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Lingyu Chen, Youxing Su, Wenbin Luo, Xuemin Hong, Jianghong Shi
The deployment density and computational power of small base stations (BSs) are expected to increase significantly in the next generation mobile communication networks. These BSs form the mobile edge network, which is a pervasive and distributed infrastructure that can empower a variety of edge/fog computing applications. This paper proposes a novel edge-computing application called explicit caching, which stores selective contents at BSs and exposes such contents to local users for interactive browsing and download...
March 22, 2018: Sensors
Ji-An Luo, Si-Wei Pan, Dong-Liang Peng, Zhi Wang, Yan-Jun Li
A constrained least-squares (CLS) 3D source localization method is presented for acoustic sensor networks with sensor position errors. The proposed approach uses angles of arrivals (AOAs) and gain ratios of arrival (GROAs) measured simultaneously at each node to estimate the source position jointly. Compared to AOA-only localization methods, the GROAs can be used in conjunction with AOA measurements so as to get more accurate results by exploiting the geometrical relationship between these two measurements...
March 22, 2018: Sensors
Tamer A El-Sobky, Shady Samir, Ahmed Naeem Atiyya, Shady Mahmoud, Ahmad S Aly, Ramy Soliman
INTRODUCTION: This systematic review aims to answer three research questions concerning the management of hereditary multiple osteochondromas of forearm in children: What is the best available evidence for the currently employed surgical procedures? What patient characteristics are associated with better prognosis? What disease characteristics are associated with better prognosis? METHODS: We searched the literature using three major databases with no publication date restrictions...
2018: SICOT-J
Sara Bermejo de Las Heras, Licia De la Calle de la Rosa, Javier Arias Díaz, Manuel Giner, Antonio Luis Blesa Malpica
BACKGROUND: Malnutrition is particularly prevalent among intensive care unit (ICU) patients, being associated with poor clinical results. Enteral nutrition (EN) offers multiple benefits on critically ill patients and its monitoring was established by the Spanish Society of Critical Care (SEMICYUC) as a clinical quality indicator (CQI; EN patients correctly monitorized / all EN patients, as %). However, no results have been published on its regulated monitoring. OBJECTIVES: Assessing CQI's compliance, identifying difficulties and possibilities for its use...
January 10, 2018: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
Lu Xu, Gordon Bosiljevac, Kyle Yu, Yi Y Zuo
Langmuir monolayer self-assembled at the air-water interface represents an excellent model for studying phase transition and lipid polymorphism in two dimensions. Compared to numerous studies of phospholipid phase transitions induced by isothermal compression, there are very scarce reports on two-dimensional phase transitions induced by isobaric heating. This is mainly due to technical difficulties of continuously regulating temperature variations while maintaining a constant surface pressure in a classical Langmuir-type film balance...
March 22, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
(no author information available yet)
In the context of the White Book of Physical and Rehabilitation Medicine (PRM) in Europe, this paper deals with the history of the PRM medical specialty. The specialty evolved in different European countries, and sometimes also into the single countries, from different medical streams that finally joined. These included among others: balneology, gymnastic, use of physical agents (water, heat, cold, massage, joint manipulations, physical exercise, etc.). Another important role has been played by the increasing number of people experiencing or likely to experience disability due to improvement of medicine and consequent survivals from wars, accidents and/or big infective epidemics (like polio); these evolutions happened in strict relationship with other specialties like cardiology, neurology, orthopaedics, pneumology, rheumatology, traumatology, creating a knowledge transversal to all of them...
April 2018: European Journal of Physical and Rehabilitation Medicine
Michalina Błażkiewicz, Ida Wiszomirska, Katarzyna Kaczmarczyk, Andrzej Wit
BACKGROUND: Falls constitute an important health issue. They cause significant morbidity, mortality and have marked psychological effects on the individual, too. The aim of this study has been to determine parameters describing human movement strategies for balance and the reaction if balance is lost as a result of an unstable ground, and to attempt to describe the types of falls. MATERIAL AND METHODS: The study group comprised 20 volunteers. Kinematic parameters of falling and dynamic stability were measured using the Vicon Motion System and the Biodex Balance System SD...
March 15, 2018: Medycyna Pracy
Camille de Seynes, Bertille de Barbeyrac, Hervé Dutronc, Clément Ribes, Paul Crémer, Véronique Dubois, Thierry Fabre, Michel Dupon, Frédéric-Antoine Dauchy
BACKGROUND: Prosthetic joint infection (PJI) is a severe complication of orthopaedic surgery. Preoperative diagnosis, although sometimes difficult, is key to choose the relevant treatment. METHODS: We conducted a prospective study aimed at evaluating the diagnostic performance of a multiplex serological test for the pre-operative diagnosis of PJI. Blood samples were collected between 1 July 2016 and 31 July 2017 among patients referred for suspected PJI that occurred at least six weeks prior...
March 22, 2018: Infectious Diseases
G C Feigl, C Mattersberger, W Rosmarin, R Likar, C Avila González
BACKGROUND: The success of radiofrequency ablation (RF) of the medial branch of the dorsal ramus in patients with facet joint pain depends on the effective coagulation distance. To date, computed tomography(CT)-guided techniques do not reach the nerve in parallel but rather than punctually. We report a new CT-guided technique to enhance parallelism and proximity of the RF needle to the nerve. MATERIALS AND METHODS: Two examiners with different experience with CT-guided procedures in corpses performed all punctures at the lumbar spine on 10 corpses...
March 21, 2018: Der Schmerz
Bruno Fautrel, Rieke Alten, Bruce Kirkham, Inmaculada de la Torre, Frederick Durand, Jane Barry, Thorsten Holzkaemper, Walid Fakhouri, Peter C Taylor
Current guidelines for the management of rheumatoid arthritis (RA) recommend early treatment and a treat-to-target goal of remission or low disease activity. Over the past decade, this approach has been extremely successful in reducing disease activity and joint damage in patients with RA. At the same time, however, overall patient perception of well-being appears to have decreased with respect to outcome measures considered important by patients themselves, such as pain, fatigue, physical function and quality of life...
March 21, 2018: Rheumatology International
Minchul Yoon, Mi Ra Jo, Poong Ho Kim, Woo Seok Choi, Sang In Kang, Seok Gwan Choi, Jong Hee Lee, Hee Chung Lee, Kwang Tae Son, Jong Soo Mok
The concentrations of total mercury (THg) in different organs of the Antarctic toothfish (Dissostichus mawsoni) collected from CCAMLR research blocks in Subarea 88.3 and Division 58.4.1 off the coast of Antarctica were determined. The results revealed THg concentrations of 0.165 ± 0.095 mg/kg (0.023-0.454 mg/kg, wet weight) in the Antarctic toothfish. In muscle, methyl mercury (MeHg) accounted for approximately 40% of the THg. In a comparison analysis, muscle and liver tended to bioaccumulate the highest levels of THg, and both THg and MeHg contents showed correlations with fish length and weight...
March 21, 2018: Bulletin of Environmental Contamination and Toxicology
Liane E Tellier, Elda A Treviño, Alexandra L Brimeyer, David S Reece, Nick J Willett, Robert E Guldberg, Johnna S Temenoff
As a potential treatment for osteoarthritis (OA), we have developed injectable and hydrolytically degradable heparin-based biomaterials with tunable sulfation for the intra-articular delivery of tumor necrosis factor-alpha stimulated gene-6 (TSG-6), a protein known to inhibit plasmin which may degrade extracellular matrix within OA joints. We first assessed the effect of heparin sulfation on TSG-6 anti-plasmin activity and found that while fully sulfated (Hep) and heparin desulfated at only the N position (Hep-N) significantly enhanced TSG-6 bioactivity in vitro, fully desulfated heparin (Hep-) had no effect, indicating that heparin sulfation plays a significant role in modulating TSG-6 bioactivity...
March 22, 2018: Biomaterials Science
Michael S Reich, Kace A Ezzet
Persistent wound drainage after total joint arthroplasty can potentiate periprosthetic joint infection. Although current recommendations are to treat persistent wound drainage with surgical debridement, we believe nonoperative treatment may be successful in selected patients. We performed a retrospective analysis of 25 persistently draining hip and knee arthroplasty wounds treated with a protocol consisting of a combination of surgical site aspiration, closure of open wound edges, cessation of anticoagulants, activity modification, and antibiotics (in select patients)...
March 2018: Arthroplasty Today
Jae Hoon Jang, Nam Hoon Moon, Ki Young Park
Although surgical techniques for treating acetabular fracture are evolving, the use of periacetabular screws is common, and their placement in acetabular surgery is still technically demanding. For instance, intraarticular screw perforation is a serious complication that may occur during surgical treatment of an acetabular fracture. Here, we describe the case of a 50-year-old female who experienced an intraarticular screw perforation after surgical treatment of a posterior acetabular wall fracture. Removal of the perforated screw was performed arthroscopically based on its ability to offer minimally invasive access to the hip joint...
March 2018: Hip & Pelvis
Brian L Dial, Alexander J Lampley, Cynthia L Green, Rhett Hallows
Purpose: Total hip arthroplasty (THA) is a successful surgery for the treatment of hip osteoarthritis; however, the risk of a post-operative prosthetic joint infection (PJI) remains at 1% to 2%. The purpose of this study was to investigate the safety profile of using vancomycin powder (VP) to reduce infection rates by reviewing acute postoperative complications. Materials and Methods: A retrospective review of 265 consecutive patients undergoing THA was performed...
March 2018: Hip & Pelvis
Min Wook Kim, Sang Min Kim, Young Yool Chung
Purpose: This study was performed to characterize the natural history of squeaking sounds that occur following total hip arthroplasty (THA) using ceramic-on-ceramic bearing surfaces and its potential correlation with clinical and/or radiological results. Materials and Methods: This study included 47 patients who underwent THA between April 1999 and April 2005, and had at least 10 years of follow up from the time of the operation. Squeaking sounds were detected in 10 out of the 47 cases (21...
March 2018: Hip & Pelvis
Jun Han, Seok-Hyung Won, Jung-Taek Kim, Myung-Hoon Hahn, Ye-Yeon Won
Purpose: Femoroacetabular impingement (FAI) is considered an important cause of early degenerative arthritis development. Although three-dimensional (3D) imaging such as computed tomography (CT) and magnetic resonance imaging are considered precise imaging modalities for 3D morphology of FAI, they are associated with several limitations when used in out-patient clinics. The paucity of FAI morphologic data in Koreans makes it difficult to select the most effective radiographical method when screening for general orthopedic problems...
March 2018: Hip & Pelvis
Miti Aatish Shah, Ira Shah
The hand and wrist are rare sites for tuberculosis (TB) and account for < 1% of all skeletal TB. Though rare, TB of the wrist is a cause of major morbidity. A common feature in the available reports on wrist TB is a delay in diagnosis causing residual stiffness and pain after treatment. Although TB of the wrist has a varied presentation, the majority of lesions respond to conservative treatment. We report a 12-year-old girl who presented with wrist swelling, having intercarpal, carpometacarpal, and radiocarpal joint involvement which turned out to be tuberculous and it healed with residual deformity...
October 2017: Journal of Family Medicine and Primary Care
Man Hung, Jerry Bounsanga, Maren W Voss, Charles L Saltzman
AIM: To establish minimum clinically important difference (MCID) for measurements in an orthopaedic patient population with joint disorders. METHODS: Adult patients aged 18 years and older seeking care for joint conditions at an orthopaedic clinic took the Patient-Reported Outcomes Measurement Information System Physical Function (PROMIS® PF) computerized adaptive test (CAT), hip disability and osteoarthritis outcome score for joint reconstruction (HOOS JR), and the knee injury and osteoarthritis outcome score for joint reconstruction (KOOS JR) from February 2014 to April 2017...
March 18, 2018: World Journal of Orthopedics
Derek P Lindsey, Ali Kiapour, Scott A Yerby, Vijay K Goel
AIM: To analyze how various implants placement variables affect sacroiliac (SI) joint range of motion. METHODS: An experimentally validated finite element model of the lumbar spine and pelvis was used to simulate a fusion of the SI joint using various placement configurations of triangular implants (iFuse Implant System® ). Placement configurations were varied by changing implant orientation, superior implant length, and number of implants. The range of motion of the SI joint was calculated using a constant moment of 10 N-m with a follower load of 400 N...
March 18, 2018: World Journal of Orthopedics
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