99951
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Genome-Wide Identification of Long Noncoding RNAs in Human Intervertebral Disc Degeneration by RNA Sequencing. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3684875. [PMID: 28097131 PMCID: PMC5206422 DOI: 10.1155/2016/3684875] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 11/24/2016] [Indexed: 01/07/2023]
Abstract
Long noncoding RNAs (lncRNAs) are emerging as crucial players in a myriad of biological processes. However, the precise mechanism and functions of most lncRNAs are poorly characterized. In this study, we presented genome-wide identification of lncRNAs in the patients with intervertebral disc degeneration (IDD) and spinal cord injury (control) using RNA sequencing (RNA-seq). A total of 124.6 million raw reads were yielded using Hiseq 2500 platform and approximately 88% clean reads could be aligned to human reference genome in both IDD and control groups. RNA-seq profiling indicated that 1,854 lncRNAs were differentially expressed (log2 fold change ≥ 1 or ≤−1, p < 0.05), in which 1,530 could potentially target 6,386 genes via cis-regulatory effects. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis for these target genes suggested that lncRNAs were involved in diverse pathways, such as lysosome, focal adhesion, and MAPK signaling. In addition, a competing endogenous RNA (ceRNA) network was constructed for analyzing the function of lncRNAs. Further, quantitative real time PCR (qRT-PCR) was used to confirm the differentially expressed lncRNAs and ceRNA network. In conclusion, our results present the first global identification of lncRNAs in IDD and may provide candidate diagnostic biomarkers for IDD treatment.
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99952
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Takao T, Kubota K, Maeda T, Okada S, Morishita Y, Mori E, Yugue I, Kawano O, Sakai H, Ueta T, Shiba K. A radiographic evaluation of facet sagittal angle in cervical spinal cord injury without major fracture or dislocation. Spinal Cord 2016; 55:515-517. [DOI: 10.1038/sc.2016.172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 10/29/2016] [Accepted: 10/30/2016] [Indexed: 11/09/2022]
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99953
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Hoff M, Kähäri K. A Swedish cross-cultural adaptation and validation of the Tinnitus Functional Index. Int J Audiol 2016; 56:277-285. [DOI: 10.1080/14992027.2016.1265154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Maria Hoff
- Unit of Audiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden and
- Habilitation and Health, Hearing Organization, Region Västra Götaland, Sweden
| | - Kim Kähäri
- Unit of Audiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden and
- Habilitation and Health, Hearing Organization, Region Västra Götaland, Sweden
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99954
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López-de-Uralde-Villanueva I, Muñoz-García D, Gil-Martínez A, Pardo-Montero J, Muñoz-Plata R, Angulo-Díaz-Parreño S, Gómez-Martínez M, La Touche R. A Systematic Review and Meta-Analysis on the Effectiveness of Graded Activity and Graded Exposure for Chronic Nonspecific Low Back Pain. PAIN MEDICINE 2016; 17:172-88. [PMID: 26235368 DOI: 10.1111/pme.12882] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Our aim was to systematically review and meta-analyze the effectiveness of graded activity (GA) or graded exposure (GEXP) for chronic nonspecific low back pain (CNSLBP). METHODS A literature search of multiple databases (MEDLINE, EMBASE, PEDro, CINAHL, and PsychINFO) was conducted to identify randomized control trials (RCTs). Standardized mean difference (SMD) and 95% confidence intervals (CI) were calculated for relevant outcome measures (pain intensity, disability, quality of life, and catastrophizing). RESULTS Thirteen RCTs met the inclusion criteria. Only nine studies were included in the meta-analysis. GA was significantly more effective than the control group (CG) for improvements in disability in the short term (three studies: n = 254, SMD = -0.3, 95% CI -0.55 to -0.05, P = 0.02) and long term (two studies: n = 238, SMD = -0.53, 95% CI -0.79 to -0.27, P < 0.0001). GA was significantly less effective than GEXP for the improvement of disability in the short term (two studies: n = 105, SMD = 0.39, 95% CI 0.003-0.78, P = 0.048). GA was also significantly less effective than GEXP at improving catastrophizing in the short term (two studies: n = 105, SMD = 0.48, 95% CI 0.09-0.87, P = 0.02). CONCLUSION Limited evidence has been found to show that GA significantly reduces disability in the short and long term when compared with the CG in CNSLBP. There is moderate evidence that GEXP more effectively decreases catastrophizing than GA in the short term. No difference was found between GA and other exercise for any variable.
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99955
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Giordano AV, Arrigoni F, Bruno F, Carducci S, Varrassi M, Zugaro L, Barile A, Masciocchi C. Interventional Radiology Management of a Ruptured Lumbar Artery Pseudoaneurysm after Cryoablation and Vertebroplasty of a Lumbar Metastasis. Cardiovasc Intervent Radiol 2016; 40:776-779. [DOI: 10.1007/s00270-016-1551-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/14/2016] [Indexed: 01/11/2023]
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99956
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Li X, En H, Zhang Y, Gao S, Li G, Guo Y, Wang X, Wang H, Cai Y, Wang Z, Li Z, Li C, Zhao F. Digital Anatomical Measurement for Anterolateral Fixation of Middle and Lower Thoracic Vertebrae. Med Sci Monit 2016; 22:5021-5027. [PMID: 27997524 PMCID: PMC5193122 DOI: 10.12659/msm.899062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background The key to its successful application is to determine the best entry point for the vertebral screw(s). This study aimed to provide a reference for clinical anterolateral fixation through digital measurement of computed tomography (CT) data to identify relevant anatomical positions in the middle and lower thoracic vertebrae (T4–T12) of 30 adults. Material/Methods We performed digital measurement of anatomical positions in the middle and lower thoracic vertebrae (T4–T12) of 30 adults. Abbreviations: Left height of vertebral body, LHV; Right height of vertebral body, RHV; Anterior height of vertebral body, AHV; Middle height of vertebral body, MHV; Posterior height of vertebral body, PHV; Superior sagittal diameter of vertebral body, SSDV; Superior transverse diameter of vertebral body, STDV; inferior sagittal diameter of vertebral body, ISDV; Inferior transverse diameter of vertebral body, ITDV; (1) Left (right) height of vertebral body, [L(R)HV]; Anterior (middle, posterior) height of vertebral body [A(M,P)HV]; Superior (inferior) sagittal diameter of vertebral body, [S(I)SDV]; Superior (inferior) transverse diameter of vertebral body, [S(I)TDV]. Results The transverse diameters of vertebral bodies were always larger than the sagittal diameter for 3~4 mm. The distance between 2 vertebrae (interval of 1 vertebra) range were (52–56) mm for T4–T7 and (44–48) mm for T8–T12, and the surgeons could collate these data to choose a suitable stick length. Conclusions Bone graft should prune into laterigrade cuboid, it can recover A-P and bilateral physiological functions load, and the height of the vertebral body increased from T4 to T12.
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Affiliation(s)
- Xiaohe Li
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - He En
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Yunfeng Zhang
- Department of CT, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Shang Gao
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Guimin Li
- The First Clinical College of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Yu Guo
- The First Clinical College of Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Xin Wang
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Haiyan Wang
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Yongqiang Cai
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Zhiqiang Wang
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Zhijun Li
- Department of Anatomy, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Cunbao Li
- Department of Biochemistry, Basic Medical College, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China (mainland)
| | - Feifei Zhao
- Department of Ear-Nose-Throat, Affiliated Hospital of Inner Mongolia Medical University, Huhhot, Inner Mongolia, China (mainland)
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99957
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Berliner E. Multisociety Letter to the Agency for Healthcare Research and Quality: Serious Methodological Flaws Plague Technology Assessment on Pain Management Injection Therapies for Low Back Pain. PAIN MEDICINE 2016; 17:10-5. [PMID: 26400156 DOI: 10.1111/pme.12934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 08/26/2015] [Indexed: 11/27/2022]
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99958
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The developing landscape of diagnostic and prognostic biomarkers for spinal cord injury in cerebrospinal fluid and blood. Spinal Cord 2016; 55:114-125. [DOI: 10.1038/sc.2016.174] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 10/14/2016] [Accepted: 10/31/2016] [Indexed: 01/31/2023]
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99959
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Zhang L, Wu X, Di H, Feng T, Wang Y, Wang J, Cao X, Li B, Liu R, Yu S. Characteristics of Headache After an Intracranial Endovascular Procedure: A Prospective Observational Study. Headache 2016; 57:391-399. [PMID: 27991669 DOI: 10.1111/head.13006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 10/26/2016] [Accepted: 10/26/2016] [Indexed: 01/03/2023]
Abstract
BACKGROUND Two editions of the International Classification of Headache Disorders (ICHD) diagnostic criteria for "Headache attributed to an intracranial endovascular procedure" have been published, in 2004 and 2013.1,2 Despite studies that have suggested that the former is not very practical, the ICHD-3 beta did not contain major changes. Moreover, so far no consensus exists regarding characteristics of headache after intracranial endovascular procedure. Thus, there is a need for sound suggestions to improve the ICHD-3 beta diagnostic criteria. METHODS Using a prospective design, we identified consecutive patients with unruptured intracranial aneurysms (UIAs) with neuroendovascular treatment from January 2014 to December 2014. RESULTS In total, 73 patients were enrolled, and 58 patients ultimately completed the 6-month follow-up. After the procedure, five of the 29 patients (17.2%) with pre-existing headache experienced marked worsening after the procedure, while seven of the 29 patients without prior headache developed new-onset headache post-procedurally. The headaches started within 24 hours, with a mean duration of 24-72 hours. The headaches were moderate to severe. The eligibility of these events to be considered headaches caused by neuroendovascular procedures according to the ICHD-3 beta diagnostic criteria for designation was far from ideal. CONCLUSIONS Most cases of markedly worsening headaches and new-onset headaches started within 24 hours and persisted longer than that specified in the ICHD-3 beta diagnostic criteria. Moreover, considering that some items are not very practical, the ICHD-3 beta diagnostic criteria should be revised in the light of recent literature reports.
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Affiliation(s)
- Linjing Zhang
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
| | - Xiancong Wu
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
| | - Hai Di
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
| | - Tao Feng
- Department of Neurology, Heilongjiang Provincial Hospital, Harbin, PR China
| | - Yunxia Wang
- Department of Neurology, The First Hospital Affiliated to the Chinese PLA General Hospital, Beijing, PR China
| | - Jun Wang
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
| | - Xiangyu Cao
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
| | - Baomin Li
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
| | - Ruozhuo Liu
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China.,Department of Neurology, Hainan Branch of Chinese PLA General Hospital, Sanya, PR China
| | - Shengyuan Yu
- Department of Neurology, Chinese PLA General Hospital, Beijing, PR China
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99960
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Brannigan RP, Dove AP. Synthesis, properties and biomedical applications of hydrolytically degradable materials based on aliphatic polyesters and polycarbonates. Biomater Sci 2016; 5:9-21. [PMID: 27840864 DOI: 10.1039/c6bm00584e] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polyester-based polymers represent excellent candidates in synthetic biodegradable and bioabsorbable materials for medical applications owing to their tailorable properties. The use of synthetic polyesters as biomaterials offers a unique control of morphology, mechanical properties and degradation profile through monomer selection, polymer composition (i.e. copolymer vs. homopolymer, stereocomplexation etc.) and molecular weight. Within this review, the synthetic routes, degradation modes and application of aliphatic polyester- and polycarbonate-based biomaterials are discussed.
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Affiliation(s)
| | - Andrew P Dove
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK.
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99961
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Bulduk S, Bulduk EÖ, Süren T. Reduction of work-related musculoskeletal risk factors following ergonomics education of sewing machine operators. INTERNATIONAL JOURNAL OF OCCUPATIONAL SAFETY AND ERGONOMICS 2016; 23:347-352. [PMID: 27854185 DOI: 10.1080/10803548.2016.1262321] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Sıdıka Bulduk
- Faculty of Vocational Education, Gazi University, Turkey
| | | | - Tufan Süren
- Faculty of Vocational Education, Gazi University, Turkey
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99962
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Godfrey KM, Strachan E, Mostoufi S, Poeschla B, Succop A, Afari N. Familial Contributions to Self-Reported Sleep and Pain in Female Twins. PAIN MEDICINE 2016; 17:33-9. [PMID: 26271474 DOI: 10.1111/pme.12894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 12/25/2022]
Abstract
OBJECTIVE The relationship between sleep quality and pain has been studied in populations with chronic pain and in nonclinical populations using experimental paradigms. Little is known about the familial contributions to this relationship. This study examines self-reported sleep quality and pain in a nonclinical sample and to explore familial (i.e., shared genetic and common family environment) confounding in those relationships. DESIGN Cross-sectional. SUBJECTS Ninety nine community-based female twin pairs (N = 198) with a mean age of 29 years; 72% monozygotic. METHODS The short form McGill Pain Questionnaire (McGill), a visual analog scale (VAS), a body map, and the Pittsburgh Sleep Quality Index (PSQI) measured self-reported pain and sleep quality. Mixed model regression adjusted for age was used to examine relationships between the pain indices and PSQI in overall and within-pair models. RESULTS Higher PSQI total scores were significantly associated with higher scores across the McGill sensory (B = 0.37, p < 0.001), affective (B = 0.16, p < 0.001), total scores (B = 0.54, p < 0.001), the VAS (B = 2.41, p < 0.001), and number of sites with any pain on the body map (B = 0.42, p = 0.001). All of these associations were diminished and rendered nonsignificant in within-pair analyses that accounted for genetic and familial factors (all p's ≥ 0.01; Bonferroni α = 0.01). CONCLUSIONS These findings support an association between poor sleep quality and pain and suggest that this relationship may be confounded by shared genetic and environmental factors, which could elucidate biological mechanisms that underlie the development and maintenance of pain and sleep problems.
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99963
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Wang G, Jing Y, Cao L, Gong C, Gong Z, Cao X. A novel synthetic Asiatic acid derivative induces apoptosis and inhibits proliferation and mobility of gastric cancer cells by suppressing STAT3 signaling pathway. Onco Targets Ther 2016; 10:55-66. [PMID: 28053540 PMCID: PMC5189974 DOI: 10.2147/ott.s121619] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Activation of the transcription factor, signal transducers and activators of transcription 3 (STAT3), has been linked to the proliferation and migration of a variety of human cancer cells. These actions occur via the upregulation or downregulation of cell survival and tumor suppressor genes, respectively. Importantly, agents that can suppress STAT3 activation have the potential for use in the prevention and treatment of various cancers. In this study, an Asiatic acid (AA) derivative, N-(2α,3β,23-acetoxyurs-12-en-28-oyl)-l-proline methyl ester (AA-PMe), is reported to dose dependently suppress constitutive STAT3 activation in gastric cancer cells. This inhibition was mediated by blockade of Janus-activated kinase 2. Additionally, AA-PMe regulated the expression of STAT3-modulated gene products, including cyclin D1, Bax, Bcl-2, c-Myc, and matrix metalloproteinase (MMP)-2 and MMP-9. Finally, transfection with both a STAT3 mimic and an inhibitor reversed the AA-PMe-driven modulation of STAT3 downstream gene products. Overall, these results suggest that AA-PMe is a novel blocker of STAT3 activation and has the potential for the prevention and treatment of gastric cancer.
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Affiliation(s)
- Gang Wang
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University
| | - Yue Jing
- Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University
| | - Lingsen Cao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, People's Republic of China
| | - Changchang Gong
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University
| | - Zhunan Gong
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University; Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, People's Republic of China
| | - Xiangrong Cao
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, People's Republic of China
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99964
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Fu Z, Hu X, Wu Y, Zhou Z. Is There a Dose-Response Relationship of Cement Volume With Cement Leakage and Pain Relief After Vertebroplasty? Dose Response 2016; 14:1559325816682867. [PMID: 28182178 PMCID: PMC5283639 DOI: 10.1177/1559325816682867] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The aim of this study was to determine if there were dose–response relationships of cement volume with cement leakage and pain relief after percutaneous vertebroplasty (PVP) for osteoporosis vertebral compression fractures (OVCFs). We collected the patient and procedural characteristics on 108 patients with OVCFs in our hospital who received PVP. Univariate and multivariate analyses were performed to explore the relationships between these potential influential variables and cement leakage and pain relief at 1 month postoperatively. Multivariate linear and logistic regression analyses were conducted with the pain score reduction and the bone cement leakage as dependent variables and the potential risk factors as independent variables, respectively. The results showed that the independent risk factors for the pain relief were the cement volume injected and fracture age, and for bone cement leakage were the cement volume injected and low-viscosity cement. In conclusion, the present study indicated that there were positive dose–response correlation relationships of cement volume with the incidence of cement leakage and the degree of pain relief after PVP, respectively. Thus, the cement should be injected into the vertebrae as much as possible during the PVP procedure.
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Affiliation(s)
- Zhiyi Fu
- Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai City, China
| | - Xiaopeng Hu
- Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai City, China
| | - Yujie Wu
- Department of Orthopedics, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai City, China
| | - Zihui Zhou
- Department of Orthopaedics, Shanghai First People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai City, China
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99965
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Abstract
Worksite wellness interventions have been a part of companies’ health care offerings to address prevalent health risks such as obesity and physical inactivity. To enhance engagement, participation has been financially incentivized with the assumption that an external motivator in form of monetary benefit is employees’ primary driver. However, a more thorough investigation of behavioral regulations that lead to participation is essential, particularly in the absence of incentives. We surveyed a cohort of 436 white collar employees, of which 177 were worksite exercise program participants and 259 were non-participants. Diverse exercise facilities were available to all and participation was not incentivized. After controlling for covariates previously identified to affect participation, external regulation was a significant factor in the tested multivariate logistic regression. This finding adds to the evidence of a significant role of non-financial external motivators, such as organizational health culture and the necessity for a holistic participatory approach to health promotion.
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Affiliation(s)
| | - Lora A. Cavuoto
- Department of Industrial and Systems Engineering, University at Buffalo
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99966
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Quemelo PRV, Gasparato FDS, Vieira ER. Prevalence, risks and severity of musculoskeletal disorder symptoms among administrative employees of a Brazilian company. Work 2016; 52:533-40. [PMID: 26409374 DOI: 10.3233/wor-152131] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Musculoskeletal disorders (MSD) are common among office workers. OBJECTIVE To evaluate the prevalence, risks and symptoms of MSD among office workers of a Brazilian dairy company. METHODS Fifty office workers participated in the study. The following evaluations and questionnaires were completed: Rapid Upper Limb Assessment, Strain Index, Muscle Fatigue Assessment, Nordic General Questionnaire, and Oswestry Disability Index. RESULTS Seventy-four percent (n = 37) of the participants had MSD symptoms. The back was most commonly affected body part (81% , n = 30), followed by the upper limbs (70% , n = 26). Fifty-three percent of the workers with low back pain had mild to moderate disability, and the risk for the hands, wrists and fingers was moderate. Changes are required to reduce the risk of MSD among the participating office workers. CONCLUSION The prevalence of MSD symptoms was high; the back and upper limbs were most commonly affected. Data from the evaluations and questionnaires supplemented each other. The Rapid Upper Limb Assessment and Strain Index were better indicators of risk of MSD symptoms than the Muscle Fatigue Assessment. The participating office workers were exposed to moderate risk of developing MSD due to biomechanical overload and changes are required.
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Affiliation(s)
| | | | - Edgar Ramos Vieira
- Department of Physical Therapy, Florida International University, Miami, FL, USA
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99967
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Clarke JL, Skoufalos A, Scranton R. The American Opioid Epidemic: Population Health Implications and Potential Solutions. Report from the National Stakeholder Panel. Popul Health Manag 2016; 19 Suppl 1:S1-10. [PMID: 26908092 DOI: 10.1089/pop.2015.0144] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Janice L Clarke
- 1 Jefferson College of Population Health, Thomas Jefferson University , Philadelphia, Pennsylvania
| | - Alexis Skoufalos
- 1 Jefferson College of Population Health, Thomas Jefferson University , Philadelphia, Pennsylvania
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99968
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Insights on Molecular Mechanisms of Chondrocytes Death in Osteoarthritis. Int J Mol Sci 2016; 17:ijms17122146. [PMID: 27999417 PMCID: PMC5187946 DOI: 10.3390/ijms17122146] [Citation(s) in RCA: 228] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 12/05/2016] [Accepted: 12/12/2016] [Indexed: 12/21/2022] Open
Abstract
Osteoarthritis (OA) is a joint pathology characterized by progressive cartilage degradation. Medical care is mainly based on alleviating pain symptoms. Compelling studies report the presence of empty lacunae and hypocellularity in cartilage with aging and OA progression, suggesting that chondrocyte cell death occurs and participates to OA development. However, the relative contribution of apoptosis per se in OA pathogenesis appears complex to evaluate. Indeed, depending on technical approaches, OA stages, cartilage layers, animal models, as well as in vivo or in vitro experiments, the percentage of apoptosis and cell death types can vary. Apoptosis, chondroptosis, necrosis, and autophagic cell death are described in this review. The question of cell death causality in OA progression is also addressed, as well as the molecular pathways leading to cell death in response to the following inducers: Fas, Interleukin-1β (IL-1β), Tumor Necrosis factor-α (TNF-α), leptin, nitric oxide (NO) donors, and mechanical stresses. Furthermore, the protective role of autophagy in chondrocytes is highlighted, as well as its decline during OA progression, enhancing chondrocyte cell death; the transition being mainly controlled by HIF-1α/HIF-2α imbalance. Finally, we have considered whether interfering in chondrocyte apoptosis or promoting autophagy could constitute therapeutic strategies to impede OA progression.
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99969
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Risk Factors for Surgical Site Infections Following Neurosurgical Spinal Fusion Operations: A Case Control Study. Infect Control Hosp Epidemiol 2016; 38:340-347. [PMID: 27989249 DOI: 10.1017/ice.2016.307] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To determine risk factors for the development of surgical site infections (SSIs) in neurosurgery patients undergoing spinal fusion. DESIGN Retrospective case-control study. SETTING Large, academic, quaternary care center. PATIENTS The study population included all neurosurgery patients who underwent spinal fusion between August 1, 2009, and August 31, 2013. Cases were defined as patients in the study cohort who developed an SSI. Controls were patients in the study cohort who did not develop an SSI. METHODS To achieve 80% power with an ability to detect an odds ratio (OR) of 2, we performed an unmatched case-control study with equal numbers of cases and controls. RESULTS During the study period, 5,473 spinal fusion procedures were performed by neurosurgeons in our hospital. With 161 SSIs recorded during the study period, the incidence of SSIs associated with these procedures was 2.94%. While anterior surgical approach was found to be a protective factor (OR, 0.20; 95% confidence interval [CI], 0.08-0.52), duration of procedure (OR, 1.58; 95% CI, 1.29-1.93), American Society of Anesthesiologists score of 3 or 4 (OR, 1.79; 95% CI, 1.00-3.18), and hospitalization within the prior 30 days (OR, 5.8; 95% CI, 1.37-24.57) were found in multivariate analysis to be independent predictors of SSI following spinal fusion. Prior methicillin-resistant Staphylococcus aureus (MRSA) nares colonization was highly associated with odds 20 times higher of SSI following spinal fusion (OR, 20.30; 95% CI, 4.64-8.78). CONCLUSIONS In additional to nonmodifiable risk factors, prior colonization with MRSA is a modifiable risk factor very strongly associated with development of SSI following spinal fusion. Infect Control Hosp Epidemiol 2017;38:348-352.
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99970
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Does Deep Cervical Flexor Muscle Training Affect Pain Pressure Thresholds of Myofascial Trigger Points in Patients with Chronic Neck Pain? A Prospective Randomized Controlled Trial. Rehabil Res Pract 2016; 2016:6480826. [PMID: 27990302 PMCID: PMC5136630 DOI: 10.1155/2016/6480826] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/04/2016] [Accepted: 10/20/2016] [Indexed: 11/28/2022] Open
Abstract
Background. We need to understand more about how DNF performs in different contexts and whether it affects the pain threshold over myofascial trigger points (MTrPs). Purpose. The objectives were to investigate the effect of neck muscles training on disability and pain and on pain threshold over MTrPs in people with chronic neck pain. Methods. Patients with chronic neck pain were eligible for participation with a Neck Disability Index (NDI) score of over 5/50 and having at least one MTrP on either levator scapulae, upper trapezoid, or splenius capitis muscle. Patients were randomly assigned into either DNF training, superficial neck muscle exercise, or advice group. Generalized linear model (GLM) was used to detect differences in treatment groups over time. Results. Out of 67 participants, 60 (47 females, mean age: 39.45 ± 12.67) completed the study. Neck disability and neck pain were improved over time between and within groups (p < 0.05). However, no differences were found within and between the therapeutic groups (p < 0.05) in the tested muscles' PPTs and in cervicothoracic angle over a 7-week period. Conclusion. All three groups improved over time. This infers that the pain pathways involved in the neck pain relief are not those involved in pain threshold.
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99971
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Deng Y, Tan XT, Wu Q, Wang X. Correlations Between COL2A and Aggrecan Genetic Polymorphisms and the Risk and Clinicopathological Features of Intervertebral Disc Degeneration in a Chinese Han Population: A Case-Control Study. Genet Test Mol Biomarkers 2016; 21:108-115. [PMID: 27991836 DOI: 10.1089/gtmb.2016.0256] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES This case-control study was designed to evaluate the association of three COL2A1 single nucleotide polymorphism (SNPs) (rs1793953, rs2276454, and rs1793937) and Aggrecan variable number of tandem repeat (VNTR) polymorphisms with the risk and clinicopathological features of intervertebral disc degeneration (IVDD) in a Chinese Han population. MATERIALS AND METHODS Data from 295 IVDD patients (case group) and 324 healthy volunteers (control group) were collected between January 2012 and December 2014. Magnetic resonance examinations were conducted on all included subjects. The frequency distributions of the COL2A1 and Aggrecan polymorphisms were detected using direct sequencing and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis, respectively. RESULTS The genotype and allele frequencies of the COL2A1 genetic polymorphisms (rs1793953 and rs2276454) and the Aggrecan VNTR polymorphisms differed significantly between the case group and the control group (all p < 0.05). The haplotype analysis indicated that the frequencies of ACGL (L, long) and GTCL haplotypes were lower in the case group than in the control group (both p < 0.05). In the case group, the genotype and allele frequencies of the COL2A1 genes, rs1793953 and rs2276454, and Aggrecan VNTR significantly differed in terms of Pfirrmann grades III, IV, and V (all p < 0.05). Personal history of spine sprain or crush injury, history of IVDD in a first-degree relative, and COL2A1 rs2276454 and Aggrecan VNTR presence may be independent risk factors of IVDD (all p < 0.05, odds ratio [OR] >1), whereas tea drinking habit, part-time sports participation, and COL2A1 rs1793953 presence may be protective factors of IVDD (all p < 0.05, OR <1). CONCLUSION Our study provides evidence that COL2A1 and Aggrecan genetic polymorphisms may be correlated with the risk and clinicopathological features of IVDD in a Chinese Han population, and ACGL and GTCL haplotypes may be protective factors of IVDD.
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Affiliation(s)
- Yu Deng
- 1 Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University , Wuhan, P.R. China
| | - Xin-Ti Tan
- 2 Department of Histology and Embryology, Basic Medical School, Wuhan University , Wuhan, P.R. China
| | - Qiang Wu
- 1 Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University , Wuhan, P.R. China
| | - Xin Wang
- 1 Department of Orthopedic Surgery, Zhongnan Hospital of Wuhan University , Wuhan, P.R. China
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99972
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Farrell SF, Osmotherly PG, Cornwall J, Sterling M, Rivett DA. Cervical spine meniscoids: an update on their morphological characteristics and potential clinical significance. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2016; 26:939-947. [DOI: 10.1007/s00586-016-4915-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/27/2016] [Accepted: 12/04/2016] [Indexed: 12/18/2022]
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99973
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Ahn E, Choi G, Kang H, Baek C, Jung Y, Woo Y, Lee S, Chang Y. Palonosetron and Ramosetron Compared for Effectiveness in Preventing Postoperative Nausea and Vomiting: A Systematic Review and Meta-Analysis. PLoS One 2016; 11:e0168509. [PMID: 27992509 PMCID: PMC5167547 DOI: 10.1371/journal.pone.0168509] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 12/01/2016] [Indexed: 12/15/2022] Open
Abstract
Previous randomized controlled trials have reported conflicting findings on the superiority of palonosetron over ramosetron for preventing postoperative nausea and vomiting (PONV). Therefore, the present systematic review was registered in PROSPERO (CRD42016038120) and performed to compare the efficacy of perioperative administration of palonosetron to that of ramosetron for preventing PONV. We searched MEDLINE, EMBASE, and CENTRAL to identify all randomized controlled trials that compared the effectiveness of perioperative administration of palonosetron to that of ramosetron. The primary endpoints were defined as the incidence of postoperative nausea (PON), postoperative vomiting (POV), and PONV. A total of 695 patients were included in the final analysis. Subgroup analysis was performed through administration times which were divided into two phases: the early phase of surgery and the end of surgery. Combined analysis did not show differences between palonosetron and ramosetron in the overall incidence of PON, POV or PONV. Palonosetron was more effective than ramosetron, when the administration time for the 5-HT3 receptor antagonist was during the early phase of the operation. Otherwise, ramosetron was more effective than palonosetron, when the administration time was at the end of surgery. However, the quality of evidence for each outcome was low or very low and number of included studies was small, limiting our confidence in findings.
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Affiliation(s)
- EunJin Ahn
- Department of Anesthesiology and Pain Medicine, Inje University Seoul Paik Hospital, Seoul, Korea
| | - GeunJoo Choi
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hyun Kang
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea
- * E-mail:
| | - ChongWha Baek
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - YongHun Jung
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - YoungCheol Woo
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - SangSeok Lee
- Department of Anesthesiology and Pain Medicine, Inje University Sanggye Paik Hospital, Seoul, Korea
| | - YeoGoo Chang
- Department of General Surgery, Inje University Seoul Paik Hospital, Seoul, Korea
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99974
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Effectiveness of Dry Needling, Manual Therapy, and Kinesio Taping® for Patients with Chronic Myofascial Neck Pain: A Single-Blind Clinical Trial. Trauma Mon 2016. [DOI: 10.5812/traumamon.39261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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99975
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Navarrete-Opazo A, Cuitiño P, Salas I. Effectiveness of dietary supplements in spinal cord injury subjects. Disabil Health J 2016; 10:183-197. [PMID: 28065420 DOI: 10.1016/j.dhjo.2016.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 10/04/2016] [Accepted: 12/11/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND Individuals with spinal cord injury (SCI) consume more dietary supplements than the general population. However, there is limited information regarding the clinical effectiveness of dietary supplements in SCI population. OBJECTIVE To systematically review the effectiveness of dietary supplements for the prevention or treatment of health-related conditions associated with SCI. METHODS Randomized or non-randomized controlled clinical trials were selected, comparing the effect of any dose and form of a dietary supplement (defined by the Dietary Supplement Health and Education Act), with either no treatment, placebo, or other medication. Data Sources included the Cochrane Database, DARE, LILACS, CINAHL, EMBASE, MEDLINE, OTSeeker, PEDro, PsycINFO, SpeechBITE, ScienceDirect, Scopus, clinicaltrials.gov, Google Scholar, and OpenGrey. Two reviewers independently classified articles from January 1970 through October 2015, and 18 articles were selected. RESULTS Due to the heterogeneity of outcome measures across studies, a meta-analysis was not conducted. However, high-quality evidence showed that cranberry supplementation is not effective for prevention of urinary tract infections (UTIs) in SCI. Moderate-quality evidence supported a beneficial effect of vitamin D, alpha-lipoic acid, and omega-3 supplementation, although replication of results is needed. There were conflicting results for the effect of creatine supplementation on improvement of motor outcomes. Low-quality evidence does not permit assessment of the effectiveness of melatonin, whey protein, vitamin C, and Chinese herb in SCI. CONCLUSIONS There is sufficient data suggesting that cranberry supplementation is ineffective for prevention of UTIs in individuals with SCI. There is insufficient data to support or refute the use of any other dietary supplement in individuals with SCI.
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Affiliation(s)
- Angela Navarrete-Opazo
- Children's Hospital of Wisconsin, Milwaukee, WI, USA; Chile Teleton Institute, Santiago, Chile.
| | | | - Inés Salas
- Chile Teleton Institute, Santiago, Chile
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99976
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Zou Q, Zhou Q, Liu L, Dai H. A Highly Hydrophilic and Biodegradable Novel Poly(amide-imide) for Biomedical Applications. Polymers (Basel) 2016; 8:E441. [PMID: 30974718 PMCID: PMC6432413 DOI: 10.3390/polym8120441] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/09/2016] [Accepted: 12/13/2016] [Indexed: 12/25/2022] Open
Abstract
A novel biodegradable poly(amide-imide) (PAI) with good hydrophilicity was synthesized by incorporation of l-glycine into the polymer chain. For comparison purposes, a pure PAI containing no l-glycine was also synthesized with a three-step method. In this study, we evaluated the novel PAI's thermal stability, hydrophilicity, solubility, biodegradability and ability to support bone marrow mesenchymal stem cell (BMSC) adhesion and growth by comparing with the pure PAI. The hydrophilic tests demonstrated that the novel PAI has possible hydrophilicity at a 38° water contact angle on the molecule surface and is about two times more hydrophilic than the pure PAI. Due to an extra unit of l-glycine in the novel PAI, the average degradation rate was about 2.4 times greater than that of the pure PAI. The preliminary biocompatibility studies revealed that all the PAIs are cell compatible, but the pure PAI exhibited much lower cell adhesion than the l-glycine-incorporated novel PAI. The hydrophilic surface of the novel PAI was more suitable for cell adhesion, suggesting that the surface hydrophilicity plays an important role in enhancing cell adhesion and growth.
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Affiliation(s)
- Qiying Zou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
| | - Qian Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
| | - Langlang Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China.
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99977
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Spatiotemporal Changes of Calcitonin Gene-Related Peptide Innervation in Spinal Fusion. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5872860. [PMID: 27990431 PMCID: PMC5136639 DOI: 10.1155/2016/5872860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/17/2016] [Indexed: 01/26/2023]
Abstract
Few studies have investigated the role calcitonin gene-related peptide (CGRP) plays in the process of spinal fusion. The aim of the present study is to observe the temporal and spatial changes of CGRP induced by experimental fusion surgery in rats and elucidate the role of CGRP in spinal fusion. Male Sprague-Dawley rats were used in the study and the specimens were collected on the 7th, 14th, 21st, and 28th day, respectively. Then, histological and immunohistochemical analysis were applied to evaluate the fusion mass and spatiotemporal changes of CGRP chronologically. The results demonstrated that density of CGRP reached peak on the 21st day after surgery and most of the CGRP expression located surrounding the interface of allograft and fibrous tissue where the cells differentiate into osteoblasts, indicating that CGRP might be involved in the process of bone formation and absorption.
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99978
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Sun Z, Yin Z, Liu C, Tian J. The Changes in the Expression of NF-KB in a Degenerative Human Intervertebral Disc model. Cell Biochem Biophys 2016; 72:115-22. [PMID: 25433723 DOI: 10.1007/s12013-014-0417-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We aim at determining the changes in the expression of NF-kB signaling pathway in degenerative intervertebral discs. We collected normal and degenerated intervertebral discs tissues. The normal and degenerated cells were cultivated and their histopathology and immunofluoresence studies were used to observe the position of NF-kB p65 in the cell. We also treated the nucleus pulposus cells with inflammatory factors and inhibitors. Western blot was used to analyze the expression of different proteins. Real time fluorescence-based quantitative PCR was used for observation of NF-kB regulation of change in gene expression. Immunofluorescence showed that in the non-degenerative group the p65 was found in the cytoplasm of the nucleus pulposus cell while in the degenerated cell group the p65 protein was found in the nucleus of the cell. The expression of p65 increased with increase in the degree of degenerative change of the nucleus pulposus cell. RT-PCR showed that the expression of matrix metalloproteinases, aggrecanases and IL-6 was higher in the degenerative group. The amount of aggrecan and type II collagen was significantly decreased in the degenerative group. IL-1β was able to upregulate the activation of NF-kB and the expression of MMP-13 and ADAMTS-4 was also significantly increased. The effect of these proteins can be inhibited by the NF-kB inhibitor, BAY11-7082. The activation of the NK-kB signaling pathway in a degenerative intervertebral disc is gradually increased, regulating the over-expression of matrix-degrading enzymes. It plays an important role in the degradation of extracellular matrix.
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Affiliation(s)
- Zhongyi Sun
- Department of Orthopedics Surgery, School of Medicine, Shanghai First People's Hospital Affiliated Shanghai Jiao Tong University, 100, Haining Road, Shanghai, 200080, China
| | - Zhanmin Yin
- Department of Orthopedics Surgery, School of Medicine, Shanghai First People's Hospital Affiliated Shanghai Jiao Tong University, 100, Haining Road, Shanghai, 200080, China
- Spine and Joint Surgery, Central Hospital of Tai An, Shandong, China
| | - Chao Liu
- Department of Orthopedics Surgery, School of Medicine, Shanghai First People's Hospital Affiliated Shanghai Jiao Tong University, 100, Haining Road, Shanghai, 200080, China
| | - Jiwei Tian
- Department of Orthopedics Surgery, School of Medicine, Shanghai First People's Hospital Affiliated Shanghai Jiao Tong University, 100, Haining Road, Shanghai, 200080, China.
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99979
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Coogan JS, Francis WL, Eliason TD, Bredbenner TL, Stemper BD, Yoganandan N, Pintar FA, Nicolella DP. Finite Element Study of a Lumbar Intervertebral Disc Nucleus Replacement Device. Front Bioeng Biotechnol 2016; 4:93. [PMID: 27990418 PMCID: PMC5133048 DOI: 10.3389/fbioe.2016.00093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/16/2016] [Indexed: 11/13/2022] Open
Abstract
Nucleus replacement technologies are a minimally invasive alternative to spinal fusion and total disc replacement that have the potential to reduce pain and restore motion for patients with degenerative disc disease. Finite element modeling can be used to determine the biomechanics associated with nucleus replacement technologies. The current study focuses on a new nucleus replacement device designed as a conforming silicone implant with an internal void. A validated finite element model of the human lumbar L3-L4 motion segment was developed and used to investigate the influence of the nucleus replacement device on spine biomechanics. In addition, the effect of device design changes on biomechanics was determined. A 3D, L3-L4 finite element model was constructed from medical imaging data. Models were created with the normal intact nucleus, the nucleus replacement device, and a solid silicone implant. Probabilistic analysis was performed on the normal model to provide quantitative validation metrics. Sensitivity analysis was performed on the silicone Shore A durometer of the device. Models were loaded under axial compression followed by flexion/extension, lateral bending, or axial rotation. Compressive displacement, endplate stresses, reaction moment, and annulus stresses were determined and compared between the different models. The novel nucleus replacement device resulted in similar compressive displacement, endplate stress, and annulus stress and slightly higher reaction moment compared with the normal nucleus. The solid implant resulted in decreased displacement, increased endplate stress, decreased annulus stress, and decreased reaction moment compared with the novel device. With increasing silicone durometer, compressive displacement decreased, endplate stress increased, reaction moment increased, and annulus stress decreased. Finite element analysis was used to show that the novel nucleus replacement device results in similar biomechanics compared with the normal intact nucleus.
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Affiliation(s)
| | | | | | | | - Brian D Stemper
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA; Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, WI, USA
| | - Narayan Yoganandan
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA; Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, WI, USA
| | - Frank A Pintar
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA; Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, WI, USA
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99980
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Beatty AM, Bowden AE, Bridgewater LC. Functional Validation of a Complex Loading Whole Spinal Segment Bioreactor Design. J Biomech Eng 2016; 138:064501. [PMID: 27149909 DOI: 10.1115/1.4033546] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Indexed: 01/27/2023]
Abstract
Intervertebral disk (IVD) degeneration is a prevalent health problem that is highly linked to back pain. To understand the disease and tissue response to therapies, ex vivo whole IVD organ culture systems have recently been introduced. The goal of this work was to develop and validate the design of a whole spinal segment culturing system that loads the disk in complex loading similar to the in vivo condition, while preserving the adjacent endplates and vertebral bodies. The complex loading applied to the spinal segment (flexion-extension (FE), bilateral bending, and compression) was achieved with three pneumatic cylinders rigidly attached to a triangular loading platform. A culture container housed the spinal segment and was attached to the loading mechanism, which allowed for loading of the spinal segment. The dynamic bioreactor was able to achieve physiologic loading conditions with 100 N of applied compression and approximately 2-4 N · m of applied torque. The function of the bioreactor was validated through testing of bovine caudal IVDs with intact endplates and vertebral bodies that were isolated within 2 hrs of death and cultured for 14 days. The resulting IVD cell viability following 14 days of loading was much higher than unloaded control IVDs. The loading system accurately mimicked FE, bilateral bending, and compression motions seen during daily activities. The results indicate that this complex dynamic bioreactor may be appropriate for extended preclinical testing of vertebral-mounted spinal devices and therapies.
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99981
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Zhang J, Cui C, Liu Z, Tong T, Niu R, Shen Y. Predisposing factors for poor outcome of surgery for cervical spondylotic amyotrophy: a multivariate analysis. Sci Rep 2016; 6:39512. [PMID: 27991596 PMCID: PMC5171638 DOI: 10.1038/srep39512] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 11/24/2016] [Indexed: 11/09/2022] Open
Abstract
The purpose of this study was to characterize risk factors for poor surgical outcome in patients with cervical spondylotic amyotrophy (CSA). We retrospectively reviewed 88 cases of CSA surgery and investigated age, sex, duration of symptoms, atrophy type, preoperative muscle power, signal changes on MRI, anterior horn (AH) or ventral nerve root (VNR) compression, compression levels, surgical approach and postoperative recovery. Fifty (56.8%) patients had good surgical outcome. Logistic regression, with poor outcome as dependent variable, showed independent risks associated with duration of symptoms (OR; 1 for symptom duration less than 3 months versus 3.961 [95% CI; 1.203–13.039, p = 0.024] for symptom duration of 3–6 months versus 18.724 [95% CI; 3.967–88.367, p < 0.001] for symptom duration greater than 6 months), compression type (OR; 1 for VNR versus 4.931 [95% CI; 1.457–16.685, p = 0.010] for AH versus 5.538 [95% CI; 1.170–26.218, p = 0.031] for VNR + AH), and atrophy type (OR; 1 for proximal type versus 6.456 [95% CI; 1.938–21.508, p = 0.002] for distal type). These findings suggest that a long duration of symptoms, AH or both AH and VNR compression, and distal type are risk factors for poor surgical outcome in patients with CSA.
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Affiliation(s)
- JingTao Zhang
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Can Cui
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Zhao Liu
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Tong Tong
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - RuiJie Niu
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
| | - Yong Shen
- Department of Spinal Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China
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99982
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Abstract
BACKGROUND Complex regional pain syndrome is characterized by spontaneous or induced pain disproportionate in relation to the initial event and is accompanied by a variety of regional and motor disturbances, leading to a variety of clinical presentations. It is often associated with surgery and minor trauma. PATHOPHYSIOLOGY Three mechanisms are postulated: changes secondary to post traumatic inflammation, peripheral vasomotor dysfunction and structural and functional changes of the central nervous system as a result of maladaptation. DIAGNOSIS made based on the criteria of Budapest. The patient must have one symptom and sign of each criterion at diagnosis: Continuing pain, disproportionate to any inciting event. A sensory, vasomotor, oedema and motor/trophic change sign and symptoms that are not explained by another diagnosis or cause. TREATMENT Multimodal treatment is suggested. There is no gold standard. In early stage NSAIDs or steroids can be used. Drugs used for neuropathic pain treatment have been suggested, but there is not enough evidence for any of these. There is low evidence that bisphosphonates, calcitonin, ketamine and mirror therapy are effective compared to placebo. Interventional treatment should be stepped from epidural block, neurostimulation, intrathecal pump to experimental therapies in case of intractable pain. DISCUSSION Although complex regional pain syndrome has been a recognized entity for over 100 years, no clear evidence exists for first-line treatments; however, new technologies that are applicable in complex regional pain syndrome treatment have been developed.
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99983
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Guo R, Sakakibara T, Mizuno T, Akeda K, Kondo T, Kasai Y. Relief of Lower Back and Leg Pain after Myelography. Open Orthop J 2016; 10:539-542. [PMID: 27990191 PMCID: PMC5120379 DOI: 10.2174/1874325001610010539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/21/2016] [Accepted: 10/28/2016] [Indexed: 12/05/2022] Open
Abstract
Introduction: It is well-known that many patients will have adverse reactions such as headache and nausea after undergoing myelography, but we have often seen cases where symptoms such as lower back pain and leg pain were alleviated following myelography. To the best of our knowledge, such clinical cases of post-myelographic alleviation have not been reported. Materials and Methods: A total of 325 patients with a degenerative lumbar spinal disorder who underwent myelography were prospectively investigated at four hospitals from April 2012 to March 2014 to survey the post-myelographic alleviation of lower back and leg pain prospectively. The severities of lower back pain, leg pain and numbness of the lower extremities were evaluated and intermittent claudication distance was measured before myelography. The magnetic resonance imaging (MRI) findings and myelographic findings were also evaluated for the patients that their symptoms were improved. Results: Thirty-five of 325 cases (10.8%) of these patients had their symptoms alleviated after undergoing myelography; 26 cases of lower back pain, two cases of leg pain, two cases of numbness of the lower extremity, and five cases of intermittent claudication. Conclusion: In the patients of a degenerative lumbar spinal disorder, about 10% cases with lower back pain or intermittent claudication had post-myelographic alleviation. Intradural injection therapy might be a therapeutic method to alleviate these symptoms.
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Affiliation(s)
- Rui Guo
- School of Medicine, Jiangsu University, Zhenjiang, China; Department of Spinal Surgery and Medical Engineering, Mie University Graduate School of Medicine, Tsu City, Mie, Japan
| | - Toshihiko Sakakibara
- Department of Spinal Surgery and Medical Engineering, Mie University Graduate School of Medicine, Tsu City, Mie, Japan
| | - Tetsutaro Mizuno
- Department of Spinal Surgery and Medical Engineering, Mie University Graduate School of Medicine, Tsu City, Mie, Japan
| | - Koji Akeda
- Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu City, Mie, Japan
| | - Tetsushi Kondo
- Department of Orthopaedc Surgery, Murase Hospital, Mie, Japan
| | - Yuichi Kasai
- Department of Spinal Surgery and Medical Engineering, Mie University Graduate School of Medicine, Tsu City, Mie, Japan
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99984
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What Is the Value of Surgical Intervention for Sacral Metastases? PLoS One 2016; 11:e0168313. [PMID: 27992502 PMCID: PMC5167270 DOI: 10.1371/journal.pone.0168313] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 11/30/2016] [Indexed: 11/30/2022] Open
Abstract
Objective To investigate the impact of surgery on local control and quality of life for patients with sacral metastases and to determine whether the complications of surgery were acceptable. Methods Curettage for metastatic lesions of the sacrum was performed in 154 patients with obvious sacral nerve compression symptoms between July 1997 and July 2014. Potential risk factors were evaluated in univariate analysis for associations with local control; multivariate conditional logistic regression was used to identify the combined effects. Complications were recorded. The pre- and postoperative visual analogue scale of pain, Eastern Cooperative Oncology Group (ECOG) scores, and quality of life scores were collected to evaluate the impact of surgery. Results The cumulative survival rates were 71.8%, 41.1%, and 22.5% and the local control rates were 95.4%, 90.9%, and 79.4% at 6, 12, and 24 months, respectively. Tumors with rapid growth, the lack of preoperative radiotherapy, and application of aortic balloon occlusion were significantly associated with good local control. There were 29 (18.8%) complications related to surgery. The mean pain scores were 7.04 preoperatively, 1.66 at 1 month postoperatively (p = 0.003), and 1.51 at 3 months postoperatively (p = 0.002). The mean ECOG scores were 2.82 preoperatively and 1.47 3 months postoperatively (p < 0.001). There were significant improvements from preoperatively to 3 months postoperatively in global health status (43.3 vs. 52.1), pain (62.0 vs. 33.2), and constipation (51.4 vs. 30.3) (p < 0.001). Conclusions Surgery for sacral metastasis is effective to palliate pain rapidly and improve constipation and quality of life and has a low rate of complications.
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99985
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Hoppe S, Keel MJB. Pedicle screw augmentation in osteoporotic spine: indications, limitations and technical aspects. Eur J Trauma Emerg Surg 2016; 43:3-8. [PMID: 27995283 DOI: 10.1007/s00068-016-0750-x] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/12/2016] [Indexed: 12/23/2022]
Abstract
PURPOSE The need for spinal instrumented fusion in osteoporotic patients is rising. In this review, we try to give an overview of the current spectrum of pedicle screw augmentation techniques, safety aspects and indications. METHODS Review of literature and discussion of indications, limitations and technical aspects. RESULTS Various studies have shown higher failure rates in osteoporotic patients, most probably due to reduced bone quality and a poor bone-screw interface. Augmentation of pedicle screws with bone cement, such as polymethylmethacrylate or calcium based cements, is one valid option to enhance fixation if required. CONCLUSIONS Crucial factors for success in the use of augmented screws are careful patient selection, a proper technique and choice of the ideal cement augmentation option.
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Affiliation(s)
- S Hoppe
- Department of Orthopedic and Trauma Surgery, Inselspital, University Hospital, University of Bern, Bern, Switzerland.
| | - M J B Keel
- Department of Orthopedic and Trauma Surgery, Inselspital, University Hospital, University of Bern, Bern, Switzerland
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99986
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Östh J, Brolin K, Svensson MY, Linder A. A Female Ligamentous Cervical Spine Finite Element Model Validated for Physiological Loads. J Biomech Eng 2016; 138:061005. [PMID: 26974520 DOI: 10.1115/1.4032966] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Indexed: 11/08/2022]
Abstract
Mathematical cervical spine models allow for studying of impact loading that can cause whiplash associated disorders (WAD). However, existing models only cover the male anthropometry, despite the female population being at a higher risk of sustaining WAD in automotive rear-end impacts. The aim of this study is to develop and validate a ligamentous cervical spine intended for biomechanical research on the effect of automotive impacts. A female model has the potential to aid the design of better protection systems as well as improve understanding of injury mechanisms causing WAD. A finite element (FE) mesh was created from surface data of the cervical vertebrae of a 26-year old female (stature 167 cm, weight 59 kg). Soft tissues were generated from the skeletal geometry and anatomical literature descriptions. Ligaments were modeled with nonlinear elastic orthotropic membrane elements, intervertebral disks as composites of nonlinear elastic bulk elements, and orthotropic anulus fibrosus fiber layers, while cortical and trabecular bones were modeled as isotropic plastic-elastic. The model has geometrical features representative of the female cervical spine-the largest average difference compared with published anthropometric female data was the vertebral body depth being 3.4% shorter for the model. The majority the cervical segments compare well with respect to biomechanical data at physiological loads, with the best match for flexion-extension loads and less biofidelity for axial rotation. An average female FE ligamentous cervical spine model was developed and validated with respect to physiological loading. In flexion-extension simulations with the developed female model and an existing average male cervical spine model, a greater range of motion (ROM) was found in the female model.
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99987
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Prognostic Value of Bone Mineral Density on Curve Progression: A Longitudinal Cohort Study of 513 Girls with Adolescent Idiopathic Scoliosis. Sci Rep 2016; 6:39220. [PMID: 27991528 PMCID: PMC5171643 DOI: 10.1038/srep39220] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 11/21/2016] [Indexed: 01/01/2023] Open
Abstract
Osteopenia has been found to occur in about 30% of Adolescent Idiopathic Scoliosis (AIS) patients. This study aimed to investigate its prognostic value on the risk of curve progression to surgical threshold. Newly diagnosed AIS girls (N = 513) with Cobb angle 10°–40° were recruited with follow-up till maturity. Bilateral hips were assessed with dual-energy x-ray absorptiometry (DXA). Distal radius of a subgroup of 90 subjects was further assessed with high-resolution peripheral quantitative computed tomography (HR-pQCT). 55 patients progressed to surgical threshold or underwent spine surgery at the end of follow-up. Cox model with osteopenia status performed significantly better than the model without (p = 0.010). Osteopenic patients had significantly higher risk of surgery (HR2.25, p = 0.011), even after adjustment for menarche status, age and initial Cobb angle. The incremental predictive value of osteopenia was, however, not statistically significant. In the subgroup analysis, cortical bone density was identified as a better marker to improve the sensitivity of the prediction, but requires further larger study to validate this finding. These consistent results of bone density measured at different sites suggest a systemic effect, rather than local effect to the deformed spine, and support to the link of abnormal bone density to the etiopathogenesis in AIS patients.
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99988
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Visits to US emergency departments by 20- to 29-year-olds with toothache during 2001-2010. J Am Dent Assoc 2016; 146:295-302.e2. [PMID: 25925521 DOI: 10.1016/j.adaj.2015.01.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 01/02/2015] [Accepted: 01/11/2015] [Indexed: 11/23/2022]
Abstract
BACKGROUND Visits to emergency departments (EDs) for dental symptoms are on the rise, yet reliance on EDs for dental care is far from ideal. ED toothache visits represent opportunities to improve access to professional dental care. METHODS This research focuses on 20- to 29-year-olds, who account for more ED toothache visits than do other age groups. The authors analyzed publicly available ED visit data from the National Hospital Ambulatory Medical Care Survey (NHAMCS) from 2001 through 2010. They assessed trends in ED toothache visit rates compared with back pain and all cause ED visits during the past decade. The authors used NHAMCS data for years 2009 and 2010 to characterize the more recent magnitude, relative frequency, and independent risk factors for ED toothache visits. Statistical analyses accounted for the complex sampling design. RESULTS The average annual increase in ED visit rates among 20- to 29-year-olds during 2001-2010 was 6.1% for toothache, 0.3% for back pain, and 0.8% for all causes of ED visits. In 2009 and 2010, 20- to 29-year-olds made an estimated 1.27 million ED visits for toothaches and accounted for 42% of all ED toothache visits. Toothache was the fifth most common reason for any ED visit and third most common for uninsured ED visits by 20- to 29-year-olds. Independent risk factors for ED toothache visits were being uninsured or Medicaid-insured. CONCLUSIONS Younger adults increasingly rely on EDs for toothaches-likely because of barriers to accessing professional dental care. Expanding dental coverage and access to affordable dental care could increase options for timely dental care and decrease ED use for dental symptoms. PRACTICAL IMPLICATIONS Though additional research is needed to better understand why younger adults disproportionately use the ED for toothaches, findings from this study suggest the importance of maintaining access to a dental home from childhood through adolescence and subsequently into early adulthood.
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99989
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Zhang D, Papavassiliou E. Spinal Intradural Arachnoid Webs Causing Spinal Cord Compression with Inconclusive Preoperative Imaging: A Report of 3 Cases and a Review of the Literature. World Neurosurg 2016; 99:251-258. [PMID: 27993741 DOI: 10.1016/j.wneu.2016.12.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/02/2016] [Accepted: 12/05/2016] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Spinal arachnoid webs are a rare variant of spinal arachnoid cysts where 1 or multiple focal membranes of arachnoid tissue obstruct the subarachnoid space. Only 11 prior cases of arachnoid webs have been reported in the literature. We present a series of 3 consecutive cases of arachnoid webs from our institution and review the literature on this rare condition to provide recommendations for its management. METHODS Retrospective chart review was performed for 3 consecutive cases of intradural arachnoid webs causing spinal cord compression at our institution, with inconclusive preoperative imaging, treatment with surgical decompression, and resection. There were no external sources of funding. RESULTS Our cases occurred dorsally in the thoracic spine and were associated with syringomyelia. Preoperative magnetic resonance imaging, computed tomography myelography, and cine magnetic resonance imaging were inconclusive, and the definitive diagnosis was made with intraoperative ultrasound. Patients underwent laminectomies and resection of arachnoid webs. Unique from prior reports of arachnoid webs, the webs in the present cases were composed of multiple septated longitudinal membranes rather than a transverse band. All patients had improvement of presenting symptoms postoperatively. CONCLUSIONS Intradural arachnoid webs causing spinal cord compression are rare. Preoperative imaging may be inconclusive. Because of the septated longitudinal nature of the visualized membranes, we propose a 1-way valve mechanism of cerebrospinal fluid obstruction causing gradual cord compression and resultant syringomyelia.
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Affiliation(s)
- Dafang Zhang
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
| | - Efstathios Papavassiliou
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
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99990
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Ben Abdennebi A, Aubry S, Ounalli L, Fayache MS, Delabrousse E, Petegnief Y. Comparative dose levels between CT-scanner and slot-scanning device (EOS system) in pregnant women pelvimetry. Phys Med 2016; 33:77-86. [PMID: 27993442 DOI: 10.1016/j.ejmp.2016.12.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/14/2016] [Accepted: 12/07/2016] [Indexed: 12/18/2022] Open
Abstract
PURPOSE To estimate fetal absorbed doses for pregnant women pelvimetry, a comparative study between EOS imaging system and low-dose spiral CT-scanner was carried out. For this purpose three different studies were investigated: in vivo, in vitro and Monte Carlo calculations. METHODS In vivo dosimetry was performed, using OSL NanoDot dosimeters, to determine the dose to the skin of twenty pregnant women. In vitro studies were established by using a cubic phantom of water, in order to estimate the out of field doses. In the latter study, OSLDs were placed at depths corresponding to the lowest, average and highest position of the uterus. Monte Carlo calculations of effective doses to high radio-sensitive organs were established, using PCXMC and CTExpo software suites for EOS imaging system and CT-scanner, respectively. RESULTS The EOS imaging system reduces radiation exposure 4 to 8 times compared to the CT-scanner. The entrance skin doses were 74% (p-values <0.01) higher with the CT-scanner than with the EOS system. In the out of field region, the measured doses of the EOS system were reduced by 80% (p-values <0.02). Monte Carlo calculations confirmed that effective doses to organs are less accentuated for EOS than for CT pelvimetry. CONCLUSIONS The EOS system is less irradiating than the CT exam. The out-of-field dose which is significant, is lower in the EOS than in the CT-scanner and could be reduced even further by optimizing the time used for image acquisition.
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Affiliation(s)
- A Ben Abdennebi
- Regional and University Hospital of Besançon, 25000 Besançon, France; Faculty of Mathematical, Physical and Natural Sciences of Tunis, 2092 El Manar, Tunis, Tunisia; Laboratory on Energy and Matter for Nuclear Sciences Development, LR16CNSTN02, Tunisia
| | - S Aubry
- Regional and University Hospital of Besançon, 25000 Besançon, France; Nanomedicine Lab Imagery and Therapeutics EA 4662, University of Franche-Comte, 25000 Besancon, France
| | - L Ounalli
- National Center for Nuclear Sciences and Technology, 2020 Ariana, Tunisia; Laboratory on Energy and Matter for Nuclear Sciences Development, LR16CNSTN02, Tunisia.
| | - M S Fayache
- Faculty of Mathematical, Physical and Natural Sciences of Tunis, 2092 El Manar, Tunis, Tunisia; Laboratory on Energy and Matter for Nuclear Sciences Development, LR16CNSTN02, Tunisia
| | - E Delabrousse
- Regional and University Hospital of Besançon, 25000 Besançon, France; Nanomedicine Lab Imagery and Therapeutics EA 4662, University of Franche-Comte, 25000 Besancon, France
| | - Y Petegnief
- Regional and University Hospital of Besançon, 25000 Besançon, France
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99991
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Anatomical Location of the Common Iliac Veins at the Level of the Sacrum: Relationship between Perforation Risk and the Trajectory Angle of the Screw. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1457219. [PMID: 28078279 PMCID: PMC5203894 DOI: 10.1155/2016/1457219] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/08/2016] [Accepted: 11/21/2016] [Indexed: 11/17/2022]
Abstract
Purpose. To determine the safety of transarticular surface screw (TASS) insertion and the anatomical location of the common iliac veins (CIVs) at the level of the promontorium. Materials and Methods. The locations of the CIVs on 1 mm computed tomography-myelography slices of 50 patients at the level of the promontorium and 20 human cadavers were investigated. Results. Among the patients, the left CIV was closer to the S1 anterior wall than the right CIV (mean distance: 5.0 ± 3.0 and 7.0 ± 4.2 mm, resp.). The level of the inferior vena cava (IVC) formation varied among the cadavers. The mean distance between the IVC formation and promontorium tip was 30.2 ± 12.8 mm. The height of the IVC formation and distance between the right and the left CIVs at the level of the promontorium were significantly correlated (P < 0.001). Conclusion. The TASS trajectory is safe as long as the screw does not penetrate the anterior cortex of S1. The level of the IVC formation can help to predict the distance between the right and the left CIVs at the level of the promontorium. The CIVs do not have a uniform anatomical location; therefore, preoperative computed tomography is necessary to confirm their location.
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99992
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Ishiguro T, Serikawa T, Yahata T, Enomoto T. Gestational choriocarcinoma: Rare spinal metastasis during a viable pregnancy. J Obstet Gynaecol Res 2016; 43:421-424. [PMID: 27987335 DOI: 10.1111/jog.13200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/30/2016] [Accepted: 09/07/2016] [Indexed: 11/28/2022]
Abstract
Gestational choriocarcinoma metastasizing to the bones, especially to the spine, is extremely rare. In addition, there are few reports of choriocarcinoma during a viable pregnancy. We report a case of gestational choriocarcinoma that metastasized to the lumbar spine during a viable pregnancy in a 41-year-old woman with a history of a missed abortion. A heterogeneous cervical mass was detected at gestational week 16. Subsequently, a metastatic lesion appeared during the pregnancy, and fetal demise in utero occurred. Pathological examination revealed that the cervical tumor and metastatic spinal tumor were choriocarcinoma. The patient's condition deteriorated rapidly and we were unable to save her life, despite multidrug chemotherapy. Surgical tumor resection and pregnancy might involve a substantial risk of choriocarcinoma metastasis. It is important to obtain an early diagnosis for this life-threatening disease in order to facilitate appropriate treatment, despite pregnancy.
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Affiliation(s)
- Tatsuya Ishiguro
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital,, Niigata, Japan
| | - Takehiro Serikawa
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital,, Niigata, Japan
| | - Tetsuro Yahata
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital,, Niigata, Japan
| | - Takayuki Enomoto
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital,, Niigata, Japan
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99993
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Loughenbury PR, Berry L, Brooke BT, Rao AS, Dunsmuir RA, Millner PA. Benefits of the use of blood conservation in scoliosis surgery. World J Orthop 2016; 7:808-813. [PMID: 28032033 PMCID: PMC5155256 DOI: 10.5312/wjo.v7.i12.808] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 08/09/2016] [Accepted: 10/09/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate whether autologous blood transfusion (ABT) drains and intra-operative cell salvage reduced donor blood transfusion requirements during scoliosis surgery.
METHODS Retrospective data collection on transfusion requirements of patients undergoing scoliosis surgery is between January 2006 and March 2010. There were three distinct phases of transfusion practice over this time: Group A received “traditional treatment” with allogeneic red cell transfusion (ARCT) in response to an intra- or post-operative anaemia (Hb < 8 g/dL or a symptomatic anaemia); Group B received intra-operative cell salvage in addition to “traditional treatment”. In group C, ABT wound drains were used together with both intra-operative cell salvage and “traditional treatment”.
RESULTS Data from 97 procedures on 77 patients, there was no difference in mean preoperative haemoglobin levels between the groups (A: 13.1 g/dL; B: 13.49 g/dL; C: 13.66 g/dL). Allogeneic red cell transfusion was required for 22 of the 37 procedures (59%) in group A, 17 of 30 (57%) in group B and 16 of 30 (53%) in group C. There was an overall 6% reduction in the proportion of patients requiring an ARCT between groups A and C but this was not statistically significant (χ2 = 0.398). Patients in group C received fewer units (mean 2.19) than group B (mean 2.94) (P = 0.984) and significantly fewer than those in group A (mean 3.82) (P = 0.0322). Mean length of inpatient stay was lower in group C (8.65 d) than in groups B (12.83) or A (12.62).
CONCLUSION When used alongside measures to minimise blood loss during surgery, ABT drains and intra-operative cell salvage leads to a reduced need for donor blood transfusion in patients undergoing scoliosis surgery.
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99994
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Hung YJ, Miller J. Extrinsic visual feedback and additional cognitive/physical demands affect single-limb balance control in individuals with ankle instability. World J Orthop 2016; 7:801-807. [PMID: 28032032 PMCID: PMC5155255 DOI: 10.5312/wjo.v7.i12.801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/06/2016] [Accepted: 10/09/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the impact of extrinsic visual feedback and additional cognitive/physical demands on single-limb balance in individuals with ankle instability.
METHODS Sixteen subjects with ankle instability participated in the study. Ankle instability was identified using the Cumberland Ankle Instability Tool (CAIT). The subject’s unstable ankle was examined using the Athletic Single Leg Stability Test of the Biodex Balance System with 4 different protocols: (1) default setting with extrinsic visual feedback from the monitor; (2) no extrinsic visual feedback; (3) no extrinsic visual feedback with cognitive demands; and (4) no extrinsic visual feedback with physical demands. For the protocol with added cognitive demands, subjects were asked to continue subtracting 7 from a given number while performing the same test without extrinsic visual feedback. For the protocol with added physical demands, subjects were asked to pass and catch a basketball to and from the examiner while performing the same modified test.
RESULTS The subject’s single-limb postural control varied significantly among different testing protocols (F = 103; P = 0.000). Subjects’ postural control was the worst with added physical demands and the best with the default condition with extrinsic visual feedback. Pairwise comparison shows subjects performed significantly worse in all modified protocols (P < 0.01 in all comparisons) compared to the default protocol. Results from all 4 protocols are significantly different from each other (P < 0.01) except for the comparison between the “no extrinsic visual feedback” and “no extrinsic visual feedback with cognitive demands” protocols. Comparing conditions without extrinsic visual feedback, adding a cognitive demand did not significantly compromise single-limb balance control but adding a physical demand did. Scores from the default protocol are significantly correlated with the results from all 3 modified protocols: No extrinsic visual feedback (r = 0.782; P = 0.000); no extrinsic visual feedback with cognitive demands (r = 0.569; P = 0.022); no extrinsic visual feedback with physical demands (r = 0.683; P = 0.004). However, the CAIT score is not significantly correlated with the single-limb balance control from any of the 4 protocols: Default with extrinsic visual feedback (r = -0.210; P = 0.434); no extrinsic visual feedback (r = -0.450; P = 0.081); no extrinsic visual feedback with cognitive demands (r = -0.406; P = 0.118); no extrinsic visual feedback with physical demands (r = -0.351; P = 0.182).
CONCLUSION Single-limb balance control is worse without extrinsic visual feedback and/or with cognitive/physical demands. The balance test may not be a valid tool to examine ankle instability.
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99995
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Park SH, Jung CS, Min BH. Advances in three-dimensional bioprinting for hard tissue engineering. Tissue Eng Regen Med 2016; 13:622-635. [PMID: 30603444 DOI: 10.1007/s13770-016-0145-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 10/19/2016] [Accepted: 10/24/2016] [Indexed: 12/12/2022] Open
Abstract
The need for organ and tissue regeneration in patients continues to increase because of a scarcity of donors, as well as biocompatibility issues in transplant immune rejection. To address this, scientists have investigated artificial tissues as an alternative to transplantation. Three-dimensional (3D) bioprinting technology is an additive manufacturing method that can be used for the fabrication of 3D functional tissues or organs. This technology promises to replicate the complex architecture of structures in natural tissue. To date, 3D bioprinting strategies have confirmed their potential practice in regenerative medicine to fabricate the transplantable hard tissues, including cartilage and bone. However, 3D bioprinting approaches still have unsolved challenges to realize 3D hard tissues. In this manuscript, the current technical development, challenges, and future prospects of 3D bioprinting for engineering hard tissues are reviewed.
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Affiliation(s)
- Sang-Hyug Park
- 1Department of Biomedical Engineering, Pukyong National University, Busan, Korea
| | - Chi Sung Jung
- 2Department of Molecular Science & Technology, Ajou University, Suwon, Korea.,3Cell Therapy Center, Ajou University Medical Center, Suwon, Korea
| | - Byoung-Hyun Min
- 2Department of Molecular Science & Technology, Ajou University, Suwon, Korea.,3Cell Therapy Center, Ajou University Medical Center, Suwon, Korea.,4Department of Orthopedic Surgery, School of Medicine, Ajou University, Suwon, Korea.,5Department of Orthopedic Surgery, School of Medicine, Ajou University, 164 World cup-ro, Yeongtong-gu, Suwon, 16499 Korea
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99996
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Evaluating the Consistency, Repeatability, and Reproducibility of Osteometric Data on Dry Bone Surfaces, Scanned Dry Bone Surfaces, and Scanned Bone Surfaces Obtained from Living Individuals. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s13219-016-0172-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Applying dry bone osteometrics to virtual bone surfaces obtained via medical imaging raises the question of consistency between the variables. Variables obtained from virtual bone surfaces also need to be sufficiently repeatable and reproducible to be valid for anthropological studies. This is also true for the landmarks defining these variables and for their acquisition. The consistency between variables taken directly from dry bones and from the virtual surfaces of dry bones was tested on 40 clavicles. 30 virtual surfaces of iliae, fifth lumbar vertebrae, and clavicles reconstructed from computed tomography scans of living individuals were used to test the repeatability and reproducibility of 16 landmarks and 19 variables. Statistical tests, graphical and quantitative error evaluations, and intraclass correlation coefficients were applied. The differences between all variables taken on dry and virtual clavicles were less than ±1 mm. Bland–Altman plots showed more than 95% reliability between variables obtained on dry bone and their virtually reconstructed surfaces, confirming their consistency and thus validating their use in osteometric studies independently of the medium of study. Although not all landmarks were repeatable and reproducible, most variables were. To assess intra- or inter-observer errors, graphical representations or coefficients are more precise and accurate than statistical tests. These two evaluation methods should be given priority to test the repeatability and reproducibility of osteometric variables.
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99997
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Notohamiprodjo S, Stahl R, Braunagel M, Kazmierczak PM, Thierfelder KM, Treitl KM, Wirth S, Notohamiprodjo M. Diagnostic accuracy of contemporary multidetector computed tomography (MDCT) for the detection of lumbar disc herniation. Eur Radiol 2016; 27:3443-3451. [PMID: 27988890 DOI: 10.1007/s00330-016-4686-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/23/2016] [Accepted: 11/29/2016] [Indexed: 01/24/2023]
Abstract
OBJECTIVES To evaluate the diagnostic accuracy of multidetector CT (MDCT) for detection of lumbar disc herniation with MRI as standard of reference. METHODS Patients with low back pain underwent indicated MDCT (128-row MDCT, helical pitch), 60 patients with iterative reconstruction (IR) and 67 patients with filtered back projection (FBP). Lumbar spine MRI (1.5 T) was performed within 1 month. Signal-to-noise ratios (SNR) of cerebrospinal fluid (CSF), annulus fibrosus (AF) and the spinal cord (SC) were determined for all modalities. Two readers independently rated image quality (IQ), diagnostic confidence and accuracy in the diagnosis of lumbar disc herniation using MRI as standard of reference. Inter-reader correlation was assessed with weighted κ. RESULTS Sensitivity, specificity, precision and accuracy of MDCT for disc protrusion were 98.8%, 96.5%, 97.1%, 97.8% (disc level), 97.7%, 92.9%, 98.6%, 96.9% (patient level). SNR of IR was significantly higher than FBP. IQ was significantly better in IR owing to visually reduced noise and improved delineation of the discs. κ (>0.90) was excellent for both algorithms. CONCLUSION MDCT of the lumbar spine yields high diagnostic accuracy for detection of lumbar disc herniation. IR improves image quality so that the provided diagnostic accuracy is principally equivalent to MRI. KEY POINTS • MDCT is an accurate alternative to MRI in disc herniation diagnosis. • By IR enhanced image quality improves MDCT diagnostic confidence similar to MRI. • Advances in CT technology contribute to improved diagnostic performance in lumbar spine imaging.
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Affiliation(s)
- S Notohamiprodjo
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany.
| | - R Stahl
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany
| | - M Braunagel
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany
| | - P M Kazmierczak
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany
| | - K M Thierfelder
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany
| | - K M Treitl
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany
| | - S Wirth
- Institute for Clinical Radiology, University Hospital of Munich, LMU Munich, Nussbaumstr. 20, 80336, Munich, Germany
| | - M Notohamiprodjo
- Diagnostic and Interventional Radiology, University Hospital Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
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99998
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Ando K, Imagama S, Kobayashi K, Nishida Y, Ishiguro N. Aggressive osteoblastoma of the cervical spine involving the canal and vertebral artery: a case report. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2016; 26:111-116. [PMID: 27981453 DOI: 10.1007/s00586-016-4904-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 11/20/2016] [Accepted: 11/29/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE We present such a case of aggressive osteoblastoma of cervical spine. We describe its complicated clinical progression, hoping to shed light on the surgical strategy of this complex tumor. METHODS We present such a case of aggressive osteoblastoma involving the C6-7 vertebrae. A 25-year-old man was diagnosed as aggressive osteoblastoma of the cervical spine. The lesion encroached upon the radicular foramina and was located adjacent to the canal of the vertebral artery. Preoperative embolization was performed to reduce intraoperative bleeding and to prevent intraoperative injury of the vertebral artery. RESULTS A pathologic examination showed osteoblasts suggestive of osteoblastoma. At 2-year follow-up, bony union was achieved, and there was no evidence of recurrence on a CT scan. CONCLUSION En bloc total resection for highly vascular osteoblastoma is ideal, but this case shows that piecemeal total resection following preoperative embolization is a surgical option for highly expansive osteoblastoma.
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Affiliation(s)
- Kei Ando
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai Showa-ward, Nagoya, Aichi, 466-8550, Japan
| | - Shiro Imagama
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai Showa-ward, Nagoya, Aichi, 466-8550, Japan.
| | - Kazuyoshi Kobayashi
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai Showa-ward, Nagoya, Aichi, 466-8550, Japan
| | - Yoshihiro Nishida
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai Showa-ward, Nagoya, Aichi, 466-8550, Japan
| | - Naoki Ishiguro
- Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai Showa-ward, Nagoya, Aichi, 466-8550, Japan
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99999
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Marín Fernández AB, García Medina B, Martínez Plaza A, Aguilar-Salvatierra A, Gómez-Moreno G. Aneurysmal bone cyst of the mandible affecting the articular condyle: a case report. Clin Case Rep 2016; 4:1175-1180. [PMID: 27980757 PMCID: PMC5134212 DOI: 10.1002/ccr3.735] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 07/27/2016] [Accepted: 10/07/2016] [Indexed: 11/23/2022] Open
Abstract
Aneurysmal bone cyst (ABC) is a benign osteolytic lesion that is fast‐growing, expansile, and locally destructive. The present case is of a young girl with facial asymmetry, which had become accentuated during the previous months. A conservative treatment was performed to reduce morbidity and affectation of the lower dental nerve.
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Affiliation(s)
| | - Blas García Medina
- Oral and Maxillofacial Surgery Service Virgen de las Nieves University Hospital Granada Spain
| | | | | | - Gerardo Gómez-Moreno
- Pharmacological Research in Dentistry Group Department of Special Care in Dentistry Faculty of Dentistry University of Granada Granada Spain
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100000
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Appraisal assessment in patient-reported outcome research: methods for uncovering the personal context and meaning of quality of life. Qual Life Res 2016; 26:545-554. [PMID: 27988907 DOI: 10.1007/s11136-016-1476-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/03/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND Recent work on patient-reported outcomes (PROs) focuses on precise, brief measures, which generally convey little about what an individual's rating actually means. Individual differences in appraisal are important and relevant to PRO research. This paper highlights the advantages of integrating appraisal assessment into clinical research. METHODS The most comprehensive method for assessing appraisal, the quality of life (QOL) Appraisal Profile, includes open-ended and multiple choice questions to assess four appraisal parameters: frame of reference, sampling of experience, standards of comparison, and combinatory algorithm. We illustrate with empirical findings four classes of investigation that would benefit from appraisal assessment: methodological, interpretation of change, the backstory of resilience, and clinical applications. RESULTS A methodological investigation of HIV/AIDS patients revealed a range of cognitive schemas induced by the then-test response shift detection method, only 15% of which reflected the presumed process invoked. In this same study and in a study of people with multiple sclerosis (MS), interpretation of change in positive versus negative mental-health response shifts was characterized by different appraisal processes. In studying resilience in MS patients, patients with more reserve-building activities were more likely to use appraisals that emphasized the positive and more controllable aspects of their illness experience, as compared to lower-reserve patients. In underserved cancer patients, the QOL Appraisal Profile was used as a clinical interview to articulate current concerns and for personalized treatment decision-making to reduce burden and promote adherence. CONCLUSIONS Integrating appraisal assessment can provide a more textured, person-centered understanding of person-factors not captured by standard PROs.
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