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https://www.readbyqxmd.com/read/28647748/single-level-anterior-cervical-corpectomy-and-fusion-using-a-new-3d-printed-anatomy-adaptive-titanium-mesh-cage-for-treatment-of-cervical-spondylotic-myelopathy-and-ossification-of-the-posterior-longitudinal-ligament-a-retrospective-case-series-study
#1
Teng Lu, Chao Liu, Baohui Yang, Jiantao Liu, Feng Zhang, Dong Wang, Haopeng Li, Xijing He
BACKGROUND The aim of this study was to evaluate the clinical and radiological outcomes of the use of a new 3D-printed anatomy-adaptive titanium mesh cage (AA-TMC) for single-level anterior cervical corpectomy and fusion (ACCF) in patients with cervical spondylotic myelopathy (CSM) and ossification of the posterior longitudinal ligament (OPLL). MATERIAL AND METHODS We retrospectively reviewed the records of 15 consecutive patients who underwent ACCF surgeries with AA-TMC implantation. The Japanese Orthopedic Association (JOA) scoring system, a visual analogue scale (VAS), the mean intervertebral height (MIBH) of the surgical segments, and the surgical segmental angle (SSA) were recorded preoperatively, immediately after surgery and at the final follow-up visit...
June 25, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28646555/low-thrombogenic-fibrin-heparin-coating-promotes-in-vitro-endothelialization
#2
Ondřej Kaplan, Teresa Hierlemann, Stefanie Krajewski, Julia Kurz, Martina Nevoralová, Milan Houska, Tomáš Riedel, Zuzana Riedelová, Jana Zárubová, Hans P Wendel, Eduard Brynda
Long-term performance of implanted cardiovascular grafts can be ensured if living endothelium overgrows their surface. Surface modifications to implants are therefore being sought that can encourage endothelialization while preventing thrombus formation until the natural endothelium is formed. In the present study, heparin was covalently attached to a fibrin mesh grown from a PVC substrate surface by the catalytic action of surface immobilized thrombin on a fibrinogen solution. The coating prevented platelet activation, thrombin generation and clot formation, and reduced inflammatory reactions when exposed to fresh human whole blood circulating in a Chandler loop model...
June 24, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28644382/metal-ion-loaded-nanofibre-matrices-for-calcification-inhibition-in-polyurethane-implants
#3
Charanpreet Singh, Xungai Wang
Pathologic calcification leads to structural deterioration of implant materials via stiffening, stress cracking, and other structural disintegration mechanisms, and the effect can be critical for implants intended for long-term or permanent implantation. This study demonstrates the potential of using specific metal ions (MI)s for inhibiting pathological calcification in polyurethane (PU) implants. The hypothesis of using MIs as anti-calcification agents was based on the natural calcium-antagonist role of Mg(2+) ions in human body, and the anti-calcification effect of Fe(3+) ions in bio-prosthetic heart valves has previously been confirmed...
June 23, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28634690/long-term-retromuscular-and-intraperitoneal-mesh-size-changes-within-a-randomized-controlled-trial-on-incisional-hernia-repair-including-a-review-of-the-literature
#4
P Rogmark, O Ekberg, A Montgomery
Purpose Ingrowth of fibroblasts in a polypropylene mesh may cause contraction and a later recurrence. We assessed mesh contraction in intraabdominal and retromuscular implantation after incisional hernia repair. METHODS: A cohort of patients within an RCT on laparoscopic (LHR) versus open hernia repair (OHR) had their mesh borders marked with metal clips. X-ray was performed on postoperative day 1 and after 1 year. Total length, width, and dislocation were measured. A tacker fixated large-pore polypropylene mesh was used in LHR, and a retromuscular small-pore heavy-weight mesh was sutured to the midline in OHR...
June 20, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28632073/clinical-characteristics-and-laparoscopic-treatment-of-supravesical-hernia
#5
Sung Ryul Lee
AIM: Inguinal hernias may be direct or indirect, and supravesical hernias, a subtype of inguinal hernias, are often mistaken as direct hernias as their symptoms are similar. The purpose of this study was to describe the characteristics of supravesical hernias and to introduce a minimally invasive surgical method as a treatment for supravesical hernias. MATERIALS AND METHODS: Thirty-seven patients with supravesical hernias were treated using laparoscopic herniorrhaphy and wall defect suture with a mesh implant from September 2012 to December 2016 at Damsoyu hospital, Seoul, Korea...
June 20, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28631901/-female-genital-prolapse-surgery-using-ultra-lightweight-polypropylene-mesh
#6
V B Filimonov, R V Vasin, I V Vasina, A D Kaprin, A A Kostin
AIM: To compare the results of female genital prolapse (FGP) surgery via vaginal access using lightweight and ultra-lightweight polypropylene mesh. MATERIALS AND METHODS: From 2007 to 2011, 93 women aged from 46 to 71 years with II-IV stage FGP (POP-Q classification) were examined and underwent the vaginal extra-peritoneal colpopexy using polypropylene implants in the Department of Urology. Patients were divided into 2 groups. In patients of group 1 (n=50) the surgery was performed according to a newly developed technique using perforated ultra-lightweight (surface density 19 g/m2) domestically manufactured polypropylene implant...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28631613/repairing-a-bone-defect-with-a-three-dimensional-cellular-construct-composed-of-a-multi-layered-cell-sheet-on-electrospun-mesh
#7
Zhiwei Ren, Shiqing Ma, Le Jin, Zihao Liu, Deping Liu, Xu Zhang, Qing Cai, Xiaoping Yang
In addition to providing maneuverability, electrospun nanofibrous meshes can make excellent supports for constructing flexible cell sheets to regulate cell behavior by nanofiber features. With the target of bone regeneration, herein composite nanofibers with two different fiber arrangements (nestlike, random) were electrospun from a blend solution containing poly(l-lactide) (PLLA) and gelatin (1:1 in weight ratio). Unlike the non-woven morphology in a random nanofibrous mesh, PLLA/gelatin composite nanofibers in the nestlike nanofibrous mesh displayed both non-woven and parallel morphologies...
June 20, 2017: Biofabrication
https://www.readbyqxmd.com/read/28626876/optical-molecular-imaging-guided-radiation-therapy-part-2-integrated-x-ray-and-fluorescence-molecular-tomography
#8
Junwei Shi, Thirupandiyur S Udayakumar, Zhiqun Wang, Nesrin Dogan, Alan Pollack, Yidong Yang
PURPOSE: Differentiating tumor from its surrounding soft tissues is challenging for x-ray computed tomography (CT). Fluorescence molecular tomography (FMT) can directly localize the internal tumors targeted with specific fluorescent probes. A FMT system was developed and integrated onto a CT guided irradiator to improve tumor localization for image guided radiation. METHODS: The FMT system was aligned orthogonal to the cone beam CT onboard our previously developed image guided small animal arc radiation treatment system (iSMAART)...
June 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28618328/preparation-of-a-polylactic-acid-knitting-mesh-for-pelvic-floor-repair-and-in-vivo-evaluation
#9
Yao Lu, Shengnan Dong, Peihua Zhang, Xin Liu, Xungai Wang
The health warning report by the Food and Drug Administration (FDA) in 2011 has drawn attention to the need for developing a suitable bio-scaffold for repairing female pelvic from disease. This work prepared a pure polylactic acid knitting mesh (PPA) and compared its structure and properties with a commercial mesh - Surgimesh® Prolapse (SP; Aspide Medical, France). Mechanical tests showed that the PPA mesh was stronger than SP with higher breaking strength and bursting strength. The in vivo property of PPA was evaluated with an animal model...
June 1, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28617908/validation-of-single-c-arm-biplane-fluoroscopy-system-for-in-vivo-measurement-of-porcine-abdominal-strains
#10
Lindsey G Kahan, Charlotte Guertler, Jeffrey A Blatnik, Spencer P Lake
Hernia meshes significantly reduce recurrence rates in hernia repair. It's known that they affect the abdominal wall post-implantation, yet the understanding of in vivo mechanics in the mesh placement area is lacking. We established a single c-arm biplane fluoroscopic system to study strains at the interface between the mesh and repaired abdominal tissues. We aimed to validate this system for future porcine hernia repair studies. Custom MATLAB programs were written to correct for pincushion distortion, and direct linear transformation reconstructed objects in 3D...
June 15, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28616709/a-simplified-surgical-technique-for-recurrent-inguinal-hernia-repair-following-total-extraperitoneal-patch-plastic
#11
P Knyazeva, P F Alesina, P Stadelmeier, M Anaya-Cortez, M K Walz
PURPOSE: To present a new and alternative method for surgical treatment of recurrent inguinal hernia after total extraperitoneal patch plastic (TEP). METHODS: From January 2005 to September 2015, 35 patients (34 male, 1 female; mean age 65 ± 12.6 years) with recurrent inguinal hernia following TEP were operated at the Kliniken Essen-Mitte using a simplified method consisting of re-fixation of the primary mesh to the inguinal ligament by an anterior approach...
June 14, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28616116/the-pubovaginal-sling-reintroducing-an-old-friend
#12
REVIEW
Gregory G Bailly, Kevin V Carlson
The surgical management of female stress urinary incontinence (SUI) has evolved over the past century, using various techniques of retropubic colposuspensions and sling procedures. In the past two decades, the sling has become the mainstay of surgical treatment of SUI, with the synthetic midurethral sling (MUS) leading the way. With the recent concerns raised by the U.S. Food and Drug Administration (FDA) and Health Canada about the safety of vaginal surgery using mesh implants, including the MUS, urologists and gynecologists should be familiar with suitable alternatives, including the pubovaginal sling (PVS), which often incorporates autologous fascia...
June 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28616113/prevention-diagnosis-and-management-of-midurethral-mesh-sling-complications
#13
REVIEW
A Ross Hengel, Kevin V Carlson, Richard J Baverstock
Midurethral slings (MUS) are a proven effective treatment option for stress urinary incontinence (SUI) and have become the gold standard in most centres in North America. MUS implantation can be associated with risks that are common to all anti-incontinence surgeries, and others which are unique. This article reviews the intraoperative and the early and late postoperative risks associated with these procedures, with insights into their prevention, diagnosis, and management drawn from the literature and expert opinion...
June 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28608839/microgroove-and-collagen-poly-%C3%AE%C2%B5-caprolactone-nanofiber-mesh-coating-improves-the-mechanical-stability-and-osseointegration-of-titanium-implants
#14
Morshed Khandaker, Shahram Riahinezhad, Wendy R Williams, Roman Wolf
The effect of depositing a collagen (CG)-poly-ε-caprolactone (PCL) nanofiber mesh (NFM) at the microgrooves of titanium (Ti) on the mechanical stability and osseointegration of the implant with bone was investigated using a rabbit model. Three groups of Ti samples were produced: control Ti samples where there were no microgrooves or CG-PCL NFM, groove Ti samples where microgrooves were machined on the circumference of Ti, and groove-NFM Ti samples where CG-PCL NFM was deposited on the machined microgrooves...
June 13, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28607825/cranioplasty-indications-procedures-and-outcome-an-institutional-experience
#15
Syed M Andrabi, Arif H Sarmast, Altaf R Kirmani, Abdul R Bhat
BACKGROUND: Cranioplasty, the repair of a skull vault defect by insertion of an object (bone or nonbiological materials such as metal or plastic plates), is a well-known procedure in modern neurosurgery. Brain protection and cosmetic aspects are the major indications of cranioplasty. A retroprospective study was conducted for evaluating the indications, materials used, complications, and outcome of cranioplasty. METHODS: This study was prospective from August 2013 to September 2015 and retrospective from August 2010 to July 2013...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28602150/translabyrinthine-vestibular-schwannoma-resection-with-simultaneous-cochlear-implantation
#16
Austin N DeHart, William C Broaddus, Daniel H Coelho
OBJECTIVES: (1) Report a rare case of translabyrinthine resection of a sporadic vestibular schwannoma (VS) and concurrent cochlear implantation (CI). (2) Discuss pre-, intra-, and post-operative considerations in this unique patient population. (3) Describe surgical and audiologic outcomes reported in this population. METHODS: Case report and review of the literature. PubMed search 'Cochlear Implantation'[Mesh] AND ('Neuroma, Acoustic'[Mesh] OR 'VESTIBULAR SCHWANNOMA'[All Fields] OR 'SCHWANNOMA'[All Fields]) limited to humans and English language...
June 12, 2017: Cochlear Implants International
https://www.readbyqxmd.com/read/28598983/a-preclinical-evaluation-of-polypropylene-polylacticacid-hybrid-meshes-for-fascial-defect-repair-using-a-rat-abdominal-hernia-model
#17
Daniela Ulrich, Isabelle Le Teuff, Stephanie Huberlant, Patrick Carteron, Vincent Letouzey, Renaud de Tayrac
OBJECTIVES: Synthetic mesh surgery for both abdominal and urogenital hernia repair is often unsatisfactory in the long-term due to postoperative complications. We hypothesized that a semi-degradable mesh hybrid may provide more appropriate biocompatibility with comparable mechanical properties. The aim was to compare its in vivo biocompatibility with a commercial polypropylene (PP) mesh. METHODS: 72 rats were randomly allocated to either our new composite mesh (monofilament PP mesh knitted with polylactic-acid-fibers (PLA)) or to a commercially available PP mesh that was used as a control...
2017: PloS One
https://www.readbyqxmd.com/read/28594257/mri-evaluation-of-an-elastic-tpu-mesh-under-pneumoperitoneum-in-ipom-position-in-a-porcine-model
#18
A Lambertz, L C L van den Hil, A Ciritsis, R Eickhoff, N A Kraemer, N D Bouvy, A Müllen, U Klinge, U P Neumann, C D Klink
BACKGROUND: The frequency of laparoscopic approaches increased in hernia surgery over the past years. After mesh placement in IPOM position, the real extent of the meshes configurational changes after termination of pneumoperitoneum is still largely unknown. To prevent a later mesh folding it might be useful to place the mesh while it is kept under tension. Conventionally used meshes may lose their Effective Porosity under these conditions due to poor elastic properties. The aim of this study was to evaluate a newly developed elastic thermoplastic polyurethane (TPU) containing mesh that retains its Effective Porosity under mechanical strain in IPOM position in a porcine model...
June 8, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28587361/biocompatibility-of-polypropylene-mesh-scaffold-with-adipose-derived-stem-cells
#19
Hui Cheng, Yanling Zhang, Bei Zhang, Jie Cheng, Weiqi Wang, Xin Tang, Peng Teng, Yanyu Li
In this study, we investigated the rejection of the synthetic patch and human tissues in the host. We observed the growth of adipose-derived stem cells (ADSCs) cultured with polypropylene mesh in vitro. The results of flow cytometry showed that the expression of CD44, CD73, CD90, CD45, CD14 and CD34 was 98.54, 95.32, 98.49, 1.21, 3.01 and 2.14%, respectively. ADSCs were isolated from rabbit subcutaneous adipose tissue after collagenase digestion, filtration and centrifugation. The ADSCs of passage 3 were seeded onto the polypropylene mesh scaffolds...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28560512/biological-implant-for-complex-abdominal-wall-reconstruction-a-single-institution-experience-and-review-of-literature
#20
Elsa Limura, Pasquale Giordano
AIM: To present our single institution and surgeon's complex abdominal wall reconstructions (CAWR) experience with Permacol™ mesh through a non-randomized study. PATIENTS AND METHOD: Data of 51 consecutive patients were prospectively collected between 2003 and 2015. Patients had a median of 3 comorbidities (range 0-10) and 68% were Center for Disease Control class II-IV. The mean previous repair was 1.3 (range, 0-12), and 25 (44%) had a mesh in situ. The median defect size was 625 cm(2)...
May 30, 2017: World Journal of Surgery
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