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https://www.readbyqxmd.com/read/28226956/stability-of-the-permanently-bent-plates-used-in-mandibular-reconstructive-surgery
#1
Si-Myung Park, Deukhee Lee, Jung-Woo Lee, Youngjun Kim, Laehyun Kim, Gunwoo Noh, Si-Myung Park, Deukhee Lee, Jung-Woo Lee, Youngjun Kim, Laehyun Kim, Gunwoo Noh, Youngjun Kim, Si-Myung Park, Jung-Woo Lee, Laehyun Kim, Gunwoo Noh, Deukhee Lee
In mandibular reconstructive surgery, straight surgical plates are predominantly used for osteotomy. In this process, a straight plate is bent to fit to the shape of the patient's defect. This potentially compromises the stability of the plate because of changes in mechanical properties resulting from plastic deformation; however, the effect of plastic deformation on stability has yet been investigated. In this study, we assess the stability of three types of commonly used bent plates for two types of mandible defect cases, using three-dimensional finite element analysis (FEA)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226375/trends-in-nasal-subunit-reconstruction-by-facial-plastic-and-reconstructive-surgeons
#2
Yuna C Larrabee, David J Phillips, Anthony P Sclafani
To determine if facial plastic and reconstructive surgeons still adhere to the classic nasal subunit principle as described by Burget and Menick. Observational survey. A Weill Cornell Medicine institutional review board approved electronic survey that was sent via e-mail to active members of the American Academy of Facial Plastic and Reconstructive Surgery (AAFPRS). The survey consisted of 32 multiple-choice questions pertaining to the operative management of small (22-30%), medium (50-58%), and large (75-81%) defects of each subunit of the nose, as well as demographic, provider, and practice characteristics...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28226368/local-cutaneous-flaps-in-nasal-reconstruction
#3
Guanning Nina Lu, J David Kriet, Clinton D Humphrey
Facial plastic surgeons use a variety of reconstruction techniques to overcome challenges in restoring the function, structural integrity, and intricate nasal contour in nasal reconstruction. Local cutaneous flaps provide excellent skin texture, thickness, and color match in nasal reconstruction. They offer an excellent cosmetic appearance for small- to medium-sized defects and are preferentially utilized when feasible. This article aims to provide an updated review of local cutaneous flaps for nasal defect repair and describe the major principles related to flap selection...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28221297/optimal-epinephrine-concentration-and-time-delay-to-minimize-perfusion-in-eyelid-surgery-measured-by-laser-based-methods-and-a-novel-form-of-extended-wavelength-diffuse-reflectance-spectroscopy
#4
Rafi Sheikh, Ulf Dahlstrand, Khashayar Memarzadeh, Jonas Blohmé, Nina Reistad, Malin Malmsjö
OBJECTIVE: This study investigates the hypoperfusion effects of epinephrine in local anesthesia in eyelid surgery. A novel form of extended-wavelength diffuse reflectance spectroscopy was evaluated. METHODS: Blood perfusion in porcine eyelid flaps was measured using laser Doppler velocimetry and laser speckle contrast imaging, whereas the tissue response was measured using diffuse reflectance spectroscopy with a broad spectrum (450-1550 nm). Epinephrine was either injected cumulatively, 0...
February 17, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28220751/upper-extremity-sarcoma-impact-of-current-practice-guidelines-and-controversies-on-reconstructive-approaches
#5
Marek Dobke, Gina A Mackert
The goals of sarcoma management include both a cure and the functional preservation of involved tissues and adjacent critical structures with common opinions favoring immediate reconstruction. The question arises whether these goals are contradictory. This paper discusses the question based on the experience of 28 patients with different types of extremity sarcoma, with 24 surgically treated by the University of California San Diego (UCSD) orthopedic and plastic surgery team (2011-2016) and the collection of evidence from published practice guidelines, reviews, case studies, and clinical trials...
2017: SICOT-J
https://www.readbyqxmd.com/read/28219759/reevaluating-species-number-distribution-and-endemism-of-the-coral-genus-pocillopora-lamarck-1816-using-species-delimitation-methods-and-microsatellites
#6
P Gélin, B Postaire, C Fauvelot, H Magalon
Species delimitation methods based on genetic information, notably using single locus data, have been proposed as means of increasing the rate of biodiversity description, but can also be used to clarify complex taxonomies. In this study, we explore the species diversity within the cnidarian genus Pocillopora, widely distributed in the tropical belt of the Indo-Pacific Ocean. From 943 Pocillopora colonies sampled in the Western Indian Ocean, the Tropical Southwestern Pacific and Southeast Polynesia, representing a huge variety of morphotypes, we delineated Primary Species Hypotheses (PSH) applying the Automatic Barcode Gap Discovery method, the Poisson tree processes algorithm and the Generalized mixed Yule-coalescent model on two mitochondrial markers (Open Reading Frame and Dloop) and reconstructing a haploweb using one nuclear marker (Internal Transcribed Spacer 2)...
February 17, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28217813/-vegf-enhances-reconstruction-of-neurovascular-units-in-the-brain-after-injury
#7
Zhi-Guang Pan, Ying Mao, Feng-Yan Sun
Vascular endothelial growth factor (VEGF) was originally recognized as a substance predominantly with vascular permeability and angiogenesis. Recently, more and more evidence indicated that VEGF is expressed in the neurons of the developing and adult brains. Functional investigation demonstrated that VEGF shows several important effects on the neuronal development and physiological function. For example, VEGF accelerates the development of neurons and neural dendritic and axon growth. Besides, VEGF directly and acutely regulates the functions of multiple ion channels of the neuron membrane and changes neural excitability...
February 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28215716/validation-of-a-quantitative-susceptibility-mapping-acquisition-and-reconstruction-pipeline-using-a-new-iron-sucrose-based-mr-susceptibility-phantom
#8
Jeremy Deverdun, François Molino, Nicolas Menjot de Champfleur, Emmanuelle Le Bars
PURPOSE: Quantitative susceptibility mapping is a new technique and its processing pipeline has to be validated before clinical practice. We described an easy to build magnetic resonance (MR) susceptibility phantom based on iron sucrose. MATERIALS AND METHODS: In a plastic container, Eppendorf tubes containing increasing iron sucrose concentration ranging from 0 to 60μg Fe/mL were inserted in an agarose gel. To estimate susceptibility, multiple coronal gradient echo acquisitions were performed with varying angle of the phantom relative to the B0 field, ranging from 30 to 90°...
February 16, 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28203511/a-retrospective-look-at-integrating-a-novel-regenerative-medicine-approach-in-plastic-limb-reconstruction
#9
Edgardo R Rodriguez Collazo, Christopher R Rathbone, Brian R Barnes
Full-thickness wounds that have rendered patients candidates for amputation may require techniques that may include a combinatorial approach above traditional standard of care. The purpose of this retrospective study was to evaluate the effectiveness of an innovative approach whereby several therapies were combined to avoid amputation. Patients with full-thickness wounds who were previously recommended for amputation and were treated with the combinatorial approach of muscle flap reconstruction and concentrated bone marrow aspirate, platelet-rich plasma, INTEGRA Wound matrix, vacuum-assisted closure, and split-thickness skin grafts were assessed retrospectively...
January 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28198774/a-new-classification-of-helix-fabrication-methods-with-autogenous-costal-cartilage-in-microtia-reconstruction
#10
Zhicheng Xu, Feng Xu, Ruhong Zhang, Qun Zhang, Datao Li, Yiyuan Li
BACKGROUND: The complex architecture of the auricle poses one of the most demanding challenges for the plastic surgeon to recreate. The fabrication of the prominent helix is crucial to the final contour of the constructed ear. The success of helix carving depends greatly on the complicated characteristics of the cartilage used, which is commonly the eighth costal cartilage. The authors elaborate on the relevant details for helix sculpting based on different qualities of cartilage. METHODS: A series of 415 microtia patients underwent autogenous costal cartilage auricular reconstruction between 2012 and 2015...
February 13, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28198179/breast-reconstruction-after-mastectomy-for-breast-cancer-comparative-analysis-of-early-and-delayed-reconstruction
#11
William Seidel, Jorge Bins Ely, Daniel Ongaratto Barazzetti, Renata Della Giustina, Gustavo P Walter, Thiago A Ferri, Rosemeri Maurici, Janaína L Narciso-Schiavon
BACKGROUND: Early reconstruction after mastectomy for breast cancer with definitive implants has been widely used, especially with the evolution of conservative surgical breast cancer treatments. We aimed to identify different characteristics associated with plastic surgery, based on immediate or delayed reconstruction time and evaluate quality of life in patients undergoing mastectomy for cancer. METHODS: This is a cross-sectional analytical study that evaluated adult patients undergoing mastectomy for breast cancer and breast reconstruction in Plastic Surgery Service at a tertiary hospital...
February 14, 2017: Minerva Chirurgica
https://www.readbyqxmd.com/read/28197197/fine-motor-skill-training-enhances-functional-plasticity-of-the-corticospinal-tract-after-spinal-cord-injury
#12
Jian Liu, Xiao-Yu Yang, Wei-Wei Xia, Jian Dong, Mao-Guang Yang, Jian-Hang Jiao
Following central nervous system injury, axonal sprouts form distal to the injury site and extend into the denervated area, reconstructing neural circuits through neural plasticity. How to facilitate this plasticity has become the key to the success of central nervous system repair. It remains controversial whether fine motor skill training contributes to the recovery of neurological function after spinal cord injury. Therefore, we established a rat model of unilateral corticospinal tract injury using a pyramidal tract cutting method...
December 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/28195002/coverage-of-tendon-exposure-after-radial-forearm-free-flap-by-the-dorsoulnar-artery-perforator-flap
#13
Rémi Foissac, Marc Benatar, Olivier Dassonville, Alexandre Bozec, Gilles Poissonnet, Olivier Camuzard
Objective This study was designed to assess the effectiveness of an alternative technique using a perforator flap to manage secondary tendon exposure after a radial forearm free flap in head and neck oncologic surgery. Study Design Prospective cohort study. Setting Plastic Reconstructive Surgery Unit, Nice University Hospital, Pasteur 2 Hospital, France. Subjects and Methods Despite its numerous advantages, the radial forearm free flap is associated with significant donor site morbidity and the risk of secondary tendon exposure...
February 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28194541/undermining-plastic-surgery-as-a%C3%A2-possible-option-for-treating-basal-cell-carcinoma-of-the-forehead
#14
Georgi Tchernev, Ivan Pidakev, Ilia Lozev, Torello Lotti, Jose Carlos Cardoso, James W Patterson
Basal cell carcinoma (BCC) is the most common cutaneous cancer. Although most cases can be cured with simple surgical procedures and are associated with a good prognosis, a minority of BCCs may pose significant therapeutic challenges. This occurs mostly in cases of so-called advanced BCC, which a loosely defined term that encompasses locally advanced lesions and tumors with metastatic spread. Treatment of these cases is often complex and sometimes may need combinations of therapeutic modalities, including surgery, radiotherapy and/or targeted therapy directed towards sonic hedgehog (SHH) signaling pathways, such as vismodegib...
February 13, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28194339/prs-korea-2016-50th-anniversary-of-the-korean-society-of-plastic-and-reconstructive-surgeons-and-another-successful-congress-for-plastic-and-reconstructive-surgery
#15
EDITORIAL
https://www.readbyqxmd.com/read/28188996/dual-delivery-of-growth-factors-with-coacervate-coated-poly-lactic-co-glycolic-acid-nanofiber-improves-neovascularization-in%C3%A2-a-mouse-skin-flap-model
#16
Min Suk Lee, Taufiq Ahmad, Jinkyu Lee, Hassan K Awada, Yadong Wang, Kyobum Kim, Heungsoo Shin, Hee Seok Yang
Random skin flaps are commonly used in plastic and reconstructive surgery for patients suffering from severe or large scale wounds or in facial reconstruction. However, skin flaps are sometimes susceptible to partial or complete necrosis at the distal parts of the flaps due to insufficient blood perfusion in the defected area. In order to improve neovascularization in skin flaps, we developed an exogenous growth factor (GF) delivery platform comprised of coacervate-coated poly(lactic-co-glycolic acid) (PLGA) nanofibers...
January 30, 2017: Biomaterials
https://www.readbyqxmd.com/read/28188166/fournier-s-gangrene-diagnosis-and-management-aided-by-repeated-clinical-examination-and-ultrasound
#17
Jayan George, Aditya Raja, David Chun Hei Li, Hrishi Joshi
We describe a case of a man aged 57 years admitted to our tertiary centre via his general practitioner, presenting with a 1-week history of scrotal pain, testicular swelling and fluctuance. He was initially managed in the community with flucoclaxacillin for 1 week, but failed to respond to treatment. Clinical history was suggestive of Fournier's gangrene, but initial examination was not conclusive. Repeated examination over the next hour aided diagnosis and helped to track the progression of the condition...
February 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28177978/the-relationship-between-geographic-access-to-plastic-surgeons-and-breast-reconstruction-rates-among-women-undergoing-mastectomy-for-cancer
#18
Andrew R Bauder, Cary P Gross, Brigid K Killelea, Paris D Butler, Stephen J Kovach, Justin P Fox
INTRODUCTION: Despite a national health care policy requiring payers to cover breast reconstruction, rates of postmastectomy reconstruction are low, particularly among minority populations. We conducted this study to determine if geographic access to a plastic surgeon impacts breast reconstruction rates. METHODS: Using 2010 inpatient and ambulatory surgery data from 10 states, we identified adult women who underwent mastectomy for breast cancer. Data were aggregated to the health service area (HSA) level and hierarchical generalized linear models were used to risk-standardize breast reconstruction rates (RSRR) across HSAs...
March 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28177969/zika-virus-practical-information-for-the-plastic-and-reconstructive-surgeon
#19
Nicholas A Calotta, Justin M Sacks, Anand R Kumar
The ongoing Zika virus outbreak in South, Central, and, most recently, North America has become a global health care emergency. Originally thought to be a benign, self-limiting viral syndrome, the newest epidemic has provided convincing evidence that maternal Zika virus infection can lead to neonatal malformations, the so-called congenital Zika syndrome. The alarming number of microcephalic neonates being born during the current outbreak is most notable, though several other anomalies, such as arthrogryposis, redundant scalp tissue, and cranial collapse, have been reported...
February 8, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28167665/microbial-strain-level-population-structure-and-genetic-diversity-from-metagenomes
#20
Duy Tin Truong, Adrian Tett, Edoardo Pasolli, Curtis Huttenhower, Nicola Segata
Among the human health conditions linked to microbial communities, phenotypes are often associated with only a subset of strains within causal microbial groups. While it has been critical for decades in microbial physiology to characterize individual strains, this has been challenging when using culture-independent high-throughput metagenomics. We introduce StrainPhlAn, a novel metagenomic strain identification approach, and apply it to characterize the genetic structure of thousands of strains from >125 species in >1,500 gut metagenomes drawn from populations spanning North/South American, European, Asian, and African countries...
February 6, 2017: Genome Research
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