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https://www.readbyqxmd.com/read/28816896/factors-associated-with-adverse-events-in-inpatient-elective-spine-knee-and-hip-orthopaedic-surgery
#1
Dov B Millstone, Anthony V Perruccio, Elizabeth M Badley, Y Raja Rampersaud
BACKGROUND: Orthopaedic procedures for degenerative musculoskeletal conditions (predominantly osteoarthritis and spinal stenosis) represent an increasing burden on the health-care system. These procedures are also associated with adverse event rates and related cost. The objective of this study was to identify risk factors for adverse events associated with orthopaedic surgeries as captured within a common clinical point-of-care system for documenting adverse events (Orthopaedic Surgical AdVerse Events Severity [OrthoSAVES] system)...
August 16, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28816880/management-of-hangman-s-fractures-a-systematic-review
#2
Hamadi Murphy, Gregory D Schroeder, Weilong J Shi, Christopher K Kepler, Mark F Kurd, Andrew N Fleischman, Frank Kandziora, Jens R Chapman, Lorin M Benneker, Alexander R Vaccaro
BACKGROUND: Traumatic spondylolisthesis of the axis, is a common cervical spine fracture; however, to date there is limited data available to guide the treatment of these injuries. The purpose of this review is to provide an evidence-based analysis of the literature and clinical outcomes associated with the surgical and nonsurgical management of hangman's fractures. METHODS: A systematic literature search was conducted using PubMed (MEDLINE) and Scopus (EMBASE, MEDLINE, COMPENDEX) for all articles describing the treatment of hangman's fractures in 2 or more patients...
September 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28813547/an-experimental-and-numerical-study-of-hybrid-iii-dummy-response-to-simulated-underbody-blast-impacts
#3
Karthik Somasundaram, Anil Kalra, Don Sherman, Paul Begeman, King H Yang, John M Cavanaugh
Anthropometric test devices (ATDs) such as Hybrid III dummy have been widely used in automotive crash tests to evaluate the risks of injury at different body regions. In recent years, researchers have started using automotive ATDs to study the high-speed vertical loading response caused by underbelly blast (UBB) impacts. This study analyzed the Hybrid III dummy responses to short-duration large magnitude vertical acceleration in a laboratory setup. Two unique test conditions were investigated using a horizontal sled system to simulate the UBB loading conditions...
August 16, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28801863/pedicle-screw-fixation-in-thoracolumbar-and-lumbar-spine-assisted-by-lateral-fluoroscopic-imaging-a-study-to-evaluate-the-accuracy-of-screw-placement
#4
S P Mohanty, S N Bhat, M Pai Kanhangad, G S Gosal
BACKGROUND: The purpose of this study was to evaluate the accuracy of pedicle screw placement, its advantages, and limitations in posterior instrumentation of thoracolumbar and lumbar burst fractures assisted only by lateral fluoroscopic imaging. MATERIALS AND METHODS: Pre- and postoperative computerized tomographic (CT) scans of 117 patients with thoracolumbar and lumbar burst fractures, who underwent posterior instrumentation with pedicle screw fixation, were prospectively analyzed...
August 11, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28800928/post-operative-bracing-after-pedicle-screw-fixation-for-thoracolumbar-burst-fractures-a-cost-effectiveness-study
#5
REVIEW
Matthew Piazza, Saurabh Sinha, Prateek Agarwal, Arka Mallela, Nikhil Nayak, James Schuster, Sherman Stein
PURPOSE: While frequently prescribed to patients following fixation for spine trauma, the utility of spinal orthoses during the post-operative period is poorly described in the literature. In this study, we calculated rates of reoperation and performed a decision analysis to determine the utility of bracing following pedicle screw fixation for thoracic and lumbar burst fractures. METHODS: Pubmed was searched for articles published between 2005 and 2015 for terms related to pedicle screw fixation of thoracolumbar fractures...
August 8, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28789999/trends-in-the-surgical-management-of-odontoid-fractures-in-patients-above-75-years-of-age-retrospective-study-of-70-cases
#6
A Faure, T Graillon, S Pesenti, P Tropiano, B Blondel, S Fuentes
BACKGROUND: Odontoid fractures are the most common upper cervical spine fracture in adults over 70 years of age. Hence, treatment of these fractures has public health implications. OBJECTIVES: Evaluate the early complications, bone healing and mortality in patients above 75 years of age who undergo surgical treatment of an odontoid fracture. Compare the results between patients operated with the Harms technique or anterior screw fixation. METHODS: This was a retrospective study of 70 patients with an odontoid fracture who were treated surgically between 2000 and 2015 at the Hôpital de la Timone in France...
August 5, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28777277/comparison-of-ponte-osteotomies-and-3-column-osteotomies-in-the-treatment-of-congenital-spinal-deformity
#7
Priscella Chan, Lindsay M Andras, Ena Nielsen, Ted Sousa, Elizabeth Joiner, Paul D Choi, Vernon T Tolo, David L Skaggs
BACKGROUND: Congenital spinal deformity (CSD) has traditionally been treated with 3-column osteotomies [hemivertebrectomy (HV) or vertebral column resection (VCR)] to address rigid deformities. Alternatively, multiple Ponte osteotomies (PO) may provide correction while minimizing risk. The purpose of this study was to compare safety and outcomes of patients undergoing surgical treatment for CSD with these 3 procedures. METHODS: Retrospective review of CSD patients treated with posterior spinal fusion between 1996 to 2013...
August 2, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28777153/a-diagnostic-pitfall-atypical-teratoid-rhabdoid-tumor-versus-dedifferentiated-poorly-differentiated-chordoma-analysis-of-a-mono-institutional-series
#8
Anna Maria Buccoliero, Chiara Caporalini, Mirko Scagnet, Gianna Baroni, Selene Moscardi, Federico Mussa, Flavio Giordano, Iacopo Sardi, Lorenzo Genitori
Atypical teratoid/rhabdoid tumor (AT/RT) and dedifferentiated/poorly differentiated chordoma are pediatric tumors with some overlapping morphologic, immunohistochemical, and molecular features. Both these tumors have alterations in the tumor suppressor gene SMARCB1 resulting in loss of expression of the INI-1 protein. On the contrary, dedifferentiated/poorly differentiated chordoma expresses the transcription factor brachyury, whereas AT/RT does not. In this article we have reviewed the clinicopathologic features of a pediatric series of tumors (17 samples from 14 patients) located in the brain or within the axial spine and the base of the skull diagnosed as AT/RTs or as dedifferentiated/poorly differentiated chordomas...
August 2, 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/28777023/impact-of-neurosurgeon-specialization-on-patient-outcomes-for-intracranial-and-spinal-surgery-a-retrospective-analysis-of-the-nationwide-inpatient-sample-1998-2009
#9
Brandon A McCutcheon, Brian R Hirshman, Brandon C Gabel, Michael W Heffner, Logan P Marcus, Tyler S Cole, Clark C Chen, David C Chang, Bob S Carter
OBJECTIVE The subspecialization of neurosurgical practice is an ongoing trend in modern neurosurgery. However, it remains unclear whether the degree of surgeon specialization is associated with improved patient outcomes. The authors hypothesized that a trend toward increased neurosurgeon specialization was associated with improved patient morbidity and mortality rates. METHODS The Nationwide Inpatient Sample (NIS) was used (1998-2009). Patients were included in a spinal analysis cohort for instrumented spine surgery involving the cervical spine ( International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] codes 81...
August 4, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28769719/the-subgenus-monotarsobius-in-the-iberian-peninsula-with-a-description-of-a-new-pseudo-cryptic-species-from-northern-spain-revealed-by-an-integrative-revision-of-lithobius-crassipes-l-koch-1862-chilopoda-lithobiomorpha-lithobiidae
#10
Karin Voigtländer, Etienne Iorio, Peter Decker, Jörg Spelda
The widespread European centipede species Lithobius (Monotarsobius) crassipes L. Koch, 1862 was revised using an integrative approach incorporating sequence data and morphology. The partial mitochondrial cytochrome c oxidase subunit I (COI) barcoding gene was amplified and sequenced for 21 individuals from northern Spain, France and Germany as well as for individuals of three other species of the subgenus Monotarsobius Verhoeff, 1905. The dataset was used for molecular phylogenetic analysis and genetic distance determination...
2017: ZooKeys
https://www.readbyqxmd.com/read/28767638/low-bone-mineral-density-is-a-significant-risk-for-proximal-junctional-failure-after-surgical-correction-of-adult-spinal-deformity-a-propensity-score-matched-analysis
#11
Mitsuru Yagi, Nobuyuki Fujita, Osahiko Tsuji, Narihito Nagoshi, Takashi Asazuma, Ken Ishii, Masaya Nakamura, Morio Matsumoto, Kota Watanabe
STUDY DESIGN: A propensity-matched comparison of risk factors for proximal junctional failure (PJF), which is a symptomatic proximal junctional kyphosis developing after corrective surgery for adult spinal deformity (ASD). OBJECTIVE: To elucidate the role of bone strength for developing PJF. SUMMARY OF BACKGROUND DATA: PJF, a devastating complication of corrective surgery for ASD, often recurs even after revision surgery. Most studies of risk factors for PJF are retrospective and have a selection bias in surgical strategy, making it difficult to identify modifiable PJF risk factors...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28767625/patient-reported-outcomes-and-costs-associated-with-revision-surgery-for-degenerative-cervical-spine-diseases
#12
Elliott J Kim, Silky Chotai, Joseph B Wick, David P Stonko, Ahilan Sivaganesan, Clinton J Devin
STUDY DESIGN: Retrospective review of a prospective database. OBJECTIVE: Determine cost and outcomes of revision cervical spine surgery. SUMMARY OF BACKGROUND DATA: Revision rates for cervical spine surgery are steadily increasing. It is important to counsel patients on expected results following a revision procedure. However, outcomes and cost of these procedures are poorly defined in the literature. METHODS: Patients undergoing revision cervical spine surgery at a single institution were included between October 2010 and January 2016 in a prospective registry database...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28766001/dynamic-contrast-enhanced-magnetic-resonance-imaging-parameters-correlate-with-advanced-revised-iss-and-angiopoietin-1-angiopoietin-2-ratio-in-patients-with-multiple-myeloma
#13
Evangelos Terpos, Dimitris Matsaridis, Vassilis Koutoulidis, Flora Zagouri, Dimitrios Christoulas, Sophia Fontara, Evangelia Panourgias, Maria Gavriatopoulou, Efstathios Kastritis, Meletios A Dimopoulos, Lia A Moulopoulos
The aim of the study was to assess the value of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in patients with newly diagnosed multiple myeloma (MM) who were treated with novel anti-myeloma agents. We studied 60 previously untreated MM patients at diagnosis, 14 with smoldering MM (SMM) and 5 with MGUS. All patients underwent MRI of the thoracolumbar spine and pelvis before the administration of any kind of therapy, and DCE-MRI was performed. The MRI perfusion parameters evaluated were wash-in (WIN), washout (WOUT), time-to-peak (TTPK), time-to-maximum slope (TMSP), and the WIN/TMSP ratio...
August 1, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28760028/correction-of-severe-spinopelvic-mismatch-decreased-blood-loss-with-lateral-hyperlordotic-interbody-grafts-as-compared-with-pedicle-subtraction-osteotomy
#14
Jean-Christophe Leveque, Vijay Yanamadala, Quinlan D Buchlak, Rajiv K Sethi
OBJECTIVE Pedicle subtraction osteotomy (PSO) provides extensive correction in patients with fixed sagittal plane imbalance but is associated with high estimated blood loss (EBL). Anterior column realignment (ACR) with lateral graft placement and sectioning of the anterior longitudinal ligament allows restoration of lumbar lordosis (LL). The authors compare peri- and postoperative measures in 2 groups of patients undergoing correction of a sagittal plane imbalance, either through PSO or the use of lateral lumbar fusion and ACR with hyperlordotic (20°-30°) interbody cages, with stabilization through standard posterior instrumentation in all cases...
August 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28746123/a-change-in-lumbar-sagittal-alignment-after-single-level-anterior-lumbar-interbody-fusion-for-lumbar-degenerative-spondylolisthesis-with-normal-sagittal-balance
#15
Chi Heon Kim, Chun Kee Chung, Sung Bae Park, Seung Heon Yang, Jung-Hee Kim
STUDY DESIGN: Retrospective analysis. OBJECTIVE: The object is to assess the correlation between whole lumbar lordosis (LL) and the segmental angle (SA) after single-level anterior lumbar interbody fusion for degenerative lumbar spondylolisthesis. SUMMARY OF BACKGROUND DATA: The restoration of the SA at lower lumbar spine is meaningful, considering it contributes approximately 60% of LL, and revision surgery due to flat back or adjacent segment pathology was necessary decades after the initial surgery...
August 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28735464/radiation-dose-reduction-in-thoracic-and-lumbar-spine-instrumentation-using-navigation-based-on-an-intraoperative-cone-beam-ct-imaging-system-a-prospective-randomized-clinical-trial
#16
Nathalie Pireau, Virginie Cordemans, Xavier Banse, Nadia Irda, Sébastien Lichtherte, Ludovic Kaminski
PURPOSE: Spine surgery still remains a challenge for every spine surgeon, aware of the potential serious outcomes of misplaced instrumentation. Though many studies have highlighted that using intraoperative cone beam CT imaging and navigation systems provides higher accuracy than conventional freehand methods for placement of pedicle screws in spine surgery, few studies are concerned about how to reduce radiation exposure for patients with the use of such technology. One of the main focuses of this study is based on the ALARA principle (as low as reasonably achievable)...
July 22, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28727709/transforaminal-percutaneous-endoscopic-discectomy-and-foraminoplasty-after-lumbar-spinal-fusion-surgery
#17
Jian-Jun Wu, Hui-Zhen Chen, Changkun Zheng
BACKGROUND: The most common causes of pain following lumbar spinal fusions are residual herniation, or foraminal fibrosis and foraminal stenosis that is ignored, untreated, or undertreated. The original surgeon may advise his patient that nothing more can be done in his opinion that the nerve was visually decompressed by the original surgery. Post-operative imaging or electrophysiological assessment may be inadequate to explain all the reasons for residual or recurrent symptoms. Treatment of failed lumbar spinal fusions by repeat traditional open revision surgery usually incorporates more extensive decompression causing increased instability and back pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28726010/robot-guidance-for-percutaneous-minimally-invasive-placement-of-pedicle-screws-for-pyogenic-spondylodiscitis-is-associated-with-lower-rates-of-wound-breakdown-compared-to-conventional-fluoroscopy-guided-instrumentation
#18
Awad Alaid, Kajetan von Eckardstein, Nicolas Roydon Smoll, Volodymyr Solomiichuk, Veit Rohde, Ramon Martinez, Bawarjan Schatlo
Postoperative wound healing can pose a problem in patients undergoing instrumented surgery for pyogenic spondylodiscitis. Robotic guidance allows the minimally invasive placement of pedicle screws in the thoracolumbar spine. We assessed whether using this technique to perform minimally invasive surgery had an impact on wound healing in patients with pyogenic spondylodiscitis when compared to conventional open fluoroscopy-guided surgery. We reviewed charts of 206 consecutive patients who underwent instrumentation for pyogenic spondylodiscitis...
July 20, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28700387/treatment-of-recurrent-lumbar-disc-herniation-with-or-without-fusion-in-workers-compensation-subjects
#19
Jeffrey A O'Donnell, Joshua T Anderson, Arnold R Haas, Rick Percy, Stephen T Woods, Uri M Ahn, Nicholas U Ahn
STUDY DESIGN: Retrospective cohort study. OBJECTIVE: To determine outcomes after reoperation discectomy with or without fusion surgery for recurrent lumbar disc herniation (RLDH) in the workers' compensation (WC) population. SUMMARY OF BACKGROUND DATA: RLDH is estimated to occur in 7% to 24% of patients after discectomy. There are two main surgical options after reherniation: a revision discectomy (RD), or an RD combined with fusion (RDF)...
July 15, 2017: Spine
https://www.readbyqxmd.com/read/28698941/spine-rod-straightening-as-a-possible-cause-for-revision
#20
Reed Ayers, Mathew Hayne, Evalina Burger
In a previous study, the authors examined the elastic and short-term anelastic springback of Ti6Al4V, CoCrMoC and A316L stainless steel spine rods to observe how the rods mechanically respond in OR contouring. In that study rods were 200 mm long and only the movement at the tip was recorded. The implication of that work was that rods will straighten in-vivo, however, in order for the mechanism of straightening to be determined, the movement of individual bends over time must first be elucidated. Spine rods used were, commercially pure titanium (CP Ti) a primarily α-phase; Ti-6Al-4V; α/β-phase titanium alloy from two different suppliers (denoted by, Ti-6Al-4V (L) and Ti-6Al-4V); β-phase titanium (TNTZ) and CoCrMoC...
August 2017: Journal of Materials Science. Materials in Medicine
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