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https://www.readbyqxmd.com/read/28937176/mesenchymal-stem-cell-mediated-endochondral-ossification-utilising-micropellets-and-brief-chondrogenic-priming
#1
C A Knuth, J Witte-Bouma, Y Ridwan, E B Wolvius, E Farrell
With limited autologous and donor bone graft availability, there is an increasing need for alternative graft substitutes. We have previously shown that chondrogenically priming mesenchymal stem cell (MSC) pellets for 28 d in vitro will reproducibly result in endochondral bone formation after in vivo implantation. However, pellet priming time for clinical applications is quite extensive. A micropellet (μpellet)-fibrin construct was developed and coupled, with a shorter priming period, determined by an in vitro time course experiment...
September 22, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28936610/tight-fitting-radial-head-prosthesis-does-stem-size-help-prevent-painful-loosening
#2
Pierre Laumonerie, Nicolas Reina, Claudia Gutierrez, Stephanie Delclaux, Meagan E Tibbo, Nicolas Bonnevialle, Pierre Mansat
INTRODUCTION: The most common reason for removal of well-fixed radial head prostheses is painful loosening. We hypothesised that short-stemmed prostheses, used for radial head arthroplasty, are not associated with an increased risk of implant loosening. METHODS: From 2002 to 2014, 65 patients were enrolled in a retrospective single-centre study. The radial head prostheses were classified as having either a long (30-mm) or short (16- to 22-mm) stem. The long-stemmed implants comprised 30 GUEPAR® DePuy Synthes (West Chester, PA, USA) and 20 Evolutive® Aston Medical (Saint-Etienne, France) devices; the short-stemmed implants comprised nine RECON and six STANDARD rHead® SBI-Stryker (Morrisville, PA, USA) devices...
September 21, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28934786/long-term-cost-utility-of-spinal-cord-stimulation-in-patients-with-failed-back-surgery-syndrome
#3
S Harrison Farber, Jing L Han, Aladine A Elsamadicy, Qasim Hussaini, Siyun Yang, Promila Pagadala, Beth Parente, Jichun Xie, Shivanand P Lad
BACKGROUND: Failed back surgery syndrome (FBSS) is a cause of significant morbidity for up to 40% of patients following spine surgery, and is estimated to cost almost $20 billion. Treatment options for these patients currently include conventional medical management (CMM), repeat operation, or spinal cord stimulation (SCS). Much of the published data regarding cost effectiveness of SCS comprise smaller scale randomized controlled trials (RCTs) rather than large databases capturing practices throughout the US...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28934543/long-term-results-of-intercalary-endoprosthetic-short-segment-fixation-following-extended-diaphysectomy
#4
Nicholas S Tedesco, Alexandra L Van Horn, Robert M Henshaw
Intercalary endoprosthetic reconstruction following diaphyseal resection of osseous tumors offers functional advantages through preservation of native joints adjacent to the resected defect. Use of such implants is restricted by the amount of bone available for stem fixation adjacent to the defect. This study aimed to determine whether short osseous segment fixation with acceptable outcomes and complication rate can be reliably achieved with a customized intercalary endoprosthesis following extended diaphysectomy...
September 21, 2017: Orthopedics
https://www.readbyqxmd.com/read/28932941/single-center-ventral-hernia-repair-with-porcine-dermis-collagen-implant
#5
M Boules, A T Strong, R Corcelles, I N Haskins, R Ilie, C Wathen, D Froylich, G Sharma, J Rodriguez, S Rosenblatt, K El-Hayek, M Kroh
INTRODUCTION: This study aims to evaluate the outcomes and utilization of porcine acellular dermal collagen implant (PADCI) during VHR at a large tertiary referral center. METHODS: Records of 5485 patients who underwent VIHR from June 1995 to August 2014 were retrospectively reviewed to identify patients >18 years of age who had VIHR with PADCI reinforcement. Use of multiple mesh reinforcement products, inguinal hernias, and hiatal hernias were exclusion criteria...
September 20, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28932876/effective-patellofemoral-joint-stabilization-and-low-complication-rates-using-a-hardware-free-mpfl-reconstruction-technique-with-an-intra-operative-adjustment-of-the-graft-tension
#6
Lars V von Engelhardt, Torsten Fuchs, Pia Weskamp, Joerg Jerosch
PURPOSE: Even if medial patellofemoral ligament (MPFL) reconstruction is a proven method, complications such as implant loosening, patella fractures, recurrent luxations, knee pain or knee stiffness are frequently described. Besides a correct tunnel positioning and implant-specific complications, this might be caused by difficulties with an appropriate graft tensioning. The study presented here is a necessary first step in exploring our technique of a double-limbed, hardware-free MPFL reconstruction, which provides another way to test and adjust the graft tension before permanent fastening...
September 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28931865/use-of-medroxyprogesterone-acetate-in-women-with-ovarian-endometriosis-undergoing-controlled-ovarian-hyperstimulation-for-in-vitro-fertilization
#7
Haiyan Guo, Yun Wang, Qiuju Chen, Weiran Chai, Lihua Sun, Ai Ai, Yonglun Fu, Qifeng Lyu, Yanping Kuang
This study investigated the use of medroxyprogesterone acetate (MPA) or a short protocol for controlled ovarian hyperstimulation (COH) in patients with advanced endometriosis who have normal ovarian function, and to compare cycle characteristics and pregnancy outcomes after frozen-thawed embryo transfer (FET). This was a retrospective case-control study of 244 patients with advanced endometriosis undering COH. The patients were allocated to three groups: the surgery group with MPA COH (62 patients, 71 IVF/ICSI cycles, 78 FET cycles); the aspiration group with MPA COH (85 patients had ovarian "chocolate" cysts (>3 cm) aspirated, 90 IVF/ICSI cycles, 76 FET cycles); and the short protocol group (97 patients, 101 IVF/ICSI cycles, 51 FET cycles)...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28931463/severe-streptomycin-ototoxicity-in-the-mouse-utricle-leads-to-a-flat-epithelium-but-the-peripheral-neural-degeneration-is-delayed
#8
Guo-Peng Wang, Ishani Basu, Lisa A Beyer, Hiu Tung Wong, Donald L Swiderski, Shu-Sheng Gong, Yehoash Raphael
The damaged vestibular sensory epithelium of mammals has a limited capacity for spontaneous hair cell regeneration, which largely depends on the transdifferentiation of surviving supporting cells. Little is known about the response of vestibular supporting cells to a severe insult. In the present study, we evaluated the impact of a severe ototoxic insult on the histology of utricular supporting cells and the changes in innervation that ensued. We infused a high dose of streptomycin into the mouse posterior semicircular canal to induce a severe lesion in the utricle...
September 11, 2017: Hearing Research
https://www.readbyqxmd.com/read/28931024/formal-comment-to-toyota-et-al-short-versus-prolonged-dual-antiplatelet-therapy-dapt-duration-after-coronary-stent-implantation-a-comparison-between-the-dapt-study-and-9-other-trials-evaluating-dapt-duration
#9
https://www.readbyqxmd.com/read/28931015/short-versus-prolonged-dual-antiplatelet-therapy-dapt-duration-after-coronary-stent-implantation-a-comparison-between-the-dapt-study-and-9-other-trials-evaluating-dapt-duration
#10
Toshiaki Toyota, Hiroki Shiomi, Takeshi Morimoto, Masahiro Natsuaki, Takeshi Kimura
AIMS: The Dual Antiplatelet Therapy (DAPT) study demonstrated that DAPT beyond 1-year after drug-eluting stent (DES) implantation, as compared with aspirin therapy alone, significantly reduced the risk of major cardiovascular and cerebrovascular events, which was mainly driven by the large risk reduction for myocardial infarction (MI). We sought to compare the largest DAPT study with other trials evaluating DAPT durations after DES implantation. METHODS AND RESULTS: By a systematic literature search, we identified 9 trials comparing prolonged- versus short-DAPT in addition to the DAPT study...
2017: PloS One
https://www.readbyqxmd.com/read/28928267/impact-of-type-i-boston-keratoprosthesis-implantation-on-vision-related-quality-of-life
#11
Marcus Ang, Ryan Man, Eva Fenwick, Ecosse Lamoureux, Mark Wilkins
AIM: To determine the impact of type I Boston keratoprosthesis (KPro) implantation on vision-related quality of life (VRQoL). METHODS: Prospective study in 33 patients (mean age 56±12 years, 67% male) with bilateral corneal blindness, who underwent a KPro implantation at a single tertiary eye hospital (June 2011-July 2015). VRQoL was evaluated using the Impact of Vision Impairment Questionnaire (IVI) at baseline and at 3-6 months postsurgery, after stabilisation of best-corrected visual acuity (BCVA)...
September 19, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28927926/short-dental-implants-a-scoping-review-of-the-literature-for-patients-with-head-and-neck-cancer
#12
REVIEW
Faraj Edher, Caroline T Nguyen
STATEMENT OF PROBLEM: Dental implants can be essential in the rehabilitation of various cancer defects, but their ideal placement can be complicated by the limited dimensions of the available host bone. Surgical interventions developed to increase the amount of bone are not all predictable or successful and can sometimes be contraindicated. Short dental implants have been suggested as an alternative option in sites where longer implants are not possible. Whether they provide a successful treatment option is unclear...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28927918/the-safety-of-irreversible-electroporation-on-nerves-adjacent-to-treated-tumors
#13
Xiaomei Luo, Zilin Qin, Huimin Tao, Jian Shi, Gang Fang, Zhonghai Li, Xulong Zhou, Jibing Chen, Kecheng Xu, Jianying Zeng, Lizhi Niu
OBJECTIVES: To evaluate the safety of irreversible electroporation (IRE) on the sciatic nerve after IRE ablation of adjacent tumor. METHODS: and analysis In this study, VX2 tumors were implanted adjacent to the sciatic nerves in 26 New Zealand white rabbits. The rabbits were divided into three groups 10 days after implantation, with two treatment groups of ten rabbits each and a control group of six rabbits. In one of the treatment groups (IRE-S group), the rabbits underwent ablation with a single IRE application, and in the other group (IRE-D group) the rabbits underwent two IRE applications...
September 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28927833/modulation-of-hippocampal-activity-with-fornix-deep-brain-stimulation
#14
Paul H Stypulkowski, Scott R Stanslaski, Jonathon E Giftakis
BACKGROUND: Deep Brain Stimulation (DBS) within the Papez circuit is under investigation as a treatment for epilepsy and Alzheimer's disease. We previously reported the effects of stimulation at nodes within this network (anterior thalamic nucleus and hippocampus) on hippocampal activity in a large animal model, using a chronic implantable, clinical-grade system that permits concurrent stimulation and recording. OBJECTIVE: In this study we extended earlier work to compare the effects of fornix DBS on evoked potentials (EPs) and local field potential (LFP) activity within the hippocampus, and to assess closed-loop stimulation...
September 6, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28927732/radioactive-seed-migration-following-parotid-gland-interstitial-brachytherapy
#15
Yi Fan, Ming-Wei Huang, Yi-Jiao Zhao, Hong Gao, Jian-Guo Zhang
PURPOSE: To evaluate the incidence and associated factors of pulmonary seed migration after parotid brachytherapy using a novel migrated seed detection technique. METHODS AND MATERIALS: Patients diagnosed with parotid cancer who underwent permanent parotid brachytherapy from January 2006 to December 2011 were reviewed retrospectively. Head and neck CT scans and chest X-rays were evaluated during routine follow-up. Mimics software and Geomagic Studio software were used for seed reconstruction and migrated seed detection from the original implanted region, respectively...
September 15, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28926381/total-elbow-arthroplasty-for-distal-humeral-fractures-a-ten-year-minimum-follow-up-study
#16
Raul Barco, Philipp N Streubel, Bernard F Morrey, Joaquin Sanchez-Sotelo
BACKGROUND: Total elbow arthroplasty is commonly considered for elderly patients with comminuted distal humeral fractures. Satisfactory short-term outcomes have been reported, but long-term outcomes are unknown. Our purpose was to assess the long-term outcomes of total elbow arthroplasty after distal humeral fracture and to determine differences between elbows with or without inflammatory arthritis at the time of fracture. METHODS: Forty-four total elbow arthroplasties were performed after distal humeral fracture; those patients were followed for a minimum of 10 years and were evaluated with regard to pain, motion, Mayo Elbow Performance Scores, complications, and reoperations...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28923692/polymer-free-biolimus-a9-coated-stents-in-the-treatment-of-de-novo-coronary-lesions-with-short-dapt-9-month-angiographic-and-clinical-follow-up-of-the-prospective-multicenter-biofreedom-usa-clinical-trial
#17
Ron Waksman, Guy N Piegari, Ameer Kabour, Louis Cannon, John Wang, George Adams, Naresh Solankhi, Anthony Smeglin, Dean J Kereiakes, Roy Leiboff, Mia-Ashley Spad, Rebecca Torguson, Nina Chandra, Roshni Bastian, Jolanda DeGroot, Margaret W Kayo, Hans-Peter Stoll, Hector M Garcia-Garcia
BACKGROUND: BioFreedom is a polymer- and carrier-free drug-coated stent that delivers Biolimus A9 to the vessel wall. Our purpose was to evaluate the efficacy and safety of this DCS in patients with short-duration dual antiplatelet therapy. METHODS: The BioFreedom US IDE feasibility trial was a single-arm, open-label, prospective study of patients requiring stenting of de novo lesions. Patients received 3 months of DAPT, repeat angiography at 9 months, and clinical follow-up at multiple intervals...
July 31, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28922983/strategic-directions-in-immunoresponsive-biomaterials-in-tissue-engineering
#18
David Zaharoff, Christopher Jewell
Since its inception three to five decades ago (depending on who you ask), the field of tissue engineering has been inextricably linked with advances in biomaterials. Early developments in tissue engineering focused mainly on biocompatibility aspects. Natural and synthetic biomaterials were developed with a primary focus on maintaining cell viability prior to and shortly after the application or implantation of a seeded scaffold. Once a sufficient level of viability could be reproducibly achieved, the focus shifted to developing biomaterials with additional features, such as customized biodegradability and/or mechanical function...
September 19, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28918112/radiographic-and-clinical-comparison-of-pegged-and-keeled-glenoid-components-using-modern-cementing-techniques-midterm-results-of-a-prospective-randomized-study
#19
Christopher M Kilian, Cyrus M Press, Kevin M Smith, Daniel P O'Connor, Brent J Morris, Hussein A Elkousy, Gary M Gartsman, T Bradley Edwards
BACKGROUND: Glenoid component loosening remains a significant issue after anatomic shoulder arthroplasty. Pegged glenoid components have shown better lucency rates than keeled components in the short term; however, midterm to long-term results have not fully been determined. We previously reported early outcomes of the current randomized controlled group of patients, with higher glenoid lucency rates in those with a keeled glenoid. The purpose of this study was to evaluate the radiographic and clinical outcomes of these components at minimum 5-year follow-up...
September 13, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28916911/evaluation-of-thirty-eight-cemented-pegged-glenoid-components-with-variable-backside-curvature-two-year-minimum-follow-up
#20
Florence Dauzère, Marine Arboucalot, Julie Lebon, Fanny Elia, Nicolas Bonnevialle, Pierre Mansat
BACKGROUND: The PERFORM™ pegged glenoid system has been used for shoulder arthroplasty since 2012. This system offers multiple backside curvatures per size to better match variable patient anatomy. As a result, less reaming is required and subchondral bone is preserved-a critical factor in preventing glenoid migration and loosening, thus enhancing implant longevity. PURPOSE: The purpose of this study was to analyze all radiographic modifications around this new glenoid implant...
September 15, 2017: International Orthopaedics
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