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https://www.readbyqxmd.com/read/29775983/classification-and-microvascular-flap-selection-for-anterior-cranial-fossa-reconstruction
#1
James D Vargo, Wojciech Przylecki, Paul J Camarata, Brian T Andrews
BACKGROUND:  Microvascular reconstruction of the anterior cranial fossa (ACF) creates difficult challenges. Reconstructive goals and flap selection vary based on the defect location within the ACF. This study evaluates the feasibility and reliability of free tissue transfer for salvage reconstruction of low, middle, and high ACF defects. METHODS:  A retrospective review was performed. Reconstructions were anatomically classified as low (anterior skull base), middle (frontal bar/sinus), and high (frontal bone/soft tissue)...
May 18, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29775815/simultaneous-magnetic-resonance-and-optical-elastography-acquisitions-comparison-of-displacement-images-and-shear-modulus-estimations-using-a-single-vibration-source
#2
Spencer T Brinker, Steven P Kearney, Thomas J Royston, Dieter Klatt
The mechanical properties of tissue are sensitive to pathological changes, which is the basis for using dynamic elastography as a diagnostic tool. The purpose of this study is a concurrent cross-modality comparison of two dynamic elastography methods, Magnetic Resonance Elastography (MRE) and Scanning Laser Doppler Vibrometry (SLDV) using a single vibration source method. Cylindrical soft tissue mimicking specimens of Plastisol and Ecoflex are stimulated with 60, 100, 150, and 250 Hz sinusoidal vibration during imaging...
May 8, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29775296/incorporation-of-a-theranostic-two-tone-luminescent-silver-complex-into-biocompatible-agar-hydrogel-composite-for-the-eradication-of-eskape-pathogens-in-a-skin-and-soft-tissue-infection-model
#3
Miguel N Pinto, Jorge Martinez-Gonzalez, Indranil Chakraborty, Pradip K Mascharak
Microbial invasion and colonization of the skin and underlying soft tissues are among the most common types of infections, becoming increasingly prevalent in hospital settings. Systemic antibiotic chemotherapies are now extremely limited due to emergence of drug-resistant Gram-positive and multidrug-resistant Gram-negative bacterial strains. Topical administration of antimicrobials provides an effective route for the treatment of skin and soft tissue infections (SSTIs). Therefore, the development of new and effective materials for the delivery of these agents is of paramount importance...
May 18, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29775131/change-in-residual-limb-size-over-time-in-the-nu-flexsiv-socket-a-case-study
#4
Stefania Fatone, Jessica Yohay, Ryan Caldwell
BACKGROUND: This case study represented a unique opportunity wherein a long-time user of sub-ischial sockets had kept nearly every socket he wore for a decade. This individual let us borrow these sockets so we could digitize them and indirectly assess change in residual limb size over time by calculating changes in socket volume and circumferences over time. Case Description and Methods: Over a decade, the subject maintained a relatively stable body weight of 84-88 kg and received nine sub-ischial sockets...
May 1, 2018: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29774894/value-of-diffusion-weighted-imaging-for-monitoring-tissue-change-during-magnetic-resonance-guided-high-intensity-focused-ultrasound-therapy-in-bone-applications-an-ex-vivo-study
#5
Sharon L Giles, Jessica M Winfield, David J Collins, Ian Rivens, John Civale, Gail R Ter Haar, Nandita M deSouza
Background: Magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) can palliate metastatic bone pain by periosteal neurolysis. We investigated the value of diffusion-weighted imaging (DWI) for monitoring soft tissue changes adjacent to bone during MR-guided HIFU. We evaluated the repeatability of the apparent diffusion coefficient (ADC) measurement, the temporal evolution of ADC change after sonication, and its relationship with thermal parameters. Methods: Ex-vivo experiments in lamb legs ( n = 8) were performed on a Sonalleve MR-guided HIFU system...
2018: European radiology experimental
https://www.readbyqxmd.com/read/29774779/image-guided-radiation-therapy-for-post-operative-gynaecologic-cancer-patient-set-up-verification-with-and-without-implanted-fiducial-markers
#6
Donna H Murrell, Andrew Warner, Quinn Benwell, Wendy Wells, Danielle Scott, Vikram Velker, George Hajdok, David P D'Souza
BACKGROUND: Intensity modulated radiotherapy (IMRT) is increasingly being used to treat gynaecological malignancies in the postoperative setting. The purpose of this study was to evaluate the use of image-guided radiotherapy (IGRT) using cone-beam computed tomography (CBCT) with fiducial markers for daily localization. MATERIAL AND METHODS: A single institution study was performed of consecutive cervical or endometrial cancer patients receiving adjuvant external beam radiotherapy (n = 15)...
May 18, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29774763/outcomes-of-reconstruction-of-the-stage-ii-adult-acquired-flatfoot-deformity-in-older-patients
#7
Matthew S Conti, Mackenzie T Jones, Oleksandr Savenkov, Jonathan T Deland, Scott J Ellis
BACKGROUND: Reconstruction of the stage II adult-acquired flatfoot deformity (AAFD) often requires the use of multiple osteotomies and soft tissue procedures that may not heal well in older patients. The purpose of our study was to determine whether patients older than 65 years with stage II AAFD had inferior clinical outcomes or an increased number of subsequent surgical procedures after flatfoot reconstruction when compared with younger patients. METHODS: One-hundred forty consecutive feet (70 right, 70 left) with stage II AAFD in 137 patients were divided into 3 groups based on age: younger than 45 years (young; n = 21), 45 to 65 years (middle-aged; n = 87), and 65 years and older (older; n = 32)...
May 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29774650/outcomes-of-hyperglycemia-in-patients-with-and-without-diabetes-mellitus-hospitalized-for-infectious-diseases
#8
Amit Akirov, Talia Diker-Cohen, Hiba Masri-Iraqi, Hadar Duskin-Bitan, Ilan Shimon, Alexander Gorshtein
OBJECTIVE: Examine the prognostic implications of diabetes mellitus (DM) and the importance of glycemic control during hospitalization for infectious diseases. METHODS: Historical prospectively collected data of patients hospitalized between 2011-2013.Infection-related hospitalizations were classified according to site of infection. Median follow-up was 4.5 years. Outcome measures included in-hospital and end-of-follow-up mortality. RESULTS: The cohort included 8,051 patients (50% female, mean age ± SD, 68±20 years) with a primary diagnosis of an infectious disease...
May 17, 2018: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/29774645/a-novel-rapidly-self-healing-host-guest-supramolecular-hydrogel-with-high-mechanical-strength-and-excellent-biocompatibility
#9
Zhifang Wang, Yipeng Ren, Ye Zhu, Lijing Hao, Yunhua Chen, Geng An, Hongkai Wu, Xuetao Shi, Chuanbin Mao
It is still a challenge to achieve both excellent mechanical strength and biocompatibility in hydrogels. Here we exploited two interactions to form a novel biocompatible, slicing-resistant and self-healing hydrogel. One is the molecular host-guest recognition between a host (isocyanatoethyl acrylate-modified β-cyclodextrin, β-CD-AOI2) and a guest (2-(2-(2-(2-(Adamantyl-1-oxy)ethoxy)ethoxy) ethoxy)ethanol acrylate, A-TEG-Ad) to form novel "three-arm" host-guest supramolecules (HGSMs). Another is the covalent bonding between HGSMs (achieved by UV-initiated polymerization) to form a strong network in the hydrogel...
May 18, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29774401/high-levels-of-serum-sclerostin-and-dkk1-in-a-case-of-klippel-tr%C3%A3-naunay-syndrome
#10
P Muto, A Lo Gullo, G Mandraffino, S Loddo, M Atteritano
Klippel-Trénaunay syndrome (KTS) is described as a complex syndrome characterized by various combinations of capillary, venous, and lymphatic malformations associated with bone and soft tissue hypertrophy. We report a case of a 67-year-old postmenopausal Caucasian women with KTS that shows elevated levels of sclerostin and Dickkopf-related protein 1 (DKK1). Dual-energy X-ray absorptiometry (DXA) BMD T-scores at lumbar spine and femur were normal. Serum calcium and phosphorus levels were consistently normal, 25-hydroxyvitamin D (25OHD) < 30 ng/mL, and normal parathyroid hormone (PTH)...
May 17, 2018: Osteoporosis International
https://www.readbyqxmd.com/read/29774363/developmental-dysplasia-of-the-hip-why-are-we-still-operating-on-them-a-plea-for-institutional-newborn-clinical-screening
#11
Wu Chean Lee, Sumanth Kumar Gera, Arjandas Mahadev
INTRODUCTION: Developmental dysplasia of the hip (DDH) is a common orthopaedic condition at birth. Non-surgical management with Pavlik harness can effectively treat DDH with early clinical diagnosis at newborn, but open surgeries continue to be performed. We aimed to elucidate the reasons for this. METHODS: A retrospective review was performed of all open surgeries related to DDH from 2006 to 2016. Patients were either born at our institution (Group 1) or outside of it (Group 2)...
May 18, 2018: Singapore Medical Journal
https://www.readbyqxmd.com/read/29774199/malignant-metastasis-misdiagnosed-as-osteoporotic-compression-fracture-a-case-report
#12
Seul Gi Kim, Chang Il Ju, Hui Sun Wang, Seok Won Kim
In cases of vertebral collapse after a trivial injury in elderly patients with severe osteoporosis, it can be a diagnostic challenge to determine whether the cause is a benign compression fracture or malignant metastasis. A 78-year-old male patient was referred to the emergency department for the evaluation of weakness of the left lower limb. He had undergone percutaneous vertebroplasty four months earlier after being diagnosed with L3 osteoporotic compression fracture. He was treated with foraminotomy at the L3-4 level after being diagnosed with foraminal stenosis two months earlier at a spine clinic...
April 2018: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/29774178/effects-of-local-application-of-nano-silver-on-osteomyelitis-and-soft-tissue-infections-an-experimental-study-in-rats
#13
Bahattin Kemah, Gökçer Uzer, Yalçın Turhan, Burak Özturan, Bülent Kılıç, Bilge Sümbül Gültepe, Ayşe Bahar Ceyran, Selim Ertürk, Burak Aksoylu, Özlem Şenaydın, Korhan Özkan
Purpose : Bone and soft tissue infections are among the least desired complications after orthopaedic surgery. This study analysed the in vivo effects of the local application of nano-silver particles (AgNPs) [1nm = 1 billionth of a meter] in soft tissue infections. Materials-Method : An experimental osteomyelitis model was formed by inoculating both tibias of 24 rats with methicillin-resistant Staphylococcus aureus . The rats were followed without treatment for 21 days. Blood samples and tibial x-rays at day 21 confirmed the development of infection...
2018: Journal of Bone and Joint Infection
https://www.readbyqxmd.com/read/29773451/total-hip-arthroplasty-for-posttraumatic-osteoarthritis-following-acetabular-fracture-a-systematic-review-of-characteristics-outcomes-and-complications
#14
Robert D Stibolt, Harshadkumar A Patel, Samuel R Huntley, Eva J Lehtonen, Ashish B Shah, Sameer M Naranje
PURPOSE: Posttraumatic arthritis (PTA) may develop years after acetabular fracture, hindering joint function and causing significant chronic musculoskeletal pain. Given the delayed onset of PTA, few studies have assessed outcomes of delayed total hip arthroplasty (THA) in acetabular fracture patients. This study systematically reviewed the literature for outcomes of THA in patients with PTA and prior acetabular fracture. METHODS: Pubmed, EMBASE, SCOPUS, and Cochrane library were searched for articles containing the keywords "acetabular", "fracture", "arthroplasty", and "post traumatic arthritis" published between 1995 and August 2017...
April 26, 2018: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/29773426/stem-cell-transcription-factor-sox2-in-synovial-sarcoma-and-other-soft-tissue-tumors
#15
Heba Zayed, Iver Petersen
BACKGROUND: SOX2 has gained considerable interest as a pluripotency inducing gene. Co-transfection of SOX2 together with NANOG, KLF4 and c-MYC into adult fibroblasts was able to generate pluripotent stem cells. SOX2 has been reported to be expressed in synovial sarcoma, a tumor being characterized by the SS18-SSX gene fusion forming part of the SWI/SNF chromatin remodeling complex that affects histone methylation. The role of SOX2 in this tumor type as well as other soft tissue tumor entities however is still poorly characterized...
May 4, 2018: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29773424/a-device-for-high-throughput-monitoring-of-degradation-in-soft-tissue-samples
#16
D S Tzeranis, I Panagiotopoulos, S Gkouma, G Kanakaris, N Georgiou, N Vaindirlis, G Vasileiou, M Neidlin, A Gkousioudi, V Spitas, G A Macheras, L G Alexopoulos
This work describes the design and validation of a novel device, the High-Throughput Degradation Monitoring Device (HDD), for monitoring the degradation of 24 soft tissue samples over incubation periods of several days inside a cell culture incubator. The device quantifies sample degradation by monitoring its deformation induced by a static gravity load. Initial instrument design and experimental protocol development focused on quantifying cartilage degeneration. Characterization of measurement errors, caused mainly by thermal transients and by translating the instrument sensor, demonstrated that HDD can quantify sample degradation with <6 μm precision and <10 μm temperature-induced errors...
May 3, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29773423/management-of-giant-embryonic-vein-in-klippel-tr%C3%A3-naunay-syndrome
#17
Animesh Rathore, Peter Gloviczki, Haraldur Bjarnason
Klippel-Trénaunay syndrome is a rare mixed malformation characterized by congenital varicose veins, low-flow venous and lymphatic malformations, hypertrophy of soft tissue and bone, and capillary malformations. A 35-year-old man with a diagnosis of Klippel-Trénaunay syndrome presented to the clinic with significant pain and swelling in the left leg. Initial conservative management with compression therapy failed. He was then managed surgically with preoperative placement of an inferior vena cava filter (because of a history of deep venous thrombosis and pulmonary embolism), followed by resection of the lateral embryonic vein, ligation of large perforators, and excision of smaller varicosities...
May 14, 2018: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/29773338/taking-stock-a-systematic-review-of-archaeological-evidence-of-cancers-in-human-and-early-hominin-remains
#18
Kathryn J Hunt, Charlotte Roberts, Casey Kirkpatrick
This study summarizes data from 154 paleopathological studies documenting 272 archaeologically recovered individuals exhibiting skeletal or soft tissue evidence of cancer (malignant neoplastic disease) between 1.8 million years ago and 1900 CE. The paper reviews and summarizes the temporal, spatial and demographic distribution of the evidence and the methods used to provide the cancer diagnoses. Metastasis to bone is the most widely reported evidence (n = 161), followed by multiple myeloma (n = 55)...
May 14, 2018: International Journal of Paleopathology
https://www.readbyqxmd.com/read/29773331/novel-use-of-viewray-mri-guidance-for-high-dose-rate-brachytherapy-in-the-treatment-of-cervical-cancer
#19
Huaising C Ko, Jessie Y Huang, Jessica R Miller, Rupak K Das, Charles R Wallace, Anna-Maria A De Costa, David M Francis, Margaret R Straub, Bethany M Anderson, Kristin A Bradley
PURPOSE: To characterize image quality and feasibility of using ViewRay MRI (VR)-guided brachytherapy planning for cervical cancer. METHODS AND MATERIALS: Cervical cancer patients receiving intracavitary brachytherapy with tandem and ovoids, planned using 0.35T VR MRI at our institution, were included in this series. The high-risk clinical target volume (HR-CTV), visible gross tumor volume, bladder, sigmoid, bowel, and rectum contours for each fraction of brachytherapy were evaluated for dosimetric parameters...
May 14, 2018: Brachytherapy
https://www.readbyqxmd.com/read/29773227/de1sign-of-synthetic-extracellular-matrices-for-probing-breast-cancer-cell-growth-using-robust-cyctocompatible-nucleophilic-thiol-yne-addition-chemistry
#20
Laura J Macdougall, Katherine L Wiley, April M Kloxin, Andrew P Dove
Controlled, three-dimensional (3D) cell culture systems are of growing interest for both tissue regeneration and disease, including cancer, enabling hypothesis testing about the effects of microenvironment cues on a variety of cellular processes, including aspects of disease progression. In this work, we encapsulate and culture in three dimensions different cancer cell lines in a synthetic extracellular matrix (ECM), using mild and efficient chemistry. Specifically, harnessing the nucleophilic addition of thiols to activated alkynes, we have created hydrogel-based materials with multifunctional poly(ethylene glycol) (PEG) and select biomimetic peptides...
May 7, 2018: Biomaterials
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