keyword
MENU ▼
Read by QxMD icon Read
search

Adjacent Segment

keyword
https://www.readbyqxmd.com/read/29163192/cycling-before-and-after-exhaustion-differently-affects-cardiac-autonomic-control-during-heart-rate-matched-exercise
#1
Matthias Weippert, Martin Behrens, Anett Mau-Moeller, Sven Bruhn, Kristin Behrens
During cycling before (PRE) and after exhaustion (POST) different modes of autonomic cardiac control might occur due to different interoceptive input and altered influences from higher brain centers. We hypothesized that heart rate variability (HRV) is significantly affected by an interaction of the experimental period (PRE vs. POST) and exercise intensity (HIGH vs. LOW; HIGH = HR > HR at the lactate threshold (HRLT), LOW = HR ≤ HRLT) despite identical average HR. Methods: Fifty healthy volunteers completed an incremental cycling test until exhaustion...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29160423/comparison-of-short-segment-monoaxial-and-polyaxial-pedicle-screw-fixation-combined-with-intermediate-screws-in-traumatic-thoracolumbar-fractures-a-finite-element-study-and-clinical-radiographic-review
#2
Hongwei Wang, Yiwen Zhao, Zhongjun Mo, Jianda Han, Yu Chen, Hailong Yu, Qi Wang, Jun Liu, Changqing Li, Yue Zhou, Liangbi Xiang
OBJECTIVES: No studies have compared monoaxial and polyaxial pedicle screws with regard to the von Mises stress of the instrumentation, intradiscal pressures of the adjacent segment and adjacent segment degeneration. METHODS: Short-segment monoaxial/polyaxial pedicle screw fixation techniques were compared using finite element methods, and the redistributed T11-L1 segment range of motion, largest maximal von Mises stress of the instrumentation, and intradiscal pressures of the adjacent segment under displacement loading were evaluated...
October 2017: Clinics
https://www.readbyqxmd.com/read/29158954/the-relationship-between-segmental-rolling-ability-and-lumbar-multifidus-activation-time
#3
Nicole Clark, Michael L Voight, Ashley M Campbell, Sherry Pierce, Pat Sells, Ryan Cook, Clint Henley, Lindsey Schiller
Background: Segmental rolling has been utilized as an assessment and intervention tool to identify and affect dysfunction of the upper quarter, core, and lower quarter. One theory to explain dysfunctional segmental rolling is a lack of segmental spinal control / stabilization. Faulty muscle firing sequencing has been related to poor spinal stability, however to date, no assessment tool exists to evaluate a patient's motor coordination of local and global musculature. Purpose: The purpose of this study was to assess the temporal sequence of lumbar multifidus activation associated with anterior deltoid activation, and to determine if faulty sequencing was associated with the inability to segmentally roll in subjects without mobility restrictions...
November 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29158095/sagittal-alignment-as-predictors-of-of-adjacent-segment-disease-after-lumbar-transforaminal-inter-body-fusion
#4
Jin Sun, Hui Huang, Jun-Jie Wang, Na-Xin Fu
OBJECTIVES: The study was carried out to explore the diagnostic value of sagittal measurement for adjacent segment disease after Lumbar transforaminal inter-body fusion(TLIF). METHODS: A total of 163 subjects who adopted TLIFfor lumbar disease , were initially enrolled in the study from July 2013 to August 2017 . Sagittal alignment including thoracic inlet and pine-pelvic parameters were measured by using pre- operative full-length free-standing radiographs. Multivariate logistic regression analysis was performed to evaluate these parameters as diagnostic index for adjacent segment disease (ASD)...
November 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29148902/microsurgical-anatomy-and-approaches-around-the-lateral-recess-with-special-reference-to-entry-into-the-pons
#5
Osamu Akiyama, Ken Matsushima, Maximiliano Nunez, Satoshi Matsuo, Akihide Kondo, Hajime Arai, Albert L Rhoton, Toshio Matsushima
OBJECTIVE The lateral recess is a unique structure communicating between the ventricle and cistern, which is exposed when treating lesions involving the fourth ventricle and the brainstem with surgical approaches such as the transcerebellomedullary fissure approach. In this study, the authors examined the microsurgical anatomy around the lateral recess, including the fiber tracts, and analyzed their findings with respect to surgical exposure of the lateral recess and entry into the lower pons. METHODS Ten cadaveric heads were examined with microsurgical techniques, and 2 heads were examined with fiber dissection to clarify the anatomy between the lateral recess and adjacent structures...
November 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29145437/assessment-of-the-suitability-of-biodegradable-rods-for-use-in-posterior-lumbar-fusion-an-in-vitro-biomechanical-evaluation-and-finite-element-analysis
#6
Fon-Yih Tsuang, Yueh-Ying Hsieh, Yi-Jie Kuo, Chia-Hsien Chen, Feng-Huei Lin, Chen-Sheng Chen, Chang-Jung Chiang
Interbody fusion with posterior instrumentation is a common method for treating lumbar degenerative disc diseases. However, the high rigidity of the fusion construct may produce abnormal stresses at the adjacent segment and lead to adjacent segment degeneration (ASD). As such, biodegradable implants are becoming more popular for use in orthopaedic surgery. These implants offer sufficient stability for fusion but at a reduced stiffness. Tailored to degrade over a specific timeframe, biodegradable implants could potentially mitigate the drawbacks of conventional stiff constructs and reduce the loading on adjacent segments...
2017: PloS One
https://www.readbyqxmd.com/read/29142637/lateral-lumbar-interbody-fusion-and-in-situ-screw-fixation-for-rostral-adjacent-segment-stenosis-of-the-lumbar-spine
#7
Young Hoon Choi, Shin Won Kwon, Jung Hyeon Moon, Chi Heon Kim, Chun Kee Chung, Sung Bae Park, Won Heo
Objective: The purpose of this study is to describe the detailed surgical technique and short-term clinical and radiological outcomes of lateral lumbar interbody fusion (LLIF) and in situ lateral screw fixation using a conventional minimally invasive screw fixation system (MISF) for revision surgery to treat rostral lumbar adjacent segment disease. Methods: The medical and radiological records were retrospectively reviewed. The surgery was indicated in 10 consecutive patients with rostral adjacent segment stenosis and instability...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29142629/a-prospective-study-with-cage-only-or-cage-with-plate-fixation-in-anterior-cervical-discectomy-and-interbody-fusion-of-one-and-two-levels
#8
Sam Yeol Kim, Seung Hwan Yoon, Dokeun Kim, Chang Hyun Oh, Seyang Oh
Objective: The authors prospectively analyzed the effect of one-level or two-level anterior cervical discectomy and fusion (ACDF), comparing stand-alone cages and cage-with-plate fixation constructs with respect to clinical outcomes and radiologic changes. Methods: A total of 84 patients who underwent one-level (n=52) or two-level ACDF (n=32) for cervical disc disease and who completed 2 years of follow-up were included in this study. The patients were divided by cervical level and grouped into ACDF-Cage-only and ACDF-Cage-with-plate groups...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29142627/a-comparison-of-anterior-cervical-discectomy-and-fusion-versus-fusion-combined-with-artificial-disc-replacement-for-treating-3-level-cervical-spondylotic-disease
#9
Seo-Ryang Jang, Sang-Bok Lee, Kyoung-Suok Cho
Objective: The purpose of this study is to evaluate the efficacy and safety of 3-level hybrid surgery (HS), which combines fusion and cervical disc replacement (CDR), compared to 3-level fusionin patient with cervical spondylosis involving 3 levels. Methods: Patients in the anterior cervical discectomy and fusion (ACDF) group (n=30) underwent 3-level fusion and the HS group (n=19) underwent combined surgery with fusion and CDR. Clinical outcomes were evaluated using the visual analogue scale for the arm, the neck disability index (NDI), Odom criteria and postoperative complications...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29127511/adjacent-segment-degeneration-after-intervertebral-fusion-surgery-by-means-of-cervical-block-vertebrae
#10
Xinlong Ma, Yuren Du, Shuli Wang, Jianxiong Ma, Tao Wang, Mingjie Kuang, Baoyi Ma
BACKGROUND: The prevalence of cervical block vertebrae is unknown. Furthermore, there is no consensus on the cause of adjacent segment degeneration (ASD) after cervical fusion. QUESTIONS/PURPOSES: (1) What is the incidence of cervical block vertebrae? Is there a gender difference? (2) Among cervical block vertebrae cases, is ASD related to age and segment? And what is the specific relationship? (3) What are the imaging findings and characteristics of this disease? PATIENTS AND METHODS: We retrospectively diagnosed cervical block vertebrae cases with bony fusions in any segments of the cervical spine without intervertebral fusion surgery of 33,762 patients reported from 2006 to 2011 in north China...
November 10, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29127199/the-full-length-interleukin-33-flil33-importin-5-interaction-does-not-regulate-flil33-s-nuclear-localization-but-controls-its-intracellular-degradation
#11
Andrew Clerman, Zahid Noor, Rita Fishelevich, Virginia Lockatell, Brian S Hampton, Nirav G Shah, Mariah V Salcedo, Nevins W Todd, Sergei P Atamas, Irina G Luzina
Human mature interleukin-33 (MIL33) is a member of the IL-1 family and a potent regulator of immunity through its pro-T helper cell 2 (Th2) activity. Its precursor form, full-length interleukin-33 (FLIL33), is an intranuclear protein in many cell types, including fibroblasts, and its intracellular levels can change in response to stimuli. However, the mechanisms controlling the nuclear localization of FLIL33 or its stability in cells are not understood. Here, we identified importin-5 (IPO5), a member of the importin family of nuclear transport proteins, as an intracellular binding partner of FLIL33...
November 10, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29125430/cortical-bone-trajectory-screw-fixation-versus-traditional-pedicle-screw-fixation-for-2-level-posterior-lumbar-interbody-fusion-comparison-of-surgical-outcomes-for-2-level-degenerative-lumbar-spondylolisthesis
#12
Hironobu Sakaura, Toshitada Miwa, Tomoya Yamashita, Yusuke Kuroda, Tetsuo Ohwada
OBJECTIVE The cortical bone trajectory (CBT) screw technique is a new nontraditional pedicle screw (PS) insertion method. However, the biomechanical behavior of multilevel CBT screw/rod fixation remains unclear, and surgical outcomes in patients after 2-level posterior lumbar interbody fusion (PLIF) using CBT screw fixation have not been reported. Thus, the purposes of this study were to examine the clinical and radiological outcomes after 2-level PLIF using CBT screw fixation for 2-level degenerative lumbar spondylolisthesis (DS) and to compare these outcomes with those after 2-level PLIF using traditional PS fixation...
November 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29124006/selective-pulmonary-artery-occlusion-to-treat-hemoptysis-associated-with-pulmonary-venous-obstruction
#13
Melissa S W Yamauchi, Mary Hunt Martin, Harlan R Muntz, Ronald W Day
Hemoptysis may occur in patients with pulmonary venous obstruction and prominent decompressing vessels in the airways adjacent to the affected pulmonary veins. The options for treatment of hemoptysis are limited, particularly when efforts to alleviate pulmonary venous obstruction have failed. Here we describe a patient with hemoptysis associated with stenosis of the central left upper pulmonary vein and occlusion of the central left lower pulmonary vein. The left upper pulmonary vein was dilated with balloon catheters and a vascular plug was placed in the left lower pulmonary artery...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29124005/massive-hemoptysis-from-rasmussen-s-aneurysm-in-active-pulmonary-tuberculosis-a-case-report-of-successful-treatment-with-bronchial-artery-embolization
#14
K V Rajamannar, Hemanth Kilaru, Srujana Aravelly, Ananta Ram Gudipati, Satish Chandra Kilaru
Rasmussen's aneurysm, a very rare complication of active pulmonary tuberculosis (TB), is a pulmonary artery aneurysm adjacent to or within a tuberculous cavity. It may lead to rupture and life threatening massive hemoptysis, an uncommon but challenging medico-surgical emergency. This complication warrants attention in view of the resurgence of tuberculosis and increasing occurrence of multi-drug resistant TB, especially in resource-poor, high-TB burden countries like India. We present a case of an elderly man who presented to the emergency room with low-grade fever, cough and hemoptysis...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29121071/from-nerves-to-brain-to-gastrointestinal-tract-a-time-based-study-of-parrot-bornavirus-2-pabv-2-pathogenesis-in-cockatiels-nymphicus-hollandicus
#15
Jeann Leal de Araujo, Raquel R Rech, J Jill Heatley, Jianhua Guo, Paula R Giaretta, Ian Tizard, Aline Rodrigues-Hoffmann
Parrot bornaviruses (PaBVs) are the causative agents of proventricular dilatation disease, however key aspects of its pathogenesis, such as route of infection, viral spread and distribution, and target cells remain unclear. Our study aimed to track the viral spread and lesion development at 5, 10, 20, 25, 35, 40, 60, 80, 95 and 114 dpi using histopathology, immunohistochemistry, and RT-PCR. After intramuscular inoculation of parrot bornavirus 2 (PaBV-2) in the pectoral muscle of cockatiels, this virus was first detected in macrophages and lymphocytes in the inoculation site and adjacent nerves, then reached the brachial plexus, centripetally spread to the thoracic segment of the spinal cord, and subsequently invaded the other spinal segments and brain...
2017: PloS One
https://www.readbyqxmd.com/read/29113853/hyperkinetic-transient-ischemic-attacks-preceding-deep-ganglionic-infarction-in-a-patient-with-a-treated-parasellar-chondrosarcoma
#16
Michael W Ruff, Adip G Bhargav, Stephen W English, James P Klaas
A 44-year-old right-handed female with a past medical history of parasellar chondrosarcoma status post-surgical debulking and proton beam therapy (70 Gy) three years prior to presentation experienced several hours of brief, repetitive episodes of transient hemiballism and dystonia; this was followed by abrupt onset of fixed hemiparesis and dysarthria weeks later, ipsilateral to her prior hyperkinetic movements. She was found to have total occlusion of the right middle cerebral artery with focal stenosis of the proximal right A-1 segment of the anterior cerebral artery adjacent to the remnants of the chondrosarcoma...
November 4, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29110218/cervical-sagittal-balance-a-biomechanical-perspective-can-help-clinical-practice
#17
REVIEW
Avinash G Patwardhan, Saeed Khayatzadeh, Robert M Havey, Leonard I Voronov, Zachary A Smith, Olivia Kalmanson, Alexander J Ghanayem, William Sears
PURPOSE: In this article, we summarize our work on understanding the influence of cervical sagittal malalignment on the mechanics of the cervical spine. METHODS: Biomechanical studies were performed using an ex vivo laboratory model to study the kinematic and kinetic response of human cervical spine specimens in the setting of cervical sagittal imbalance. The model allowed controlled variations of C2-C7 Sagittal Vertical Alignment (C2-C7 SVA) and T1-Slope so that clinically relevant sagittally malaligned profiles could be prescribed, while maintaining horizontal gaze, and their biomechanical consequences studied...
November 6, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29109064/surgical-outcomes-after-segmental-limited-surgery-for-adjacent-segment-disease-the-consequences-of-makeshif
#18
Dal-Sung Ryu, Jeong-Yoon Park, Sung-Uk Kuh, Dong-Kyu Chin, Keun-Su Kim, Yong-Eun Cho, Kyung-Hyun Kim
No abstract text is available yet for this article.
November 3, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29108109/inserting-porphyrin-quantum-dots-in-bottom-up-synthesized-graphene-nanoribbons
#19
Wade Perkins, Felix Raoul Fischer
Diels-Alder copolymerization of tetrapheneylcycopenta-dienone, a precursor for cove graphene nanoribbons (cGNRs), with bifunctional porphyrins yields defined nanostructures comprised of a single cGNR-porphyrin-cGNR heterojunction within each ribbon. 13C-NMR labeling and high-resolution mass spectrometry of solubilized polymer intermediates indicates that every porphyrin is covalently linked to two extended segments of cGNRs. UV-Vis absorption and fluorescence emission spectroscopy reveal a strong electronic correlation between the porphyrin and the adjacent cGNR segments that can be attenuated through reversible metalation of the porphyrin core...
November 6, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29105726/complications-of-2-level-dynamic-stabilization
#20
Mert Ciplak, Tuncer Suzer, Salim Senturk, Onur Yaman, Mehdi Sasani, Tunc Oktenoglu, Atilla Yilmaz, Deniz Ufuk Erbulut, Ali Fahir Özer
AIM: A retrospective chart and a radiographic review. Evaluation of postoperative complications, clinical improvements and radiological parameters in patients who underwent surgery using a dynamic system for 2-level lumbar stabilization. We aimed to investigate the postoperative complications, such as screw loosening, screw breakage and ASD, in patients who underwent surgery with 2-level dynamic stabilization systems. MATERIALS AND METHODS: Dynamic lumbar systems enable the stabilization of unstable degenerative spines, while preventing fusion-related complications, such as adjacent segment disease(ASD) and pseudarthrosis...
September 25, 2017: Turkish Neurosurgery
keyword
keyword
56989
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"