keyword
MENU ▼
Read by QxMD icon Read
search

Artificial disc

keyword
https://www.readbyqxmd.com/read/28723737/how-to-choose-when-implants-of-adjacent-height-both-fit-the-disc-space-properly-in-single-level-cervical-artificial-disc-replacement
#1
Xin Rong, Jigang Lou, Huibo Li, Yang Meng, Hao Liu
In cervical artificial disc replacement (C-ADR), sometimes we encountered with such cases that implants of adjacent height both fit the target disc space properly. No study was available discussing the choice of implant height and the clinical outcomes under such circumstance. The purpose of this study was to evaluate the impact of different implant heights on the clinical outcomes and radiographic results when the implants of adjacent height both fit the disc space properly. This retrospective study included 34 patients underwent single-level C-ADR at the C5-C6 level at our institution...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28718168/higher-reoperation-rate-following-cervical-disc-replacement-in-a-retrospective-long-term-comparative-study-of-715-patients
#2
Martin Skeppholm, Thomas Henriques, Tycho Tullberg
PURPOSE: To evaluate rates of secondary surgical interventions in a cohort treated with fusion (ACDF), artificial disc replacement (ADR) or a posterior surgical procedure (PP) because of a cervical degenerative pathology. METHODS: 715 patients treated with any primary cervical surgical intervention between the years 2000 and 2010 were retrospectively evaluated regarding frequency of secondary surgery between the years 2000 and 2015, thus giving a follow-up time of minimum 5 years...
July 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28717846/effects-of-xylitol-and-sucrose-mint-products-on-streptococcus-mutans-colonization-in-a-dental-simulator-model
#3
Krista M Salli, Ulvi K Gürsoy, Eva M Söderling, Arthur C Ouwehand
Few laboratory methods exist for evaluating the cariogenicity of food ingredients. In this study, a dental simulator was used to determine the effects of commercial sucrose and xylitol mint products on the adherence and planktonic growth of Streptococcus mutans. Solutions (3% w/v) of sucrose, xylitol, sucrose mints, xylitol mints, xylitol with 0.02% peppermint oil (PO), and 0.02% PO alone were used to test the levels of planktonic and adhered S. mutans. A dental simulator with continuous artificial saliva flow, constant temperature, and mixing was used as a test environment and hydroxyapatite (HA) discs were implemented into the model to simulate the tooth surface...
July 17, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28679056/self-healing-dynamic-hydrogel-as-injectable-shock-absorbing-artificial-nucleus-pulposus
#4
Adrián Pérez-San Vicente, Marianna Peroglio, Manuela Ernst, Pablo Casuso, Iraida Loinaz, Hans-Jürgen Grande, Mauro Alini, David Eglin, Damien Dupin
The intervertebral discs (IVDs) provide unique flexibility to the spine and exceptional shock absorbing properties under impact. The inner core of the IVD, the nucleus pulposus (NP) is responsible for this adaptive behavior. Herein, we evaluate an injectable, self-healing dynamic hydrogel (DH) based on gold(I)-thiolate/disulfide (Au-S/SS) exchange as NP replacement in a spine motion segment model. For the first time, we report the application of dynamic covalent hydrogels inside biological tissues. The dynamic exchange between Au-S species and disulfide bonds (SS) resulted in self-healing ability and frequency-dependent stiffness of the hydrogel, which was also confirmed in spine motion segments...
July 19, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28673830/motion-preservation-following-total-lumbar-disc-replacement-at-the-lumbosacral-junction-a-prospective-long-term-clinical-and-radiographic-investigation
#5
Christoph Wuertinger, Raphael Dàgostino Annes, Wolfgang Hitzl, Christoph J Siepe
BACKGROUND CONTEXT: Total lumbar disc replacement (TDR) intends to avoid fusion related negative side effects by means of motion preservation. Despite of their widespread use, the adequate quality and quantity of motion as well as the correlation between radiographic data with the patient's clinical symptomatology remains to be established. Long-term data are lacking in particular. PURPOSE: To perform a clinical and radiographic long-term investigation following TDR with special emphasis on motion preservation assessment and to establish any potential correlation with patient reported outcome parameters...
June 30, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28617725/depth-profile-assessment-of-the-early-phase-deposition-of-lysozyme-on-soft-contact-lens-materials-using-a-novel-in-vitro-eye-model
#6
Han Qiao, Chau-Minh Phan, Hendrik Walther, Lakshman N Subbaraman, Lyndon Jones
OBJECTIVE: To characterize the location of fluorescently labeled lysozyme on commercial contact lenses (CLs) using an in vitro eye model that simulates tear volume, tear flow, air exposure, and mechanical wear. METHODS: One commercially available conventional hydrogel CL material (etafilcon A) and three silicone hydrogel CL materials (balafilcon A, lotrafilcon B, and senofilcon A) were evaluated in this study. The CLs were mounted on the in vitro eye model and exposed to artificial tear fluid containing fluorescein isothiocyanate (FITC)-labeled lysozyme for 2 and 10 hrs...
June 14, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28614250/the-prevalence-of-heterotopic-ossification-among-patients-after-cervical-artificial-disc-replacement-a-systematic-review-and-meta-analysis
#7
REVIEW
Lingde Kong, Qinghua Ma, Fei Meng, Junming Cao, Kunlun Yu, Yong Shen
BACKGROUND: Prevalence estimates of heterotopic ossification (HO) following cervical artificial disc replacement (ADR) varied widely in previous studies. We conducted a systematic review and meta-analysis to summarize its point prevalence. METHODS: Electronic searches of PubMed, Web of Science, Embase, and Cochrane Library databases were conducted to identify studies that reported prevalence of HO. Definitions of HO and severe HO were based on McAfee grading system...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28597519/feasibility-study-on-robot-assisted-retinal-vascular-bypass-surgery-in-an-ex%C3%A2-vivo-porcine-model
#8
Yi Qi Chen, Ji Wei Tao, Liang Li, Jian Bo Mao, Chen Ting Zhu, Ji Meng Lao, Yang Yang, Li-Jun Shen
PURPOSE: To describe a new robot-assisted surgical system for retinal vascular bypass surgery (RVBS) and to compare the success rate with freehand RVBS. METHODS: A robot-assisted system for retinal microsurgery was constructed to include two independent robotic arms. A 23-gauge light probe and an intraocular forceps were affixed to the arm end effectors to perform the intraocular manipulation. Harvested porcine eyes were introduced to be established animal models of closed-sky eyeballs after that pars plana vitrectomy using temporary keratoprosthesis was performed by a skilful surgeon...
June 9, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28597366/finite-element-model-predicts-the-biomechanical-performance-of-cervical-disc-replacement-and-fusion-hybrid-surgery-with-various-geometry-of-ball-and-socket-artificial-disc
#9
Yang Li, Guy R Fogel, Zhenhua Liao, Weiqiang Liu
PURPOSE: Few finite element studies have investigated changes in cervical biomechanics with various prosthesis design parameters using hybrid surgery (HS), and none have investigated those combined different HS strategies. The aim of our study was to investigate the effect of ball-and-socket prosthesis geometry on the biomechanical performance of the cervical spine combined with two HS constructs. METHODS: Two HS strategies were conducted: (1) ACDF at C4-C5 and anterior cervical disc replacement (ACDR) at C5-C6 (ACDF/ACDR), and (2) ACDR/ACDF...
June 8, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28582418/an-in-vivo-comparison-study-in-goats-for-a-novel-motion-preserving-cervical-joint-system
#10
Jie Qin, Chenguang Zhao, Dong Wang, Bo Zhao, Jun Dong, Haopeng Li, Rongxia Sang, Shuang Wang, Jiao Fu, Rangrang Kong, Xijing He
Cervical degenerative disease is one of the most common spinal disorders worldwide, especially in older people. Anterior cervical corpectomy and fusion (ACCF) is a useful method for the surgical treatment of multi-level cervical degenerative disease. Anterior cervical disc replacement (ACDR) is considered as an alternative surgical method. However, both methods have drawbacks, particularly the neck motion decrease observed after arthrodesis, and arthroplasty should only be performed on patients presenting with cervical disc disease but without any vertebral body disease...
2017: PloS One
https://www.readbyqxmd.com/read/28574978/adjacent-segment-degeneration-following-anterior-cervical-discectomy-and-fusion-versus-the-bryan-cervical-disc-arthroplasty
#11
Suo-Zhou Yan, Jun Di, Yong Shen
BACKGROUND Anterior cervical discectomy and fusion (ACDF) is an established treatment for degenerative disease of the cervical disc, but adjacent segment degeneration or instability may develop long term. The aim of this study was to investigate the risk factors for adjacent segment degeneration following ACDF compared with the use of the Bryan artificial disc for cervical disc arthroplasty (CDA). MATERIAL AND METHODS A prospective comparative study included 93 patients who underwent ACDF or CDA with the Bryan artificial cervical disc between 2002 and 2004, and who had more than eight years of follow-up...
June 2, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28574094/effect-of-storage-medium-and-aging-duration-on-mechanical-properties-of-self-adhesive-resin-based-cements
#12
Anja Liebermann, Nicoleta Ilie, Malgorzata Roos, Bogna Stawarczyk
BACKGROUND: The aim of this study was to investigate the effects of storage medium and aging duration on Martens hardness (HM) and indentation modulus (EIT) of self-adhesive resin-based cements (SARCs). METHODS: A total of 416 discs were fabricated from 8 SARCs (n = 52 per SARC): (i) BeautyCem (BEA), (ii) Bifix SE (BIF), (iii) Clearfil SA Cement Automix (CLE), (iv) RelyX Unicem2 Automix (RXU), (v) SeT (SET), (vi) SmartCem 2 (SMC), (vii) SoloCem (SOC) and (viii) SpeedCEM (SPC)...
May 24, 2017: Journal of Applied Biomaterials & Functional Materials
https://www.readbyqxmd.com/read/28571254/quantitative-analysis-of-remineralization-of-artificial-carious-lesions-with-commercially-available-newer-remineralizing-agents-using-sem-edx-in-vitro-study
#13
Zaheer Ahmed Shaik, Tanikonda Rambabu, Girija Sajjan, Madhu Varma, Kalyan Satish, Vijayalakshmi Bhupathi Raju, Sirisha Ganguru, Nagalkashmi Ventrapati
INTRODUCTION: The basic principle of remineralization is by advocating a biological or non-invasive approach rather than the surgical approach for early enamel lesions. There are relatively newer products available for remineralization, latest being the resin-infiltration technique, commercially available as Icon. AIM: The aim of the study was to evaluate the remineralizing potential of Casein Phosphopeptide-Amorphous Calcium Phosphate (CPP-ACP), Vantej and Icon by the quantitative evaluation of mineral gain...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28536978/a-6-dof-parallel-bone-grinding-robot-for-cervical-disc-replacement-surgery
#14
Heqiang Tian, Chenchen Wang, Xiaoqing Dang, Lining Sun
Artificial cervical disc replacement surgery has become an effective and main treatment method for cervical disease, which has become a more common and serious problem for people with sedentary work. To improve cervical disc replacement surgery significantly, a 6-DOF parallel bone-grinding robot is developed for cervical bone-grinding by image navigation and surgical plan. The bone-grinding robot including mechanical design and low level control is designed. The bone-grinding robot navigation is realized by optical positioning with spatial registration coordinate system defined...
May 24, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28525471/cervical-disk-replacement-with-discover-versus-fusion-in-a-single-level-cervical-disk-disease-a-prospective-single-center-randomized-trial-with-a-minimum-2-year-follow-up
#15
Marjan Rožanković, Sergej M Marasanov, Miroslav Vukić
STUDY DESIGN: Prospective randomized study. OBJECTIVE: To compare the clinical outcome after Discover arthroplasty versus anterior cervical discectomy and fusion (ACDF) in patients treated for symptomatic single-level cervical disk disease. SUMMARY OF BACKGROUND DATA: ACDF is still the gold standard for surgical treatment of cervical spine degenerative disk disease. However, results of many studies suggest that it may cause degenerative changes at levels immediately above and below the fusion, known as adjacent segment degenerative disease...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28484578/evaluation-of-five-different-desensitizers-a-comparative-dentin-permeability-and-sem-investigation-in-vitro
#16
Nasibe Aycan Yilmaz, Ertan Ertas, Hasan Orucoğlu
BACKGROUND/OBJECTIVE: The purpose of this study was to evaluate the efficacy and durability of five different dentin desensitizers (Gluma Desensitizer Powergel, Bifluorid 12, Gluma Self Etch Bond, D/Sense Crystal, Nupro Sensodyne Prophylaxis Paste with Novamin) on tubule occlusion and dentin permeability reduction in vitro. METHOD: The quantitative changes in permeability of 100 dentin discs were measured after desensitizer treatments and following post-treatments of 6% citric acid challenge for 1 min or immersion in artificial saliva for 24 hours under hydrostatic pressure generated by a computerised fluid filtration meter...
2017: Open Dentistry Journal
https://www.readbyqxmd.com/read/28473949/minimally-invasive-anterior-cervical-discectomy-without-fusion-to-treat-cervical-disc-herniations-in-patients-with-previous-cervical-fusions
#17
Robert E Jacobson, Michelle Granville, Aldo Berti
Adjacent level cervical disc disease and secondarily progressive disc space degeneration that develops years after previously successful anterior cervical fusion at one or more levels is a common, but potentially complex problem to manage. The patient is faced with the option of further open surgery which involves adding another level of disc removal with fusion, posterior decompression, and stabilization, or possibly replacing the degenerated disc with an artificial disc construct. These three cases demonstrate that some patients, especially after minor trauma, may have small herniated discs as the cause for their new symptoms rather than progressive segmental degeneration...
April 3, 2017: Curēus
https://www.readbyqxmd.com/read/28443169/radiographic-analysis-of-the-lumbosacral-juncture-is-there-a-critical-sacral-angle-for-total-disc-replacement
#18
Rattalerk Arunakul, Melodie Metzger, Linda Kanim, Hyun Bae, Michael Kropf, Rick Delamarter
STUDY DESIGN: Retrospective review of a patient cohort through a prospective study. PURPOSE: To determine whether there are correlations between radiographic measurements, including sacral slope (SS) and pelvic incidence (PI), and self-reported clinical outcomes among single-level L5/S1 ProDisc-L patients. OVERVIEW OF LITERATURE: The lumbosacral juncture presents unique biomechanical challenges with respect to artificial disc replacement (ADR) because of its orientation and consequential shear loading...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28413754/an-approach-toward-replacing-vanadium-a-single-organic-molecule-for-the-anode-and-cathode-of-an-aqueous-redox-flow-battery
#19
Tobias Janoschka, Christian Friebe, Martin D Hager, Norbert Martin, Ulrich S Schubert
By combining a viologen unit and a 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) radical in one single combi-molecule, an artificial bipolar redox-active material, 1-(4-(((1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl)oxy)carbonyl)benzyl)-1'-methyl-[4,4'-bipyridine]-1,1'-diium-chloride (VIOTEMP), was created that can serve as both the anode (-0.49 V) and cathode (0.67 V vs. Ag/AgCl) in a water-based redox-flow battery. While it mimics the redox states of flow battery metals like vanadium, the novel aqueous electrolyte does not require strongly acidic media and is best operated at pH 4...
April 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28402735/microhardness-and-roughness-of-infiltrated-white-spot-lesions-submitted-to-different-challenges
#20
É Y Neres, M D Moda, E K Chiba, Alf Briso, J P Pessan, T C Fagundes
A white spot lesion is the first clinical sign of a caries lesion and represents mineral loss from the enamel subsurface. The purpose of this study was to evaluate the microhardness and surface roughness of white spot lesions after application of a resin infiltrant and subjection to different challenges. Caries-like lesions were induced in bovine enamel discs (n=50), and the specimens were randomly divided into five study groups (n=10): demineralized enamel (negative control, G1), infiltrated enamel (G2), infiltrated enamel submitted to brushing (G3), infiltrated enamel submitted to pH cycling (G4), and infiltrated enamel submitted to artificial aging (G5)...
July 2017: Operative Dentistry
keyword
keyword
23799
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

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

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

Use quotes to search for an exact phrase

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