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https://www.readbyqxmd.com/read/29208853/investigations-of-cartilage-matrix-degeneration-in-patients-with-early-stage-femoral-head-necrosis
#1
Ronghua Xu, Bo Wei, Jiayi Li, Chenyu Huang, Rongcai Lin, Cheng Tang, Yan Xu, Qingqiang Yao, Liming Wang
BACKGROUND The purpose of this study was to explore changes in cartilage matrix in early-stage femoral head necrosis (FHN). MATERIAL AND METHODS Femoral head samples of patients with early FHN were collected during total hip arthroplasty (THA), high-field 7.0T MRI scans were performed in vitro, and the average T2 values were calculated. Cartilage samples were obtained from the weight-bearing area (FHN group) and non-weight-bearing area (Control group), divided into 3 equal parts and used for biochemical analysis, histopathological staining, and gene expression analysis...
December 6, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29205621/multiparametric-characterization-of-response-to-anti-angiogenic-therapy-using-uspio-contrast-enhanced-mri-in-combination-with-dynamic-contrast-enhanced-mri
#2
Jana Kim, Eugene Kim, Leslie R Euceda, Dan E Meyer, Karina Langseth, Tone F Bathen, Siver A Moestue, Else Marie Huuse
BACKGROUND: Steady state susceptibility contrast (SSC)-MRI provides information on vascular morphology but is a rarely used method. PURPOSE: To investigate the utility of the ultrasmall superparamagnetic iron oxide particles (USPIOs) GEH121333 for measuring tumor response to bevacizumab and compare this with gadolinium-based DCE-MRI. STUDY TYPE: Prospective preclinical animal model study. ANIMAL MODEL: Mice bearing subcutaneous TOV-21G human ovarian cancer xenografts treated with bevacizumab (n = 9) or saline (n = 9)...
December 4, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29203430/optimization-of-perioperative-management-of-proximal-femoral-fracture-in-the-elderly
#3
REVIEW
P Merloz
Proximal femoral fracture in elderly subjects is a major event that is life-threatening in the medium-to-long term. Advanced age, male gender and number of comorbidities largely account for high mortality and require geriatric expertise. Protein-energy malnutrition and bone demineralization increase mortality. Mortality can, on the other hand, be reduced by acting on two variables accessible to medical intervention: daily activities and nutritional status. Functional and neurocognitive assessment allow the risk of dependency to be evaluated, and global geriatric work-up can prevent sudden breakdown of homeostasis...
December 1, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29199087/primary-total-knee-arthroplasty-for-acute-fracture-around-the-knee
#4
REVIEW
S Parratte, M Ollivier, J-N Argenson
Relatively poor results have been reported with open reduction and internal fixation of complex fractures around the knee in elderly osteoporotic patients, and primary total knee arthroplasty (TKA) has been proposed as an alternative solution. While limiting the number of procedures, it meets two prerequisites: 1) to save the patient's life, thanks to early weight-bearing, to limit decubitus complications; and 2) to save knee function and patient autonomy, thanks to early knee mobilization. There are 3 main indications: complex articular fractures in elderly patients with symptomatic osteoarthritis prior to fracture; complex articular fractures of the tibial plateau in elderly patients whose bone quality makes internal fixation hazardous; and major destruction of the distal femur in younger patients...
November 30, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29194049/preserving-the-shoulder-function-of-an-elite-para-triathlete-a-case-report
#5
Robert Diaz, Allison H Stoll, Monica E Rho, Cheri A Blauwet
Shoulder pain in wheelchair users that participate in competitive adaptive sports can be a troublesome condition. Shoulder pain not only affects athletic performance, but also functional activities such as wheelchair propulsion and weight bearing during transfers. Managing pain in these athletes thus presents a unique challenge due to the difficulty in achieving relative rest and the need to modify athletic shoulder-focused rehabilitation strategies. In all athletes, it is vital to establish an early, accurate diagnosis and optimize conservative treatment prior to considering surgical interventions in order to avoid excessive shoulder-related morbidity, loss of function, and worse - loss of independence...
November 29, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29188422/climbing-plants-attachment-adaptations-and-bioinspired-innovations
#6
REVIEW
Jason N Burris, Scott C Lenaghan, C Neal Stewart
Climbing plants have unique adaptations to enable them to compete for sunlight, for which they invest minimal resources for vertical growth. Indeed, their stems bear relatively little weight, as they traverse their host substrates skyward. Climbers possess high tensile strength and flexibility, which allows them to utilize natural and manmade structures for support and growth. The climbing strategies of plants have intrigued scientists for centuries, yet our understanding about biochemical adaptations and their molecular undergirding is still in the early stages of research...
November 29, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/29181261/functional-outcomes-of-hip-arthroscopy-in-an-active-duty-military-population-utilizing-a-criterion-based-early-weight-bearing-progression
#7
K Aaron Shaw, Jeremy M Jacobs, J Richard Evanson, Josh Pniewski, Michelle L Dickston, Terry Mueller, John A Bojescul
Introduction: Hip arthroscopy allows surgeons to address intra-articular pathology of the hip while avoiding more invasive open surgical dislocation. However the post-operative rehabilitation protocols have varied greatly in the literature, with many having prolonged periods of limited motion and weight bearing. Purpose: The purpose of this study was to describe a criterion-based early weight bearing protocol following hip arthroscopy and investigate functional outcomes in the subjects who were active duty military...
October 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29175717/tibio-calcaneal-fusion-by-retrograde-intramedullary-nailing-in-charcot-neuroarthropathy
#8
Khaled M Emara, Ramy Ahmed Diab, Mohamed Amr Hemida
INTRODUCTION: Charcot's neuroarthropathy of ankle leads to instability, destruction of the joint with significant morbidity that may require an amputation. Aim of surgical treatment is to achieve painless stable plantigrade foot through arthrodesis. Achieving surgical arthrodesis in Charcot's neuroarthropathy has a high failure rate. We assess the outcomes of retrograde intramedullary interlocked nailing in tibio-talar arthrodesis for Charcot's neuroarthropathy. MATERIALS AND METHODS: 42 diabetic patients with a mean age of 49 year underwent ankle tibio-talar arthrodesis using retrograde nailing for Charcot's neuroarthropathy...
November 7, 2017: Foot
https://www.readbyqxmd.com/read/29167666/first-year-of-israeli-newborn-screening-for-severe-combined-immunodeficiency-clinical-achievements-and-insights
#9
Erez Rechavi, Atar Lev, Amos J Simon, Tali Stauber, Suha Daas, Talia Saraf-Levy, Arnon Broides, Amit Nahum, Nufar Marcus, Suhair Hanna, Polina Stepensky, Ori Toker, Ilan Dalal, Amos Etzioni, Shlomo Almashanu, Raz Somech
Severe combined immunodeficiency (SCID), the most severe form of T cell immunodeficiency, is detectable through quantification of T cell receptor excision circles (TRECs) in dried blood spots obtained at birth. Herein, we describe the results of the first year of the Israeli SCID newborn screening (NBS) program. This important, life-saving screening test is available at no cost for every newborn in Israel. Eight SCID patients were diagnosed through the NBS program in its first year, revealing an incidence of 1:22,500 births in the Israeli population...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29151916/early-changes-in-the-apparent-diffusion-coefficient-and-mmp-9-expression-of-a-cervical-carcinoma-u14-allograft-model-following-irradiation
#10
Yecai Huang, Jianming Huang, Mei Feng, Jing Ren, Kun Mi, Jia Cheng, Bing Song, Jinyi Lang
A cervical carcinoma allograft model was designed to assess the correlation between early changes in the apparent diffusion coefficient (ADC) values on diffusion-weighted magnetic resonance imaging (DW-MRI) and the expression of matrix metalloproteinase-9 (MMP-9) in tumors. BALB/c mice with U14 tumor allografts on the right rear flank were irradiated with a single 20 Gy dose. All tumor-bearing mice were subjected to DW-MRI, followed by calculation of the ADC values and characterization of the T1 and T2 relaxation time constants...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29149700/protective-role-of-biosynthesized-silver-nanoparticles-against-early-blight-disease-in-solanum-lycopersicum
#11
Madhuree Kumari, Shipra Pandey, Arpita Bhattacharya, Aradhana Mishra, C S Nautiyal
Tomato suffers a huge loss every year because of early blight disease. This study focuses on efficient inhibition of Alternaria solani, the causative agent of early blight disease in tomato in vitro and in vivo. Foliar spray of 5 μg/mL of biosynthesized silver nanoparticles in A. solani infected plants resulted in significant increase of 32.58% in fresh weight and 23.52% in total chlorophyll content of tomato as compared to A. solani infected plants. A decrease of 48.57, 30, 39.59 and 28.57% was observed in fungal spore count, lipid peroxidation, proline content and superoxide dismutase respectively in infected tomato plants after treatment with synthesized silver nanoparticles as compared to A...
November 10, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29134816/liquifying-pldlla-anchor-fixation-in-achilles-reconstruction-for-insertional-tendinopathy
#12
Stephanie A Boden, Allison L Boden, Danielle Mignemi, Jason T Bariteau
Insertional Achilles tendinopathy (IAT) is a frequent cause of posterior heel pain and is often associated with Haglund's deformity. Surgical correction for refractory cases of IAT has been well studied; however, the method of tendon fixation to bone in these procedures remains controversial, and to date, no standard technique has been identified for tendon fixation in these surgeries. Often, after Haglund's resection, there is large exposed cancellous surface for Achilles reattachment, which may require unique fixation to optimize outcomes...
November 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29098573/diet-and-exercise-a-match-made-in-bone
#13
REVIEW
Hubertine M E Willems, Ellen G H M van den Heuvel, Ruud J W Schoemaker, Jenneke Klein-Nulend, Astrid D Bakker
PURPOSE OF REVIEW: Multiple dietary components have the potential to positively affect bone mineral density in early life and reduce loss of bone mass with aging. In addition, regular weight-bearing physical activity has a strong positive effect on bone through activation of osteocyte signaling. We will explore possible synergistic effects of dietary components and mechanical stimuli for bone health by identifying dietary components that have the potential to alter the response of osteocytes to mechanical loading...
November 2, 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/29066105/in%C3%A2-vivo-kinematic-comparison-of-a-bicruciate-stabilized-total-knee-arthroplasty-and-the-normal-knee-using-fluoroscopy
#14
Trevor F Grieco, Adrija Sharma, Garett M Dessinger, Harold E Cates, Richard D Komistek
BACKGROUND: The bicruciate stabilized (BCS) total knee arthroplasty (TKA) features asymmetrical bearing geometry and dual substitution for the anterior cruciate ligament and posterior cruciate ligament (PCL). Previous TKA designs have not fully replicated normal knee motion, and they are characterized by lower magnitudes of overall rollback and axial rotation than the normal knee. METHODS: In vivo kinematics were derived for 10 normal knees and 40-second generation BCS TKAs all implanted by a single surgeon...
September 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29061135/prognostic-factors-for-recovery-following-acute-lateral-ankle-ligament-sprain-a-systematic-review
#15
Jacqueline Yewande Thompson, Christopher Byrne, Mark A Williams, David J Keene, Micheal Maia Schlussel, Sarah E Lamb
BACKGROUND: One-third of individuals who sustain an acute lateral ankle ligament sprain suffer significant disability due to pain, functional instability, mechanical instability or recurrent sprain after recovery plateaus at 1 to 5 years post injury. The identification of early prognostic factors associated with poor recovery may provide an opportunity for early-targeted intervention and improve outcome. METHODS: We performed a comprehensive search of AMED, EMBASE, Psych Info, CINAHL, SportDiscus, PubMed, CENTRAL, PEDro, OpenGrey, abstracts and conference proceedings from inception to September 2016...
October 23, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29057339/composite-peek-carbon-fiber-implants-can-increase-the-effectiveness-of-radiotherapy-in-the-management-of-spine-tumors
#16
Giuseppe Tedesco, Alessandro Gasbarrini, Stefano Bandiera, Riccardo Ghermandi, Stefano Boriani
BACKGROUND: Combination of surgery and radiotherapy in the treatment of primary spine tumour can be indicated in some cases where a satisfactory oncological margin cannot be achieved. The presence of metal hardware has always limited post-operative radiotherapy due to the scattering effects of ionizing radiation or particles. The use of a fixation system (including rods and screw) fully made in PEEK embedded Carbon fiber (CFR-PEEK) could make easier and more effective the post-operative radiotherapy as it is radiolucent and does not interfere with ionizing radiation and accelerated particles...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29038897/-acute-achilles-tendon-rupture-state-of-the-art
#17
REVIEW
M Braunstein, S F Baumbach, V Herterich, W Böcker, H Polzer
The most favorable treatment for acute Achilles tendon ruptures remains controversial. In particular, three key questions are intensively debated: is operative or non-operative treatment superior? If surgery is performed, should open or minimally invasive percutaneous techniques be used? How should the follow-up treatment be carried out? The aim of this article is to answer these essential questions based on the currently available evidence. Non-operative treatment leads to a higher rate of re-ruptures and inferior functional results when compared to operative treatment...
October 16, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29033844/syngeneic-b16f10-melanoma-causes-cachexia-and-impaired-skeletal-muscle-strength-and-locomotor-activity-in-mice
#18
Fabrício A Voltarelli, Fernando T Frajacomo, Camila de Souza Padilha, Mayra T J Testa, Paola S Cella, Diogo F Ribeiro, Donizete X de Oliveira, Luciana C Veronez, Gabriela S Bisson, Felipe A Moura, Rafael Deminice
Muscle wasting has been emerging as one of the principal components of cancer cachexia, leading to progressive impairment of work capacity. Despite early stages melanomas rarely promotes weight loss, the appearance of metastatic and/or solid tumor melanoma can leads to cachexia development. Here, we investigated the B16F10 tumor-induced cachexia and its contribution to muscle strength and locomotor-like activity impairment. C57BL/6 mice were subcutaneously injected with 5 × 10(4) B16F10 melanoma cells or PBS as a Sham negative control...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29031985/spatial-angular-compounding-technique-for-h-scan-ultrasound-imaging
#19
Mawia Khairalseed, Fangyuan Xiong, Jung-Whan Kim, Robert F Mattrey, Kevin J Parker, Kenneth Hoyt
H-Scan is a new ultrasound imaging technique that relies on matching a model of pulse-echo formation to the mathematics of a class of Gaussian-weighted Hermite polynomials. This technique may be beneficial in the measurement of relative scatterer sizes and in cancer therapy, particularly for early response to drug treatment. Because current H-scan techniques use focused ultrasound data acquisitions, spatial resolution degrades away from the focal region and inherently affects relative scatterer size estimation...
October 11, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29022056/implant-strategy-affects-scaffold-stability-and-integrity-in-cartilage-treatment
#20
M Drobnic, Francesco Perdisa, E Kon, F Cefalì, M Marcacci, G Filardo
PURPOSE: To identify the most appropriate implantation strategy for a novel chondral scaffold in a model simulating the early post-operative phase, in order to optimize the implant procedure and reduce the risk of early failure. METHODS: Eight human cadaveric limbs were strapped to a continuous passive motion device and exposed to extension-flexion cycles (0°-90°). Chondral lesions (1.8 cm diameter) were prepared on condyles, patella and trochlea for the implant of a bi-layer collagen-hydroxyapatite scaffold...
October 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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