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https://www.readbyqxmd.com/read/27926564/systematic-review-and-meta-analysis-of-prophylactic-mesh-during-primary-stoma-formation-to-prevent-parastomal-hernia
#1
Stephen J Chapman, Benjamin Wood, Thomas M Drake, Neville Young, David G Jayne
BACKGROUND: Implantation of mesh at the time of stoma formation may reduce the rate of parastomal hernia. Until recently, the evidence has been limited to only a few small randomized controlled trials. OBJECTIVE: We present an updated systematic review and meta-analysis to assess the effect of mesh prophylaxis on rates of parastomal hernia. We examine ongoing and unpublished trials via online registries and propose recommendations for future research. DATA SOURCES: MEDLINE, EMBASE, and the Cochrane Library were searched up to March 2016 for published randomized controlled trials...
January 2017: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/27925774/influence-of-backscatter-radiation-on-cranial-reconstruction-implants
#2
Yoshiaki Sakamoto, Naoyoshi Koike, Hideyuki Takei, Mari Ohno, Tomoru Miwa, Kazunari Yoshida, Naoyuki Shigematsu, Kazuo Kishi
OBJECTIVES: We aimed to evaluate backscatter dose variations in different cranial bone implant materials in an experimental model designed to simulate postoperative radiotherapy. METHODS: We assessed the radiation backscatter doses associated with sheet and mesh type titanium plates and hydroxyapatite (HAP) samples (porosity, 35%, 50%, and 85%). The samples were irradiated with 6 MV and 10 MV photon beams from a linear accelerator. Measurements were obtained using an ionization chamber and radiochromic films cut from the same batch...
December 7, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27922983/current-construct-options-for-revision-of-large-acetabular-defects-a-systematic-review
#3
Marieke Baauw, Miranda L van Hooff, Maarten Spruit
BACKGROUND: Many treatment options are available for the revision of large acetabular defects. Debate continues as to which technique is most effective. METHODS: A systematic review was performed according to the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines to evaluate the effectiveness of interventions for large acetabular defects. Quality assessment was performed next with use of 8 items of the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist for reports of observational studies...
November 8, 2016: JBJS Reviews
https://www.readbyqxmd.com/read/27916373/antibiotic-releasing-microspheres-prevent-mesh-infection-in%C3%A2-vivo
#4
Kevin T Grafmiller, Sean T Zuckerman, Clayton Petro, Lijia Liu, Horst A von Recum, Michael J Rosen, Julius N Korley
BACKGROUND: Infection remains a dreaded complication after implantation of surgical prosthetics, particularly after hernia repair with synthetic mesh. We previously demonstrated the ability of a newly developed polymer to provide controlled release of an antibiotic in a linear fashion over 45 d. We subsequently showed that coating mesh with the drug-releasing polymer prevented a Staphylococcus aureus (SA) infection in vivo. To broaden the applicability of this technology, the polymer was synthesized as isolated "microspheres" and loaded with vancomycin (VM) before conducting a noninferiority analysis...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27915417/retrospective-analysis-of-10-000-implants-from-insertion-up-to-20%C3%A2-years-analysis-of-implantations-using-augmentative-procedures
#5
Wolfram Knöfler, Thomas Barth, Reinhard Graul, Dietmar Krampe
BACKGROUND: A sufficient amount of bone is essential to ensure long-term stability of dental implants. To support the bone regeneration process, different techniques and materials are available. It has been questioned whether these techniques and materials may compromise implant survival compared to pristine bone. To properly answer this question, long-term stability up to 20.2 years after insertion of implants placed in augmented or non-augmented sites was retrospectively analysed. METHODS: Retrospective analysis included 10,158 implants from 3095 patients in three private practices who underwent implant therapy with or without bone augmentation procedures...
December 2016: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27908574/reconstruction-of-a-post-traumatic-maxillary-ridge-using-a-radial-forearm-free-flap-and-immediate-tissue-engineering-bone-morphogenetic-protein-bone-marrow-aspirate-concentrate-and-cortical-cancellous-bone-case-report
#6
James C Melville, Ramzey Tursun, J Marshall Green, Robert E Marx
The purpose of this article is to describe reconstruction of the maxillary alveolar ridge by use of a microvascular free flap combined with an immediate tissue-engineered bone graft. This novel surgical technique involved the use of a radial forearm free flap and immediate allogeneic avascular bone graft augmented with bone morphogenetic protein and bone marrow aspirate concentrate. A poly-d,l-lactic acid mesh was used a containment unit for the bone graft. The patient was successfully treated with a viable radial forearm free flap for soft tissue and regeneration of bone with adequate height and width, which allowed the placement of 3 dental implants with excellent arch coordination...
November 9, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27902825/association-between-the-amount-of-vaginal-mesh-used-with-mesh-erosions-and-repeated-surgery-after-repairing-pelvic-organ-prolapse-and-stress-urinary-incontinence
#7
Bilal Chughtai, Matthew D Barber, Jialin Mao, James C Forde, Sharon-Lise T Normand, Art Sedrakyan
Importance: Mesh, a synthetic graft, has been used in pelvic organ prolapse (POP) repair and stress urinary incontinence (SUI) to augment and strengthen weakened tissue. Polypropylene mesh has come under scrutiny by the US Food and Drug Administration. Objective: To examine the rates of mesh complications and invasive reintervention after the placement of vaginal mesh for POP repair or SUI surgery. Design, Setting, and Participants: This investigation was an observational cohort study at inpatient and ambulatory surgery settings in New York State...
November 30, 2016: JAMA Surgery
https://www.readbyqxmd.com/read/27898348/spontaneous-endometriosis-associated-with-an-umbilical-hernia-a-case-report-and-review-of-the-literature
#8
Hishaam Ismael, Yury Ragoza, Angela Harden, Steven Cox
INTRODUCTION: Umbilical endometriosis occurring in the presence of an underlying hernia is extremely rare and presents a diagnostic challenge for the general surgeon. We present an interesting case and perform a comprehensive review of the literature. METHODS: Medline and PubMed were queried for all cases of spontaneous umbilical endometriosis associated with an umbilical hernia. Data was analyzed and is presented along with an interesting case. RESULTS: Only 7 cases have been reported in the literature...
November 15, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27893559/personalized-reconstruction-of-traumatic-orbital-defects-based-on-precise-three-dimensional-orientation-and-measurements-of-the-globe
#9
Li Huang, Lisong Lin, Zhihong Wang, Bin Shi, Xiaofeng Zhu, Yu Qiu, Yue Huang, Xueyuan Yu, Yunyang Liao
OBJECTIVE: The aim of the study was to precisely assess the severity of traumatic orbital defects and techniques for personalized orbital reconstruction. METHODS: A retrospective study was conducted in 97 patients with traumatic orbital defects who were treated in our hospital between July 2003 and June 2012. Pre- and postoperative spiral computed tomography scans were performed in all patients. A spatial orientation technique was used to measure the three-dimensional position of the globe and calculate the changes in the orbital volume...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27885781/cellular-response-of-osteoblasts-to-low-modulus-ti-24nb-4zr-8sn-alloy-mesh-structure
#10
K C Nune, R D K Misra, S J Li, Y L Hao, R Yang
Titanium alloys (Ti-6Al-4V and Ti-6Al-7Nb) are widely used for implants, which are characterized by high elastic modulus (∼110 GPa) with (α + β) structure and that may induce undesirable stress shielding effect and immune responses associated with the presence of toxic elements. In this regard, we have combined the attributes of a new alloy design and the concept of additive manufacturing to fabricate 3D scaffolds with an interconnected porous structure. The new alloy is a β-type Ti-24Nb-4Zr-8Sn (Ti2448) alloy with significantly reduced modulus...
November 25, 2016: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/27884340/use-of-an-experimental-model-to-evaluate-infection-resistance-of-meshes-in-abdominal-wall-surgery
#11
Ramón Pérez-Tanoira, C Lévano-Linares, Á Celdrán-Uriarte, M C Isea-Peña, M Sánchez De Molina, C García-Vasquez, J Esteban-Moreno
BACKGROUND: Staphylococcal species are the most common organisms causing prosthetic mesh infections, however, infections due to rapidly growing mycobacteria are increasing. This study evaluates the resistance of biomaterial for abdominal wall prostheses against the development of postoperative infection in a rat model. MATERIAL AND METHODS: In 75 rats, we intramuscularly implanted three different types of prostheses: (1) low-density polypropylene monofilament mesh (PMM), (2) high-density PMM, and (3) a composite prosthesis composed of low-density PMM and a nonporous hydrophilic film...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27878640/in-vitro-examination-of-the-biocompatibility-of-fibroblast-cell-lines-on-alloplastic-meshes-and-sterilized-polyester-mosquito-mesh
#12
R Wiessner, T Kleber, N Ekwelle, K Ludwig, D-U Richter
INTRODUCTION: The use of alloplastic implants for tissue strengthening when treating hernias is an established therapy worldwide. Despite the high incidence of hernias in Africa and Asia, the implantation of costly mesh netting is not financially feasible. Because of that various investigative groups have examined the use of sterilized mosquito netting. The animal experiments as well as the clinical trials have both shown equivalent short- and long-term results. The goal of this paper is the comparison of biocompatibility of human fibroblasts on the established commercially available nets and on sterilized polyester mosquito mesh over a period of 12 weeks...
November 23, 2016: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/27872012/biomimetic-collagen-elastin-meshes-for-ventral-hernia-repair-in-a-rat-model
#13
Silvia Minardi, Francesca Taraballi, Xin Wang, Fernando J Cabrera, Jeffrey L Van Eps, Andrew B Robbins, Monica Sandri, Michael R Moreno, Bradley K Weiner, Ennio Tasciotti
: Ventral hernia repair remains a major clinical need. Herein, we formulated a type I collagen/elastin crosslinked blend (CollE) for the fabrication of biomimetic meshes for ventral hernia repair. To evaluate the effect of architecture on the performance of the implants, CollE was formulated both as flat sheets (CollE Sheets) and porous scaffolds (CollE Scaffolds). The morphology, hydrophylicity and in vitro degradation were assessed by SEM, water contact angle and differential scanning calorimetry, respectively...
November 18, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27869556/evaluation-of-on-and-off-line-bioluminescence-tomography-system-for-focal-irradiation-guidance
#14
Bin Zhang, John W Wong, Iulian I Iordachita, Juvenal Reyes, Katriana Nugent, Phuoc T Tran, Stephen W Tuttle, Constantinos Koumenis, Ken Kang-Hsin Wang
In response to the limitations of computed tomography (CT) and cone-beam CT (CBCT) in irradiation guidance, especially for soft-tissue targets without the use of contrast agents, our group developed a solution that implemented bioluminescence tomography (BLT) as the image-guidance modality for preclinical radiation research. However, adding such a system to existing small animal irradiators is no small task. A potential solution is to utilize an off-line BLT system in close proximity to the irradiator, with stable and effective animal transport between the two systems...
November 21, 2016: Radiation Research
https://www.readbyqxmd.com/read/27861401/orbitocutaneous-fistula-secondary-to-buried-polyethylene-mesh-implant-12-years-after-injury
#15
Won-Kyung Cho, Audrey C Ko, Bobby S Korn, Don O Kikkawa
Fabric monofilament polyethylene mesh is an implant primarily used in the repair of abdominal and chest walls. However, there have been isolated reports of using this implant in facial reconstruction. The authors describe a patient who underwent prior orbital floor fracture repair with polyethylene mesh and subsequently developed a recurrent orbital abscess 12 years later. Despite incorporation of the fabric monofilament polyethylene mesh within healed bone, an orbitocutaneous fistula developed after a secondary injury, causing hyperglobus and cicatricial lower eyelid retraction...
November 15, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27837460/fixation-free-incisional-hernia-repair-in-the-elderly-our-experience-with-a-tentacle-shaped-implant
#16
Giorgio Romano, Pier Giorgio Calò, Enrico Erdas, Fabio Medas, Luca Gordini, Francesco Podda, Giuseppe Amato
BACKGROUND: Incisional hernia in aged patients represents a challenge even for experienced surgeons. Besides increased risk of complications due to comorbidities, mesh fixation and assuring a sufficient mesh overlap of the defect are the main issues in carrying out the repair. AIMS: In order to assure broader coverage of the abdominal wall and a tension- and fixation-free repair, a specifically designed prosthesis was developed for the surgical treatment of incisional hernias...
November 11, 2016: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/27834419/limitations-and-options-using-resorbable-versus-nonresorbable-membranes-for-successful-guided-bone-regeneration
#17
Nikolaos K Soldatos, Popi Stylianou, Vasiliki P Koidou, Nikola Angelov, Raymond Yukna, Georgios E Romanos
OBJECTIVE: Deficient bony ridges often complicate the implant treatment plan. Several treatment modalities are used to regenerate bone, including guided bone regeneration (GBR). The purpose of this study was to summarize the knowledge on different types of membranes available and currently used in GBR procedures in a staged approach or with simultaneous implant placement. The primary role of the membranes is to exclude epithelial and connective tissue cells from the wound area to be regenerated, and to create and maintain the space into which pluripotential and osteogenic cells are free to migrate...
November 10, 2016: Quintessence International
https://www.readbyqxmd.com/read/27829934/antibiotic-prophylaxis-in-open-inguinal-hernia-repair-a-literature-review-and-summary-of-current-knowledge
#18
REVIEW
Mateusz T Zamkowski, Wojciech Makarewicz, Jerzy Ropel, Maciej Bobowicz, Michał Kąkol, Maciej Śmietański
More than 1 million inguinal hernia repairs are performed in Europe and the US annually. Although antibiotic prophylaxis is not required in clean, elective procedures, the routine use of implants (90% of inguinal hernia repairs are performed with mesh) makes the topic controversial. The European Hernia Society does not recommend routine antibiotic prophylaxis for elective inguinal hernia repairs. However, the latest randomized controlled trial, published by Mazaki et al., indicates that the use of prophylaxis is effective for the prevention of surgical site infection...
2016: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/27828602/ventral-abdominal-wall-defect-correction-in-rats-with-contaminated-meshes
#19
Paola Zarur Varella, Nicolau Gregori Czeczko, Manoel Alberto Prestes, Alexandre Eduardo Augustin Czeczko, Marília da Cruz Fagundes, Roberta Dombroski Petisco
PURPOSE: To investigate whether there is a difference between Marlex(r) and Dynamesh PP-light Marlex(r) meshes, in the abdominal wall defect correction, on rats in contaminated surgical site. METHODS: Twenty-eight Wistar rats were divided into two groups of 14, and four subgroups of seven animals. All subgroups underwent similar surgical procedure. One group received the mesh Marlex(r) and the other Dynamesh PP-light(r) for correction of the defect. Before implanting, the meshes went through a contamination process, on which was used standard solution containing 10 UFC of Escherichia coli...
October 2016: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/27822231/comparative-efficacy-of-prolene-and-prolene-vicryl-composite-mesh-for-experimental-ventral-hernia-repair-in-dogs
#20
H Anjum, S G Bokhari, M A Khan, M Awais, Z U Mughal, H K Shahzad, F Ijaz, M I Siddiqui, I U Khan, A S Chaudhry, R Akhtar, S Aslam, H Akbar, M Asif, M K Maan, M A Khan, A Noor, W A Khan, A Ullah, M A Hayat
In this study, efficacy of two hernia mesh implants viz. conventional Prolene and a novel Prolene-Vicryl composite mesh was assessed for experimental ventral hernia repair in dogs. Twelve healthy mongrel dogs were selected and randomly divided into three groups, A, Band C (n=4). In all groups, an experimental laparotomy was performed; thereafter, the posterior rectus sheath and peritoneum were sutured together, while, a 5 × 5 cm defect was created in the rectus muscle belly and anterior rectus sheath. For sublay hernioplasty, the hernia mesh (Prolene: group A; Prolene-Vicryl composite mesh: group B), was implanted over the posterior rectus sheath...
2016: Iranian journal of veterinary research
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