keyword
MENU ▼
Read by QxMD icon Read
search

Artificial limbs

keyword
https://www.readbyqxmd.com/read/29315551/the-impact-of-artificial-selection-on-morphological-integration-in-the-appendicular-skeleton-of-domestic-horses
#1
Pauline Hanot, Anthony Herrel, Claude Guintard, Raphaël Cornette
The relationships between the different component parts of organisms, such as the sharing of common development or function, produce a coordinated variation between the different traits. This morphological integration contributes to drive or constrain morphological variation and thus impacts phenotypic diversification. Artificial selection is known to contribute significantly to phenotypic diversification of domestic species. However, little attention has been paid to its potential impact on integration patterns...
January 8, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29280609/new-perspectives-in-biofilm-eradication
#2
Heidi Wolfmeier, Daniel Pletzer, Sarah C Mansour, Robert E W Hancock
Microbial biofilms, which are elaborate and highly resistant microbial aggregates formed on surfaces or medical devices, cause two-thirds of infections and constitute a serious threat to public health. Immunocompromised patients, individuals who require implanted devices, artificial limbs, organ transplants, or external life support and those with major injuries or burns, are particularly prone to become infected. Antibiotics, the mainstay treatments of bacterial infections, have often proven ineffective in the fight against microbes when growing as biofilms, and to date, no antibiotic has been developed for use against biofilm infections...
December 27, 2017: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29242993/promotion-of-neuronal-regeneration-by-using-self-polymerized-dendritic-polypeptide-scaffold-for-spinal-cord-tissue-engineering
#3
Jun Ming Wan, Liang le Liu, Jian Fang Zhang, Jian Wei Lu, Qi Li
Tissue engineering technology is applicable for study of nerve regeneration after spinal cord injury. Many natural and artificial scaffold are not applicable because of poor mechanical properties and cell compatibility. Polypeptides with fine three-dimensional structure and cell compatibility and are widely used in tissue engineering research. The purpose of this study was to verify the neuronal differentiation of neural stem cells by using self-polymerize dendritic polypeptide for spinal cord tissue engineering...
December 14, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29232751/-prosthetics-and-orthotics-prosthetic-fitting-in-lower-extremity-in-transfemoral-amputation
#4
Bernhard Greitemann
Modern prosthetic equipment often enables reintegration of patients with the amputation of a lower limb into their private life, their professional and social environment to a large extent. Provisioning of the lower extremity with artificial limbs aims at a life as normal as possible for the involved individual. The modules are selected in an interdisciplinary team. An optimal fitting of the socket, the correct static set-up, the appropriate fitting as well as cosmetic aspects are the essential basis for a sufficient provisioning...
December 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29215082/the-myokinetic-control-interface-tracking-implanted-magnets-as-a-means-for-prosthetic-control
#5
S Tarantino, F Clemente, D Barone, M Controzzi, C Cipriani
Upper limb amputation deprives individuals of their innate ability to manipulate objects. Such disability can be restored with a robotic prosthesis linked to the brain by a human-machine interface (HMI) capable of decoding voluntary intentions, and sending motor commands to the prosthesis. Clinical or research HMIs rely on the interpretation of electrophysiological signals recorded from the muscles. However, the quest for an HMI that allows for arbitrary and physiologically appropriate control of dexterous prostheses, is far from being completed...
December 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29205933/a-highly-selective-3d-spiked-ultraflexible-neural-sun-interface-for-decoding-peripheral-nerve-sensory-information
#6
Jiahui Wang, Xin Yuan Thow, Hao Wang, Sanghoon Lee, Kai Voges, Nitish V Thakor, Shih-Cheng Yen, Chengkuo Lee
Artificial sensors on the skin are proposed as a way to capture information that can be used in intracortical microstimulation or peripheral intraneural stimulation to restore sensory feedback to persons with tetraplegia. However, the ability of these artificial sensors to replicate the density and complexity of the natural mechanoreceptors is limited. One relatively unexplored approach is to make use of the signals from surviving tactile and proprioceptive receptors in existing limbs by recording from their transmitting axons within the primary sensory nerves...
December 4, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29193246/transcutaneous-carbon-dioxide-application-with-hydrogel-prevents-muscle-atrophy-in-a-rat-sciatic-nerve-crush-model
#7
Hanako Nishimoto, Atsuyuki Inui, Takeshi Ueha, Miho Inoue, Shiho Akahane, Risa Harada, Yutaka Mifune, Takeshi Kokubu, Kotaro Nishida, Ryosuke Kuroda, Yoshitada Sakai
The acceleration of nerve regeneration remains a clinical challenge. We previously demonstrated that transcutaneous CO2 application using a novel hydrogel increases the oxygen concentration in local tissue via an "artificial Bohr effect" with the potential to prevent muscle atrophy. In this study, we investigated the effect of transcutaneous CO2 administration on limb function after peripheral nerve injury in a rat sciatic nerve injury model. In total, 73 Sprague-Dawley rats were divided into a sham group, a control group (crush injury to sciatic nerve and no treatment) or a CO2 group (crush injury with transcutaneous CO2 application)...
November 28, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29182433/an-experimental-method-to-estimate-upper-limbs-inertia-parameters-during-handcycling
#8
Ghazaleh Azizpour, Matteo Lancini, Giovanni Incerti, Paolo Gaffurini, Giovanni Legnani
This study proposes an experimental method to estimate personalized inertia parameters of upper limbs during handcycling by using a planar dynamic model. The handle forces are expressed as a product of a matrix describing the kinematics terms and a vector of inertial parameters of arm and forearm. The parameters are estimated by measuring the handle forces during a suitable "passive test" and inverting the mentioned matrix. The data was acquired while an operator actuated the handle, and the subject's muscles were relaxed...
November 28, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29148138/artificial-walking-technologies-to-improve-gait-in-cerebral-palsy-multichannel-neuromuscular-stimulation
#9
Jessica Rose, Katelyn Cahill-Rowley, Erin E Butler
Cerebral palsy (CP) is the most common childhood motor disability and often results in debilitating walking abnormalities, such as flexed-knee and stiff-knee gait. Current medical and surgical treatments are only partially effective in improving gait abnormalities and may cause significant muscle weakness. However, emerging artificial walking technologies, such as step-initiated, multichannel neuromuscular electrical stimulation (NMES), can substantially improve gait patterns and promote muscle strength in children with spastic CP...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29134061/the-effect-of-leg-to-body-ratio-on-male-attractiveness-depends-on-the-ecological-validity-of-the-figures
#10
Thomas M M Versluys, William J Skylark
Leg-to-body ratio (LBR) predicts evolutionary fitness, and is therefore expected to influence bodily attractiveness. Previous investigations of LBR attractiveness have used a wide variety of stimuli, including line drawings, silhouettes, and computer-generated images based on anthropometric data. In two studies, community samples of heterosexual women from the USA rated the attractiveness of male figures presented as silhouettes and as detailed computer-generated images with three different skin tones (white, black, and an artificial grey)...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29131276/the-expression-of-mmp-7-in-serum-and-aneurysm-tissues-of-patients-with-abdominal-aortic-aneurysm-associated-with-hypertension-and-the-clinical-efficacy-of-endovascular-exclusion
#11
W-H Zhang, C-H Qiao, X Zhang, H Luo, X-K Sun
OBJECTIVE: To investigate the expression of matrix metalloproteinase-7 (MMP-7) in abdominal aortic aneurysm (AAA) with hypertension, and the clinical efficacy of endovascular exclusion. PATIENTS AND METHODS: Seventy-two cases of AAA with hypertension were retrospectively analyzed. Patients were divided into the observation group (34 cases) and control group (38 cases). The control group was treated by AAA incision with artificial vascular replacement, while the observation group was treated by endovascular graft exclusion...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29115820/continuously-producible-ultrasensitive-wearable-strain-sensor-assembled-with-three-dimensional-interpenetrating-agnw-poe-nanofibrous-composite-yarn
#12
Weibing Zhong, Cui Liu, Chenxue Xiang, Yuxia Jin, Mufang Li, Ke Liu, Qiongzhen Liu, Yuedan Wang, Gang Sun, Dong Wang
Fiber shaped strain sensors with great flexibility and knittability have been tremendously concerned due to the wide applications in health manager devices, especially in human motion detection and physicalogical signal monitoring. Herein, a novel fiber shaped strain sensor has been designed and prepared by interpenetrating AgNWs into POE nanofibrous yarn. The easy-to-obtain structure and simple roll-to-roll process make the continuous large-scale production of nanofibrous composite yarn possible. The continuous and alternating stretching and releasing reversibly change the contact probability between AgNWs in this interpenetrating networks, leading to the variations of electrical resistance of the sensor...
November 8, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29103810/subjective-behavioral-and-physiological-responses-to-the-rubber-hand-illusion-do-not-vary-with-age-in-the-adult-phase
#13
Priscila Palomo, Adrián Borrego, Ausiàs Cebolla, Roberto Llorens, Marcelo Demarzo, Rosa M Baños
The Rubber Hand Illusion (RHI) is a perceptual illusion that enables integration of artificial limbs into the body representation through combined multisensory integration. Most previous studies investigating the RHI have involved young healthy adults within a very narrow age range (typically 20-30 years old). The purpose of this paper was to determine the influence of age on the RHI. The RHI was performed on 93 healthy adults classified into three groups of age (20-35 years old, N = 41; 36-60 years old, N = 28; and 61-80 years old, N = 24), and its effects were measured with subjective (Embodiment of Rubber Hand Questionnaire), behavioral (proprioceptive drift), and physiological (changes in skin temperature and conductance) measures...
November 3, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/29068628/upper-limb-rehabilitation-robot-powered-by-pams-cooperates-with-fes-arrays-to-realize-reach-to-grasp-trainings
#14
Xikai Tu, Hualin Han, Jian Huang, Jian Li, Chen Su, Xiaobo Jiang, Jiping He
The reach-to-grasp activities play an important role in our daily lives. The developed RUPERT for stroke patients with high stiffness in arm flexor muscles is a low-cost lightweight portable exoskeleton rehabilitation robot whose joints are unidirectionally actuated by pneumatic artificial muscles (PAMs). In order to expand the useful range of RUPERT especially for patients with flaccid paralysis, functional electrical stimulation (FES) is taken to activate paralyzed arm muscles. As both the exoskeleton robot driven by PAMs and the neuromuscular skeletal system under FES possess the highly nonlinear and time-varying characteristics, iterative learning control (ILC) is studied and is taken to control this newly designed hybrid rehabilitation system for reaching trainings...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29065566/upper-limb-rehabilitation-robot-powered-by-pams-cooperates-with-fes-arrays-to-realize-reach-to-grasp-trainings
#15
Xikai Tu, Hualin Han, Jian Huang, Jian Li, Chen Su, Xiaobo Jiang, Jiping He
The reach-to-grasp activities play an important role in our daily lives. The developed RUPERT for stroke patients with high stiffness in arm flexor muscles is a low-cost lightweight portable exoskeleton rehabilitation robot whose joints are unidirectionally actuated by pneumatic artificial muscles (PAMs). In order to expand the useful range of RUPERT especially for patients with flaccid paralysis, functional electrical stimulation (FES) is taken to activate paralyzed arm muscles. As both the exoskeleton robot driven by PAMs and the neuromuscular skeletal system under FES possess the highly nonlinear and time-varying characteristics, iterative learning control (ILC) is studied and is taken to control this newly designed hybrid rehabilitation system for reaching trainings...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29062251/a-congenital-cranial-dysinnervation-disorder-m%C3%A3-bius-syndrome
#16
Hatice Mutlu Albayrak, Nuriye Tarakçı, Hüseyin Altunhan, Rahmi Örs, Hüseyin Çaksen
Möbius' syndrome, also known as Möbius' sequence, is a nonprogressive cranial dysinnervation disorder characterized by congenital facial and abducens nerve paralysis. Here, we report a 5-day-old girl who was conceived after in vitro fertilization with poor suck and facial paralysis. She had bilaterally ptosis and lateral gaze limitation, left-sided deviation of the tongue, dysmorphic face, hypoplastic fingers and finger nails on the left hand, and was diagnosed as having Möbius' syndrome. Involvement of other cranial nerves such as three, four, five, nine, 9 and 12, and limb malformations may accompany this syndrome...
September 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/29028131/a-motion-analysis-protocol-for-kinematic-assessment-of-poly-articulated-prosthetic-hands-with-cosmetic-gloves
#17
Andrea Giovanni Cutti, Francesca Cordella, Giulia D'Amico, Rinaldo Sacchetti, Angelo Davalli, Eugenio Guglielmelli, Loredana Zollo
To provide upper-limb amputees with devices that best fit their needs and to test innovative solutions, it is necessary to quantitatively appraise a device performance with rigorous measurement methods. The aim of this work was to define an optimal motion analysis protocol, suitable for optoelectronic systems, to measure the kinematics of poly-articulated hands even when covered by a cosmetic glove. This is a fundamental aspect, because gloves can decrease device speed and range of motion and, ultimately, patients' acceptance of the artificial limb...
October 13, 2017: Artificial Organs
https://www.readbyqxmd.com/read/29025427/adaptive-hybrid-robotic-system-for-rehabilitation-of-reaching-movement-after-a-brain-injury-a-usability-study
#18
F Resquín, J Gonzalez-Vargas, J Ibáñez, F Brunetti, I Dimbwadyo, L Carrasco, S Alves, C Gonzalez-Alted, A Gomez-Blanco, J L Pons
BACKGROUND: Brain injury survivors often present upper-limb motor impairment affecting the execution of functional activities such as reaching. A currently active research line seeking to maximize upper-limb motor recovery after a brain injury, deals with the combined use of functional electrical stimulation (FES) and mechanical supporting devices, in what has been previously termed hybrid robotic systems. This study evaluates from the technical and clinical perspectives the usability of an integrated hybrid robotic system for the rehabilitation of upper-limb reaching movements after a brain lesion affecting the motor function...
October 12, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29017490/germline-mutation-within-col2a1-associated-with-lethal-chondrodysplasia-in-a-polled-holstein-family
#19
Sina Reinartz, Hartmut Mohwinkel, Christian Sürie, Maren Hellige, Karsten Feige, Deborah Eikelberg, Andreas Beineke, Julia Metzger, Ottmar Distl
BACKGROUND: The bulldog calf syndrome is a lethal form of the inherited congenital chondrodysplasias. Among the progeny of the polled Holstein bull Energy P cases of lethal chondrodysplasia were observed. Pedigrees of the cases and the frequency of 3/8 cases among the offspring of Energy P at our teaching and experimental farm Ruthe (LuFG Ruthe) supported the assumption of a germline mutation with a mosaic of normal and defective sperm. RESULTS: All three malformed calves were examined using necropsy, histopathology and computed tomography scanning...
October 10, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28993523/giuliano-vanghetti-and-the-innovation-of-cineplastic-operations
#20
REVIEW
Peppino Tropea, Alberto Mazzoni, Silvestro Micera, Massimo Corbo
OBJECTIVE: Developing functional artificial limbs for amputees has been a centuries-old challenge in medicine. We review the mechanical and neurologic principles of "cineplastic operations" and "plastic motors" used to restore movements in prostheses, with special attention to the work of Giuliano Vanghetti. METHODS: We evaluated original publications describing cineplastic operations, biographic information, writings, drawings, and unpublished letters from the Vanghetti library, preserved in Empoli, Italy, and performed a bibliographic search and comparison for similar procedures in the literature...
October 10, 2017: Neurology
keyword
keyword
10869
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"