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https://www.readbyqxmd.com/read/28814031/evaluation-of-walking-smoothness-using-wearable-robotic-system-curara%C3%A2-for-spinocerebellar-degeneration-patients
#1
Atsushi Tsukahara, Kunihiro Yoshida, Akira Matsushima, Kumiko Ajima, Chika Kuroda, Noriaki Mizukami, Minoru Hashimoto
This paper aimed to verify the effectiveness of the wearable robotic system "curara" for patients with spinocerebellar degeneration (SCD) by evaluating walking smoothness. The curara system supports the wearer's gait using a synchronization control method that uses a neural oscillator based on a central pattern generator network. The system reflects the motional intention by adjusting the synchronization gains. This modifies the degree of interactive coordinated motion between the curara and the wearer. As a feasibility study, we evaluated the waking smoothness of 10 patients with SCD using three gain condition settings...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813972/novel-ankle-orthosis-with-elastomer-embedded-flexible-joint
#2
Takehito Kikuchi, Kohei Ishiya, Isao Abe, Sosuke Tanida, Takashi Yasuda
In this study, we propose a new ankle orthosis with elastomer-embedded flexible joints (EEFJ), composed of C-shaped springs and 3D-printed circular elastomer. This orthosis was designed to reduce burden on the tibialis anterior muscle (TA) and to achieve clearance between the tip of the toe and the ground. Fabrication method, strength testing, and gait analysis were conducted. According to the results of strength testing, the combination of the C-spring with 0.3 mm and 0.5 mm thickness and the elastomer with 30% and 60% filling density performs a supporting torque of 0...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813844/soft-stop-knee-brace-for-rehabilitation-from-ligament-injuries-design-and-pilot-trial
#3
James R J Greenfield, Haram Francis Hwang, Claire Davies, Andrew J McDaid
Ligaments within the human knee are commonly torn or injured as a result of sports that involve sharp direction changes, pivoting and landing. For this reason, athletes are often side-lined from their respective sports for up to 18 months after injury to rehabilitate. As part of the rehabilitation process, knee braces are often prescribed in an attempt to decrease the recovery period of the injured individual by restraining and minimizing the motion at the knee. However, the true efficacy of knee bracing is yet to be fully evaluated as studies show mixed results to whether braces actually decrease the rehabilitation period for patients...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813229/cortical-networks-for-correcting-errors-in-sensorimotor-synchronization-depend-on-the-direction-of-asynchrony
#4
K J Jantzen, Benjamin R Ratcliff, McNeel G Jantzen
Recent work provides clues that different cortical mechanisms may be employed when correcting for errors in sensorimotor synchronization that increase tap-tone asynchrony compared with those that decrease it. The authors tested this hypothesis by recording 64-channel electroencephalography while participants synchronized with an auditory metronome. We systematically introduced positive and negative phase-shift perturbations that were either liminal (10%) and subliminal (3%). We used a distributed source modeling approach to evaluate oscillatory activity and connectivity of discrete cortical sources...
August 16, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28810991/posterior-cruciate-ligament-injuries-associated-with-military-survival-swim-training
#5
Michael S Crowell, John S Mason, Matthew A Posner, Chad A Haley
OBJECTIVES: Posterior cruciate ligament (PCL) injuries are relatively common injuries associated with athletic activities and high-energy trauma. Posterolateral corner (PLC) injuries frequently accompany injury to the PCL. Diagnosis can be challenging and requires a comprehensive history and physical examination. Patients frequently report vague, nonspecific symptoms and the mechanism of injury is often useful in localizing injured structures. Two of the more common mechanisms for PCL injury include a direct blow to the proximal anterior tibia with the knee flexed, as well as a significant knee hyperextension injury...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28809627/-the-use-of-btb-allograft-in-revision-reconstruction-of-the-anterior-cruciate-ligament-and-its-success-rate-in-terms-of-subjective-patient-satisfaction
#6
J Sklenský, P Vališ, M Repko, M Rouchal, M Maršálek, D Hrůzová
PURPOSE OF THE STUDY A retrospective evaluation of the success rate of revision ACL reconstruction performed using BTB allograft in terms of the life expectancy of the procedure up to and over five years from surgery. MATERIAL AND METHODS Over a ten-year period, from 2003 to 2013, we performed 47 revision ACL reconstruction surgeries. The majority of the primary ACL reconstructions using BTB autografts were not performed at our site. The group observed included 16 women (34%) and 31 men (66%). The women were aged between 25 and 48 years, the median age being 32...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28806708/predictive-simulation-of-diabetic-gait-individual-contribution-of-ankle-stiffness-and-muscle-weakening
#7
Gilmar F Santos, Aline A Gomes, Isabel C N Sacco, Marko Ackermann
Diabetic neuropathic individuals present massive muscle strength reduction at the ankle plantar- and dorsiflexors and increased joint stiffness. Our aim is to investigate the adaptation strategies to these musculoskeletal alterations during walking by means of predictive simulations. We used a seven segment planar musculoskeletal model actuated by eight Hill-type muscles in each leg. The effect of all passive tissue in muscles and other joint structures was modeled by net passive joint moment curves. The predictive simulations were generated by solving an optimal control problem that minimized a cost function, including effort and tracking terms, using direct collocation and a commercial optimal control package...
August 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28800303/does-gender-make-a-difference-in-knee-rotation-proprioception-and-range-of-motion-in-healthy-subjects
#8
Qassim I Muaidi
BACKGROUND: Knee proprioception is an integral component of neuromuscular control system that stabilizes the joints, reducing incidence of injury. Knee injuries' incidences differ between genders. Knee rotation is a component of different knee injury mechanisms. Gender differences in knee proprioception in internal (IR) and external (ER) rotations are not sufficiently studied. OBJECTIVE: To check whether proprioceptive acuity in IR and ER directions of knee rotation is inherently lower in women compared to men...
August 1, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28799873/-birdlime-technique-using-tachosil-tissue-sealing-sheet-soaked-with-fibrin-glue-for-sutureless-vessel-transposition-in-microvascular-decompression-operative-technique-and-nuances
#9
Naoki Otani, Terushige Toyooka, Kazuya Fujii, Kosuke Kumagai, Satoru Takeuchi, Arata Tomiyama, Yasuaki Nakao, Takuji Yamamoto, Kojiro Wada, Kentaro Mori
OBJECTIVE Microvascular decompression (MVD) is effective for the treatment of trigeminal neuralgia (TN), hemifacial spasm (HFS), and glossopharyngeal neuralgia. The transposition technique is the standard procedure to avoid adhesions and granuloma around the decompression site but is more complex and difficult to perform than the interposition technique. The authors describe a simple and safe MVD transposition procedure they call the "birdlime" technique, which uses a tissue glue-coated collagen sponge soaked with fibrin glue, and the results of this technique...
August 11, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28799810/acute-effects-of-whole-body-vibration-on-balance-in-persons-with-and-without-chronic-ankle-instability
#10
Nicole K Rendos, Hyung-Pil Jun, Karen Lew Feirman, Kysha Harriell, Sae Yong Lee, Joseph F Signorile
Chronic ankle instability (CAI) is a common condition following ankle injury that is associated with compromised balance. Whole body vibration training (WBVT) programmes are linked with improved balance and function in athletic and non-athletic populations and may improve balance in CAI. Twelve healthy and seven CAI participants completed two randomly assigned interventions. Two Power Plate® platforms were attached back to back using a Theraband®. Participants stood on the active plate and inactive plate for WBVT and sham interventions, respectively...
August 11, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28799527/recent-advances-in-technique-and-clinical-outcomes-of-minimally-invasive-spine-surgery-in-adult-scoliosis
#11
REVIEW
Gang Liu, Sen Liu, Yu-Zhi Zuo, Qi-Yi Li, Zhi-Hong Wu, Nan Wu, Ke-Yi Yu, Gui-Xing Qiu
OBJECTIVE: Conventional open spinal surgery of adult scoliosis can be performed from anterior, posterior, or combined approach. Minimally invasive spine surgery (MISS) was developed for the purpose of reducing the undesirable effects and complications. This review aimed to make a brief summary of recent studies of the approach and clinical outcomes of MISS in adult scoliosis. DATA SOURCES: We conducted a systematic search from PubMed, Medline, EMBASE, and other literature databases to collect reports of surgical methods and clinical outcomes of MISS in treatment of adult scoliosis...
August 9, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28799049/-diagnostics-and-treatment-concepts-for-anteroinferior-shoulder-instability-current-trends
#12
F Martetschläger, M Tauber, P Habermeyer
Shoulder instability arises when static or dynamic stabilizers deviate from the natural equilibrium. The most common form of shoulder instability is in an anteroinferior direction, affects young athletes in contact sports and can lead to permanent impairment of shoulder function and early degeneration of the joint. Conservative as well as operative therapy options have been controversially discussed for years. This article describes the current state of diagnostics, current trends in therapy decisions and relevant therapy options for anterior shoulder instability...
August 10, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28798466/minimally-invasive-direct-restorations-a-practical-guide
#13
L Mackenzie, A Banerjee
The primary objectives of minimum intervention dentistry (MID) are to prevent or arrest active disease using non-operative management techniques. However, patients commonly present with cavitated caries lesions or failed restorations that are in need of operative intervention. Although much of clinical practice is devoted to preventing and managing the effects of caries and subsequent failure of the tooth-restoration complex, the clinical survival of restorations is often poor and becomes significantly worse as they increase in size and complexity...
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28795075/the-effect-of-menstrual-cycle-and-contraceptives-on-acl-injuries-and-laxity-a-systematic-review-and-meta-analysis
#14
REVIEW
Simone D Herzberg, Makalapua L Motu'apuaka, William Lambert, Rongwei Fu, Jacqueline Brady, Jeanne-Marie Guise
BACKGROUND: Women are at substantially greater risk for anterior cruciate ligament (ACL) injuries than are men. PURPOSE: To conduct a systematic review and meta-analysis of the literature to clarify the effect of the menstrual cycle and contraceptives on the laxity of and noncontact injuries to the ACL. STUDY DESIGN: Systematic review; Level of evidence, 4. METHODS: Searches were conducted using MEDLINE (1946-August 2016), the Cochrane Library Database, clinical trial registries, and related reference lists...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28794185/id-genes-are-essential-for-early-heart-formation
#15
Thomas J Cunningham, Michael S Yu, Wesley L McKeithan, Sean Spiering, Florent Carrette, Chun-Teng Huang, Paul J Bushway, Matthew Tierney, Sonia Albini, Mauro Giacca, Miguel Mano, Pier Lorenzo Puri, Alessandra Sacco, Pilar Ruiz-Lozano, Jean-Francois Riou, Muriel Umbhauer, Gregg Duester, Mark Mercola, Alexandre R Colas
Deciphering the fundamental mechanisms controlling cardiac specification is critical for our understanding of how heart formation is initiated during embryonic development and for applying stem cell biology to regenerative medicine and disease modeling. Using systematic and unbiased functional screening approaches, we discovered that the Id family of helix-loop-helix proteins is both necessary and sufficient to direct cardiac mesoderm formation in frog embryos and human embryonic stem cells. Mechanistically, Id proteins specify cardiac cell fate by repressing two inhibitors of cardiogenic mesoderm formation-Tcf3 and Foxa2-and activating inducers Evx1, Grrp1, and Mesp1...
August 9, 2017: Genes & Development
https://www.readbyqxmd.com/read/28793046/influence-of-the-tilt-angle-of-percutaneous-aortic-prosthesis-on-velocity-and-shear-stress-fields
#16
Bruno Alvares de Azevedo Gomes, Gabriel Cordeiro Camargo, Jorge Roberto Lopes Dos Santos, Luis Fernando Alzuguir Azevedo, Ângela Ourivio Nieckele, Aristarco Gonçalves Siqueira-Filho, Glaucia Maria Moraes de Oliveira
Background: Due to the nature of the percutaneous prosthesis deployment process, a variation in its final position is expected. Prosthetic valve placement will define the spatial location of its effective orifice in relation to the aortic annulus. The blood flow pattern in the ascending aorta is related to the aortic remodeling process, and depends on the spatial location of the effective orifice. The hemodynamic effect of small variations in the angle of inclination of the effective orifice has not been studied in detail...
August 7, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28791480/a-more-realistic-disc-herniation-model-incorporating-compression-flexion-and-facet-constrained-shear-a-mechanical-and-microstructural-analysis-part-ii-high-rate-or-surprise-loading
#17
Zhi Shan, Kelly R Wade, Meredith L Schollum, Peter A Robertson, Ashvin Thambyah, Neil D Broom
PURPOSE: Part I of this study explored mechanisms of disc failure in a complex posture incorporating physiological amounts of flexion and shear at a loading rate considerably lower than likely to occur in a typical in vivo manual handling situation. Given the strain-rate-dependent mechanical properties of the heavily hydrated disc, loading rate will likely influence the mechanisms of disc failure. Part II investigates the mechanisms of failure in healthy discs subjected to surprise-rate compression while held in the same complex posture...
August 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28791464/a-computed-tomographic-anatomical-study-of-the-upper-sacrum-application-for-a-user-guide-of-pelvic-fixation-with-iliosacral-screws-in-adult-spinal-deformity
#18
Arnaud Dubory, Houssam Bouloussa, Guillaume Riouallon, Stéphane Wolff
PURPOSE: Widely used in traumatic pelvic ring fractures, the iliosacral (IS) screw technique for spino-pelvic fixation remains anecdotal in adult spinal deformity. The objective of this study was to assess anatomical variability of the adult upper sacrum and to provide a user guide of spino-pelvic fixation with IS screws in adult spinal deformity. METHODS: Anatomical variability of the upper sacrum according to age, gender, height and weight was sought on 30 consecutive pelvic CT-scans...
August 8, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28790465/surgical-approaches-for-total-hip-arthroplasty
#19
Vincent M Moretti, Zachary D Post
Total hip arthroplasty (THA) has become one of the most reliable and patient-requested surgical interventions in all medicine. The procedure can be performed using a variety of surgical approaches, but the posterior approach, direct lateral approach, and direct anterior approach are by far the most common across the globe. This article highlights the history and technique for each of these common approaches. A review of outcomes and complications for each approach are also provided. Each approach has its own unique advantages and disadvantages, but all can be safely and successful utilized for THA...
July 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28790006/the-relationship-between-the-direction-of-putaminal-intracerebral-hemorrhage-and-anterior-cerebral-artery-predominance
#20
Jae-Ho Lee, Chul-Hoon Chang, Young-Jin Jung, Jong-Hoon Kim
INTRODUCTION: It is expected that anatomical variations in the circle of Willis have a direct effect on blood flow in the internal carotid artery. Rupture of the lenticulostriate artery of the middle cerebral artery 1st segment (M1) is the most common cause of putaminal intracerebral hemorrhage(ICH), and we hypothesized that this could be related to the anatomical variations of the circle of Willis and the predominance of the anterior cerebral artery 1st segment (A1). METHODS: We retrospectively reviewed the records of 544 patients who were treated for spontaneous ICH between 2013 and 2016 at Yeungnam University Hospital...
August 5, 2017: World Neurosurgery
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