preclinical studies...
September 2017: Spine Deformity
https://www.readbyqxmd.com/read/28878518/on-demand-antibiotic-eluting-microchip-for-implanted-spinal-screws
#12
Adam E M Eltorai
OBJECTIVE: Surgical instrumentation of the spine is susceptible to infection. Intravenous antibiotics is a current mainstay of treating infection; however penetrating the bacterial biofilm and directly targeting the source of the infection is challenging. METHODS: Using multiple reservoirs of discrete drug doses, microchips represent a new technology capable of on-demand drug release over long periods of time. RESULTS: A novel solution of integrating vancomycin-eluting microchips into pedicle screws in order directly target and treat spinal infections is proposed...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28868203/titanium-versus-polyetheretherketone-implants-for-vertebral-body-replacement-in-the-treatment-of-77-thoracolumbar-spinal-fractures
#13
Rafael Augusto Castro Santiago Brandão, Warley Carvalho da Silva Martins, Aluízio Augusto Arantes, Sebastião Nataniel Silva Gusmão, Gilles Perrin, Cédric Barrey
BACKGROUND: Titanium and polyetheretherketone (PEEK) implants have been used in spinal surgery with low rejection rates. Compared to titanium, PEEK has many advantages, including a density more similar to that of bone, radiolucency, and a lack of artifacts in computed tomography (CT) and magnetic resonance imaging (MRI). In this study, we evaluated the effectiveness of PEEK cages as an alternative to titanium for bone fusion after fractures of the thoracolumbar spine. We also propose a classification to the impaction index...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28852357/influence-of-45s5-bioactive-glass-in-a-standard-calcium-phosphate-collagen-bone-graft-substitute-on-the-posterolateral-fusion-of-rabbit-spine
#14
Andrew J Pugely, Emily B Petersen, Nicole DeVries-Watson, Douglas C Fredericks
INTRODUCTION: Spinal fusion surgery is an effective but costly treatment for select spinal pathology. Historically iliac crest bone graft (ICBG) has remained the gold standard for achieving successful arthrodesis. Given well-established morbidity autograft harvest, multiple bone graft replacements, void fillers, and extenders have been developed. The objective of this study was to evaluate the in vivo efficacy and safety of two mineralized collagen bone void filler materials similar in composition...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28843763/metastatic-basal-cell-adenocarcinoma-of-submandibular-gland-to-the-spine-an-extremely-rare-condition-a-case-report
#15
Tinnakorn Pluemvitayaporn, Sombat Kunakornsawat, Chaiwat Piyaskulkaew, Pritsanai Pruttikul, Warongporn Pongpinyopap
Basal cell adenocarcinomas (BCACs) are rare malignant neoplasms of salivary glands, accounting for less than 1% of salivary gland tumors. Few cases of distant metastases have been reported. To our knowledge, metastases to the spine have not been previously reported in the literature. We presented an unusual case of a 50-year-old Thai male, who was diagnosed as basal cell adenocarcinoma of submandibular gland with pulmonary and cervical spine metastases with progressive myelopathy, treated with wide surgical resection of the soft tissue tumor and modified radical neck dissection, anterior cervical total corpectomy with fusion combined with posterior decompression and fusion of the cervical spine and surgical wound coverage by anterolateral thigh free tissue transfer, followed by adjuvant radiotherapy...
August 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28831392/pathoanatomic-risk-factors-for-instability-and-adjacent-segment-disease-in-lumbar-spine-how-to-use-topping-off
#16
REVIEW
J Bredow, L Löhrer, J Oppermann, M J Scheyerer, R Sobottke, P Eysel, J Siewe
PURPOSE: The goal of this review is to identify criteria indicating implantation of hybrid system into lumbar spine and to evaluate general benefits of use. METHODS: A systematic review of literature was performed using current randomized clinical trials, reviews, and meta-analyses. Data sources included relevant literature of human studies identified through searches of Medline Library until May 2015. RESULTS: Predisposing factors for Adjacent Segment Disease (ASDi) are discussed in literature: laminar horizontalization, insufficiency of fascia thoracolumbalis, facet tropism, and facet sagittalization...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28819694/thoracic-corpectomy-for-neoplastic-vertebral-bodies-using-a-navigated-lateral-extracavitary-approach-a-single-center-consecutive-case-series-technique-and-analysis
#17
Sebastian Hartmann, Christoph Wipplinger, Anja Tschugg, Pujan Kavakebi, Alexander Örley, Pierre Pascal Girod, Claudius Thomé
Thoracic myelopathy is often caused by vertebral body fractures resulting from neoplastic conditions, traumatic events, or infectious diseases. One of the preferred procedures for treating it is the lateral extracavitary approach (LECA) with single-level or multilevel decompressive corpectomy and reconstruction. The aim of this retrospective study was to analyze the thoracic lateral extracavitary approach with corpectomy using vertebral body replacement systems (VBR-S) and dorsal reconstruction. Twenty-four patients with metastatic or primary lesions of thoracic vertebrae T2-T12 underwent spinal decompression and ventral column reconstruction with correction of spinal deformity via a LECA...
August 17, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28816877/fractures-in-spinal-ankylosing-disorders-a-narrative-review-of-disease-and-injury-types-treatment-techniques-and-outcomes
#18
Tarush Rustagi, Doniel Drazin, Cumhur Oner, Jonathan York, Gregory D Schroeder, Alexander R Vaccaro, Rod J Oskouian, Jens R Chapman
INTRODUCTION: Spinal ankylosing disorders encompass ankylosing spondylitis (AS), disseminated hyperostosis of the spine, and end-stage spondylosis. All these result in a stiffened and frequently deformed spinal column. This makes the spinal column highly susceptible to severe injuries that are commonly associated with unfavorable outcomes. Improved understanding of the underlying disease processes and clinical comorbidities may alter the poor injury related morbidity and mortality outcomes...
September 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28815357/carbon-fiber-reinforced-peek-fixation-system-in-the-treatment-of-spine-tumors-a-preliminary-report
#19
Stefano Boriani, Giuseppe Tedesco, Lu Ming, Riccardo Ghermandi, Maurizio Amichetti, Piero Fossati, Marco Krengli, Loredana Mavilla, Alessandro Gasbarrini
BACKGROUND: Protocols including combination of surgery and radiotherapy are more and more frequent in the treatment of bone tumors of the spine. In metastatic disease, combination of surgery and radiotherapy is since long time accepted, as based on clinical evidence. In primary tumors, combination of surgery and radiotherapy can be considered in all the cases in which a satisfactory oncological margin cannot be achieved: high-grade malignancies, recurrent tumors, huge tumors expanding in an extracompartimental area, and when tumor-free margin requires unacceptable functional sacrifices...
August 16, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28811983/a-novel-spinal-implant-for-fusionless-scoliosis-correction-a-biomechanical-analysis-of-the-motion-preserving-properties-of-a-posterior-periapical-concave-distraction-device
#20
Roderick M Holewijn, Marinus de Kleuver, Albert J van der Veen, Kaj S Emanuel, Arno Bisschop, Agnita Stadhouder, Barend J van Royen, Idsart Kingma
STUDY DESIGN: Biomechanical study. OBJECTIVE: Recently, a posterior concave periapical distraction device for fusionless scoliosis correction was introduced. The goal of this study was to quantify the effect of the periapical distraction device on spinal range of motion (ROM) in comparison with traditional rigid pedicle screw-rod instrumentation. METHODS: Using a spinal motion simulator, 6 human spines were loaded with 4 N m and 6 porcine spines with 2 N m to induce flexion-extension (FE), lateral bending (LB), and axial rotation (AR)...
August 2017: Global Spine Journal
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