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Limb development

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https://www.readbyqxmd.com/read/28092566/wake-up-exoskeleton-to-assist-children-with-cerebral-palsy-design-and-preliminary-evaluation-in-level-walking
#1
Fabrizio Patane, Stefano Rossi, Fausto Del Sette, Juri Taborri, Paolo Cappa
This paper presents the modular design and control of a novel compliant lower limb multi-joint exoskeleton for the rehabilitation of ankle knee mobility and locomotion of pediatric patients with neurological diseases, such as Cerebral Palsy (CP). The device consists of an untethered powered knee-ankle-foot orthosis (KAFO), addressed as WAKE-up (Wearable Ankle Knee Exoskeleton), characterized by a position control and capable of operating synchronously and synergistically with the human musculoskeletal system...
January 11, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28092183/therapeutic-effects-of-hyaluronidase-on-acquired-lymphedema-using-a-newly-developed-mouse-limb-model
#2
Kangsan Roh, Sungrae Cho, Jae-Hyun Park, Byong Chul Yoo, Won-Ki Kim, Seok-Ki Kim, Kyewon Park, Hee Kang, Jin-Mo Ku, Chang-Hwan Yeom, Kyunghoon Lee, Sukchan Lee
Acquired lymphedema is one of the most dreaded side effects of cancer treatment, such as surgical treatment or irradiation. However, due to the lack of appropriate animal models, there is no effective therapeutic method to cure acquired lymphedema. To develop a reproducible acquired lymphedema animal model, we devised a mouse hind limb model by removing a superficial inguinal lymph node, a popliteal lymph node, a deep inguinal lymph node, and the femoral lymphatic vessel. We measured the volume of lymphedematous leg and observed the change in level of hyaluronic acid (HA) and lymphangiogenic factors after injecting hyaluronidase...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28091278/brief-activity-performance-measure-for-upper-limb-amputees-bam-ula
#3
Linda Resnik, Matthew Borgia, Frantzy Acluche
BACKGROUND: Measures of activity performance for adults with upper limb amputation are needed. The purposes of this study were to evaluate the measurement properties of a new measure of activity performance for adults with upper limb amputation, which we call the Brief Activity Measure for Upper Limb Amputees (BAM-ULA) and to compare BAM-ULA scores for users of different types of prostheses. METHODS: In all, 35 persons with upper limb amputation were administered the BAM-ULA, twice within 1 week...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28088500/voice-emotion-perception-and-production-in-cochlear-implant-users
#4
REVIEW
N T Jiam, M Caldwell, M L Deroche, M Chatterjee, C J Limb
Voice emotion is a fundamental component of human social interaction and social development. Unfortunately, cochlear implant users are often forced to interface with highly degraded prosodic cues as a result of device constraints in extraction, processing, and transmission. As such, individuals with cochlear implants frequently demonstrate significant difficulty in recognizing voice emotions in comparison to their normal hearing counterparts. Cochlear implant-mediated perception and production of voice emotion is an important but relatively understudied area of research...
January 11, 2017: Hearing Research
https://www.readbyqxmd.com/read/28087638/intrinsic-properties-of-limb-bud-cells-can-be-differentially-reset
#5
Patricia Saiz-Lopez, Kavitha Chinnaiya, Matthew Towers, Maria A Ros
An intrinsic timing mechanism specifies the positional values of the zeugopod (i.e. radius/ulna) and then autopod (i.e. wrist/digits) segments during limb development. Here we have addressed if this timing mechanism ensures that patterning events occur only once by grafting GFP-expressing autopod progenitor cells to the earlier host signaling environment of zeugopod progenitor cells. We show that early and late autopod progenitors fated for the wrist and phalanges, respectively, both contribute to the entire host autopod indicating that the autopod positional value is irreversibly determined as revealed by Hoxa13 expression...
January 13, 2017: Development
https://www.readbyqxmd.com/read/28087285/apert-syndrome-a-consensus-on-the-management-of-apert-hands
#6
David A Pettitt, Zeeshaan Arshad, Anuj Mishra, Paul McArthur
INTRODUCTION: Apert Syndrome is a congenital condition characterised by primary craniosynostosis, midfacial malformations and complex symmetrical malformations of the hands and feet. The hands demonstrate one of the most complex collections of congenital upper limb deformities, posing a significant challenge for the paediatric hand surgeon. This study examines the extant literature and current practice of the four UK specialist craniofacial units regarding the management of Apert hands in order to provide a basis for guideline development...
December 10, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28079273/abnormal-fetal-muscle-forces-result-in-defects-in-spinal-curvature-and-alterations-in-vertebral-segmentation-and-shape
#7
Rebecca A Rolfe, James H Bezer, Tyler Kim, Ahmed Z Zaidon, Michelle L Oyen, James C Iatridis, Niamh C Nowlan
The incidence of congenital spine deformities, including congenital scoliosis, kyphosis and lordosis, may be influenced by the in utero mechanical environment, and particularly by fetal movements at critical time-points. There is a limited understanding of the influence of fetal movements on spinal development, despite the fact that mechanical forces have been shown to play an essential role in skeletal development of the limb. This study investigates the effects of muscle forces on spinal curvature, vertebral segmentation and vertebral shape by inducing rigid or flaccid paralysis in the embryonic chick...
January 12, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28072475/safety-of-sulfur-hexafluoride-microbubbles-in-sonography-of-abdominal-and-superficial-organs-retrospective-analysis-of-30-222-cases
#8
Chunlin Tang, Kejing Fang, Yanli Guo, Rui Li, Xiaozhou Fan, Ping Chen, Zhaohui Chen, Qiangwei Liu, Ye Zou
OBJECTIVES: The purpose of this study was to investigate the safety of the sulfur hexafluoride microbubble contrast agent SonoVue (Bracco SpA, Milan, Italy) and to implement precautions with the intent of further improving the safety of this contrast agent. METHODS: A total of 30,222 patients undergoing contrast-enhanced sonography of abdominal and superficial organs in our hospital from January 2005 to December 2014 were retrospectively investigated. SonoVue was used as the ultrasound contrast agent...
January 10, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28070593/-morphological-investigations-of-deep-sole-ulcers-in-cattle-part-1-the-complicated-rusterholz-ulcer
#9
Susanne Gehringer, Matthias Müller, Johann Maierl
OBJECTIVE: In the context of a larger study on morphological changes of deep sole ulcers, claws with Rusterholz ulcer (RU) were investigated to describe the varied pathological changes of the RU. MATERIAL AND METHODS: Hind limbs of 55 cows displaying external signs of complicated sole ulcers were examined externally and internally. To examine the samples internally, a sagittal section was performed. Furthermore, the material was examined histologically and after bone maceration...
January 10, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28070473/renal-infiltration-by-diffuse-large-b-cell-lymphoma-as-a-rare-cause-of-fanconi-s-syndrome-a-case-report
#10
Shoab Saadat, Syed Nayer Mahmud, Asim Qureshi
We report the case of a 16-year-old female patient with a known history of coeliac disease, who presented with the complaints of diarrhea, vomiting and generalized body weakness. On examination, she was found to have dehydration, decreased power in all her limbs, cervical lymphadenopathy and hepatosplenomegaly. Investigations showed severe hypokalemia, hyponatremia, hypomagnesemia, hypoglycemia and mildly enlarged kidneys on ultrasonography. Biopsy of the duodenum confirmed the flare up of coeliac disease, while cervical lymph node biopsy was positive for atypical lymphoid infiltrate and a morphology suggestive of non-Hodgkin's lymphoma...
November 30, 2016: Curēus
https://www.readbyqxmd.com/read/28069737/mtorc1-plays-an-important-role-in-skeletal-development-by-controlling-pre-osteoblast-differentiation
#11
Stephen Fitter, Mary P Matthews, Sally K Martin, Jianling Xie, Soo Siang Ooi, Carl R Walkley, John D Codrington, Markus A Ruegg, Michael N Hall, Christopher G Proud, Stan Gronthos, Andrew C W Zannettino
The mammalian target of rapamycin complex 1 (mTORC1) is activated by extracellular factors that control bone accrual. However, the direct role of this complex in osteoblast biology remains to be determined. To investigate this question, we disrupted mTORC1 function in pre-osteoblasts by targeted deletion of Raptor (Rptor) in Osterix-expressing cells. Deletion of Rptor resulted in reduced limb length that was associated with smaller epiphyseal growth plates in the postnatal skeleton. Rptor deletion caused a marked reduction in pre- and post-natal bone accrual, which was evident in skeletal elements derived from both intramembranous and endochondrial ossification...
January 9, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28069364/compact-mri-for-the-detection-of-teratoma-development-following-intrathecal-human-embryonic-stem-cell-injection-in-nod-scid-mice
#12
Yuval Ramot, Yael S Schiffenbauer, Netanel Amouyal, Nathan Ezov, Michal Steiner, Michal Izrael, Neta Lavon, Arik Hasson, Michel Revel, Abraham Nyska
Stem cells are emerging as a promising new treatment modality for a variety of central nervous system disorders. However, their use is hampered by the potential for the development of teratomas and other tumors. Therefore, there is a crucial need for the development of methods for detecting teratomas in preclinical safety studies. The aim of the current study is to assess the ability of a compact Magnetic Resonance Imaging (MRI) system to detect teratoma formation in mice. Five NOD-SCID mice were injected intrathecally with human embryonic stem cells (hESCs), with two mice serving as controls...
January 6, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28068847/case-study-survey-of-patient-satisfaction-with-prosthesis-quality-and-design-among-below-knee-prosthetic-leg-socket-users
#13
Nurhanisah Mohd Hawari, Mohammad Jawaid, Paridah Md Tahir, Raja Ahmad Azmeer
The aim of this case study was to explore patient satisfaction with the quality of prosthetic leg sockets intended for persons with lower limb amputations. A qualitative study based on in-depth interviews, preceded by a questionnaire session, was carried out with patients from the Rehabilitation Center and Hospital in Malaysia. Twelve out-patient and in-patient amputees with lower limb amputations, specifically below-knee amputations, were chosen randomly. The analysis of patients' narratives aimed to identify the functional and esthetic characteristics of currently used prosthetic leg sockets and any problems related to them...
January 10, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28066521/interventions-to-manage-residual-limb-ulceration-due-to-prosthetic-use-in-individuals-with-lower-extremity-amputation-a-systematic-review-of-the-literature
#14
M Jason Highsmith, Jason T Kahle, Tyler D Klenow, Casey R Andrews, Katherine L Lewis, Rachel C Bradley, Jessica M Ward, John J Orriola, James T Highsmith
Patients with lower extremity amputation (LEA) experience 65% more dermatologic issues than non-amputees, and skin problems are experienced by ≈75% of LEA patients who use prostheses. Continuously referring LEA patients to a dermatologist for every stump related skin condition may be impractical. Thus, physical rehabilitation professionals should be prepared to recognize and manage common non-emergent skin conditions in this population. The purpose of this study was to determine the quantity, quality, and strength of available evidence supporting treatment methods for prosthesis-related residual limb (RL) ulcers...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28065994/injuries-in-elite-taekwondo-poomsae-athletes
#15
Mohsen Kazemi, Anas Ingar, Ali Jaffery
Poomsae is the only non-contact and no opponent form of Taekwondo. The purpose of this descriptive study was to determine the type and rate of injuries in elite Canadian Poomsae athletes. Strain and joint dysfunction were the most common types of injuries in Poomsae. Lower limb and back were the most common area of injury in females and males respectively. Females with a lower rank in experience level (DAN≤ 3) were more likely to suffer from chronic overuse injuries compared to their male counterparts, who reported more acute injuries...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28065407/venous-drainage-of-the-face
#16
S Onishi, N Imanishi, Y Yoshimura, Y Inoue, Y Sakamoto, H Chang, T Okumoto
The venous anatomy of the face was examined in 12 fresh cadavers. Venograms and arteriovenograms were obtained after the injection of contrast medium. In 8 of the 12 cadavers, a large loop was formed by the facial vein, the supratrochlear vein, and the superficial temporal vein, which became the main trunk vein of the face. In 4 of the 12 cadavers, the superior lateral limb of the loop vein was less well developed. The loop vein generally did not accompany the arteries of the face. Cutaneous branches of the loop vein formed a polygonal venous network in the skin, while communicating branches ran toward deep veins...
December 14, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28065402/genetics-of-restless-legs-syndrome
#17
Juliane Winkelmann, Barbara Schormair, Lan Xiong, Patrick A Dion, David B Rye, Guy A Rouleau
At the outset of genetic studies in restless legs syndrome (RLS), the disorder was assumed to be a classical monogenic disorder that runs in families. However, years of family studies did not reveal any causally-related genes or genetic variants. The advent of high-throughput genotyping technology led to a change; genome-wide association studies in large case-control samples became feasible, which led to the identification of first genetic risk variants for RLS. Variants detected by this approach are common ones, which that individually confer only a minor increase in risk of disease...
November 12, 2016: Sleep Medicine
https://www.readbyqxmd.com/read/28065163/diagnostic-approach-to-catastrophic-musculoskeletal-injuries-in-racehorses
#18
Santiago S Diab, Susan M Stover, Francisco Carvallo, Akinyi C Nyaoke, Janet Moore, Ashley Hill, Rick Arthur, Francisco A Uzal
Catastrophic musculoskeletal injuries are the most common cause of euthanasia or spontaneous death in racehorses, and the most common cause of jockey falls with potential for serious human injury. Horses are predisposed to the vast majority of these injuries by preexisting lesions that can be prevented by early diagnosis and adequate bone injury management. A thorough examination of the musculoskeletal system in racehorses often determines the cause of these injuries and generates data to develop injury prevention strategies...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28063975/surveying-opinions-of-149-registrants-to-the-research-registry-awareness-of-and-attitudes-towards-research-registration
#19
Riaz A Agha, Daniyal J Jafree, Martinique Vella-Baldacchino, Chris Limb, Ter-Er Kusu-Orkar, Mirabel C Millip, Alexander J Fowler
BACKGROUND: Research registration is an important ethical principle in the Declaration of Helsinki, however, progress to increase registration has been slow. Understanding the attitudes of users towards registries may provide insights into increase research registration. In this survey-based study, we sought to gain insight from users of a single global research registry, the Research Registry® (www.researchregistry.com). METHODS: A Google Forms survey was created and emailed to all users of the Research Registry® (n = 1432)...
January 4, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28063787/the-development-and-examination-of-a-new-walking-executive-function-test-for-people-over-50years-of-age
#20
Arturo Leyva, Anoop Balachandran, Jennifer C Britton, Moataz Eltoukhy, Christopher Kuenze, Nicholas D Myers, Joseph F Signorile
A reduction in executive function (EF) performance is a major factor associated with the loss of functional independence among older adults. Computer-based tests are commonly used to evaluate EF; however, these mouse or keyboard tests are upper limb dominant while most activities of daily living (ADL, e.g. crossing a street) are lower limb dominant. The purpose of this study was to examine the utility of a newly developed walking EF test called the Walking Response and Inhibition Test (WRIT). The WRIT was validated by comparing its results a number of established computer-based tests and to an ADL-related test known to require EF, the Timed "Up & Go" Test (TUG)...
January 4, 2017: Physiology & Behavior
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