keyword
MENU ▼
Read by QxMD icon Read
search

fused joint

keyword
https://www.readbyqxmd.com/read/28493649/temperature-driven-planar-chirality-switching-of-a-pillar-5-arene-based-molecular-universal-joint
#1
Jiabin Yao, Wanhua Wu, Wenting Liang, Yujun Feng, Dayang Zhou, Jason J Chruma, Gaku Fukuhara, Tadashi Mori, Yoshihisa Inoue, Cheng Yang
The study of an enantiopure bicyclic pillar[5]arene-based molecular universal joint (MUJ) by single-crystal X-ray diffraction allowed for the first time the unequivocal assignment of the absolute configuration of a planar chiral pillar[5]arene by circular dichroism spectroscopy. Crucially, the absolute configuration of the MUJ was switched reversibly by temperature, with an accompanying sign inversion of the anisotropy factor that varied by as much as 0.03, which is the largest value ever reported. Mechanistically, the reversible chirality switching of the MUJ is driven by the threading/dethreading motion of the fused ring and hence is dependent on both the size and nature of the ring and the solvent employed, reflecting the critical balance between the self-complexation of the ring by pillar[5]arene, the solvation to the excluded ring, and the inclusion of solvent molecules in the cavity...
May 11, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28480581/automatic-quantification-of-bone-marrow-edema-on-mri-of-the-wrist-in-patients-with-early-arthritis-a-feasibility-study
#2
Evgeni Aizenberg, Edgar A H Roex, Wouter P Nieuwenhuis, Lukas Mangnus, Annette H M van der Helm-van Mil, Monique Reijnierse, Johan L Bloem, Boudewijn P F Lelieveldt, Berend C Stoel
PURPOSE: To investigate the feasibility of automatic quantification of bone marrow edema (BME) on MRI of the wrist in patients with early arthritis. METHODS: For 485 early arthritis patients (clinically confirmed arthritis of one or more joints, symptoms for less than 2 years), MR scans of the wrist were processed in three automatic stages. First, super-resolution reconstruction was applied to fuse coronal and axial scans into a single high-resolution 3D image. Next, the carpal bones were located and delineated using atlas-based segmentation...
May 7, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28463696/spinal-fusion-without-instrumentation-experimental-animal-study
#3
Sandra Reitmaier, Julian Schuelke, Hendrik Schmidt, David Volkheimer, Anita Ignatius, Hans-Joachim Wilke
BACKGROUND: The number and cost of instrumented spinal fusion surgeries have increased rapidly, primarily for the treatment of lumbar segmental instabilities. However, what if the organism itself is able to restore segmental stability over time? This large-animal study using sheep aimed to investigate whether the reparative response after destabilization via facetectomy and nucleotomy without instrumentation can effectively fuse the spinal segment comparable to instrumented standard fusion surgery...
April 25, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28427313/sensitivity-of-a-juvenile-subject-specific-musculoskeletal-model-of-the-ankle-joint-to-the-variability-of-operator-dependent-input
#4
Iain Hannah, Erica Montefiori, Luca Modenese, Joe Prinold, Marco Viceconti, Claudia Mazzà
Subject-specific musculoskeletal modelling is especially useful in the study of juvenile and pathological subjects. However, such methodologies typically require a human operator to identify key landmarks from medical imaging data and are thus affected by unavoidable variability in the parameters defined and subsequent model predictions. The aim of this study was to thus quantify the inter- and intra-operator repeatability of a subject-specific modelling methodology developed for the analysis of subjects with juvenile idiopathic arthritis...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28425949/an-efficient-distributed-compressed-sensing-algorithm-for-decentralized-sensor-network
#5
Jing Liu, Kaiyu Huang, Guoxian Zhang
We consider the joint sparsity Model 1 (JSM-1) in a decentralized scenario, where a number of sensors are connected through a network and there is no fusion center. A novel algorithm, named distributed compact sensing matrix pursuit (DCSMP), is proposed to exploit the computational and communication capabilities of the sensor nodes. In contrast to the conventional distributed compressed sensing algorithms adopting a random sensing matrix, the proposed algorithm focuses on the deterministic sensing matrices built directly on the real acquisition systems...
April 20, 2017: Sensors
https://www.readbyqxmd.com/read/28379170/a-two-axis-goniometric-sensor-for-tracking-finger-motion
#6
Lefan Wang, Turgut Meydan, Paul Ieuan Williams
The study of finger kinematics has developed into an important research area. Various hand tracking systems are currently available; however, they all have limited functionality. Generally, the most commonly adopted sensors are limited to measurements with one degree of freedom, i.e., flexion/extension of fingers. More advanced measurements including finger abduction, adduction, and circumduction are much more difficult to achieve. To overcome these limitations, we propose a two-axis 3D printed optical sensor with a compact configuration for tracking finger motion...
April 5, 2017: Sensors
https://www.readbyqxmd.com/read/28371783/monocular-vision-and-imu-based-system-for-prosthesis-pose-estimation-during-total-hip-replacement-surgery
#7
Shaojie Su, Yixin Zhou, Zhihua Wang, Hong Chen
The average age of population increases worldwide, so does the number of total hip replacement surgeries. Total hip replacement, however, often involves a risk of dislocation and prosthetic impingement. To minimize the risk after surgery, we propose an instrumented hip prosthesis that estimates the relative pose between prostheses intraoperatively and ensures the placement of prostheses within a safe zone. We create a model of the hip prosthesis as a ball and socket joint, which has four degrees of freedom (DOFs), including 3-DOF rotation and 1-DOF translation...
June 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28349181/hip-fusion-takedown-to-a-total-hip-arthroplasty-is-it-worth-it-a-systematic-review
#8
Julio J Jauregui, Joseph K Kim, William P Shield, Matthew Harb, Emmanuel M Illical, Farshad Adib, Aditya V Maheshwari
INTRODUCTION: Patients with surgically or spontaneously fused hips are often dissatisfied with their overall function and the debilitating effect on adjacent joints. Therefore, in properly selected patients, hip fusion-takedown and conversion to total hip arthroplasty (THA) can result in improved function and decreased pain. We aimed to (1) evaluate the indications for conversion, (2) evaluate the clinical outcomes, (3) analyze the overall complications, and (4) identify the overall satisfaction following the procedure...
March 27, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28328603/simultaneous-autologus-mandible-and-temporomandibular-joint-reconstruction
#9
Yigit Ozer Tiftikcioglu, Ersin Gur, Ufuk Bilkay
Ablative surgery of mandible often necessitates combined reconstruction of the mandible and the temporomandibular joint. Fibula-free flaps with gap arthroplasty or osseochondral grafts are common procedures in the authors' practice. In search for a better reconstructive option free fibula flap is used together with a metatarsal bone flap for the vascular reconstruction of the mandibular body and the condyle at the same time. The 2 osseous-free flaps have been fused and used as a combined flow through double-free flap...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28316569/longitudinal-analysis-for-disease-progression-via-simultaneous-multi-relational-temporal-fused-learning
#10
Baiying Lei, Feng Jiang, Siping Chen, Dong Ni, Tianfu Wang
It is highly desirable to predict the progression of Alzheimer's disease (AD) of patients [e.g., to predict conversion of mild cognitive impairment (MCI) to AD], especially longitudinal prediction of AD is important for its early diagnosis. Currently, most existing methods predict different clinical scores using different models, or separately predict multiple scores at different future time points. Such approaches prevent coordinated learning of multiple predictions that can be used to jointly predict clinical scores at multiple future time points...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28300359/influence-of-different-boundary-conditions-in-finite-element-analysis-on-pelvic-biomechanical-load-transmission
#11
Pan Hu, Tao Wu, Hui-Zhi Wang, Xin-Zheng Qi, Jie Yao, Xiao-Dong Cheng, Wei Chen, Ying-Ze Zhang
OBJECTIVE: To observe the effects of boundary conditions and connect conditions on biomechanics predictions in finite element (FE) pelvic models. METHODS: Three FE pelvic models were constructed to analyze the effect of boundary conditions and connect conditions in the hip joint: an intact pelvic model assumed contact of the hip joint on both sides (Model I); and a pelvic model assumed the hip joint connecting surfaces fused together with (Model II) or without proximal femurs (Model III)...
February 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28268891/hybrid-bci-approach-to-control-an-artificial-tibio-femoral-joint
#12
Luis Mercado, Angel Rodriguez-Linan, Luis M Torres-Trevino, G Quiroz
Brain-Computer Interfaces (BCIs) for disabled people should allow them to use their remaining functionalities as control possibilities. BCIs connect the brain with external devices to perform the volition or intent of movement, regardless if that individual is unable to perform the task due to body impairments. In this work we fuse electromyographic (EMG) with electroencephalographic (EEG) activity in a framework called "Hybrid-BCI" (hBCI) approach to control the movement of a simulated tibio-femoral joint...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28241536/determination-of-the-refractive-index-and-thickness-of-a-hydroxide-catalysis-bond-between-fused-silica-from-reflectivity-measurements
#13
V Mangano, A A van Veggel, R Douglas, J Faller, A Grant, J Hough, S Rowan
Hydroxide-catalysis bonding is a high precision jointing technique producing strong, transparent and thin bonds, the use of which in the delicate fused silica mirror suspensions of aLIGO have been instrumental in the first detections of gravitational radiation. More sensitive future gravitational wave detectors will require more accurate (ideally in situ) measurements of properties such as bond thickness. Here a non-destructive technique is presented in which the thickness and refractive index of a bond are determined from measurements of optical reflectivity...
February 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28237928/robust-multi-exposure-image-fusion-a-structural-patch-decomposition-approach
#14
Kede Ma, Hui Li, Hongwei Yong, Zhou Wang, Deyu Meng, Lei Zhang
We propose a simple yet effective structural patch decomposition (SPD) approach for multi-exposure image fusion (MEF) that is robust to ghosting effect. We decompose an image patch into three conceptually independent components: signal strength, signal structure, and mean intensity. Upon fusing these three components separately, we reconstruct a desired patch and place it back into the fused image. This novel patch decomposition approach benefits MEF in many aspects. First, as opposed to most pixel-wise MEF methods, the proposed algorithm does not require post-processing steps to improve visual quality or to reduce spatial artifacts...
February 20, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28227091/hybrid-bci-approach-to-control-an-artificial-tibio-femoral-joint
#15
Luis Mercado, Angel Rodriguez-Linan, Luis M Torres-Trevino, G Quiroz, Luis Mercado, Angel Rodriguez-Linan, Luis M Torres-Trevino, G Quiroz, Luis Mercado, Angel Rodriguez-Linan, Luis M Torres-Trevino, G Quiroz
Brain-Computer Interfaces (BCIs) for disabled people should allow them to use their remaining functionalities as control possibilities. BCIs connect the brain with external devices to perform the volition or intent of movement, regardless if that individual is unable to perform the task due to body impairments. In this work we fuse electromyographic (EMG) with electroencephalographic (EEG) activity in a framework called "Hybrid-BCI" (hBCI) approach to control the movement of a simulated tibio-femoral joint...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28211998/nanojoint-formation-between-ceramic-titanate-nanowires-and-spot-melting-of-metal-nanowires-with-electron-beam
#16
Arixin Bo, Jose Alarco, Huaiyong Zhu, Eric R Waclawik, Haifei Zhan, YuanTong Gu
Construction of nanoarchitectures requires techniques like joint formation and trimming. For ceramic materials, however, it is extremely difficult to form nanojoints by conventional methods like merging. In this work, we demonstrate that ceramic titanate nanowires (NWs) can be joined by spot melting under electron beam (e-beam) irradiation (EBI). The irradiation fuses the contacted spot of titanate NWs yielding an intact nanojoint. Nanojoints with different morphologies can be produced. The joint structures consist of titanium dioxide (TiO2) rutile, anatase, and titanate phases in the direction away from the e-beam melting spot...
March 2, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28167061/chopart-injuries-when-to-fix-and-when-to-fuse
#17
REVIEW
Stefan Rammelt, Tim Schepers
Chopart joint injuries have a profound effect on global foot function. Surgical treatment aims at joint reconstruction and axial alignment with restoration of the normal relationship of the lateral and medial foot columns. Internal fixation is tailored to the individual fracture pattern and achieved with resorbable pins, Kirschner wires, screws, and/or anatomically shaped minifragment plates. If instability persists, temporary joint transfixation may be achieved with Kirschner wires or bridge plating. Primary fusion sacrifices essential joints and should be reserved for severe initial cartilage damage...
March 2017: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/28148666/custom-made-total-ankle-arthroplasty-for-the-salvage-of-major-talar-bone-loss
#18
J Wagener, C E Gross, C Schweizer, T Horn Lang, B Hintermann
AIMS: A failed total ankle arthroplasty (TAA) is often associated with much bone loss. As an alternative to arthrodesis, the surgeon may consider a custom-made talar component to compensate for the bone loss. Our aim in this study was to assess the functional and radiological outcome after the use of such a component at mid- to long-term follow-up. PATIENTS AND METHODS: A total of 12 patients (five women and seven men, mean age 53 years; 36 to77) with a failed TAA and a large talar defect underwent a revision procedure using a custom-made talar component...
February 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28126356/efficacy-comparison-of-accell-evo3%C3%A2-and-grafton%C3%A2-demineralized-bone-matrix-putties-against-autologous-bone-in-a-rat-posterolateral-spine-fusion-model
#19
Antonio T Brecevich, Paul D Kiely, B Victor Yoon, Joseph T Nguyen, Frank P Cammisa, Celeste Abjornson
BACKGROUND CONTEXT: Spinal fusion procedures are intended to stabilize the spinal column for a multitude of disorders including abnormal curvature, traumatic instability, degenerative instability, and damage from infections or tumors. As an aid in the bone healing response, bone graft materials are utilized to bridge joints for arthrodesis and promote unions in pseudoarthrosis. Currently, the gold standard for stabilizing fusion masses in spinal procedures involves utilizing the osteogenic, osteoinductive, and osteoconductive properties of autologous iliac crest cortico-cancellous bone...
January 23, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28124107/the-interaction-between-the-vastus-medialis-and-vastus-intermedius-and-its-influence-on-the-extensor-apparatus-of-the-knee-joint
#20
Karl Grob, Mirjana Manestar, Luis Filgueira, Markus S Kuster, Helen Gilbey, Timothy Ackland
PURPOSE: Although the vastus medialis (VM) is closely associated with the vastus intermedius (VI), there is a lack of data regarding their functional relationship. The purpose of this study was to investigate the anatomical interaction between the VM and VI with regard to their origins, insertions, innervation and function within the extensor apparatus of the knee joint. METHODS: Eighteen human cadaveric lower limbs were investigated using macro-dissection techniques...
January 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
keyword
keyword
50428
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"