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https://www.readbyqxmd.com/read/28227237/fusion-of-inertial-and-magnetic-sensors-for-3d-position-and-orientation-estimation
#1
P Tadayon, T Felderhoff, A Knopp, G Staude, P Tadayon, T Felderhoff, A Knopp, G Staude, G Staude, P Tadayon, T Felderhoff, A Knopp
This paper presents a new method for 3D position and orientation estimation based on the magnetic field generated by a single coil and the fusion of low power magnetometers and inertial sensors. The fixed spatial relationship between the sensors is exploited to solve the ambiguity problem that occurs when only a single coil is employed. In this context a new positioning algorithm is developed and verified by simulations. Using a single coil instead of three coils as common in conventional magnetic field based systems brings a benefit both regarding power consumption and construction size...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226581/automatic-lumbar-vertebrae-detection-based-on-feature-fusion-deep-learning-for-partial-occluded-c-arm-x-ray-images
#2
Yang Li, Wei Liang, Yinlong Zhang, Haibo An, Jindong Tan, Yang Li, Wei Liang, Yinlong Zhang, Haibo An, Jindong Tan, Yang Li, Wei Liang, Jindong Tan, Yinlong Zhang, Haibo An
Automatic and accurate lumbar vertebrae detection is an essential step of image-guided minimally invasive spine surgery (IG-MISS). However, traditional methods still require human intervention due to the similarity of vertebrae, abnormal pathological conditions and uncertain imaging angle. In this paper, we present a novel convolutional neural network (CNN) model to automatically detect lumbar vertebrae for C-arm X-ray images. Training data is augmented by DRR and automatic segmentation of ROI is able to reduce the computational complexity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225365/magnitude-location-and-factors-related-to-regional-and-global-sagittal-alignment-change-in-long-adult-deformity-constructs-report-of-183-patients-with-2-year-follow-up
#3
Alexander A Theologis, Michael Safaee, Justin K Scheer, Virginie Lafage, Rick Hostin, Robert A Hart, Eric O Klineberg, Themistocles S Protopsaltis, Vedat Deviren, Douglas C Burton, Daniel M Sciubba, Khaled Kebaish, Shay Bess, Christopher I Shaffrey, Frank Schwab, Justin S Smith, Christopher P Ames
STUDY DESIGN: This is a retrospective review of a prospective multicenter adult spinal deformity (ASD) database. OBJECTIVE: To quantify the location and magnitude of sagittal alignment changes within instrumented and noninstrumented spinal segments and to investigate the factors associated with these changes after surgery for ASD. SUMMARY OF BACKGROUND DATA: Spinal realignment is one of the major goals in ASD surgery and changes in the alignment are common following surgical correction...
February 20, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28219364/the-relationship-between-changes-of-cervical-sagittal-alignment-after-anterior-cervical-discectomy-and-fusion-and-spino-pelvic-sagittal-alignment-under-roussouly-classification-a-four-year-follow-up-study
#4
Dong-Ning Huang, Miao Yu, Nan-Fang Xu, Mai Li, Shao-Bo Wang, Yu Sun, Liang Jiang, Feng Wei, Xiao-Guang Liu, Zhong-Jun Liu
BACKGROUND: Anterior cervical discectomy and fusion (ACDF) is widely used in the treatment of cervical degenerative disease; however, the variation of cervical sagittal alignment changes after ACDF has been rarely explored. The purpose of this study is to determine the relationship between changes of cervical sagittal alignment after ACDF and spino-pelvic sagittal alignment under Roussouly classification. METHODS: A cohort of 133 Chinese cervical spondylotic patients who received ACDF from 2011 to 2012 was recruited...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28219354/relationship-between-facet-tropism-and-facet-joint-degeneration-in-the-sub-axial-cervical-spine
#5
Xin Rong, Ziyang Liu, Beiyu Wang, Xuelin Pan, Hao Liu
BACKGROUND: Facet tropism is the angular asymmetry between the left and right facet joint orientation. Although debatable, facet tropism was suggested to be associated with disc degeneration, facet degeneration and degenerative spondylolisthesis in the lumbar spine. The purpose of this study was to explore the relationship between facet tropism and facet degeneration in the sub-axial cervical spine. METHODS: A total of 200 patients with cervical spondylosis were retrospectively analyzed...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28219305/biomechanical-comparison-between-cortical-screw-rod-construct-versus-pedicle-screw-rod-construct-in-transforaminal-lumbar-interbody-fusion
#6
Chris Chan Yin Wei, Sem Sei Haw, Elrofai Suliman Bashir, Saw Lim Beng, Rukmanikanthan Shanmugam, Kwan Mun Keong
OBJECTIVE: To compare construct stiffness of cortical screw (CS)-rod transforaminal lumbar interbody fusion (TLIF) construct (G2) versus pedicle screw (PS)-rod TLIF construct (G1) in the standardized porcine lumbar spine. METHODS: Six porcine lumbar spines (L2-L5) were separated into 12 functional spine units. Bilateral total facetectomies and interlaminar decompression were performed for all specimens. Non-destructive loading to assess stiffness in lateral bending, flexion and extension as well as axial rotation was performed using a universal material testing machine...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28216760/vanishing-bone-disease-of-chest-wall-and-spine-with-kyphoscoliosis-and-neurological-deficit-a-case-report-and-review-of-literature
#7
Sudhir Kumar Srivastava, Rishi Anil Aggarwal, Pradip Sharad Nemade, Sunil Krishna Bhoale
Vanishing bone disease is an extremely rare disorder of unknown etiology characterized by idiopathic osteolysis of bone. We describe a case of vanishing bone disease of chest wall and spine with kyphoscoliosis and neurological deficit. A 17-year-old male presented with gradually progressive deformity of back and dorsal compressive myelopathy with nonambulatory power in lower limbs. Radiographs revealed absent 4(th)-7(th) ribs on the right side with dorsal kyphoscoliosis and severe canal narrowing at the apex...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28213747/bone-morphogenetic-protein-2-for-the-treatment-of-congenital-pseudarthrosis-of-the-tibia-or-persistent-tibial-nonunion-in-children-and-adolescents-a-retrospective-study-with-a-minimum-2-year-follow-up
#8
Tim N Hissnauer, Norbert Stiel, Kornelia Babin, Martin Rupprecht, Michael Hoffmann, Johannes M Rueger, Ralf Stuecker, Alexander S Spiro
There is a lack of studies reporting on rhBMP-2 application in pediatric orthopaedics, although few reports demonstrated promising results of the use of rhBMP-2 in children, especially for spine fusion and for the treatment of congenital pseudarthrosis of the tibia. The objectives of this study were (1) to examine clinical and radiographic healing after rhBMP-2 application for the treatment of congenital pseudarthrosis of the tibia (CPT) or persistent tibial nonunion in children and adolescents, and (2) to investigate the safety of rhBMP-2 use in these cases...
April 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28213693/erratum-to-impact-of-old-age-on-patient-report-outcomes-and-cost-utility-for-anterior-cervical-discectomy-and-fusion-surgery-for-degenerative-spine-disease
#9
Silky Chotai, Scott L Parker, J Alex Sielatycki, Ahilan Sivaganesan, Harrison F Kay, Joseph B Wick, Matthew J McGirt, Clinton J Devin
No abstract text is available yet for this article.
February 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28207670/feasibility-study-of-utilization-of-action-camera-gopro-hero-4-google-glass-and-panasonic-hx-a100-in-spine-surgery
#10
Chang Kyu Lee, Youngjun Kim, Nam Lee, Byeongwoo Kim, Doyoung Kim, Seong Yi
STUDY DESIGN: Study for feasibility of commercially available action cameras in recording video of spine. OBJECTIVE: Recent innovation of the wearable action camera with high-definition video recording enables surgeons to use camera in the operation at ease without high costs. The purpose of this study is to compare the feasibility, safety, and efficacy of commercially available action cameras in recording video of spine surgery. SUMMARY OF BACKGROUND DATA: There are early reports of medical professionals using Google Glass throughout the hospital, Panasonic HX-A100 action camera, and GoPro...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207668/impact-of-obesity-on-outcomes-in-adults-undergoing-elective-posterior-cervical-fusion
#11
Kevin Phan, Parth Kothari, Nathan J Lee, Sohaib Virk, Jun S Kim, Samuel K Cho
STUDY DESIGN: Retrospective study of prospectively collected data. OBJECTIVE: To determine the effect of obesity (body mass Index > 30) on postoperative morbidity and mortality after elective posterior cervical fusion in adults. SUMMARY OF BACKGROUND DATA: In those with spine disease, obesity has been shown to portend poorer general and disease-specific functional health status. The effect of obesity on outcomes after spine surgery, especially posterior cervical fusion, however, remains unclear...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207663/role-of-ethnicity-in-alignment-compensation-propensity-matched-analysis-of-differential-compensatory-mechanism-recruitment-patterns-for-sagittal-malalignment-in-288-asd-patients-from-japan-korea-and-united-states
#12
Bassel G Diebo, Isaac Gammal, Yoon Ha, Seung Hwan Yoon, Jae Won Chang, Byeongwoo Kim, Morio Matsumoto, Yu Yamato, Daisaku Takeuchi, Naobumi Hosogane, Mitsuru Yagi, Hiroshi Taneichi, Frank Schwab, Virginie Lafage, Christopher Ames
STUDY DESIGN: Retrospective review of adult spinal deformity patients in a multiethnic database. OBJECTIVE: To investigate the role of ethnicity on recruitment of compensatory mechanisms for sagittal spinal deformity. SUMMARY OF BACKGROUND DATA: While the impacts of age, sex, and pelvic morphology on the ability to compensate for sagittal malalignment have been investigated, the role of ethnicity in compensatory mechanism recruitment is poorly understood...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28207623/feasibility-of-percutaneous-posterolateral-spinal-fusion-with-recombinant-bone-morphogenetic-protein-2-rhbmp-2-a-comparison-with-standard-methods-using-an-animal-model-study
#13
Chris Yin Wei Chan, Mun Keong Kwan, Lim Beng Saw, Hussin Paisal
BACKGROUND CONTEXT: The clinical application of recombinant bone morphogenetic protein in spinal surgery has been shown to be safe and effective. However, its use in minimally invasive spine surgery has been limited to anterior interbody fusion procedures. To date, no study has evaluated the feasibility of percutaneous posterolateral fusion in the spine utilizing recombinant bone morphogenetic protein-2 (rhBMP-2). PURPOSE: To evaluate the feasibility of percutaneous posterolateral fusion in the spine utilizing rhBMP-2...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28207619/iliac-crest-regeneration-a-retrospective-study-of-14-years-of-follow-up
#14
Anastasios Christodoulou, Achilleas Boutsiadis, Evangellos Christodoulou, Petros Antonarakos, Panagiotis Givissis, Ippokratis Hatzokos
STUDY DESIGN: This is a retrospective study analysis. OBJECTIVE: The purpose of our study was to evaluate the healing process of the ilium after being used as a bone graft donor site in the treatment of adolescent idiopathic scoliosis. SUMMARY OF BACKGROUND DATA: Iliac crest bone grafts have been proven to be the most reliable means for solid fusion in spine surgery. Nevertheless, few reports in the literature describe the ability of the iliac crest to regenerate...
March 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28205584/a-postnatal-role-for-embryonic-myosin-revealed-by-myh3-mutations-that-alter-tgf%C3%AE-signaling-and-cause-autosomal-dominant-spondylocarpotarsal-synostosis
#15
Jennifer Zieba, Wenjuan Zhang, Jessica X Chong, Kimberly N Forlenza, Jorge H Martin, Kelly Heard, Dorothy K Grange, Merlin G Butler, Tjitske Kleefstra, Ralph S Lachman, Deborah Nickerson, Michael Regnier, Daniel H Cohn, Michael Bamshad, Deborah Krakow
Spondylocarpotarsal synostosis (SCT) is a skeletal disorder characterized by progressive vertebral, carpal and tarsal fusions, and mild short stature. The majority of affected individuals have an autosomal recessive form of SCT and are homozygous or compound heterozygous for nonsense mutations in the gene that encodes the cytoskeletal protein filamin B (FLNB), but a subset do not have FLNB mutations. Exome sequence analysis of three SCT patients negative for FLNB mutations identified an autosomal dominant form of the disease due to heterozygosity for missense or nonsense mutations in MYH3, which encodes embryonic myosin...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28202380/impact-of-surgical-site-infection-and-surgical-debridement-on-lumbar-arthrodesis-a-single-institution-analysis-of-incidence-and-risk-factors
#16
Timothy Y Wang, Adam G Back, Eliza Hompe, Kevin Wall, Oren N Gottfried
This study identifies the rate of pseudarthrosis following surgical debridement for deep lumbar spine surgical site infection and identify associated risk factors. Patients who underwent index lumbar fusion surgery from 2013 to 2014 were included if they met the following criteria: 1) age >18years, 2) had debridement of deep lumbar SSI, and had 3) lumbar spine AP, lateral and flexion/extension X-rays and computed tomography (CT) at 12months or greater postoperatively. Criteria for fusion included 1) solid posterolateral, facet, or disk space bridging bone, 2) no translational or angular motion on flexion/extension X-rays, and 3) intact posterior hardware without evidence of screw lucency or breakage...
February 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28202300/multiple-concave-rib-head-resection-improved-correction-rate-of-posterior-spine-fusion-in-treatment-of-adolescent-idiopathic-scoliosis
#17
Takashi Namikawa, Hiroshi Taneichi, Satoshi Inami, Hiroshi Moridaira, Daisaku Takeuchi, Yo Shiba, Yutaka Nohara
BACKGROUND: Hybrid constructs have been widely used to surgically correct thoracic adolescent idiopathic scoliosis (AIS). To enhance the correction obtained with hybrid constructs, we perform concave rib head resection and convex costovertebral release as posterior release procedures. The objective of the study was to evaluate coronal and sagittal curve correction in patients with adolescent idiopathic scoliosis (AIS) treated with hybrid constructs combined with concave rib head resection and convex transverse process resection as posterior release procedures...
February 12, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28196468/posterior-pedicle-screw-fixation-to-treat-lower-cervical-fractures-associated-with-ankylosing-spondylitis-a-retrospective-study-of-35-cases
#18
Liang Yan, Zhenguo Luo, Baorong He, Jijun Liu, Dingjun Hao
BACKGROUND: The most common site of fractures in patients with ankylosing spondylitis (AS) is the cervical spine, especially the lower cervical spine and cervicothoracic junction. The optimal treatment for cervical spine fractures secondary to AS is controversial. This study aimed to explore the effects of posterior pedicle screw fixation alone on fractures of the lower cervical spine in patients with AS. METHODS: From January 2006 to January 2013, a total of 35 patients with AS and a lower cervical spine fracture were treated using only posterior cervical/thoracic pedicle screw fixation...
February 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28193137/risk-factors-for-adjacent-segment-degeneration-after-iliac-screw-fixation-in-lumbar-degenerative-kyphoscoliosis
#19
Sang-Il Kim, Kee-Yong Ha, Dong-Whan Suh, In-Soo Oh
PURPOSE: To analyze pre- and postoperative spinopelvic parameters and sagittal profiles in lumbar degenerative kyphoscoliosis (LDK) patients who underwent surgery using iliac screw (IS) and the incidence and risk factor of radiological adjacent segment degeneration (ASD). METHODS: A total of 32 patients, who had undergone surgical correction and lumbar/thoracolumbar fusion with pedicle screws and IS instrumentation for LDK with a minimum 2-year follow-up, were included...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28192259/impact-of-intraoperative-monitoring-during-elective-complex-spinal-fusions-%C3%A2-4-levels-on-30-day-complication-and-readmission-rates-a-single-institutional-study-of-643-adult-spinal-deformity-patients
#20
Aladine A Elsamadicy, Owoicho Adogwa, Emily Lydon, Gireesh Reddy, Rayan Kaakati, Amanda Sergesketter, Oren N Gottfried, Isaac O Karikari
OBJECTIVE: The aim of this study is to determine if there are differences in 30-day postoperative complication and readmission rates between spinal deformity patients undergoing complex spinal fusion with and without intraoperative monitoring. METHODS: The medical records of 643 adult spine deformity patients undergoing elective complex spinal fusion (≥4 levels) at a major academic institution from 2005 to 2015 were reviewed. We identified 122 (19%) cases that involved intraoperative monitoring (IOM) including EMG, SSEP, and/or TcMEP and 521 (81%) that did not (IOM: n=122; No-IOM: n=521)...
February 9, 2017: World Neurosurgery
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