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Synthetic Mesh

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https://www.readbyqxmd.com/read/29350744/preventing-mesh-pore-collapse-by-designing-mesh-pores-with-auxetic-geometries-a-comprehensive-evaluation-via-computational-modeling
#1
Katrina Knight, Pamela Moalli, Steven D Abramowitch
Pelvic organ prolapse meshes are exposed to predominately tensile loading conditions in vivo that can lead to pore collapse by 70-90%, decreasing overall porosity, and providing a plausible mechanism for the contraction/shrinkage of mesh observed following implantation. To prevent pore collapse, we proposed to design synthetic meshes with a macrostructure that results in auxetic behavior, the pores expand laterally, instead of contracting when loaded. Such behavior can be achieved with a range of auxetic structures/geometries...
January 19, 2018: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29335394/landscape-of-oncoplastic-breast-surgery-across-poland
#2
Agnieszka Kolacinska, Diana Hodorowicz-Zaniewska, Artur Bocian, Dariusz Michalik, Rafal Matkowski, Andrzej Kurylcio, Pawel Pyka, Michal Charytonowicz, Maciej Berkan
Oncoplastic and reconstructive techniques are essential tools in the armamentarium of contemporary breast surgeons. The aim of the study was to identify oncoplastic reconstructive patterns in breast cancer centers across Poland. A questionnaire of 18 questions was sent by email to the members of the Polish Society of Surgical Oncology and the Polish Society of Plastic, Reconstructive and Esthetic Surgery via their dedicated websites. The numbers of breast cancer patients operated on in each center ranged from 120 to 904 per year...
December 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/29335387/clear-cell-carcinoma-of-the-abdominal-wall
#3
Ewa Kostrzeba, M Barczyk, M Wichtowski, R Garstecki, D Murawa
BACKGROUND: Clear cell carcinoma in scars after cesarean section is extremely rare, with only 22 cases reported in the literature. Management of this condition needs to be further explored. Here, we report of a patient with clear cell carcinoma of the abdominal wall that developed 35 years after cesarean section. CASE REPORT: The material of the study was a group of 61 patients divided into two groups. Group I - 35 deaf or with profound sensorineural hearing loss children (the pupils of the deaf and hard of hearing school), aged 5-17 years (average 9,2 years), 14 males, 21 females, II - control group comprised 26 normal hearing patients, aged 5-16 years (average 10,4 years), 14 males, 12 females (patients of Department of Pediatric Otolaryngology, Audiology and Phoniatrics, Medical University of Lodz)...
December 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/29328140/full-color-digitized-holography-for-large-scale-holographic-3d-imaging-of-physical-and-nonphysical-objects
#4
Kyoji Matsushima, Noriaki Sonobe
Digitized holography techniques are used to reconstruct three-dimensional (3D) images of physical objects using large-scale computer-generated holograms (CGHs). The object field is captured at three wavelengths over a wide area at high densities. Synthetic aperture techniques using single sensors are used for image capture in phase-shifting digital holography. The captured object field is incorporated into a virtual 3D scene that includes nonphysical objects, e.g., polygon-meshed CG models. The synthetic object field is optically reconstructed as a large-scale full-color CGH using red-green-blue color filters...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29325835/synthetic-mesh-vs-allograft-extensor-mechanism-reconstruction-in-total-knee-arthroplasty-a-systematic-review-of-the-literature-and-meta-analysis
#5
REVIEW
David Shau, Ryan Patton, Suhag Patel, Laura Ward, George Guild
BACKGROUND: Extensor mechanism disruption after total knee arthroplasty (TKA) is a devastating complication. Reconstruction with allograft and synthetic mesh has been described. However, these reports have typically been small case series, and controversy exists with regard to which reconstruction technique is optimal. METHODS: The authors performed a systematic review using PUBMED, MEDLINE, EMBASE, BIOSIS, Clinicaltrials.gov, and Cochrane Database of Systematic Reviews identifying 14 articles meeting inclusion criteria and producing 204 knees for comparison...
January 8, 2018: Knee
https://www.readbyqxmd.com/read/29324569/does-the-vaginal-flora-modify-when-a-synthetic-mesh-is-used-for-genital-prolapse-repair-in-postmenopausal-women-a-pilot-randomized-controlled-study
#6
Edilson Benedito de Castro, Luiz Gustavo Oliveria Brito, Paulo César Giraldo, Cássia Raquel Teatin Juliato
OBJECTIVE: The vaginal flora from postmenopausal women with pelvic organ prolapse (POP) is different from younger women. We hypothesized that the decision of a surgical route using a mesh would modify the vaginal flora. The purpose of this study was to analyze the vaginal flora from postmenopausal women that were submitted to abdominal sacrocervicopexy or vaginal sacrospinous fixation. METHODS: A pilot, randomized controlled study with 50 women aged 55 to 75 years (n = 25; abdominal sacrocervicopexy + subtotal hysterectomy; n = 25 vaginal sacrospinous fixation + vaginal hysterectomy) was performed...
January 10, 2018: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/29320921/benefits-and-risks-with-acellular-dermal-matrix-adm-and-mesh-support-in-immediate-breast-reconstruction-a-systematic-review-and-meta-analysis
#7
Håkan Hallberg, Svanheidur Rafnsdottir, Gennaro Selvaggi, Annika Strandell, Ola Samuelsson, Ida Stadig, Therese Svanberg, Emma Hansson, Richard Lewin
In modern implant-based immediate breast reconstruction, it has become common to use biological acellular dermal and synthetic matrices in combination with a tissue expander or an implant. The aim of this systematic review was to examine differences in recurrence of cancer, impact on oncological treatment, health related quality of life, complications and aesthetic outcome between matrix and no matrix in immediate breast reconstruction. Systematic searches, data extraction and assessment of methodological quality were performed according to predetermined criteria...
January 10, 2018: Journal of Plastic Surgery and Hand Surgery
https://www.readbyqxmd.com/read/29303450/subcutaneous-bone-flap-storage-after-emergency-craniectomy-cost-effectiveness-and-rate-of-resorption
#8
Griffin Ernst, Fares Qeadan, Andrew P Carlson
OBJECTIVE Decompressive craniectomy is used for uncontrolled intracranial pressure in traumatic brain injury and malignant hemispheric stroke. Subcutaneous preservation of the autologous bone flap in the abdomen is a simple, portable technique but has largely been abandoned due to perceived concerns of resorption. The authors sought to characterize their experience with subcutaneous preservation of the bone flap and cranioplasty. METHODS The authors performed a retrospective single-institution review of subcutaneous preservation of the autologous bone flap after decompressive craniectomy from 2005 to 2015...
January 5, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29282115/efficacy-of-anchoring-the-four-arm-transvaginal-mesh-to-the-mid-urethra-vs-original-surgery-as-a-surgical-correction-for-stress-urine-incontinence-in-coexisting-anterior-vaginal-prolapse-grades-ii-and-iii-study-protocol-for-a-randomized-controlled-trial
#9
Zoltán Fekete, Andrea Surányi, Lórand Rénes, Gábor Németh, Zoltan Kozinszky
BACKGROUND: The prevalence of obesity with aging is escalating alarmingly; and pelvic organ prolapse (POP) and stress urinary incontinence (SUI) are now becoming a growing epidemic among the elderly. Synthetic transvaginal mesh has been employed with increasing popularity in the treatment of POP and is usually highly effective in controlling the principal symptoms of prolapse. However, studies have reported that mesh operations provide fairly unfavorable SUI cure rates. Therefore, additional anti-incontinence surgical strategies are increasingly being scrutinized to achieve better postoperative continence without any significant side-effects for patients with both POP and SUI...
December 28, 2017: Trials
https://www.readbyqxmd.com/read/29280882/the-best-of-abdominal-wall-reconstruction
#10
REVIEW
Nakul Gamanlal Patel, Imran Ratanshi, Edward W Buchel
LEARNING OBJECTIVES: After reviewing this article, the participant should be able to: 1. List major risk factors for hernia formation and for failure of primary repair. 2. Outline an algorithmic approach to anterior abdominal wall reconstruction based on the degree of contamination, components involved in the deficit, and width of the hernia defect. 3. Describe appropriate indications for synthetic and biological mesh products. 4. List common flaps used in anterior abdominal wall reconstruction, including functional restoration strategies...
January 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29256537/graft-and-mesh-use-in-vaginal-surgery
#11
Raheela Mohsin Rizvi, Novera Ghayoor Chughtai
Pelvic organ prolapse and urinary incontinence are among the most common chronic disorders in women. These are common problems whose pathogenesis remains unclear. As life expectancy increases, significantly greater number of women now present with pelvic organ prolapse and urinary incontinence requiring surgical intervention. Currently, the lifetime risk of undergoing prolapse or continence surgery is one in 11, and up to 30% of patients will require repeat reconstructive surgery and repeat surgery for incontinence in 10%...
December 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29251555/reconstruction-of-the-thoracic-wall-with-biologic-mesh-after-resection-for-chest-wall-tumors-a-presentation-of-a-case-series-and-original-technique
#12
Giuseppe D'Amico, Roberto Manfredi, Gabriela Nita, Paola Poletti, Laura Milesi, Luca Livraghi, Eugenio Poletti, Maurizio Verga, Enrico Robotti, Luca Ansaloni
INTRODUCTION: Synthetic materials have traditionally been used for tissue reconstruction in thoracic surgery. New biomaterials have been tested in other areas of surgery with good results. Non-cross-linked swine dermal collagen prosthesis has been used to reconstruct musculofascial defects in the trunk with low infection and herniation rate. MATERIAL AND METHODS: Retrospectively, we analyze our initial experience of chest wall reconstruction on large defects using a non-cross-linked swine dermal collagen matrix mesh with a thickness of 1...
December 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/29247365/full-thickness-skin-graft-vs-synthetic-mesh-in-the-repair-of-giant-incisional-hernia-a-randomized-controlled-multicenter-study
#13
L Clay, B Stark, U Gunnarsson, K Strigård
PURPOSE: Repair of large incisional hernias includes the implantation of a synthetic mesh, but this may lead to pain, stiffness, infection and enterocutaneous fistulae. Autologous full-thickness skin graft as on-lay reinforcement has been tested in eight high-risk patients in a proof-of-concept study, with satisfactory results. In this multicenter randomized study, the use of skin graft was compared to synthetic mesh in giant ventral hernia repair. METHODS: Non-smoking patients with a ventral hernia > 10 cm wide were randomized to repair using an on-lay autologous full-thickness skin graft or a synthetic mesh...
December 15, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29236898/in-vitro-analysis-of-a-local-polymeric-device-as-an-alternative-for-systemic-antibiotics-in-dentistry
#14
Talita Girio Carnaval, Flávia Gonçalves, Marcelo Munhóes Romano, Luiz Henrique Catalani, Marcia Alves Pinto Mayer, Victor Elias Arana-Chávez, Alexander Cassandri Nishida, Thais Claudino Lage, Carlos Eduardo Francci, Carlos Alberto Adde
The development of a biodegradable material with antimicrobial properties for local applications is required in the prevention and treatment of infectious diseases. The objective of this study was to produce blends of poly-L-lactide acid (PLLA) synthetic polymer associated with several antimicrobials, as an alternative in the prevention and treatment of infections, as well as to evaluate its cytotoxicity, release of antimicrobials and inhibit bacteria growth. Blends of PLLA added with 20% Amoxicillin, Metronidazole, Clindamycin or Azithromicyn were used to produce Films (F) or Meshs (M) by casting and electrospinning methods, respectively...
December 7, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29233526/no-increased-risk-of-carcinogenesis-with-mesh-based-hernia-repairs
#15
Bilal Chughtai, Art Sedrakyan, Dominique Thomas, Jialin Mao, Karyn S Eilber, J Quentin Clemens, Jennifer T Anger
BACKGROUND: The use of synthetic mesh has been placed under considerable scrutiny. We sought to evaluate whether there is a link between placement of synthetic polypropylene mesh for hernia repair and a subsequent cancer diagnosis. METHODS: Adult men undergoing mesh-based hernia repair from January 2008-December 2009 in New York State were identified and followed through December 2014. Control cohorts of men undergoing cholecystectomy and total knee replacement were control cohorts...
December 6, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/29232694/hyperbranched-poly-%C3%AF%C2%B5-lysine-substrate-presenting-the-laminin-sequence-yigsr-induces-the-formation-of-spheroids-in-adult-bone-marrow-stem-cells
#16
Valeria Perugini, Steve T Meikle, Anna L Guildford, Matteo Santin
Unlike the fibroblast-like cells formed upon monolayer culture of human mesenchymal stem cells, the natural stem cell niche of the bone marrow and other types of tissues favours the formation of 3-dimensional (3D) cell clusters. The structuring and biological activity of these clusters are regulated by the contacts established by cells with both the basement membrane and neighbour cells and results in their asymmetric division and the consequent maintenance of both a stem population and a committed progeny...
2017: PloS One
https://www.readbyqxmd.com/read/29224706/prophylactic-placement-of-permanent-synthetic-mesh-at-the-time-of-ostomy-closure-prevents-formation-of-incisional-hernias
#17
Jeremy A Warren, Lucas R Beffa, Alfredo M Carbonell, Jennifer Cull, Brent Sinopoli, Joseph A Ewing, Cedrek McFadden, Jay Crockett, William S Cobb
BACKGROUND: Reversal of an enterostomy results in a high rate of incisional hernia at the ostomy site. Prophylactic mesh reinforcement of the fascial defect is typically not considered due to the contaminated nature of the case. We present the outcomes of a series of prophylactic mesh reinforcements with retromuscular, large-pore polypropylene at the time of enterostomy reversal. METHODS: Retrospective review of all ostomy reversals was performed. All cases with placement of synthetic mesh reinforcement were identified from a prospectively maintained, hernia database...
December 7, 2017: Surgery
https://www.readbyqxmd.com/read/29223703/the-foreign-body-response-and-morphometric-changes-associated-with-mesh-style-peripheral-nerve-cuffs
#18
Michael B Christensen, Patrick A Tresco
Nerve cuffs have been used to anchor and protect penetrating electrodes in peripheral nerves and have been used as non-penetrating electrodes for neural recording and nerve stimulation. The material of choice for such applications is silicone, an inert synthetic biomaterial which elicits a minimal chronic foreign body response (FBR). While histological studies of solid silicone cuffs are available, to the best of our knowledge a comparison to other cuff designs is not well documented. Here, we describe the FBR and morphological changes that accompany nerve cuff implantation in the rat sciatic nerve by comparing a metallic mesh with and without a parylene coating to one made of silicone...
December 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29214557/laparoscopic-intraperitoneal-onlay-mesh-for-pediatric-incisional-hernia-a-case-report
#19
Maho Inoue, Shigeyoshi Aoi, Akihiro Taniguchi, Kohei Sakai, Mayumi Higashi, Shigehisa Fumino, Taizo Furukawa, Tatsuro Tajiri
BACKGROUND: The incidence of incisional hernia in pediatric patients is low in comparison with that reported in adults. In the pediatric population, primary closure has generally been favored. However, synthetic or biomedical mesh offers advantages in the repair of larger defects when primary closure is difficult. The use of laparoscopic intraperitoneal onlay mesh (IPOM) in the adult population has been well documented. In the pediatric population, a few laparoscopic approaches with direct suturing have been proposed; however, there are no reports of laparoscopic repair with the use of IPOM...
December 7, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/29204021/cranioplasty-using-autoclaved-autologous-skull-bone-flaps-preserved-at-ambient-temperature
#20
Dominic Anto, Raju Paul Manjooran, Rajeev Aravindakshan, Kumar Lakshman, Raymond Morris
Context: Decompressive craniectomy followed by cranioplasty (CP) uses autologous craniectomy flaps or synthetic materials like titanium. Sterilization and preservation methods for the autologous bone flaps continue to be the surgeon's choice. Aim: This study aimed to assess the short-term as well as long-term clinical outcomes of CP using autoclaved autologous bone grafts. Settings and Design: This retrospective observational study was performed on patients admitted in a tertiary care teaching neurosurgery department...
October 2017: Journal of Neurosciences in Rural Practice
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