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https://www.readbyqxmd.com/read/27933475/how-safe-is-minimally-invasive-pedicle-screw-placement-for-treatment-of-thoracolumbar-spine-fractures
#1
Timo Michael Heintel, Stefan Dannigkeit, Annabel Fenwick, Martin Cornelius Jordan, Hendrik Jansen, Fabian Gilbert, Rainer Meffert
STUDY DESIGN: Prospective analysis of patients who underwent minimally invasive posterior instrumentation. OBJECTIVE: The purpose of this study was to evaluate the safety of minimally invasive pedicle screw placement in patients with unstable thoracic and lumbar spine fractures using the conventional fluoroscopy technique. Although wound infection, haematoma, and new neurological deficit due to screw malplacement remain a common source of morbidity, estimates of their rates of occurrence remain relatively limited...
December 8, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27927549/deep-spine-infection-after-acupuncture-in-the-setting-of-spinal-instrumentation
#2
Alexandra K Callan, Jennifer M Bauer, Jeffrey E Martus
BACKGROUND: Acupuncture can be used to manage chronic pain. The most common complications related to acupuncture include pain, bruising, bleeding, or symptom exacerbation. Rarely, more serious adverse events occur, including infection, pneumothorax, septic arthritis, and peripheral nerve injury. To our knowledge, there are no reports of complications associated with acupuncture following spinal instrumentation. PURPOSE: To report a case of deep infection as a rare complication of acupuncture following posterior spinal fusion for adolescent idiopathic scoliosis...
March 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927504/does-the-type-of-metal-instrumentation-affect-the-risk-of-surgical-site-infection-in-pediatric-scoliosis-surgery
#3
Margaret L Wright, David L Skaggs, Hiroko Matsumoto, Regina P Woon, Ashley Trocle, John M Flynn, Michael G Vitale
STUDY DESIGN: Retrospective cohort study. OBJECTIVES: To determine the association of implant metal composition with the risk of surgical site infection (SSI) following pediatric spine surgery. SUMMARY OF BACKGROUND DATA: SSI is a well-described complication following pediatric spine surgery. Many risk factors have been identified in the literature, but controversy remains regarding metal composition as a risk factor. METHODS: This was a retrospective study of patients who underwent posterior spinal instrumentation procedures between January 1, 2006, and December 31, 2008, at three large children's hospitals for any etiology of scoliosis and had at least 1 year of postoperative follow-up...
May 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927491/age-at-initiation-and-deformity-magnitude-influence-complication-rates-of-surgical-treatment-with-traditional-growing-rods-in-early-onset-scoliosis
#4
Vidyadhar V Upasani, Kevin C Parvaresh, Jeff B Pawelek, Patricia E Miller, George H Thompson, David L Skaggs, John B Emans, Michael P Glotzbecker
STUDY DESIGN: Multi-center retrospective review. OBJECTIVE: The purpose of this study was to identify preoperative variables associated with postoperative complications in early-onset scoliosis (EOS) patients treated with traditional growing rods (TGR); and to develop a model to predict the incidence of postoperative complications based on preoperative variables. SUMMARY OF BACKGROUND DATA: TGRs are commonly used to treat progressive EOS. Prior research has demonstrated a high rate of postoperative complications using this technique; however, few studies have identified preoperative factors that contribute to such complications...
September 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927489/sagittal-spine-length-measurement-a-novel-technique-to-assess-growth-of-the-spine
#5
Alan J Spurway, Chukwudi K Chukwunyerenwa, Waleed E Kishta, Jennifer K Hurry, Ron El-Hawary
STUDY DESIGN: The accuracy and repeatability of a novel sagittal spine length (SSL) radiographic measurement was examined using photographic and radiographic imaging. OBJECTIVES: To validate the new SSL technique for measuring growth in early-onset scoliosis (EOS) patients. SUMMARY OF BACKGROUND DATA: Current assessment of patient growth undergoing growth-friendly surgical treatment for EOS is the use of serial vertical spine height measurements (VH) on coronal radiographs...
September 2016: Spine Deformity
https://www.readbyqxmd.com/read/27911244/neurosurgical-management-in-lateral-meningocele-syndrome-case-report
#6
Erik C Brown, Kunal Gupta, Christina Sayama
Lateral meningocele syndrome (LMS) is a rare genetic connective tissue disorder. It is associated with morphological changes similar to those of other connective tissue disorders, with the unique distinction of multiple, often bilateral and large, lateral meningoceles herniating through the spinal foramina. In some cases, these lateral meningoceles can cause pain and discomfort due to their presence within retroperitoneal tissues or cause direct compression of the spinal nerve root exiting the foramen; in some cases compression may also involve motor weakness...
December 2, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27905881/bone-morphogenetic-protein-2-mediated-pain-and-inflammation-in-a-rat-model-of-posterolateral-arthrodesis
#7
Kendall Mitchell, Jill P Shah, Clifton L Dalgard, Lyubov V Tsytsikova, Ashley C Tipton, Anton E Dmitriev, Aviva J Symes
BACKGROUND: Bone morphogenetic protein-2 (BMP-2) is a pleiotropic, secreted molecule with diverse effects. The potent ability of BMP-2 to stimulate bone growth prompted its widespread clinical use for arthrodesis (spine fusion). However, elevated post-operative pain in patients treated with BMP-2 has been increasingly reported. Determining whether BMP-2 induces pain directly or whether it induces neuroinflammation, which could lower the threshold for pain, is important for developing therapeutic interventions...
December 1, 2016: BMC Neuroscience
https://www.readbyqxmd.com/read/27904963/10-year-follow-up-after-implantation-of-the-bryan-cervical-disc-prosthesis
#8
Joost Dejaegher, Joris Walraevens, Johannes van Loon, Frank Van Calenbergh, Philippe Demaerel, Jan Goffin
PURPOSE: Cervical arthroplasty is being used as an alternative for cervical fusion, but long-term follow-up results have rarely been reported. In this paper, we present 10-year follow-up results after implantation of the Bryan Cervical Disc Prosthesis in a single center. METHODS: 89 patients underwent implantation of a single-level Bryan Cervical Disc Prosthesis to treat radiculopathy and/or myelopathy. Clinical (Neurological Success, Neck Disability Index (NDI), Neck- and Arm-Pain, and SF-36) and radiological follow-up was prospectively organized up to 10 years after surgery...
November 30, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27902850/biomechanical-comparison-of-2-veterinary-locking-plates-to-monocortical-screw-polymethylmethacrylate-fixation-in-canine-cadaveric-cervical-vertebral-column
#9
Bianca F Hettlich, Geoffrey T Fosgate, Alan S Litsky
OBJECTIVE: To compare the biomechanical properties of 2 veterinary locking plates and monocortical screws/polymethylmethacrylate (PMMA) fixation in canine cadaveric cervical vertebral columns. STUDY DESIGN: Biomechanical cadaveric study. MATERIALS: Nineteen cervical vertebral columns (C2-C7) from large breed, skeletally mature, canine cadavers were used. A cortical ring was placed as a disk spacer at C4-C5 in all specimens. Seven vertebral columns were plated at C4-C5 with two 4-hole, 3...
November 30, 2016: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/27899142/vancomycin-microspheres-reduce-postoperative-spine-infection-in-an-in-vivo-rabbit-model
#10
Gang Liu, Si Chen, Jun Fang, Baoshan Xu, Shuang Li, Yonghong Hao, Naif A Al-Dhabi, Shucai Deng, Veeramuthu Duraipandiyan
BACKGROUND: Surgical site infections are common and devastating complications after implants related surgeries. Staphylococcus aureus contamination is a leading cause of surgical site infections. This study aims at assessing the effect of vancomycin microspheres on reducing Staphylococcus aureus infection in an in vivo rabbit model. METHODS: Sixty surgical sites of 20 New Zealand White rabbits underwent spinal implant were randomly divided to three groups: the control group, the vancomycin group and vancomycin microspheres group...
November 29, 2016: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/27896435/course-of-pelvic-lift-during-total-hip-arthroplasty
#11
Steffen Brodt, Dimitri Nowack, Linda Krakow, Christoph Windisch, Georg Matziolis
INTRODUCTION: The position of the cup makes a major contribution to the success of total hip arthroplasty (THA). In conventional implantation of the prosthesis without navigation, the surgeon relies on the spatial position of the pelvis. However, iatrogenic manipulation of the pelvis during different surgical steps constantly changes the position of the pelvis during the operation. The position of the pelvis is substantial for the correct placement of the cup. The objective of this study was to investigate and visualize the course of this pelvic lift and correlate it to certain surgical steps...
November 28, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27893663/revision-surgery-for-curve-progression-after-implant-removal-following-posterior-fusion-only-at-a-young-age-in-the-treatment-of-congenital-scoliosis-a-case-report
#12
Dong-Gune Chang, Jae Hyuk Yang, Jung-Hee Lee, Jung-Sub Lee, Seung-Woo Suh, Jin-Hyok Kim, Seung-Yeol Oh, Woojin Cho, Jong-Beom Park, Se-Il Suk
RATIONALE: Congenital scoliosis due to a hemivertebra creates a wedge-shaped deformity, which progresses and causes severe spinal deformities as an individual grows. The treatment of congenital scoliosis focuses on early diagnosis and appropriate surgical management before the development of severe deformity. PATIENT CONCERNS: We report the case of a 4-year-old male child with a left thoracolumbar scoliosis of 27° (T10-T12) due to a T11 hemivertebra who was treated by posterior fusion and pedicle screw fixation at the age of 4 years...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27888676/revision-surgery-for-cervical-artificial-disc-surgical-technique-and-clinical-results
#13
J Onken, A Reinke, J Radke, T Finger, S Bayerl, P Vajkoczy, B Meyer
OBJECTIVE: Cervical artificial disc replacement (C-ADR) was developed with the goal of preserving mobility of the cervical segment in patients with degenerative disc disease. So far, little is known about experiences with revision surgery and explantation of C-ADRs. Here, we report our experience with revision the third generation, Galileo-type disc prosthesis from a retrospective study of two institutions. PATIENTS AND METHODS: Between November 2008 and July 2016, 16 patients with prior implantation of C-ADR underwent removal of the Galileo-type disc prosthesis (Signus, Medizintechnik, Germany) due to a call back by industry...
October 31, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27886018/radiofrequency-activated-pmma-augmentation-through-cannulated-pedicle-screws-a-cadaver-study-to-determine-the-biomechanical-benefits-in-the-osteoporotic-spine
#14
T Karius, C Deborre, D C Wirtz, C Burger, A Prescher, A Fölsch, K Kabir, R Pflugmacher, H Goost
INTRODUCTION: PMMA-augmentation of pedicle screws strengthens the bone-screw-interface reducing cut-out risk. Injection of fluid cement bears a higher risk of extravasation, with difficulty of application because of inconsistent viscosity and limited injection time. OBJECTIVE: To test a new method of cement augmentation of pedicle screws using radiofrequency-activated PMMA, which is suspected to be easier to apply and have less extravasations. METHODS: Twenty-seven fresh-frozen human cadaver lumbar spines were divided into 18 osteoporotic (BMD ≤ 0...
November 18, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27879505/the-effect-of-transpedicular-screw-design-on-its-performance-in-vertebral-bone-under-tensile-loads-a-parametric-study
#15
Ron N Alkaly, Dan L Bader
STUDY DESIGN: A biomechanical study using bovine thoracolumbar spines. OBJECTIVE: To study investigated whether thread design parameters aimed at altering the state of stress at the screw-bone interface increase the screw's holding power. SUMMARY AND BACKGROUND DATA: Internal spinal fixators utilizing transpedicular screw fixation are used to achieve early stabilization of the injured spine in a range of clinical conditions. Despite advances in the design of internal spinal fixation systems, implant loosening, and catastrophic failures at the screw-bone interface remains a serious complication in adult spine surgery...
December 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27875027/tribology-of-flexible-and-sliding-spinal-implants-development-of-experimental-and-numerical-models
#16
Sophie Le Cann, Julien Chaves-Jacob, Jean-Marie Rossi, Jean-Marc Linares, Patrick Chabrand
New fusionless devices are being developed to get over the limits of actual spinal surgical treatment, based on arthrodesis. However, due to their recentness, no standards exist to test and validate those devices, especially concerning the wear. A new tribological first approach to the definition of an in vitro wear protocol to study wear of flexible and sliding spinal devices is presented in this article, and was applied to a new concept. A simplified synthetic spine portion (polyethylene) was developed to reproduce a simple supra-physiological spinal flexion (10° between two vertebrae)...
November 22, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27866452/efficacy-of-debridement-antibiotic-therapy-and-implant-retention-within-three-months-during-postoperative-instrumented-spine-infections
#17
Heidi Wille, Frédéric-Antoine Dauchy, Arnaud Desclaux, Hervé Dutronc, Marc-Olivier Vareil, Véronique Dubois, Jean-Marc Vital, Michel Dupon
BACKGROUND: Postoperative instrumented spine infection (PISI) is a severe complication of invasive spine procedures. METHODS: Retrospective study of patients treated for PISI between 1st January 2008 and 31st December 2012 in a French University Hospital. The objectives of this study were to describe the outcome of patients treated with debridement-irrigation, antibiotic therapy and implant retention (DAIR) within three months after the occurrence of PISI and to identify factors associated with relapse...
November 21, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27864682/posterior-implant-removal-in-patients-with-thoracolumbar-spine-fractures-long-term-results
#18
A J Smits, L den Ouden, A Jonkergouw, J Deunk, F W Bloemers
PURPOSE: Debate remains whether posterior implants after thoracolumbar spine fracture stabilization should be removed routinely or only in symptomatic cases. Implant related problems might be resolved or even prevented but removal includes secondary risks. The aim of this study was to evaluate safety, patient satisfaction and quality of life after implant removal. METHODS: A retrospective cohort study was performed concerning 102 patients that underwent posterior implant removal after stabilization of a traumatic thoracolumbar fracture between 2003 and 2015...
November 18, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27862237/locally-applied-simvastatin-promotes-bone-formation-in-a-rat-model-of-spinal-fusion
#19
Toshinobu Ishihara, Masashi Miyazaki, Naoki Notani, Shozo Kanezaki, Masanori Kawano, Hiroshi Tsumura
Simvastatin, an inexpensive lipid-lowering drug widely used to prevent cardiovascular disorders, is known to increase osteoblastic activity, inhibit osteoclastic activity, and stimulate osteoblastic production of bone morphogenetic protein 2. Furthermore, local simvastatin application increased bone formation in animal models of fracture or bone defects. We investigated the effect of locally applied simvastatin in a rat model of spinal fusion. We performed posterolateral lumbar fusion surgery with iliac crest autograft in 36 rats divided into group I (n = 17; implanted with a gelatin scaffold) and group II (n = 19; implanted with a gelatin scaffold infused with 0...
November 11, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27852504/bilateral-rib-based-distraction-to-the-pelvis-for-the-management-of-congenital-gibbus-deformity-in-the-growing-child-with-myelodysplasia
#20
John T Smith
BACKGROUND: Congenital gibbus deformity of the spine associated with myelodysplasia is a challenging problem in the growing child and is commonly associated with skin breakdown and chronic infection. Surgical solutions including kyphectomy, flap closure of the skin, and early spinal fusion are associated with a high rate of complications and, ultimately, a short trunk due to stoppage of spinal growth. The purpose of this article is to describe our early results in using a rib-based distraction to the pelvis without vertebral resection and fusion to manage this deformity...
January 2016: Spine Deformity
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