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International Journal of Spine Surgery

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https://www.readbyqxmd.com/read/28765807/the-influence-of-lordotic-cages-on-creating-sagittal-balance-in-the-cmis-treatment-of-adult-spinal-deformity
#1
Neel Anand, Ryan B Cohen, Jason Cohen, Babak Kahndehroo, Sheila Kahwaty, Eli Baron
BACKGROUND: CMIS techniques are heavily dependent on placement of lateral interbody cages. Cages with an increased lordotic angle are being advocated to improve segmental lordosis and SVA. We assessed the segmental lordosis achieved with the individual cages. We further studied three variables and the effect each had on segmental lordosis: the lordosis angle of the cage, the position of the cage in the intervertebral space, and the level that it has been placed. METHODS: This is a retrospective study of 66 consecutive patients who underwent lateral interbody fusion using lordotic cages as part of CMIS correction of scoliosis from June 2012 to January 2016...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765806/contour-and-angle-function-based-scoliosis-monitoring-relaxing-the-requirement-on-image-quality-in-the-measurement-of-spinal-curvature
#2
Pierino G Bonanni
PURPOSE: A method for measuring spinal curvature that provides a useful analog to the Cobb angle and is tolerant of degraded image quality is proposed. Conventional methods require a higher standard of discernibility for vertebra features and suffer high variability. METHODS: Assumption is made that the natural representation of the spine for the purpose of scoliosis monitoring is that of a continuous curved contour rather than a series of discrete vertebral bodies with individual orientations...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765805/computer-assisted-cobb-angle-measurements-a-novel-algorithm
#3
Dean N Papaliodis, Pierino G Bonanni, Timothy T Roberts, Khalid Hesham, Nicholas Richardson, Robert A Cheney, James P Lawrence, Allen L Carl, William F Lavelle
BACKGROUND: The standard for evaluating scoliosis is PA radiographs using Cobb angle to measure curve magnitude. Newer PACS systems allow easier Cobb angle calculations, but have not improved inter/intra observer precision of measurement. Cobb angle and its progression are important to determine treatment; therefore, angle variability is not optimal. This study seeks to demonstrate that a performance equivalent to that achieved in the manual method is possible using a novel computer algorithm with limited user input...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765804/integrated-fixation-cage-loosening-under-fatigue-loading
#4
Srinidhi Nagaraja, Vivek Palepu
BACKGROUND: Screw loosening is a well-known adverse event in traditional spinal fusion instrumentation. This phenomenon may hinder segmental stability of the spine leading to bony non-union. In recent years numerous lumbar integrated fixation cages (IFC) have been introduced that offer a low profile alternative to a standard cage with an anterior plate (AP+C). The fixation approach for IFCs is different than a traditional anterior approach; therefore, it is unclear whether IFCs may loosen from the surrounding bone over time...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765803/most-cited-publications-in-cervical-spine-surgery
#5
Yu Chao Lee, Francis Brooks, Simon Sandler, Yun-Hom Yau, Michael Selby, Brian Freeman
PURPOSE: The purpose of this study is to perform a citation analysis on the most frequently cited articles in the topic of cervical spine surgery and report on the top 100 most cited publication in this topic. METHODS: We used the Thomson Reuters Web of Science to search citations of all articles from 1945 to 2015 relevant to cervical spine surgery and ranked them according to the number of citations. The 100 most cited articles that matched the search criteria were further analyzed by number of citations, first author, journal, year of publication, country and institution of origin...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765802/clinical-gait-analysis-on-a-patient-undergoing-surgical-correction-of-kyphosis-from-severe-ankylosing-spondylitis
#6
Ram Haddas, Theodore Belanger
BACKGROUND: Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the axial skeleton, including the sacroiliac joints, costovertebral joints, and the spine. Patients with AS found to have an alter gait pattern. The purpose of this study was to investigate biomechanical alterations in gait after surgical correction in a patient with severe kyphosis from AS. METHODS: A case report in controlled laboratory study, a pretest-posttest design...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765801/regression-of-disc-osteophyte-complexes-following-laminoplasty-versus-laminectomy-with-fusion-for-cervical-spondylotic-myelopathy
#7
Remi M Ajiboye, Stephen D Zoller, Adedayo A Ashana, Akshay Sharma, William Sheppard, Langston T Holly
BACKGROUND: Laminectomy with fusion (LF) and laminoplasty are two posterior-based surgical approaches for the surgical treatment of cervical spondylotic myelopathy (CSM). The decompressive effect of these approaches is thought to be primarily related to the dorsal drift of the spinal cord away from ventral compressive structures. A lesser known mechanism of spinal cord decompression following cervical LF is regression of the ventral disc osteophyte complexes which is postulated to result from the alteration of motion across the fused motion segment...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765800/fortifying-the-bone-implant-interface-part-2-an-in-vivo-evaluation-of-3d-printed-and-tps-coated-triangular-implants
#8
Regina F MacBarb, Derek P Lindsey, Shane A Woods, Peggy A Lalor, Mukund I Gundanna, Scott A Yerby
BACKGROUND: Minimally invasive surgical fusion of the sacroiliac (SI) joint using machined solid triangular titanium plasma spray (TPS) coated implants has demonstrated positive clinical outcomes in SI joint pain patients. Additive manufactured (AM), i.e. 3D-printed, fenestrated triangular titanium implants with porous surfaces and bioactive agents, such as nanocrystalline hydroxyapatite (HA) or autograft, may further optimize bony fixation and subsequent biomechanical stability. METHODS: A bilateral ovine distal femoral defect model was used to evaluate the cancellous bone-implant interfaces of TPS-coated and AM implants...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765799/fortifying-the-bone-implant-interface-part-1-an-in-vitro-evaluation-of-3d-printed-and-tps-porous-surfaces
#9
Regina F MacBarb, Derek P Lindsey, Chelsea S Bahney, Shane A Woods, Mark L Wolfe, Scott A Yerby
BACKGROUND: An aging society and concomitant rise in the incidence of impaired bone health have led to the need for advanced osteoconductive spinal implant surfaces that promote greater biological fixation (e.g. for interbody fusion cages, sacroiliac joint fusion implants, and artificial disc replacements). Additive manufacturing, i.e. 3D-printing, may improve bone integration by generating biomimetic spinal implant surfaces that mimic bone morphology. Such surfaces may foster an enhanced cellular response compared to traditional implant surfacing processes...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765798/bilateral-c5-motor-palsy-after-anterior-cervical-decompression-and-fusion-a-case-report-and-review-of-the-literature
#10
Steven M Andelman, Steven J McAnany, Sheeraz A Qureshi, Andrew C Hecht
BACKGROUND: Bilateral C5 motor palsy is a rare but potentially debilitating complication after cervical spine decompression with very few reports in the published literature. PURPOSE: To present a case of bilateral C5 motor palsy after anterior cervical decompression and fusion and discuss the incidence and risk factors of this complication. STUDY DESIGN/SETTING: We report a case of a 57-year-old male who underwent a three level C3-C6 anterior cervical discectomy and fusion with instrumentation who developed a postoperative bilateral C5 motor palsy...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765797/radiographic-analysis-of-cervical-and-spinal-alignment-in-multilevel-acdf-with-lordotic-interbody-device
#11
Yoshihiro Katsuura, Alex Lemons, Eileen Lorenz, Rachel Swafford, James Osborn, Garrick Cason
BACKGROUND: Restoration and maintenance of cervical lordosis is an important clinical parameter in spine surgery. The purpose of this study was to determine the extent to which a multilevel anterior cervical discectomy and fusion (ACDF: greater than 3 levels) procedure restores cervical lordosis and the affect of increasing lordosis on sagittal vertical axis. METHODS: We performed a retrospective radiographic analysis of 69 patients who underwent multilevel ACDF by 2 surgeons between 2013 and 2014...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765796/the-effects-of-topical-vancomycin-on-mesenchymal-stem-cells-more-may-not-be-better
#12
Stacey Chu, Nita Chen, Alexis B C Dang, Alfred C Kuo, Alan B C Dang
BACKGROUND: The use of topical vancomycin is increasingly popular in spine surgery. Large retrospective reviews suggest that topical vancomycin provides a cost-effective decrease in post-operative infection. Currently, there is little that is known about the maximum dose that can be applied locally. When 1 gram of vancomycin is mixed into the bone graft and another 1 gram applied freely in a spine wound, the local concentration of antibiotic ranges from 260-2900 μg/mL in the immediate post-op period and 50-730 μg/mL by the second post-operative day...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765795/inpatient-versus-outpatient-anterior-cervical-discectomy-and-fusion-a-perioperative-complication-analysis-of-259-414-patients-from-the-healthcare-cost-and-utilization-project-databases
#13
Shearwood McClelland Iii, Peter G Passias, Thomas J Errico, R Shay Bess, Themistocles S Protopsaltis
BACKGROUND: Anterior cervical discectomy and fusion (ACDF) is one of the most common operations utilized to address pathology of the cervical spine. Few reports have attempted to compare complications associated with inpatient versus outpatient ACDF. METHODS: The Nationwide Inpatient Sample (NIS) from 2001-2012 and the State Ambulatory Services Database (SASD) for New Jersey (NJ) from 2003-2012 were used for analysis. Patients receiving ACDF (defined as anterior cervical fusion (ICD-0 code=81...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28765794/diabetes-as-an-independent-predictor-for-extended-length-of-hospital-stay-and-increased-adverse-post-operative-events-in-patients-treated-surgically-for-cervical-spondylotic-myelopathy
#14
Nancy Worley, John Buza, Cyrus M Jalai, Gregory W Poorman, Louis M Day, Shaleen Vira, Shearwood McClelland Iii, Virginie Lafage, Peter G Passias
BACKGROUND: Diabetes as an independent driver of peri-operative outcomes, and whether its severity impacts indications is conflicted in the research. The purpose of this study is to evaluate diabetes as a predictor for postoperative outcomes in cervical spondylotic myelopathy (CSM) patients. METHODS: A retrospective review was performed of patients treated surgically for CSM (ICD-9 721.1) from 2010-2012 in the prospectively-collected American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28377867/effect-of-perioperative-steroids-on-dysphagia-after-anterior-cervical-spine-surgery-a-systematic-review
#15
Abidemi S Adenikinju, Sameer H Halani, Rima S Rindler, Matthew F Gary, Keith W Michael, Faiz U Ahmad
BACKGROUND: Dysphagia following anterior cervical spine surgery is common. Steroids potentially reduce post-operative inflammation that leads to dysphagia; however, the efficacy, optimal dose and route of steroid administration have not been fully elucidated. OBJECTIVE: The purpose of this systematic review is to evaluate the effect of peri-operative steroids on the incidence and severity of dysphagia following anterior cervical spine surgery. METHODS: A PubMed search adherent to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines was performed to include clinical studies reporting use of steroids in adult patients following anterior cervical spine surgery...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28377866/revision-of-minimally-invasive-sacroiliac-joint-fixation-technical-considerations-and-case-studies-using-decortication-and-threaded-implant-fixation
#16
Brett MenMuir, Louis C Fielding
BACKGROUND: Sacroiliac joint (SIJ) disease is increasingly recognized as a common source of low back pain. Arthrodesis of the SIJ has been shown to be clinically effective for this condition. In the last decade, minimally invasive (MI) SIJ fusion procedures have been developed to achieve the clinical effectiveness of open fusion procedures, with lower operative morbidity and faster recovery. However, SIJ fusion patients occasionally present with symptomatic nonunions necessitating revision...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28377865/regional-variations-in-shear-strength-and-density-of-the-human-thoracic-vertebral-endplate-and-trabecular-bone
#17
Fred Xavier, Julio J Jauregui, Nathan Cornish, Rebecca Jason-Rousseau, Dipal Chatterjee, Gavriel Feuer, Westley Hayes, Bhaveen H Kapadia, John N Carter, Hiroyuki Yoshihara, Subrata Saha
BACKGROUND: Previous studies investigated the overall mechanical strength of the vertebral body; however, limited information is available on the biomechanical properties of different regions within the vertebral endplate and cancellous bone. In addition, the correlation between mechanical strength and various density measurements has not been studied yet. METHODS: Thoracic (T10) vertebrae were harvested from fifteen human cadaveric spines (average age: 77 years old)...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28377864/open-door-laminoplasty-creation-of-a-new-vertebral-arch
#18
Monica Lara-Almunia, Javier Hernandez-Vicente
BACKGROUND: We describe the carrying out of our open door laminoplasty technique by reproducing a posterior vertebral arch using a local originating autologous bony graft and titanium plates. METHODS: We designed a prospective study and present our first 16 patients. The clinical results were evaluated with the JOA score, Nurick scale and the VAS. The functional and radiological evaluation was performed with radiographs, CT and MRI, and the measurements of the dimensions of the spinal canal were carried out with the MIPAV programme ( Johns Hopkins University)...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28377863/surgical-revision-after-sacroiliac-joint-fixation-or-fusion
#19
Katie Spain, Timothy Holt
BACKGROUND: Minimally invasive sacroiliac joint (SIJ) fusion has been shown to be safe and effective for the treatment of SIJ dysfunction. Multiple devices are available to perform SIJ fixation or fusion. Surgical revision rates after these procedures have not been directly compared. METHODS: We retrospectively identified all patients in our practice who underwent SIJ fixation or fusion between 2003 and 2015. Using both chart review and focused contact with individual patients, we determined the likelihood of surgical revision...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28377862/arthrodesis-rate-and-patient-reported-outcomes-after-anterior-lumbar-interbody-fusion-utilizing-a-plasma-sprayed-titanium-coated-peek-interbody-implant-a-retrospective-observational-analysis
#20
Joseph A Sclafani, Sophea R Bergen, Miranda Staples, Kevin Liang, Ramin Raiszadeh
BACKGROUND: Anterior lumbar interbody fusion (ALIF) is utilized in symptomatic spinal disc destabilization due to degenerative lumbar disc disease, isthmic and degenerative spondylolisthesis, internal disc disruption, or pseudarthrosis after non-operative treatments fail. The addition of a plasma-sprayed titanium coating (PTC) to polyether ether ketone spacers (PEEK) may reduce the rate of implant subsidence or non-union secondary to poor osseous-integration of non-coated PEEK or metal interbody systems...
2017: International Journal of Spine Surgery
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